This attachment/detachment tool for optical connectors is provided with a holding portion that holds an optical connector, an operation portion that causes the holding portion to operate so as to hold the optical connector, and a guide portion that is positioned between the holding portion and the operation portion and is guided by the optical fiber.
The purpose of the present invention is to provide an optical connector with which it is possible to suppress reflection at a connecting part. This optical connector 1 comprises a multi-core fiber 10 having a plurality of cores 11, and a ferrule 20 that includes a through-hole 23 into which one end side of the multi-core fiber 10 is inserted, wherein: an end face 25 of the ferrule 20 overlaps with a spherical plane SS that contacts, on a center axis 23C of the through-hole 23, an inclined plane FS which inclines with respect to a perpendicular plane FP perpendicular to the center axis; an end face 15 on one side of the multi-core fiber 10 inclines to the same side as the side on which the inclined plane FS inclines with respect to the perpendicular plane FP; and when the radius of curvature of the spherical plane SS is defined as B (mm), an eccentricity amount that is the distance to a top position TP protruding most from a line CL going through the center axis 23C and connecting the center line 23C, the spherical plane SS, and edges ED of the end face 25 in a cross-section perpendicular to the inclined plane FS is defined as C (μm), and the distance between the center axis 23C and the center of the core 11 positioned most separated from the center axis 23C when viewed along the center axis 23C is defined as x (μm), the following expression is satisfied.
An optical fiber coating layer forming mold has an upper mold having a first facing surface and a lower mold having a second facing surface. A first groove is formed in the first facing surface. A second groove is formed in the second facing surface. The first groove and the second groove are connected with each other to constitute a main molding space where the liquid resin that is a material of the coating layer is filled. A width direction is orthogonal to a longitudinal direction of the main molding space and a facing direction of the first facing surface and the second facing surface. An expansion recessed portion is formed in at least one of the first facing surface and the second facing surface. The expansion recessed portion constitutes an expansion space expanding in the width direction from the main molding space.
An optical unit (1) comprises: an optical fiber (10) including a bare fiber (11) and a cover (12) that protects the bare fiber; and a holding part (20) that holds the optical fiber. The optical fiber has an extended part (10a) extending from the holding part, a leading end (10b) of the extended part has an exposed area (A1) where the bare fiber is exposed, and the holding part holds the cover of the optical fiber.
A digital phase shifter according to the present invention is provided with: a first column; a second column extending parallel to the first column; and a connection section that electrically connects one end of the first column and one end of the second column. Each of the first column and the second column is formed by cascade-connecting a plurality of digital phase-shift circuits provided with outer lines, etc. Regarding the digital phase-shift circuits adjacent to each other in each of the first column and the second column, the outer lines adjacent to each other are separated, a first ground conductor and a second ground conductor adjacent to each other are separated, and the outer lines have opposite positional relationships with signal lines. The plurality of outer lines possessed by the first column and the plurality of outer lines possessed by the second column are not adjacent to each other.
This digital phase shifter comprises: a plurality of digital phase shift circuit groups in which a plurality of digital phase shift circuits are connected in cascade; and one or more bend-type connection parts for connecting two digital phase shift circuit groups. The connection part comprises: a coil connected in series between a signal line of a first digital phase shift circuit and a signal line of a second digital phase shift circuit in the two digital phase shift circuits; a pair of capacitors connected in parallel to both sides of the coil; and a pair of electronic switches which are provided to one-end sides of the pair of capacitors and switch whether to ground the one-end sides of the pair of capacitors.
This optical connector comprises: a plurality of optical fibers that respectively have bare fibers each having a large-diameter portion and a small-diameter portion having a smaller outer diameter than that of the large-diameter portion; a ferrule that has an insertion hole into which the plurality of bare fibers can be inserted, and an injection hole communicating with the insertion hole; an adhesive that secures the plurality of optical fibers to the ferrule in a state where the plurality of bare fibers are inserted into the insertion hole; and a low hygroscopic layer that is formed by a low hygroscopic material having lower hygroscopicity than that of the adhesive and seals the injection hole.
This amplifier with a differential FR switch function comprises: an input matching circuit; N (where N is an integer of two or greater) number of differential amplification circuits connected to the input matching circuit; and N number of output matching circuits connected one-to-one with the N number of differential amplification circuits. The N number of differential amplification circuits are connected in parallel. Only one of the N number of differential amplification circuits is driven.
This digital phase shifter comprises: a plurality of digital phase shift circuit groups in which a plurality of digital phase shift circuits are cascade connected; and one or more bend-type connection parts connecting two of the digital phase shift circuit groups together. The connection part comprises a first connection circuit including a first element connected in series between two digital phase shift circuits, i.e., between a signal line of a first digital phase shift circuit and a signal line of a second digital phase shift circuit, and a pair of second elements connected in parallel on both sides of the first element. The first element is a coil L and the second element is a capacitor.
This invention realizes an optical computation device having high class determination capability. An optical computation device (1), by referencing correct answer strength distributions (I"1, I"2, ..., I"m), estimates a class to which information belongs, the information being represented by an input strength distribution (I) of signal light (L0) input to an optical computation unit (11), from a detected strength distribution (I') of signal light (Ln) detected by an optical detection unit (12). A learning method (M) is configured such that, of the correct answer strength distributions (I"1, I"2, ..., I"m), the correct answer strength distribution with the highest degree of similarity to the detected strength distribution I' becomes the correct answer strength distribution corresponding to a class c to which the information represented by the input strength distribution I belongs.
G06N 3/067 - Réalisation physique, c. à d. mise en œuvre matérielle de réseaux neuronaux, de neurones ou de parties de neurone utilisant des moyens optiques
G02F 1/09 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des éléments magnéto-optiques, p.ex. produisant un effet Faraday
G02F 1/13 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des cristaux liquides, p.ex. cellules d'affichage individuelles à cristaux liquides
This optical connector comprises: a ferrule having an insertion through-hole (11); a plurality of optical fibers inserted into the insertion through-hole; an expansion member (50) inserted into the insertion through-hole together with the plurality of optical fibers; and an adhesive (30) which fixes the plurality of optical fibers to the ferrule while the plurality of optical fibers and the expansion member are inserted through the insertion through-hole, wherein the adhesive is a thermosetting resin and the expansion member expands at a lower temperature than the curing temperature of the adhesive.
G02B 6/04 - OPTIQUE ÉLÉMENTS, SYSTÈMES OU APPAREILS OPTIQUES - Détails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p.ex. des moyens de couplage formés par des faisceaux de fibres
The present invention implements a multicore fiber which makes it possible to easily measure the position of a marker. In an end surface (σ1) of a multicore fiber (MF), a plurality of cores (a1 to an) are disposed line-symmetrically with respect to a virtual axis (L1) orthogonal to an inclination direction (v1) of the end surface (σ1). When the end surface (σ1) is virtually divided into two, a first region and a second region, by the virtual axis (L1), a core farthest from the virtual axis (L1) out of cores (a1, a4) provided in the first region is defined as a first core, and a core farthest from the virtual axis (L1) out of the cores (a2, a3) provided in the second region is defined as a second core, in the end surface (σ1), the center of a marker (c) is included in a region between a straight line passing through the first core or a mode field of the first core and parallel to the virtual axis (L1) and a straight line passing through the second core or a mode field of the second core and parallel to the virtual axis (L1).
The present invention implements multicore fibers the inclination directions of end surfaces of which are appropriately set in consideration of connection. In multicore fibers (MF), inclination directions (v1, v2) of a first end surface (σ1) and a second end surface (σ2) are set such that, when the first end surface (σ1) and the second end surface (σ2) are brought into surface contact with each other such that an angle formed by the extension direction of cores (a1 to an) in the first end surface (σ1) and the extension direction of cores (a1 to an) in the second end surface (σ2) is minimized, each of the cores (a1 to an) in the first end surface (σ1) at least partially overlap any of the cores (a1 to an) in the second end surface (σ2).
This semiconductor package comprises an IC chip, a mold resin, an insulation layer, a plurality of solder bumps, and a plurality of rewirings. The IC chip has a first surface. The mold resin surrounds the IC chip in the plan view, has a rectangular or square outer shape in the plan view, and has a second surface facing in the same direction as the first surface. The insulation layer is formed on the first surface and the second surface. The plurality of solder bumps are formed on the insulation layer. The plurality of rewirings are formed on the insulation layer and connect the IC chip to the plurality of solder bumps. The plurality of solder bumps include a plurality of high-frequency bumps connected to high-frequency terminals of the IC chip and through which the same type of high-frequency signal is passed to each other. The plurality of high-frequency bumps are disposed at equal distance from the center of the mold resin in the plan view.
