An optical fiber ribbon includes: optical fibers disposed side by side in a predetermined direction; and connecting portions that connect two adjacent ones of the optical fibers. A peripheral resin portion is formed on a periphery of the optical fibers. An arithmetic mean roughness Ra of a surface of the peripheral resin portion is 0.41 μm or lower. A ten-point mean roughness Rz of a surface of the peripheral resin portion is 1.4 μm or lower.
A cable that protects an object includes a sheath and a cylindrical reinforcement member disposed inside the sheath and that surrounds the object. The cylindrical reinforcement member has a first side edge and a second side edge that extend in a longitudinal direction. The cylindrical reinforcement member is formed of a cable reinforcement sheet including a first metal sheet and a second metal sheet joined to the first metal sheet. A portion of the first metal sheet overlaps a portion of the second metal sheet, and the overlapping portions define a joint portion where the first metal sheet and the second metal sheet are joined. The joint portion is inclined, from the second side edge to the first side edge, toward the first metal sheet.
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.
OPTICAL DIFFRACTION ELEMENT, OPTICAL COMPUTING DEVICE, METHOD FOR ADJUSTING POSITION OF OPTICAL DIFFRACTION ELEMENT, AND METHOD FOR MANUFACTURING OPTICAL COMPUTING DEVICE
A light diffraction element includes a computing optical structure constituted by microcells, and a position adjustment optical structure outside the computing optical structure.
An optical computing device includes a light diffraction element group including light diffraction elements each having an optical computing function, and a light receiver that detects respective intensities of wavelength components contained in signal light outputted from the light diffraction element group. The light diffraction elements are disposed side by side on a light path of the signal light inputted into the light diffraction element group such that the signal light passes sequentially through the light diffraction elements.
A cold plate includes: a metal base plate having a first surface, a second surface on a side opposite the first surface, and fins disposed in parallel on the first surface; and a topped cylindrical resin cover covering the fins. The first surface has a recessed portion recessed toward the second surface. The topped cylindrical resin cover is heat-fused to the metal base plate on an inner surface of the recessed portion.
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 computing device includes: a light diffraction element group including light diffraction elements having an optical computing function, wherein the light diffraction element group passes light through the light diffraction elements in turn, the light passing through the light diffraction elements was either: reflected or scattered from a non-illuminant object located outside the optical computing device, or emitted from an illuminant object located outside the optical computing device, and neither the non-illuminant object nor the illuminant object is a display.
A method for manufacturing a stereolithographically fabricated object includes separately irradiating, with light, respective n regions R1 to Rn of a photo-curable resin, where n is an integer of not less than 2. An overlap area of the region Ri overlaps a part of the region Rj, where i is an integer that satisfies 1≤i≤n and j is an integer that satisfies 1≤j≤n and j≠i. The photo-curable resin is cured in a part or an entirety of the overlap area by irradiating the region Ri with the light.
B29C 64/129 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p.ex. dépôt d’un cordon continu de matériau visqueux utilisant des couches de liquide à solidification sélective caractérisés par la source d'énergie à cet effet, p.ex. par irradiation globale combinée avec un masque
B29C 64/268 - Agencements pour irradiation par faisceaux d’électrons [FE]
A cleaning tool includes: a first tape including an adhesive surface; a head around which the first tape is wrapped and that presses the adhesive surface against an object; a feeder that transports the first tape and a second tape in contact with the adhesive surface; and a separator that separates the first tape from the second tape during transportation of the first tape to the head.
A capacitance sensor includes a translucent base film, a translucent resist layer disposed on a part of a main surface of the translucent base film and having higher adhesion to a conductive polymer than to the translucent base film, and a translucent electrode including a conductive material containing the conductive polymer and disposed on a surface of the translucent resist layer opposite to a surface of the translucent resist layer on which the translucent base film is disposed. When viewed along a thickness direction of the translucent base film, a region of the main surface of the translucent base film where the translucent resist layer is not disposed surrounds the translucent electrode.
G01V 3/08 - Prospection ou détection électrique ou magnétique; Mesure des caractéristiques du champ magnétique de la terre, p.ex. de la déclinaison ou de la déviation fonctionnant au moyen de champs magnétiques ou électriques produits ou modifiés par les objets ou les structures géologiques, ou par les dispositifs de détection
13.