H01L 23/12 - Supports, p.ex. substrats isolants non amovibles
H01L 21/60 - Fixation des fils de connexion ou d'autres pièces conductrices, devant servir à conduire le courant vers le ou hors du dispositif pendant son fonctionnement
Provided is a heat pipe comprising: a container in which hydraulic fluid is sealed; a water-permeable first wick that is in contact with the inner periphery of the container; and a water-permeable second wick that is in contact with the first wick and faces a steam channel provided inside the container. The first wick is formed in a wave shape in a cross-sectional view perpendicular to the longitudinal direction of the container, and no grooves are formed on the inner periphery of the container.
F28D 15/02 - Appareils échangeurs de chaleur dans lesquels l'agent intermédiaire de transfert de chaleur en tubes fermés passe dans ou à travers les parois des canalisations dans lesquels l'agent se condense et s'évapore, p.ex. tubes caloporteurs
F28D 15/04 - Appareils échangeurs de chaleur dans lesquels l'agent intermédiaire de transfert de chaleur en tubes fermés passe dans ou à travers les parois des canalisations dans lesquels l'agent se condense et s'évapore, p.ex. tubes caloporteurs avec des tubes ayant une structure capillaire
An optical computation device (1) is provided with an optical computation unit (11) that includes an optical modulation element (11ai), and an image sensor (12) that generates an electric signal representing an intensity distribution of signal light output from the optical computation unit (11). A phase modulation amount of each of cells constituting the optical modulation element (11ai) is set such that a direction in which the signal light (SLi) is emitted is different from a direction in which noise light (NSi) is emitted. In this way, an optical computation device is achieved in which the influence of noise light on an electric signal generated by an image sensor is reduced.
G06E 3/00 - Dispositifs non prévus dans le groupe , p.ex. pour traiter des données analogiques hybrides
17.
PREFORM FOR OPTICAL FIBERS, METHOD FOR MEASURING REFRACTIVE INDEX PROFILE OF PREFORM FOR OPTICAL FIBERS, AND METHOD FOR PRODUCING PREFORM FOR OPTICAL FIBERS
A preform (1P) for optical fibers according to the present invention has a refractive index profile that contains a fluctuation region in which a fluctuation (20), wherein the refractive index increases or decreases, is repeated; at least a part of the fluctuation region is contained in an outer region (OR) that is at a distance (L) of 7 mm or more from the center of the preform (1P) for optical fibers; and the width (20W) of the fluctuation 20 in the radial direction within the outer region (OR) is less than 2 µm.
A digital phase shifter (100) includes a bent-type connection part (for example, connection part (20-1)) that connects: a first digital phase shift circuit (for example, digital phase shift circuit (10-10)) that is located at the end of a first digital phase shift circuit group; and a second digital phase shift circuit (for example, digital phase shift circuit (10-11)) that is located at the end of a second digital phase shift circuit group. A capacitor (50) is connected in parallel to at least one of: a first connection line in a connection part (20); a position near the position of mutual connection of signal lines of two adjacent digital phase shift circuits (10) that form the first digital phase shift circuit group; and a position near the position of mutual connection of signal lines of two adjacent digital phase shift circuits (10) that form the second digital phase shift circuit group.
This digital phase shifter includes a bent-type connection part that includes a third digital phase shift circuit and that connects a first digital phase shift circuit that is located at the end of a first digital phase shift circuit group and a second digital phase shift circuit that is located at the end of a second digital phase shift circuit group. A capacitor is connected in parallel to at least one of: a first connection line of a first connection part; a first connection line of a second connection part; a position near the position of connection of two adjacent digital phase shift circuits that form the first digital phase shift circuit group; and a position near the position of connection of two adjacent digital phase shift circuits that form the second digital phase shift circuit group.
This optical connector boot protects an optical fiber extending from an end of an optical connector, and comprises a boot body having formed therein a center hole into which the optical fiber is inserted, and a cylindrical straight portion extending from the rear end of the boot body and communicating with the center hole. The boot body includes a slit that is opened in the outer circumferential surface of the boot body and extends toward the center hole. When L is the length of the straight portion, Z is the section modulus of the straight portion, and E is the modulus of longitudinal elasticity of the straight portion, then L[mm]/(Z[mm3] × E[MPa]) ≥ 1.25 [/mm2MPa].
[Problem] To improve the performance of drawing a wire rod without the need of preparing a structure such as an arm. [Solution] A packing unit according to the present disclosure comprises a wire rod and a packing body that accommodates the wire rod therein. The packing body can be transformed into a first configuration for packing the wire rod and a second configuration for drawing the wire rod. A drawing port through which the wire rod is to be drawn from the packing body in the second configuration is located at a position higher than the highest part of the packing body in the first configuration.
B65D 85/04 - Réceptacles, éléments d'emballage ou paquets spécialement adaptés à des objets ou à des matériaux particuliers pour des objets de forme annulaire pour bobines de fil métallique, cordes ou tuyaux souples
An optical connection assembly (1) comprises: a plurality of adapter modules (M) each having a plurality of holding parts (10) that each have an insertion hole (11) in each of which an optical connector (70) can be inserted, and that can each hold the inserted optical connector (70), the plurality of holding parts (10) being disposed side by side in a first direction (Z) crossing an insertion direction in which the optical connector (70) is inserted; and a shaft member (50) that extends in a second direction (X) crossing the first direction (Z) and the insertion direction and supports the plurality of adapter modules (M). The plurality of adapter modules (M) are movable relative to each other in the second direction (X) along the shaft member (50), and the distance by which the plurality of adapter modules (M) are movable relative to each other is larger than or equal to the size of the insertion hole (11) in the second direction (X).
A terminal according to the present invention comprises: a housing; an input port whereby an optical signal is introduced into the interior of the housing; a wavelength demultiplexer that receives input of the optical signal introduced from the input port and splits the optical signal into a predetermined wavelength band and other wavelength bands; a distribution port that distributes the optical signal in the predetermined wavelength band split by the wavelength demultiplexer to an external terminal; and an output port whereby the optical signal in other wavelength bands than the predetermined wavelength band split by the wavelength demultiplexer is removed to the exterior of the housing. The number of wavelength demultiplexers is equal to the number of a plurality of optical fibers, a plurality of the wavelength demultiplexers are provided, and each wavelength demultiplexer among the plurality of wavelength demultiplexers is connected with a respective optical fiber among the plurality of optical fibers.
H04J 14/02 - Systèmes multiplex à division de longueur d'onde
G02B 6/293 - Moyens de couplage optique ayant des bus de données, c. à d. plusieurs guides d'ondes interconnectés et assurant un système bidirectionnel par nature en mélangeant et divisant les signaux avec des moyens de sélection de la longueur d'onde
H04B 10/25 - Dispositions spécifiques à la transmission par fibres
24.
MULTICORE FIBER CONNECTOR, OPTICAL COMMUNICATION NETWORK USING MULTICORE FIBER CONNECTOR, AND METHOD FOR CONNECTING OPTICAL COMMUNICATION NETWORK
In an optical communication network (1A) including a plurality of nodes (N1-N5), each of a plurality of transmission lines, which connect the nodes together, is formed only of a multicore fiber connector (Cs) formed from a multicore fiber and FI/FO devices each of which is connected to each of both ends of the multicore fiber and which have reverse symmetric connection structures. With this configuration, construction or extension work is simplified in an optical communication network having the multicore fiber or the multifiber connector as a transmission line.
The present invention appropriately aligns a multi-core fiber. This control device (10) comprises a processor (10a). The processor (10a) executes: an identification process for identifying the core position of a multi-core fiber and a marker position; and an alignment process for aligning the multi-core fiber by controlling an alignment mechanism so that the core position and the marker position on an end surface of the multi-core fiber satisfy predetermined conditions.
The present invention facilitates the construction or extension of a communication network which has multi-core fibers or multi-core fiber connectors serving as a transmission path. In an optical communication network (1A) including a plurality of nodes (N1-N5), a plurality of transmission paths for connecting nodes are constituted by multi-core fibers or by only a multi-core fiber connector (Cs) in which the positions of a marker on both end surfaces are swapped, or only a multi-core fiber connector (Cc) in which the positions of the marker on both end surfaces are not swapped.
An optical connector cleaning tool 1 comprises: a cleaning shaft 105 that has a pressing surface 121 that is to press a cleaning body 2 onto a connection end surface 211 of an optical connector 200, the cleaning body 2 being wrapped over the pressing surface 121 so as to double back; a feed bobbin 30 that supplies the cleaning body 2 to the pressing surface 121 via a supply path SP; and a winding bobbin 40 that retrieves the cleaning body 2 from the pressing surface 121 via a retrieval path RP. The supply path SP and the retrieval path RP are arranged along upper and lower surfaces 170a, 170b of the cleaning shaft 105, and the optical connector cleaning tool 1 has an opening 172a that inverts the supply path SP and the retrieval path RP between the upper surface 170a side and the lower surface 170b side.
An optical connector (1) comprising: a ferrule (10) which has a connecting end face (10a) having fiber holes (11) through which optical fibers (F) are inserted opened therein; a holding member (20) which holds the ferrule (10); a spring push (30); and an impelling member (40) impels the ferrule (10) as a result of one end thereof abutting the holding member (20) and the other end thereof abutting the spring push (30), wherein the holding member (20) has an engaging part (23) and the spring push (30) has an engageable part (35) which engages with the engaging part (23).
[Problem] To reduce crossing over of a flange of a bobbin by a cleaning element that is wound on the bobbin. [Solution] A cleaning tool according to the present disclosure comprises a cleaning element, a head member that presses the cleaning element against an object to be cleaned, a supply bobbin on which the cleaning element is wound and that supplies the cleaning element to the head member, and a winding bobbin that winds the cleaning element from the supply bobbin via the head member. The winding bobbin comprises a body section on which the cleaning element is wound, and a pair of flanges arranged on both ends of the body section. The body section has a tapered surface that is inclined between the pair of flanges.
B65H 54/12 - Bobinage et va-et-vient du matériau sur noyaux, bobines, tubes ou sur mandrins ou gabarits pour paquets analogues pour la confection de paquets de forme particulière ou autour de types particuliers de bobines, tubes, mandrins ou gabarits sur bobines à joues
B65H 75/00 - Stockage des bandes, rubans ou d'un matériau filiforme, p.ex. sur tourets
B65H 75/14 - Genres ou types de section transversale circulaire ou polygonale avec deux rebords d'extrémité
30.
CROSSTALK MEASURING METHOD, AND CROSSTALK MEASURING DEVICE
This crosstalk measuring method includes: a connecting step S1 for optically connecting an end 18 of a core 11 and an end 18 of a core 12 by way of a core of a first optical fiber 51; a first measuring step S2 for using an optical time domain reflectometer (OTDR) 20 to measure a power of emitted light emitted from one end 17 of the core 11, the emitted light including pulsed crosstalk light CL1 obtained through a combination of light generated when pulsed incident light L from the OTDR 20 is caused to enter from the one end 17 of the core 11 and crosstalk of the incident light L from the core 11 to the core 12 occurs, and light generated when crosstalk, from the core 12 to the core 11, of the incident light L that has entered the core 12 from the core 11 occurs; and a processing step S3 for using the measured power of the emitted light to obtain the magnitude of the crosstalk between the core 11 and the core 12.
This optical fiber wire comprises an axially extending bare wire portion having a core and a cladding, a primary layer covering the bare wire portion, and a secondary layer covering the primary layer. The Young's modulus of the primary layer is within the range of 0.10-0.25 MPa. The optical fiber wire is configured such that voids that occur in the primary layer are eliminated by heating the optical fiber wire at 60°C for three minutes or more.
This optical fiber wire comprises: a bare wire part that has a core and a cladding and that extends in an axial direction; a primary layer that covers the bare wire part; and a secondary layer that covers the primary layer. The Young's modulus of the primary layer is in the range of 0.10-0.45 MPa. The pull-out force that is required to pull the bare wire part out of the primary layer in the axial direction is in the range of 0.6-1.2 N/mm. When a point load is applied to the optical fiber wire using a spherical pin having a diameter of 3 mm, voids occur in the primary layer before delamination occurs between the bare wire part and the primary layer and before cracks occur in the primary layer.
In this array antenna device, a third feeding line includes an extending portion extending in a first direction along an antenna element row, a first branch line branching from the extending portion and overlapping a first slot in a plan view, and a second branch line overlapping a second slot in a plan view. The length of the first branch line to the first slot and the length of the second branch line to the second slot are equal. In a plan view, the direction in which the tip portion of the first branch line enters the first slot is opposite to the direction in which the extending portion extends in the first direction. In a plan view, the direction in which the tip portion of the second branch line enters the second slot is opposite to the direction in which the extending portion extends in the first direction.
H01Q 21/08 - Réseaux d'unités d'antennes, de même polarisation, excitées individuellement et espacées entre elles les unités étant espacées le long du trajet rectiligne ou adjacent à celui-ci
H01Q 13/08 - Terminaisons rayonnantes de lignes de transmission micro-ondes à deux conducteurs, p.ex. lignes coaxiales ou lignes micro-rayées
This digital phase shifter is configured by cascade-connecting a plurality of digital phase-shift circuits each provided at least with a signal line, a pair of inner lines installed on both sides of the signal line, a pair of outer lines respectively installed outside the pair of inner lines, a first ground conductor connected to one ends of the pair of inner lines and the pair of outer lines, a second ground conductor connected to the other ends of the pair of outer lines, and a pair of electronic switches respectively provided between the other ends of the pair of inner lines and the second ground conductor. In the digital phase-shift circuits adjacent to each other, the adjacent pairs of the outer lines are separated from each other, and the adjacent first and second ground conductors are separated from each other.
The present invention comprises a basic phase shifting circuit and an output circuit that reduces the output load of the basic phase shifting circuit relative to the input load thereof with respect to a high frequency signal inputted from a signal line. The basic phase shifting circuit comprises at least: the signal line; a pair of inner lines that are provided on both sides of the signal line; a pair of outer lines each of which is provided on the outer side of the respective one of the inner lines; first grounding conductors that are connected to respective ones of the terminals of the pair of inner lines and of the pair of outer lines; second grounding conductors that are connected to the respective other ones of the terminals of the pair of outer lines; and a pair of electronic switches each of which is provided between each of the other terminals of the pair of inner lines and the respective one of the second grounding conductors.
In the present invention, an antenna substrate comprises: an antenna; a ground member gapped from the antenna in the thickness direction; and a feeder layer positioned between the antenna and the ground member in the thickness direction. An intermediate ground member that is electrically connected to the ground member and a feeder line are disposed in the feeder layer. An excitation slit extending in the direction orthogonal to the thickness direction and a line slit extending in the direction orthogonal to both the direction in which the excitation slit extends and the thickness direction are formed in the intermediate ground member. The feeder line is positioned inside the line slit, and the excitation slit extends so as to intersect with the feeder line when viewed from the thickness direction.
A digital phase-shift circuit according to the present invention is provided with: a signal line extending in a prescribed direction; a first inner line disposed on one side of the signal line in a separated manner; a second inner line disposed on the other side of the signal line in a separated manner; an outer line provided at a position on said one side or said other side, said position being farther from the signal line than the first inner line or the second inner line is; a first ground conductor connected to one end of each of the first inner line, the second inner line, and the outer line; a second ground conductor connected to the other end of the outer line; a first electronic switch provided between the other end of the first inner line and the second ground conductor; and a second electronic switch provided between the other end of the second inner line and the second ground conductor.
An optical fiber cable (1) comprises: a core (10) that includes optical fibers (11); a first protective layer (20) that covers the core (10); and a second protective layer (50) that covers the first protective layer (20). At least one integrated region (20a) that is in pressure-contact with or fixed to the second protective layer (50) and at least one non-integrated region (20b) that is not in pressure-contact with or fixed to the second protective layer (50) are provided to the outer circumferential surface (20s) of the first protective layer (20).
A digital phase shifter according to the present invention comprises a plurality of digital phase shifting circuits connected in cascade, each digital phase shifting circuit comprising: a signal line; a pair of inner lines provided on both sides of the signal line; a pair of outer lines provided outside the inner lines; a first ground conductor connected to one end of each of the inner lines and the outer lines; a second ground conductor connected to the other end of each of the outer lines; and a pair of electronic switches provided between the other ends of the inner lines and the second ground conductor. The plurality of digital phase shifting circuits each have a multi-row structure composed of a front row and a back row. The front row and the back row are adjacent to each other. A ground pattern is connected to the front row at one point.
This optical connection unit connected to an optical integrated circuit comprises: a plurality of kinds of optical fibers having different mode field diameters; a ferrule that holds the plurality of kinds of optical fibers; a ferrule side micro-lens array which allows transmission of an optical signal travelling from leading end surfaces of the optical fibers held in the ferrule toward the optical integrated circuit; and a plurality of optical adjustment units which correspond to the plurality of kinds of optical fibers and which are arranged in the ferrule side micro-lens array. The form of the optical adjustment units varies in accordance with the mode field diameters such that the optical signal transmitted through the optical adjustment units will be parallel light.
An optical fiber cable (1A) comprises: a core (10) that has optical fibers (11); a restricting member (20) that is longitudinally attached to the core (10) and covers the core (10); a sheath (40) that covers the restricting member (20); and a ripcord (60) that is positioned between the sheath (40) and the core (10), wherein the ripcord (60) is positioned between a first part (21) and a second part (22) of the restricting member (20).