LIGHT DIFFRACTION ELEMENT UNIT AND OPTICAL COMPUTATION DEVICE
A light diffraction element unit includes a base material including a light-transmissive and flexible layer member, a light diffraction structure including microcells and disposed on a portion of a main surface of the base material, and a holding part holding the base material and including a layer member or a plate member having an opening that penetrates through a pair of main surfaces of the layer member or the plate member. The holding part holds an annular portion of the base material such that the light diffraction structure is encompassed in the opening. The annular portion surrounds the portion of the main surface of the base material.
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
14.
COMPONENT-INCORPORATED SUBSTRATE AND METHOD FOR MANUFACTURING SAME
A component-incorporated substrate of multi-layer structure includes: a first printed wiring base having an opening; a second printed wiring base in a first side of the first printed wiring base; a third printed wiring base in a second side of the first printed wiring base; an electronic component housed in the opening of the first printed wiring base; a via penetrating one or more of the first printed wiring base, the second printed wiring base and the third printed wiring base; and an adhesive layer that fills a gap between the electronic component and the opening, a gap between the first printed wiring base and the second printed wiring base, and a gap between the first printed wiring base and the third printed wiring base.
H05K 1/03 - Emploi de matériaux pour réaliser le substrat
H05K 1/11 - Eléments imprimés pour réaliser des connexions électriques avec ou entre des circuits imprimés
H05K 1/18 - Circuits imprimés associés structurellement à des composants électriques non imprimés
H05K 3/00 - Appareils ou procédés pour la fabrication de circuits imprimés
H05K 3/10 - Appareils ou procédés pour la fabrication de circuits imprimés dans lesquels le matériau conducteur est appliqué au support isolant de manière à former le parcours conducteur recherché
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.
An optical fabrication device includes a light source that emits light and cures a photo-curable resin, a digital micromirror device that reflects the light and projects a predetermined pattern, a microlens array disposed downstream of the digital micromirror device and that transmits the light that has been reflected by the digital micromirror device, an objective disposed downstream of the microlens array and that causes the light that has been transmitted through the microlens array to form an image, a container that holds the photo-curable resin, a sample platform disposed inside the container, and a controller that controls the digital micromirror device and causes the light to form an image having the predetermined pattern at each of levels that are different in distance from a main face of the sample platform.
B29C 64/124 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p.ex. dépôt d’un cordon continu de matériau visqueux utilisant des couches de liquide à solidification sélective
B29C 64/393 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
B33Y 30/00 - Appareils pour la fabrication additive; Leurs parties constitutives ou accessoires à cet effet
B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
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
17.
OPTICAL COMPUTATION DEVICE AND OPTICAL COMPUTATION METHOD
An optical computing device includes a light diffraction element group including light diffraction elements each having an optical computing function, and a light emitter that generates signal light inputted into the light diffraction element group and indicative of images formed by different optical systems.
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
A rare-earth doped fiber includes: a core having a radius R and having a doped region to which a rare-earth element has been doped, the doped region ranging from a center of the core to a radius Rre; and a cladding surrounding a circumference of the core and having a refractive index lower than a refractive index of the core. A normalized frequency V at an operating wavelength is greater than or equal to 2.4 and less than or equal to 4.5. The radius Rre is in a range of 0
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.
A manufacturing tool for an optical connector includes: a tool body that includes a concave part; a handle that includes an operating part and a contact part; and a connecting shaft that rotatably connects the handle to the tool body. The handle is rotatable between: a stand-by position, and a push-into position in which a larger portion of the contact part is disposed inside the concave part than in the stand-by position. A direction in which the operating part moves is different from a direction in which the contact part moves.
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
An optical connector includes: a ferrule holding an optical fiber; a holder holding the ferrule; a protection sleeve including a tip that is fixed to a sleeve fixing portion of the holder; an inner housing in which at least a part of the sleeve fixing portion is housed; and an outer housing in which at least a part of the inner housing is housed. The inner housing includes a tab portion that tilts in a radial direction of the ferrule and applies a pressure on the protection sleeve by tilting inward in the radial direction in a state in which the tab portion is disposed inside the outer housing.
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
An optical cable includes an optical fiber, an outer sheath that houses the optical fiber, and a tubular reinforcement sheet disposed between the optical fiber and the outer sheath. In a cross section perpendicular to a length direction of the optical cable, an adhesive strength between the tubular reinforcement sheet and the outer sheath in a first zone is stronger than an adhesive strength between the tubular reinforcement sheet and the outer sheath in a second zone.