This semiconductor package comprises: an RFIC chip; a mold resin which surrounds the RFIC chip in a plan view; a plurality of solder bumps; and a plurality of rewirings which connect the RFIC chip to the plurality of solder bumps, wherein the plurality of solder bumps include, in a plan view, a first bump group which is disposed at a position overlapping the RFIC chip and a second bump group disposed at a position overlapping the mold resin. The second bump group includes at least a high frequency bump which is connected to a high frequency terminal of the RFIC chip and a GND bump which is connected to a GND terminal of the RFIC chip. A minimum pitch in the second bump group is larger than a minimum pitch in the first bump group.
This invention achieves test technology with which an erroneous determination is unlikely to occur. A test device (1) comprises at least one processor (12). The test device is characterized in that the processor (12) executes: a first determination process (S11) for using a model (M1) generated by machine learning to determine the class of a test target from a first image (I1) obtained by imaging the test target; and a second determination process (S12) for, if the result of the first determination process (S11) is not a predetermined specific class, determining the class of the test target included as the subject in the first image (I1) by referencing, in addition to the first image (I1), a second image (I2) representing a normal test target.
A purpose of the present invention is to provide an optical connection structure and a ferrule capable of stabilizing optical connection quality when performing positioning without using pins. A ferrule (50) according to the present invention comprises: a fiber pore (51) into which an optical fiber (F) is to be inserted; a light emission face from which light having passed through the optical fiber (F) is to be emitted; and a longitudinal reference face (50a) which positions the ferrule (50) in the longitudinal direction with respect to a receptacle (30). The longitudinal reference face (50a) is located between the center line (O) passing through the center position of the ferrule (50) in the longitudinal direction and the light emission face.
This optical cable comprises: an optical fibre; a sheath which protects the optical fibre; and a rip cord which is located at a part of the circumference of the sheath and at least a part of which is embedded in the sheath in a manner so as to be exposed from the inner surface of the sheath. The optical cable is configured such that the rip cord is dislodged to the inner side of the sheath when a side pressure load that is greater than the withstand load of the optical cable during use is applied from the inner surface of the sheath in the exposure direction in which the rip cord is exposed from the sheath, as seen from the centre of the rip cord, in a cross-section orthogonal to the longitudinal direction of the sheath 3.
This optical fiber preform (1P) is provided with: a clad rod (20R) which has, provided therein, a hole (25) extending along the length direction and open at both ends thereof, and which includes a clad glass body (20P) that forms at least a part of cladding (20) in an optical fiber (1); and a core rod (10R) which includes a core glass body (10P) that forms a core (10) in the optical fiber (1) and which is held in the hole (25). The diameter of the hole (25) gradually increases from one end side toward the other end side.
Provided is a digital phase shifter comprising a plurality of digital phase-shift circuits that are concatenated, each comprising at least a signal line, a pair of inner lines provided on both sides of the signal line, a pair of outer lines each provided on the outside of the inner lines, a first ground conductor connected to one end of each of the inner lines and the outer lines, a second ground conductor connected to the other end of each of the outer lines, and a pair of electronic switches each provided between the other end of each of the inner lines and the second ground conductor. The digital phase-shift circuits are each set in a low-delay mode in which a return current flows through the inner lines, or a high-delay mode in which a return current flows through the outer lines. Among the plurality of the digital phase-shift circuits, a non-uniform digital phase-shift circuit of which the amount of phase shift is non-uniform with respect to the other digital phase-shift circuit(s) is provided with a phase-shift amount mitigating unit that mitigates the non-uniformity in the amount of phase shift.
A multi-fiber optical connector (1) comprises: a ferrule (10) that has a connection end (10a) provided with a connection end surface (11), a base end (10b) located on the side opposite to the connection end (10a), and a plurality of fiber holes (12) through which a plurality of optical fibers (20) can be inserted toward the connection end surface (11); a first member (30) that is disposed so as to face the base end (10b) of the ferrule (10) in a longitudinal direction (Z) in which the fiber holes (12) extend; a biasing member (40) that is disposed between the first member (30) and the ferrule (10) in the longitudinal direction (Z), and biases the ferrule (10) toward the connection end (10a); and a spring push (50) that pushes the first member (30) toward the connection end (10a) by rotational movement.
G02F 1/09 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des éléments magnéto-optiques, p.ex. produisant un effet Faraday
H01L 29/82 - Types de dispositifs semi-conducteurs commandés par la variation du champ magnétique appliqué au dispositif
H10N 50/80 - Dispositifs galvanomagnétiques - Détails de structure
This digital phase shifter comprises: a digital phase-shift circuit which comprises at least a signal line, a pair of inner lines that are disposed on both sides of the signal line and are spaced apart from each other by a predetermined distance, a pair of outer lines each provided on the outside of the inner lines, a first ground conductor connected to one end of each of the inner lines and the outer lines, a second ground conductor connected to the other end of each of the outer lines, and a pair of electronic switches each provided between the other end of each of the inner lines and the second ground conductor, the first ground conductor being composed of a multilayer conductive layer; and an output circuit that comprises an output signal line connected to the signal line and is configured to increase the output impedance over an input matching load connected to the input stage of the digital phase-shift circuit.
This cable accommodating body 1A comprises: a cable bundle 10 which is formed by winding a cable 11 and does not have a winding core; and a container 20 which accommodates the cable bundle 10, wherein the container 20 has first and second extraction ports 22, 23 through which the cable 11 is extracted from the inside of the container 20.
B65H 49/02 - Procédés ou appareils dans lesquels les paquets ne tournent pas
B65H 75/36 - Noyaux, gabarits, supports ou pièces de tenue pour matériau bobiné, enroulé ou plié, p.ex. tourets, broches, bobines, tubes à cannette, boîtes spécialement adaptés ou montés pour stocker, dérouler de façon répétée et stocker à nouveau des longueurs de matériau prévues pour des buts particuliers, p.ex. tuyaux souples à poste fixe, câbles de force n'impliquant pas l'utilisation d'un noyau ou d'un gabarit à l'intérieur du paquet de matériau stocké, p.ex. dans lequel le matériau stocké est logé dans une enveloppe ou un logement, ou engagé de manière intermittente sur une série de supports d'une
A digital phase shifter according to the present invention comprises a plurality of digital phase shifting circuits connected in cascade, each digital phase shifting circuit comprising: a signal line; a pair of inner lines provided on both sides of the signal line; a pair of outer lines provided outside the inner lines; a first ground conductor connected to one end of each inner line and outer line; a second ground conductor connected to the other end of each outer line; and a pair of electronic switches provided between the other ends of the inner lines and the second ground conductor. The plurality of digital phase shifting circuits have a multi-row structure comprising a front row and a rear row, and an inter-row connecting structure in which the outer lines in the front row and the outer lines in the rear row are connected, and the number of digital phase shifting circuits from an input end of the most upstream digital phase shifting circuit in the front row to an input end of the most upstream digital phase shifting circuit in the rear row is set such that a phase of an input signal to the most upstream digital phase shifting circuit in the front row and a phase of an input signal to the most upstream digital phase shifting circuit in the rear row are opposite phases.
A digital phase shifter comprising: a plurality of cascade-connected digital phase shifter circuits; and one or more bend-shaped connection parts each connecting between two digital phase shifter circuits, wherein the digital phase shifter circuits each at least include a signal line path, a pair of inner line paths provided on both sides of the signal line path, a pair of outer line paths provided outward of the inner line paths, a first ground conductor connected to one end of each of the inner line paths and the outer line paths, a second ground conductor connected to the other end of each of the outer line paths, and a pair of electronic switches each provided between the other end of each of the inner line paths and the second ground conductor, the digital phase shifter circuits are each set to a low delay mode in which a return current flows through the inner line paths or a high delay mode in which a return current flows through the outer line paths, and the plurality of cascade-connected digital phase shifter circuits are disposed in a spiral formation with the connection parts therebetween.
METHOD FOR ADJUSTING OUTPUT OF WIRELESS COMMUNICATION MODULE, METHOD FOR MANUFACTURING WIRELESS COMMUNICATION MODULE, AND APPARATUS FOR ADJUSTING OUTPUT OF WIRELESS COMMUNICATION MODULE
This method for adjusting the output of a wireless communication module comprises a temperature adjusting step, a transmitting step, a feedback control step, a measuring step, and an output adjusting step. The temperature adjusting step makes the temperature of the wireless communication module a predetermined set temperature by means of a temperature adjusting mechanism. The transmitting step sends a transmission signal of a predetermined frequency to the wireless communication module, to thereby cause a wireless signal to be transmitted from a first antenna. The feedback control step controls the output of the transmission signal on the basis of the result of comparison between a power value obtained by detecting the transmission signal and a predetermined power threshold value. The measuring step receives the wireless signal by means of a second antenna, and measures the effective radiated power of the wireless signal. The output adjusting step adjusts the output of the transmission signal on the basis of the effective radiated power measured in the measuring step.