A stereolithography device includes: a container that stores a photocurable resin before curing, the container having a bottom plate that is optically transparent; a holder configured to be immersed into the photocurable resin; a reaction light irradiation section configured to irradiate a reaction light that accelerates curing of the photocurable resin, wherein the reaction light passes through a boundary surface between the bottom plate and the photocurable resin; and an inhibition light irradiation section configured to irradiate an inhibition light that inhibits curing of the photocurable resin, wherein the inhibition light is totally reflected at the boundary surface.
B29C 64/124 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p.ex. dépôt d’un cordon continu de matériau visqueux utilisant des couches de liquide à solidification sélective
B29C 64/255 - Enceintes pour le matériau de construction, p.ex. récipients pour poudre
An optical fiber cable includes: a core including optical fibers; a reinforcing wrap that surrounds the core; and a sheath that accommodates the core and the reinforcing wrap. The reinforcing wrap includes an overlapping portion. A first end portion of the reinforcing wrap overlaps a second end portion of the reinforcing wrap at a portion of the reinforcing wrap in a circumferential direction of the optical fiber cable in a cross-sectional view.
G02B 6/44 - Structures mécaniques pour assurer la résistance à la traction et la protection externe des fibres, p.ex. câbles de transmission optique
B29C 48/154 - Revêtement d’articles pleins, c. à d. d’articles non creux
B29C 48/09 - Objets dont la section transversale comporte des cavités partiellement ou entièrement fermées, p.ex. tuyaux ou canaux
B29C 48/00 - Moulage par extrusion, c. à d. en exprimant la matière à mouler dans une matrice ou une filière qui lui donne la forme désirée; Appareils à cet effet
31.
OPTICAL FIBER PREFORM PRODUCTION METHOD, OPTICAL FIBER PREFORM, AND OPTICAL FIBER PRODUCTION METHOD
An optical fiber preform includes: a cladding glass body that is a cladding of an optical fiber, is cylindrical, and comprises an inner hole along an axial direction; a glass rod accommodated in the inner hole; and a dummy silica rod selected from either one of a first solid dummy silica rod fixed to a first end of the cladding glass body that closes a first end of the inner hole positioned at the first end of the cladding glass body, or a second solid dummy silica rod accommodated and integrated in a connecting glass tube fixed to the first end to close a first tip opening end of the connecting glass tube. A tip seal that closes a second end of the inner hole at a second end of the cladding glass body is provided in the second end of the cladding glass body.
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
35.
INSPECTION METHOD FOR OPTICAL FIBER, INSPECTION DEVICE FOR OPTICAL FIBER, AND METHOD FOR MANUFACTURING OPTICAL FIBER-WOUND BOBBIN
An inspection method, for an optical fiber including a bare optical fiber and a light-transmitting coating layer that coats an outer peripheral surface of the bare optical fiber, includes: irradiating, with illumination light having directivity, an outer peripheral surface of a wound body that includes the optical fiber wound in multiple layers around a bobbin; receiving the illumination light reflected by the wound body and generating image data containing at least a part of an image of the illumination light; and determining, based on the image data, whether a stripe pattern is projected in the image. The stripe pattern is a state in which the illumination light repeatedly changes along a winding direction of the optical fiber.
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
37.
OPTICAL MEMORY, OPTICAL DIFFRACTION ELEMENT, AND RECORDING METHOD
An optical memory includes a support and nanoparticles, each of which changes between a crystal phase and an amorphous phase when irradiated with light. The nanoparticles are supported by the support and spaced apart from each other in one or both of an in-plane direction of a face of the support and a direction normal to the face of the support.
G11B 7/1353 - Moyens pour guider le faisceau de la source au support d'enregistrement, ou du support d'enregistrement au détecteur Éléments de diffraction, p.ex. hologrammes ou réseaux
G11B 7/0033 - Systèmes d'enregistrement, de reproduction ou d'effacement caractérisés par la forme du support avec des cartes
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
39.
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.
The power splitter-combiner (1) includes one combining terminal (11), two split terminals (12a, 12b), an absorption resistance (13) connected between the two split terminals, a first transmission line (14a) connected between the combining terminal and one split terminal of the two split terminals, a second transmission line (14b) connected between the combining terminal and the other split terminal of the two split terminals and having a length shorter than that of the first transmission line, and at least one first open stub (15) connected to the second transmission line.
H01P 1/213 - Sélecteurs de fréquence, p.ex. filtres combinant ou séparant plusieurs fréquences différentes
H01P 5/18 - Dispositifs à accès conjugués, c. à d. dispositifs présentant au moins un accès découplé d'un autre accès consistant en deux guides couplés, p.ex. coupleurs directionnels
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.
An end part structure for an optical connector includes a ferrule having a connection end face and a fiber hole into which an optical fiber is inserted up to the connection end face, a spring disposed at a rear side of the ferrule in a longitudinal direction of the fiber hole, a spring push that surrounds the optical fiber, a housing that accommodates the ferrule and the spring and to which the spring push is locked such that the ferrule is biased forward by the spring, a braided tube mounted on the spring push, and a fixing member that fixes the braided tube to the spring push. The spring is sandwiched between the spring push and the ferrule in the longitudinal direction.
A boot configured to be attached to a ferrule includes: a fiber insertion hole into which optical fibers are inserted; a lower part on one side with respect to the fiber insertion hole; and an upper part on another side with respect to the fiber insertion hole. The fiber insertion hole is disposed to correspond with fiber holes of the ferrule that are disposed in an array in one direction. The upper part includes a protrusion part that protrudes relative to an end surface of the lower part in a fiber insertion direction. The ferrule includes: an adhesive filling part configured to be filled with an adhesive; and a stepped part that guides the optical fibers into the fiber holes.
An optical computing device includes a substrate and planar light diffraction elements. Each of the planar light diffraction elements is fixed to the substrate and includes microcells that have respective thicknesses or refractive indices set independently.
A ferrule for an optical connector includes: a body portion having fiber holes into which optical fibers are inserted, and a connecting end face through which the fiber holes are opened. The fiber holes include: first fiber holes disposed at a predetermined pitch in a first direction on the connecting end face; and second fiber holes disposed at the predetermined pitch in the first direction and at positions different from positions of the first fiber holes in a second direction orthogonal to the first direction. The positions of the second fiber holes are shifted by substantially half the predetermined pitch in the first direction with respect to the positions of the first fiber holes. A rear side of the body portion is opposite to the connecting end face in an insertion direction of the fiber holes.
A fiber laser device includes: a first pumping light source that outputs a first pumping light of a first wavelength; a second pumping light source that outputs a second pumping light of a second wavelength that is shorter than the first wavelength; an amplifying fiber that includes a core including an active element that is configured to be excited by the first pumping light and the second pumping light; an HR-FBG (High Reflectivity-Fiber Bragg Grating) on a side of a first end of the amplifying fiber; an OC-FBG (Output Coupler-Fiber Bragg Grating) disposed on a side of a second end of the amplifying fiber and that has a reflectance lower than a reflectance of the HR-FBG; and a first coupler that couples the first pumping light to the amplifying fiber from the side of the first end.
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
A digital phase shifter includes 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 units connected between two digital phase shift circuit groups. At least one of the digital phase shift circuits constituting at least one digital phase circuit group is a mitigation circuit that mitigates a distribution of phase shift amounts.
A method is provided for manufacturing an optical computing device using a container that includes n side walls WS1 to WSn and n bottom walls WB1 to WBn made of an optically-transparent material, where n is a natural number of not less than 2. The method includes: forming the container including an i-th cavity Ci, using at least an i-th bottom wall WBi and an i-th side wall WSi, where i is an integer of 1≤i≤n; filling the cavity Ci with a liquid material Ri containing a photo-curable resin; and forming a light diffraction element on one main surface of the bottom wall WBi through stereolithography by emitting light to a part near an interface between the bottom wall WBi and the liquid material Ri to cure the photo-curable resin.
G06E 1/00 - Dispositions pour traiter exclusivement des données numériques
B29C 64/124 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p.ex. dépôt d’un cordon continu de matériau visqueux utilisant des couches de liquide à solidification sélective
B33Y 80/00 - Produits obtenus par fabrication additive
B29C 64/277 - Agencements pour irradiation utilisant des moyens de rayonnement multiples, p.ex. des micro-miroirs ou des diodes électroluminescentes multiples [LED]
A digital phase shifter includes a plurality of digital phase shift circuit groups in which a plurality of digital phase shift circuits are connected in cascade, one or more relay digital phase shift circuits (digital phase shift circuits) provided between two digital phase shift circuit groups, and two or more bend-type connection units configured to connect one of the two digital phase shift circuit group and the relay digital phase shift circuit and connect the other of the two digital phase shift circuit groups and the relay digital phase shift circuit. At least one of the digital phase shift circuits constituting at least one digital phase shift circuit group and the relay digital phase shift circuit is a mitigation circuit that mitigates the distribution of phase shift amounts.