H04B 1/38 - TRANSMISSION - Détails des systèmes de transmission non caractérisés par le milieu utilisé pour la transmission Émetteurs-récepteurs, c. à d. dispositifs dans lesquels l'émetteur et le récepteur forment un ensemble structural et dans lesquels au moins une partie est utilisée pour des fonctions d'émission et de réception
The present invention achieves an optical switch that has a function for switching an optical path of signal light in response to a control signal. An optical switch (1A, 1B) comprises: an optical modulation element (14A, 14B) that reflects or refracts signal light (Li) reflected on a mirror (12) and a half-mirror (13); and a control unit (16A, 16B) that demodulates a control signal (Ci) from the intensity of the signal light (Li) transmitted through the half-mirror (13) and simultaneously detected by an optical detector (15), and sets a phase modulation amount of each cell included in the optical modulation element (14A, 14B) so that the signal light (Li) is emitted in a direction corresponding to the control signal (Ci).
G02F 1/29 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de la position ou de la direction des rayons lumineux, c. à d. déflexion
G02F 1/01 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur
G02F 1/09 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des éléments magnéto-optiques, p.ex. produisant un effet Faraday
The purpose of the present invention is to provide an optical fiber alignment method, an optical fiber connector manufacturing method, an optical fiber alignment device, and an optical fiber fusion splicing machine with which it is possible to suitably perform alignment in the circumferential direction. This alignment device (200) comprises: imaging units (105A), (105B) that perform one round's worth of capturing side images in the circumferential direction of a pair of optical fibers (10A), (10B) at a plurality of focus positions; a feature value calculation unit (112) that, for each focus position, performs one round's worth of calculating feature values obtained by digitizing features of the side images for the respective optical fibers (10A), (10B); an asymmetry calculation unit (113) that, for each focus position, calculates the asymmetry of a cross-correlation between the one round's worth of feature values of the respective optical fibers (10A), (10B); a focus position selection unit (114) that selects specific focus positions among focus positions having a prescribed asymmetry or higher; and a rotation alignment unit that performs alignment in the circumferential direction of the pair of optical fibers (10A) (10B) on the basis of the one round's worth of side images of the respective optical fibers (10A), (10B) at the selected focus positions.
The present invention realizes an optical arithmetic device capable of performing more various optical arithmetic operations than conventional optical arithmetic devices. An optical arithmetic device (1) comprises: an image sensor (12ai) that includes a plurality of light receiving cells; an optical modulation element (11ai) that includes a plurality of cells in which phase modulation amounts can be set independently of each other; an optical branch element (13ai) that causes signal light to branch into monitor signal light which enters the image sensor (12ai) and arithmetic signal light which enters the optical modulation element (11ai); and a control unit (14) that sets the phase modulation amount of the cells in the optical modulation element (11ai) in accordance with the intensity of the monitor signal light detected at the light receiving cells in the image sensor (12ai) corresponding to said cells.
G06G 7/60 - Calculateurs analogiques pour des procédés, des systèmes ou des dispositifs spécifiques, p.ex. simulateurs d'êtres vivants, p.ex. leur système nerveux
58.
OPTICAL FIBER, OPTICAL DEVICE, AND METHOD FOR MANUFACTURING OPTICAL DEVICE
Realized is an optical fiber which has a helical core and in which a change in core position at an end surface thereof, possibly occurring due to end surface polishing, is suppressed. An optical fiber (1) includes a helical section (I0) in which a non-center core (12) is helical, and a first non-helical section (I1) which includes a first end of the optical fiber (1) and in which the non-center core (12) is linear.
In order to provide a spatial light phase modulator that can be miniaturized and that is operable at high speed, each microcell (C) of this spatial light phase modulator (13) is composed of a magnetization free layer (C11) and a control unit (electrode C12) that controls the magnetization direction (arrow M11) of the magnetization free layer (C11). The magnetization free layer (C11) and the control unit (electrode C12) are configured to control the magnetization direction (arrow M11) so as to be parallel or substantially parallel the direction (arrows kf, kr) of a normal to the first optical effective surface and the second optical effective surface (bottom surfaces C111, C112).
G02F 1/09 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des éléments magnéto-optiques, p.ex. produisant un effet Faraday
A splitter-combiner of the invention includes a first quarter-wave line, a second quarter-wave line, an absorption resistance, a combining terminal, and a line bending circuit. The line bending circuit includes a line parallel region and a line bending region. The line parallel region has the first quarter-wave line and the second quarter-wave line. The first quarter-wave line and the second quarter-wave line are parallel to each other in the line parallel region. The line bending region has the first quarter-wave line and the second quarter-wave line. The first quarter-wave line and the second quarter-wave line are bent in the same direction as each other in the line bending region.
In the present invention, a connection unit comprises: a first connection line that connects a signal line of a first digital phase-shift circuit and a signal line of a second digital phase-shift circuit; a second connection line that connects an inner line of the first digital phase-shift circuit and an inner line of the second digital phase-shift circuit; a ground layer disposed over and under the first connection line and the second connection line; and a first via hole connecting at least the second connection line and the ground layer.
This fiber bundle connector 1 comprises a plurality of optical fibers 30 and a ferrule 20 that has a connecting end surface 20a and a fiber bore 21 that extends to the connecting end surface and has the plurality of optical fibers passed therethrough. At least at the connecting end surface, the plurality of optical fibers passed through the fiber bore are closely arranged such that adjacent optical fibers are in contact, and among the closely arranged optical fibers, all of the optical fibers positioned on the outermost periphery are pressed against the inner wall 22 of the fiber bore so as to induce the elasto-plastic deformation of the inner wall.
G02B 6/40 - Moyens de couplage mécaniques ayant des moyens d'assemblage de faisceaux de fibres
G02B 6/04 - OPTIQUE ÉLÉMENTS, SYSTÈMES OU APPAREILS OPTIQUES - Détails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p.ex. des moyens de couplage formés par des faisceaux de fibres
A polarization-maintaining fiber (1) comprises a core (11), a pair of stress-applying parts (12a, 12b) that are positioned on both sides of the core (11), and cladding (13) that encloses the core (11) and the pair of stress-applying parts (12a, 12b). The polarization-maintaining fiber (1) exhibits a bending loss of at most 7 dB at a wavelength of 1.55 µm when bent to a bending radius of 5 mm and twisted on the order of one revolution per 31.4 mm of fiber length. It is thus possible to obtain a polarization-maintaining fiber in which bending loss can be suppressed to a level that can stand up to normal use, even if subjected to the degree of twisting that can occur during normal use.
Provided is an optical transmission path capable of compensating for changes in a two-dimensional intensity distribution for signal light produced in the optical transmission path. The optical transmission path (1) comprises an optical waveguide (11) and a light modulator (121). A phase modulation amount for each cell of the light modulator (121) is set so as to compensate for changes in the two-dimensional intensity distribution produced in the optical waveguide (11).
G02F 1/09 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des éléments magnéto-optiques, p.ex. produisant un effet Faraday
Provided is an optical switch having a function for switching the optical path of a signal light in response to a control signal. An optical switch (1A, 1B) comprises a light modulator (12A, 12B) that reflects or refracts signal light (L), the light modulator (12A, 12B) including a plurality of cells in which phase modulation amounts can be set independently from each other. The phase modulation amount of each cell included in the light modulator (12A, 12B) is set so that the signal light (L) is emitted in a direction corresponding to the ratio of a control signal cycle to a carrier light cycle.
G02F 1/29 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de la position ou de la direction des rayons lumineux, c. à d. déflexion
G02F 1/01 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur
G02F 1/09 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des éléments magnéto-optiques, p.ex. produisant un effet Faraday
A polarization-maintaining fiber (1) comprises a core (11), a pair of stress-applying parts (12a, 12b) that are positioned on both sides of the core (11), and cladding (13) that encloses the core (11) and the pair of stress-applying parts (12a, 12b). The polarization-maintaining fiber (1) exhibits a cutoff wavelength of not less than 1.20 µm but less than 1.31 µm at a fiber length of 2 m and a bending radius of 140 mm, and exhibits a bending loss of at most 6.6 dB at a wavelength of 1.31 µm when bent to a bending radius of 5 mm and twisted on the order of one revolution per 31.4 mm of fiber length. It is thus possible to obtain a polarization-maintaining fiber in which bending loss can be suppressed to a level that can stand up to normal use, even if subjected to the degree of twisting that can occur during normal use.