An optical fiber cable includes: a sheath including recesses and protrusions that are alternately disposed in a circumferential direction on an outer circumferential surface of the sheath; a core that includes optical fibers and is accommodated in the sheath; tensile strength members embedded in the sheath; and a ripcord that is embedded in the sheath. A marking portion protruding outward in a radial direction is disposed in the sheath. The ripcord is disposed between the marking portion and the core.
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).
An optical wiring unit includes a tray, an operating member supported by the tray and that moves in a front-rear direction of the optical wiring unit as a reference to a neutral position, a slide piece including a latch, and one or more springs that bias the operating member toward the neutral position. The slide piece slides with respect to the operating member between a restriction position and a release position. A protrusion amount of the slide piece from the operating member at the release position is smaller than a protrusion amount of the slide piece from the operating member at the restriction position. The slide piece is disposed at the restriction position when the operating member is at the neutral position and slides toward the release position when the operating member moves in the front-rear direction from the neutral position.
A ferrule includes a main body including inner and outer walls and a connection end surface at which a tip of an optical fiber is to be disposed. The inner wall has fiber holes. The ferrule includes an adhesive filling part disposed in the main body on an opposite side from the connection end surface with respect to the inner wall, an upper opening that opens from the outer wall to the adhesive filling part, and a lower opening that opens from the outer wall to the adhesive filling part and is disposed on an opposite side from the upper opening. The inner wall has a first surface and a second surface protruding toward the adhesive filling part from the first surface. The upper opening is opened in a location along the first surface. The lower opening is opened in a location along the second surface.
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
A high frequency variable attenuation circuit includes an input terminal, an output terminal, a first resistor, a second resistor, a third resistor, and a first switching circuit. The first switching circuit has an output side resistor and an output side switching element that are connected in series to each other. The first switching circuit has a first circuit end connected to the second end of the second resistor and the output terminal, and a second circuit end connected to the ground.
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 fiber cable includes: optical fibers each including a glass portion including a core and a cladding surrounding the core, a primary covering layer covering the cladding, and a secondary covering layer covering the primary covering layer; and a sheath accommodating the optical fibers in an internal space. A value of a micro-bend loss characteristic factor FμBL_GO is 5.2×1023 or less when represented by
An optical fiber cable includes: optical fibers each including a glass portion including a core and a cladding surrounding the core, a primary covering layer covering the cladding, and a secondary covering layer covering the primary covering layer; and a sheath accommodating the optical fibers in an internal space. A value of a micro-bend loss characteristic factor FμBL_GO is 5.2×1023 or less when represented by
FμBL_GO=FμBL_G×FμBL_O×Dc
An optical fiber cable includes: optical fibers each including a glass portion including a core and a cladding surrounding the core, a primary covering layer covering the cladding, and a secondary covering layer covering the primary covering layer; and a sheath accommodating the optical fibers in an internal space. A value of a micro-bend loss characteristic factor FμBL_GΔβ is 1.2×10−9 or less when represented by
An optical fiber cable includes: optical fibers each including a glass portion including a core and a cladding surrounding the core, a primary covering layer covering the cladding, and a secondary covering layer covering the primary covering layer; and a sheath accommodating the optical fibers in an internal space. A value of a micro-bend loss characteristic factor FμBL_GΔβ is 1.2×10−9 or less when represented by
FμBL_GΔβ=FμBL_G×FμBL_Δβ×Dc.
A wiring board includes a first substrate, a second substrate composed of a material different from a material of the first substrate, a wiring supported by the first substrate, and a terminal supported by the second substrate and connected to the wiring. The first and second substrates are disposed on a same side with respect to the wiring. In a plan view, the first substrate overlaps the wiring but not the terminal. In the plan view, the second substrate overlaps the terminal.
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.
A variable gain amplifier includes a differential amplifier circuit having a pair of input terminals and a pair of output terminals, and a first variable attenuation circuit connected between at least one of the pair of input terminals and the pair of output terminals of the differential amplifier circuit and capable of switching a resistance value on the basis of a control signal which is input from the outside.