In order to generate an electric signal representing a different image from an electric signal representing the same image, an imaging device (1) comprises an optical computing unit (11) that generates a second optical signal (optical signal L2) from a first optical signal (optical signal L1), an image sensor (12) that converts the second optical signal (optical signal L2) into a first electric signal (electric signal E1), and an electrical computing unit (13) that generates a second electric signal (electric signal E2) by performing electrical computing on the first electric signal (electric signal E1). The second electric signal (electric signal E2), which is generated from the first electric signal (electric signal E1) including the same image information by using the plurality of models by the electrical computing unit (13), includes different image information.
The present invention achieves an optical computation device that makes it possible to perform high-speed optical computation while suppressing information loss from binarization. An optical computation device (1) comprises: a spatial light modulator (11) that generates signal light (L1) that represents a wavenumber space image (I1) by binary modulation of carrier light (L0) cell by cell; and a light modulation element group (13) that comprises one or more light modulation elements (13a1–13an) that act in sequence on the signal light (L1).
G06E 3/00 - Dispositifs non prévus dans le groupe , p.ex. pour traiter des données analogiques hybrides
G02B 26/08 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables pour commander la direction de la lumière
G02F 1/13 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des cristaux liquides, p.ex. cellules d'affichage individuelles à cristaux liquides
A pressure sensitive sensor unit (1A) comprises first pressure sensitive sensors (2A to 2D) having an output that changes in accordance with the magnitude of an applied load, a second pressure sensitive sensor (2E) having an output that changes in accordance with the magnitude of an applied load, a plate member (5) arranged so as to encompass the first and second pressure sensitive sensors as seen in a plan view, first load transmitting members (3A to 3D) interposed between the first pressure sensitive sensors and the plate member, and a second load transmitting member (4) interposed between the second pressure sensitive sensor and the plate member, wherein: the first load transmitting members transmit loads belonging to first load areas to the first pressure sensitive sensors; and the second load transmitting member transmits a load belonging to a second load area, larger than the first load areas, to the second pressure sensitive sensor.
G01L 1/20 - Mesure des forces ou des contraintes, en général en faisant usage des cellules électrocinétiques, c. à d. des cellules contenant un liquide, dans lesquelles un potentiel électrique est produit ou modifié par l'application d'une contrainte
70.
OPTICAL CONNECTOR AND PRODUCTION METHOD FOR OPTICAL CONNECTOR
The purpose of the present invention is to provide an optical connector and a production method for an optical connector, the optical connector being less susceptible to deformation due to biasing force generated by a biasing member even when a heat-shrinkable sleeve is used. An optical connector (1) according to the present invention comprises: a ferrule (10) having a connection end surface (10a) and a fiber hole (11); a built-in fiber (F1) having an insertion portion (F1a) which is inserted into the fiber hole (11) and an extension portion (F1b) which extends from the fiber hole (11); a connection fiber (F2) which is fusion-spliced to the extension portion (F1b); a temporary retaining member (20) into which the extension portion (F1b) is inserted; a heat-shrinkable sleeve (30) in which a connection point (P) of the two fibers is located and which is secured to an end portion of the temporary retaining member (20); a plug frame (40) having a frame body portion (M) and a restriction portion (45) which restricts relative movement of the ferrule (10) to the frame body portion (M); a cylindrical stop ring (50) which has a biasing surface (55a) and is locked to the plug frame (40); and a biasing member (60) which is disposed between the ferrule (10) and the biasing surface (55a) and biases the ferrule (10).
This optical fiber assembly comprises a plurality of optical fibers, and a plurality of intermittently fixed optical fiber ribbons including a plurality of fixing portions for intermittently fixing the plurality of optical fibers in the longitudinal direction thereof. The position in the longitudinal direction of a reversal portion and the position in the longitudinal direction of a switching portion in which the change of direction of a vector sum is switched are displaced from each other.
This optical fiber assembly is provided with a plurality of intermittently-fixed optical fiber ribbons and has an SZ twisting structure in which a cycle including a forward-twisted part and a reverse-twisted part is repeated in a longitudinal direction. In a cross section perpendicular to the longitudinal direction, when, in one intermittently-fixed optical fiber ribbon from among the plurality of intermittently-fixed optical fiber ribbons, the midpoint of two of the optical fibers positioned at both ends is denoted by M, the center of gravity is denoted by G, a vector having the midpoint M as a starting point and the center of gravity G as an end point is denoted by MG, a vector obtained by synthesizing the vector MG with respect to all of the plurality of intermittently-fixed optical fiber ribbons is denoted by GU, and the magnitude of the vector GU is denoted as a scalar quantity L, the average value of the scalar quantity L in all inverted regions is greater than the average value of the scalar quantity L in all rotated regions.
This optical fiber assembly comprises: a plurality of optical fibers; and a plurality of intermittently fixing tape core wires including a plurality of fixing parts for intermittently fixing the optical fibers in the longitudinal direction. The intermittently fixing tape core wires are periodically twisted. In a cross-section perpendicular to the longitudinal direction and in one of the intermittently fixing tape core wires, when the middle point and the center of gravity between two of the optical fibers located at both ends are respectively denoted by M and G, a vector being defined by the middle point M as the start point and the center of gravity G as the end point is denoted by MG, and the magnitude of the vector MG is defined as the scalar amount LT, each periodical twisting includes at least one set of the intermittently fixing tape core wires, in which the magnitude relationship in the scalar amount LT switches.
In this optical fiber unit constituting an optical fiber assembly and being obtained by layering a plurality of optical fiber ribbons, a plurality of inner-layer fiber units positioned on the radial inside of the optical fiber assembly, and a plurality of outer-layer fiber units positioned on the radial outside of the optical fiber assembly relative to the inner-layer fiber units are present in a certain cross section of the optical fiber assembly. Regarding the sine value of the angle formed by a straight line in the radial direction connecting the center of the optical fiber assembly and the center of gravity of the optical fiber ribbons, and a straight line in the width direction of the ribbons and connecting both ends of the optical fiber ribbons, the average sine value in the outer-layer fiber units is 0.366 or greater in the certain cross section, where the average sine value is the average of the sine values of the plurality of optical fiber ribbons of the same optical fiber unit.
Optical fiber units constituting an optical fiber assembly and each formed by stacking a plurality of optical fiber ribbons include, in some cross section of the optical fiber assembly, a first fiber unit located on a neutral line and a second fiber unit located farthest from the neutral line. Regarding the sine value of an angle formed by a straight line in a radial direction connecting the center of the optical fiber assembly and the center of gravity of the optical fiber ribbon and a straight line in a ribbon width direction connecting both ends of the optical fiber ribbon, the average value of the sine values of the plurality of optical fiber ribbons of the same optical fiber unit is defined as an average sine value, and in the some cross section, the average sine value in the second fiber unit is larger than the average sine value in at least one first fiber unit.
Provided is a transmission line for transmitting high-frequency waves between a pair of main surfaces of a substrate, wherein reflection loss is reduced compared to the input/output structure of a filter according to patent document 1. A transmission line (1) comprises: a substrate (10); a coplanar line (20) comprising a signal line pattern (21) and a first coplanar pattern (coplanar patterns 22, 23) that are provided on a main surface (11); and a dual-conductor line (30) comprising a first through-via (31) in electrical communication with the signal line pattern (21), and a ground conductor (through-vias 32, 33).
According to the present invention, a digital phase-shift circuit comprises a signal line that extends in a prescribed direction, two inside lines that are arranged on one side and the other side of the signal line at exactly a prescribed distance from the signal line, two outside lines that are provided on the one side and the other side at positions that are further than the inside lines from the signal line, a first ground conductor that is electrically connected to each of the inside lines and the outside lines at one end thereof in the prescribed direction, and a second ground conductor that is electrically connected to the outside lines at the other end thereof in the prescribed direction. A multilayer structure is formed between the outside lines and the inside lines at one or both of the first ground conductor and the second ground conductor.
Provided is a digital phase-shift circuit comprising: a signal line extending in a predetermined direction; inner lines disposed on one side and another side of the signal line and spaced apart from the signal line by a predetermined distance; outer lines provided on the one side and the other side at positions farther from the signal line than the inner lines; a first ground conductor electrically connected to respective one ends of the inner lines and the outer lines; and a second ground conductor electrically connected to the other ends of the outer lines. The predetermined distance is set to be less than 10 μm.
A first optical combiner 4A comprises: a plurality of first input optical fibers 10 each including a core 11, a first cladding 12a that surrounds the core 11 and has a lower refractive index than the refractive index of the core 11, a second cladding 12b that surrounds the first cladding 12a and has a lower refractive index than the refractive index of the first cladding 12a, and a third cladding 12c that surrounds the second cladding 12b and has a lower refractive index than the refractive index of the second cladding 12b; and a first bridge fiber 20 having an incident surface 26 that is optically coupled to the core 11 of the plurality of first input optical fibers 10, and an emission surface 27 that emits light obtained by multiplexing of the light entering from the first input optical fibers 10.
G02B 6/036 - Fibres optiques avec revêtement le noyau ou le revêtement comprenant des couches multiples
B23K 26/064 - Mise en forme du faisceau laser, p.ex. à l’aide de masques ou de foyers multiples au moyen d'éléments optiques, p.ex lentilles, miroirs ou prismes
G02B 6/42 - Couplage de guides de lumière avec des éléments opto-électroniques
H01S 3/091 - Procédés ou appareils pour l'excitation, p.ex. pompage utilisant le pompage optique
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p.ex. commutation, ouverture de porte, modulation ou démodulation
A pull-end attachment structure (1) comprises: a cable (10) having an optical fiber; a tubular dam case (20) that is fixed to the cable so as to surround the cable; a tubular member (30) to which a hose (100) with a pulling part for accommodating an end of the optical fiber is attached and which is provided so as to surround the outer peripheral surface of the dam case; and a tubular fixed member (40) that surrounds the cable and that can be fixed to the tubular member. An outer diameter (R1) of the fixed member is equal to or less than an outer diameter (R2) of the tubular member. Formed on the inner peripheral surface of the fixed member is a contact surface (43a) that delivers a pulling force to the dam case by making contact with the dam case when the tubular member and the fixed member are pulled by the hose with pulling part.
G02B 6/44 - Structures mécaniques pour assurer la résistance à la traction et la protection externe des fibres, p.ex. câbles de transmission optique
H02G 1/06 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour poser les câbles, p.ex. appareils de pose sur véhicule
H02G 1/08 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour poser les câbles, p.ex. appareils de pose sur véhicule à travers des tubes ou conduits, p.ex. tringles ou fil de tirage pour pousser ou tirer
Provided is a laser device that makes it possible to detect return light propagating through a plurality of optical waveguides within an output optical fiber by means of a simple and inexpensive structure. This laser device 1 comprises: an output optical fiber 40 which includes a center core 41 and a ring core 43; a plurality of laser light sources 11, 12 which generate laser beams; input optical fibers 20, 30 through which laser beams propagate; an optical combiner 50 which is configured so as to optically connect the input optical fibers 20, 30 with the center core 41 and ring core 43 of the output optical fiber 40; a laser emission unit 60 which emits the laser beams that have been introduced into the center core 41 and ring core 43 of the output optical fiber 40; and a return light detection unit 7 which is capable of detecting both first return light returning toward the optical combiner 50 from the laser emission unit 60 via the center core 41 of the output optical fiber 40 and second return light returning toward the optical combiner 50 from the laser emission unit 60 via the ring core 43 of the output optical fiber 40.
B23K 26/064 - Mise en forme du faisceau laser, p.ex. à l’aide de masques ou de foyers multiples au moyen d'éléments optiques, p.ex lentilles, miroirs ou prismes
B23K 26/00 - Travail par rayon laser, p.ex. soudage, découpage ou perçage
G02B 6/036 - Fibres optiques avec revêtement le noyau ou le revêtement comprenant des couches multiples
G02B 6/42 - Couplage de guides de lumière avec des éléments opto-électroniques
83.
OPTICAL CABLE STRUCTURE AND OPTICAL CABLE STRUCTURE PRODUCTION METHOD
This optical cable structure is equipped with a plurality of connector-equipped optical fibers (1) which are housed in a tubular member (100) and are drawn out from an end section of a sheath (S) of an optical cable (C). The plurality of connector-equipped optical fibers (1) are each equipped with a drawn optical fiber (2) which is drawn from the end section of a sheath (S) and an optical connector (3) which is provided to the tip end section of the drawn optical fiber (2). The lengths of the plurality of drawn optical fibers (2) are different. The plurality of drawn optical fibers (2) each have a base end-side optical fiber (5) positioned on the sheath (S) end section side, a tip end-side optical fiber (6) positioned on the optical connector (3) side, and a connecting section (7) for connecting the base end-side optical fiber (5) and the tip end-side optical fiber (6) to one another. The plurality of connecting sections (7) are located inside the tubular member (100) in the state in which the plurality of connector-equipped optical fibers (1) are housed by the tubular member (100).
This optical connection structure (1) comprises a first ferrule (10), a second ferrule (20), and a split sleeve (30) having a through-hole into which at least a portion of the first ferrule and at least a portion of the second ferrule are inserted, wherein: the split sleeve has a first end (30a) into which the first ferrule is inserted, and a second end (30b) into which the second ferrule is inserted; and when the dimension of a first tapered surface (10ca) is defined as x1, the distance between a first connection end surface (10a) and the first end (30a) as y1, the dimension of a second tapered surface (20ca) as x2, and the distance between a second connection end surface (20a) and the second end (30b) as y2, the following expression a, b, and c are established. a: X=x1/x2 b: Y=y1/y2 c: (3X+2)/5
An optical cable (1) according to the present disclosure comprises a tension member (2), a plurality of optical fibers (5) disposed on the outer circumference of the tension member, and an external covering (8) accommodating the tension member and the plurality of optical fibers. The boundary elongation of the tension member is smaller than the boundary elongation of the optical fibers. The boundary elongation is the cable elongation corresponding to the boundary between an initial elongation region and an elastic region. The initial elongation region is the range of the cable elongation when in a case where a cable elongation occurs due to tension being applied, the initial elongation occurs in a member that is the tension member or the optical fiber due to deformation of the member so as to approach a straight shape along the cable longitudinal direction. The elastic region is the range of the cable elongation when in a case where the cable elongation further occurs from the initial elongation region, an elastic elongation corresponding to an elastic coefficient of the member occurs in the member.
This heat pipe comprises: a container in which a working fluid is encapsulated; and a first wick part. The container includes: an internal space; and an inner circumferential surface facing the internal space. The first wick part is accommodated in the internal space. A steam channel is formed in the internal space. The container includes a second wick part. The second wick part has a plurality of grooves formed in the inner circumferential surface of the container. The first wick part has a pore layer and a holding layer that holds the pore layer. The pore layer has an effective pore radius which is smaller than the second wick part. The first wick part is in contact with the steam channel and the second wick part.
F28D 15/02 - Appareils échangeurs de chaleur dans lesquels l'agent intermédiaire de transfert de chaleur en tubes fermés passe dans ou à travers les parois des canalisations dans lesquels l'agent se condense et s'évapore, p.ex. tubes caloporteurs
F28D 15/04 - Appareils échangeurs de chaleur dans lesquels l'agent intermédiaire de transfert de chaleur en tubes fermés passe dans ou à travers les parois des canalisations dans lesquels l'agent se condense et s'évapore, p.ex. tubes caloporteurs avec des tubes ayant une structure capillaire
87.
OPTICAL FIBER CABLE AND METHOD FOR LAYING OPTICAL FIBER CABLE
An optical fiber cable (100) comprises: a plurality of sub-cables (10); and an outer layer sheath (120) that accommodates therein the sub-cables. At least one sub-cable included in the sub-cables has: a plurality of optical fibers (11a); a sheath (21) which accommodates therein the optical fibers and in which projection parts and recessed parts are formed so as to be disposed alternately on the outer surface in the circumferential direction; and a tensile strength member (30) disposed inside the sheath.
G02B 6/44 - Structures mécaniques pour assurer la résistance à la traction et la protection externe des fibres, p.ex. câbles de transmission optique
G02B 6/52 - Installation souterraine ou sous l'eau; Installation à travers des tubes, des conduits ou des canalisations en utilisant un fluide, p.ex. de l'air
A ferrule holding structure (1) comprising: an optical fiber (11); a ferrule (12) which holds the optical fiber (11), the optical fiber (11) being inserted therethrough from the trailing end to a connecting end face (121) that is the leading end; a biasing member (13) which biases the ferrule (12) in the forward direction from the trailing end toward the connecting end face (121); a housing (3) which houses therein the biasing member (13) and at least a portion of the ferrule (12); and a support member (4) which engages with the housing (3) to support the trailing end side of the biasing member (13), wherein the support member (4) has a guide portion (41) that makes it possible to move the support member (4) relative to the housing (3) in a direction intersecting the forward-rearward direction, and a pressing surface (42) that presses the biasing member (13) in the forward direction as the pressing surface (42) moves toward one side in the intersecting direction to the position of engagement with the housing (3).
A ferrule holding structure (1) includes an optical fiber (11), a ferrule (12) that holds the optical fiber (11) by inserting the optical fiber (11) from the rear end to a connecting end surface (121), which is the front end, a biasing member (13) that biases the ferrule forward from the rear end toward the connecting end surface, a housing (3) that accommodates at least part of the ferrule (12) and the biasing member (13) inside thereof, a support member (4) that engages with the housing (3) and supports the rear end side of the biasing member (13), and a rotation mechanism (5) that is configured by a part of the support member (4) and a part of the housing (3) and rotatably attaches the support member (4) to the housing (3), wherein the support member (4) has a pressing surface (471) that pushes the biasing member (13) forward as the support member is rotated by the rotation mechanism (5) with respect to the housing (3).
According to the present invention, in an optical computing device in which a plurality of microcells provided in a matrix form are arranged by stacking on each other, variations in cell size and position caused by dehydration shrinkage are suppressed. An optical computing device (10) comprises a plurality of optical diffraction layers (L1, L2, L3) stacked on each other. In the optical computing device (10), each of the optical diffraction layers (L1, L2, L3) has a refractive index individually set and includes a plurality of microcells (Cijk) arranged in a matrix form. The plurality of optical diffraction layers (L1, L2, L3) are contained in a dry gel (11).
G06E 3/00 - Dispositifs non prévus dans le groupe , p.ex. pour traiter des données analogiques hybrides
G06N 3/067 - Réalisation physique, c. à d. mise en œuvre matérielle de réseaux neuronaux, de neurones ou de parties de neurone utilisant des moyens optiques
91.
FIBER ASSEMBLY AND METHOD FOR MANUFACTURING FIBER ASSEMBLY
The present invention attains a fiber assembly that has a higher degree of freedom regarding combinations of orientations of multicore fibers than conventionally or that can be manufactured more easily than conventionally. A plurality of multicore fibers (MF1-MFna) are bundled so that multicore fibers each having a first end surface (σ1) located at the first end surface (τ1) side of a tape core wire (T) and multicore fibers each having a second end surface (σ2) located at the first end surface (τ1) side of the tape core wire (T) are mixed together.
An optical fiber ribbon according to the present invention is provided with: a plurality of optical fibers arrayed along an array direction that is perpendicular to the lengthwise direction; and a plurality of joint sections. The plurality of joint sections are each formed between a pair of the optical fibers that are adjacent to each other with respect to the array direction. The plurality of joint sections are disposed non-contiguously with respect to the lengthwise direction and the array direction. The optical fiber ribbon has a first high-density region and a low-density region that are adjacent to each other with respect to the lengthwise direction. In the first high-density region, among the plurality of joint sections, at least two joint sections having mutually different positions with respect to the lengthwise direction and the array direction are disposed. The number density of the joint sections in the low-density region is lower than the number density of the joint sections in the first high-density region. The maximum value of the amount of increase in transmission loss that occurs with light having a wavelength of 1550 nm and propagated through the optical fibers in a kink test is not greater than 1 dB.
The purpose of the present invention is to provide an optical connection structure that can reduce the load on an optical integrated circuit. This optical connection structure (1A) comprises a substrate (10), an optical integrated circuit (20), a micro-lens array (30), a ferrule (40), and a receptacle (50). The optical integrated circuit (20) has an input/output unit that receives and emits optical signals, and is electrically connected to the substrate (10). The micro-lens array (30) has a first lens (L1) disposed at a position corresponding to the input/output unit. The ferrule (40) has a second lens (L2), and a fiber hole (41) into which an optical fiber (F) that causes the optical signal to be incident on the second lens (L2) can be inserted. The receptacle (50) supports the ferrule (40). The optical integrated circuit (20) and the receptacle (50) are fixed to the micro-lens array (30). When the receptacle (50) supports the ferrule (40), the second lens (L2) faces the first lens (L1).
An optical fiber cable 1 comprising a multi-core optical fiber 30 including a plurality of cores 32A-32D has arrangement information associated with the multi-core optical fiber 30, wherein the arrangement information is associated with the arrangement of the multiple cores 32A-32D in the cross section of the multicore optical fiber 30.
This superconducting wire material comprises: a superconducting layered body that has a metal substrate and an oxide superconducting layer; and a stabilizing part which is formed so as to cover the superconducting layered body and which has a larger coefficient of thermal expansion than the metal substrate. The superconducting layered body includes: a first primary surface that is a surface on the side on which the oxide superconducting layer is provided; and a second primary surface that is a surface on the side on which the metal substrate is provided. The stabilizing part includes: a first section which faces the first primary surface; and a second section which faces the second primary surface. The thickness of the second section is greater than the thickness of the first section.
H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
H01F 6/06 - Bobines, p.ex. dispositions pour l'enroulement, l'isolation, les enveloppes ou les bornes des bobines
96.
ESTIMATION METHOD, MEASUREMENT METHOD, AND INFORMATION PROCESSING DEVICE
The present invention realizes an estimation method for estimating variation in measurement of group delay in an optical fiber. The estimation method (S1) includes an estimation step (S13) for estimating variation in measurement of group delay when light generated by a light source is inputted into an optical fiber, the estimation being made from the loss of the optical fiber and/or the power of the light source, using a relationship defined in advance.
In order to implement an optical operation device which can execute a bidirectional optical operation, this optical operation device (1) comprises an optical modulation element group (11) composed of one or more optical modulation elements (11a1, 11a2, …). The optical modulation element group (11) is configured to perform a predetermined first optical operation on first signal light (L1) that travels along a specific optical path (P), and perform a predetermined second optical operation on second signal light (L2) that travels inversely to the first signal light (L1) along the specific optical path (P).
G06E 3/00 - Dispositifs non prévus dans le groupe , p.ex. pour traiter des données analogiques hybrides
G06G 7/60 - Calculateurs analogiques pour des procédés, des systèmes ou des dispositifs spécifiques, p.ex. simulateurs d'êtres vivants, p.ex. leur système nerveux
G06N 3/067 - Réalisation physique, c. à d. mise en œuvre matérielle de réseaux neuronaux, de neurones ou de parties de neurone utilisant des moyens optiques
This optical connector connecting structure comprises: an optical connector having a connecting end surface on which a plurality of first cores disposed on a virtual circumference around a predetermined central axis are exposed; and an adapter within which an end surface to be connected, on which a plurality of second cores disposed on the same circumference as the virtual circumference are exposed, is disposed, and which has an opening into which the optical connector is insertable in a state where the connecting end surface of the optical connector faces the end surface to be connected, and is able to connect the plurality of second cores exposed on the end surface to be connected and the plurality of first cores exposed on the connecting end surface. The optical connector is insertable into the opening of the adapter in a plurality of different attitudes around the central axis. In a state where the optical connector is inserted into the opening of the adapter in each of the attitudes, the plurality of first cores exposed on the connecting end surface of the optical connector are connected to the plurality of second cores exposed on the end surface to be connected.
This temperature measuring device comprises a heat pipe including a container inside which a working fluid is sealed, a temperature sensor for detecting a temperature of the heat pipe, and a wire portion connected to the temperature sensor, wherein the heat pipe accepts heat from a plurality of heat sources.
H01L 23/34 - Dispositions pour le refroidissement, le chauffage, la ventilation ou la compensation de la température
F28D 15/02 - Appareils échangeurs de chaleur dans lesquels l'agent intermédiaire de transfert de chaleur en tubes fermés passe dans ou à travers les parois des canalisations dans lesquels l'agent se condense et s'évapore, p.ex. tubes caloporteurs
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
G01K 1/14 - Supports; Dispositifs de fixation; Dispositions pour le montage de thermomètres en des endroits particuliers
G01K 1/16 - Dispositions particulières pour conduire la chaleur de l'objet à l'élément sensible
H01M 10/613 - Refroidissement ou maintien du froid
H01M 10/6551 - Surfaces spécialement adaptées à la dissipation de la chaleur ou à la radiation, p.ex. nervures ou revêtements
H01M 10/6552 - Tubes fermés transférant la chaleur par conductivité thermique ou par transition de phase, p.ex. tubes caloporteurs
H01M 10/6563 - Gaz avec circulation forcée, p.ex. par des soufflantes
A ferrule (1A) is provided with a ferrule body part (10) and a protruding part (20). The ferrule body part (10) has a connection end surface (10a) and a plurality of fiber holes (11). A plurality of optical fibers (F) are inserted through the plurality of fiber holes (11). The plurality of fiber holes (11) are arranged in a first direction (Y direction). The protruding part (20) protrudes in the first direction (Y direction) from the ferrule body part (10). When the direction to which the connection end surface (10a) is oriented in the longitudinal direction of the plurality of fiber holes (11) is defined as front, and the opposite direction thereto as rear, the protruding part (20) has protruding part rear surfaces (20b) facing rearward. The distance between the protruding part rear surfaces (20b) and the connection end surface (10a) in the longitudinal direction is shorter than the distance between the protruding part rear surfaces (20b) and the rear end (10b) of the ferrule body part in the longitudinal direction.
brevets