An oxide superconducting wire includes: a substrate having a main surface; a superconducting layer disposed above the substrate and formed of a rare-earth high-temperature superconductor; and a protective layer disposed on the superconducting layer and in contact with the superconducting layer. An a-axis direction is oriented perpendicular to the main surface of the substrate. The superconducting layer includes a-axis oriented grains oriented along the a-axis direction. An a-axis oriented grain ratio is defined as a proportion of the a-axis oriented grains to an entirety of crystal grains forming the superconducting layer. The a-axis oriented grain ratio is greater than or equal to 4.1% and less than or equal to 11.9%.
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
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
70.
FERRULE FOR OPTICAL CONNECTOR AND METHOD OF MANUFACTURING OPTICAL CONNECTOR
A ferrule, for an optical connector, includes: a main body part formed with a fiber hole configured to accommodate insertion of an optical fiber. The main body part is formed of a material having a coefficient of linear expansion within a range of 1.7×10−5 to 3.0×10−5. A ratio of an inner diameter dh of the fiber hole to an outer diameter df of a cladding of the optical fiber is within a range of 99.632 [%]≤dh/df≤99.880 [%].
A multi-core optical fiber preform includes: a rod-shaped main cladding body having one or more main inner holes; main core rods inserted into the one or more main inner holes; and a tip continuously-installed portion disposed at one end of the rod-shaped main cladding body and including a glass rod having no core rod or having one core rod.
A light diffraction element unit includes an optically-transparent substrate; a light diffraction element disposed on a main surface of the optically-transparent substrate; and a three-dimensional alignment mark disposed on the main surface in a vicinity of the light diffraction element and having a thickness greater than a thickness of the light diffraction element.
An optical transceiver includes a case including a heat sink, one or more heat generating bodies disposed in the case, one or more heat conducting portions protruding from an inner wall surface of the case and thermally contacting the one or more heat generating bodies, and a heat pipe that transfers heat from the one or more heat conducting portions to the heat sink.
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
H04B 10/40 - Systèmes de transmission utilisant des ondes électromagnétiques autres que les ondes hertziennes, p.ex. les infrarouges, la lumière visible ou ultraviolette, ou utilisant des radiations corpusculaires, p.ex. les communications quantiques Émetteurs-récepteurs
A heat pipe includes a flat container having an internal space in which a working fluid is sealed and a flat surface facing the internal space, and a wick disposed in the internal space. The wick includes a first wick having a plurality of first voids and a second wick having a plurality of second voids. The first wick rises from the flat surface and is fixed to the flat surface. The second wick is formed of a sintered body of powders and covers a surface of the first wick. Each of the plurality of second voids is smaller on average than each of the plurality of first voids.
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
A housing unit includes: a linear material; and a housing body that houses the linear material. In the housing body, winding regions in which the linear material is wound are disposed in a circumferential direction. The linear material is wound in a figure eight in a first region pair constituted by a pair of the winding regions. The linear material is wound in a figure eight in a second region pair constituted by a pair of the winding regions that are different from the winding regions constituting the first region pair.
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
76.
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.
An optical input/output device includes: one or more multicore fibers each comprising one or more transmitting cores and one or more receiving cores; first transmitting single-core fibers whose number is equal to a total number of the transmitting cores; first receiving single-core fibers whose number is equal to a total number of the receiving cores in all the multicore fibers; a fan-in/fan-out device that optically couples each core of the first transmitting single-core fibers and each of the transmitting cores at one end of a respective one of the first transmitting single-core fibers, and optically couples each of the first receiving single-core fibers and each of the receiving cores at one end of a respective one of the first receiving single-core fibers; and a transmission/reception connector comprising connector ports whose number is equal to a total number of the first transmitting single-core fibers and the first receiving single-core fibers.
An optical computing device includes: an optical modulation element including cells with independently configurable amounts of modulation; and a reflector. The optical modulation element is configured with N (N is a natural number not less than 2)-computing regions A1, A2, . . . , AN. The computing region A1 performs optical computing by modulating and reflecting incident light. Each computing region Ai (i is a corresponding natural number not less than 2 and not more than N) other than the computing region A1 performs the optical computing by modulating and reflecting signal light that has been modulated and reflected by a computing region Ai−1 and then reflected by the reflector.
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
79.
OPTICAL COMPUTING DEVICE AND OPTICAL COMPUTING METHOD
An optical computing device includes a filter, through which light passes, and an optical diffraction element group that performs optical computing. The optical diffraction element group includes one or more optical diffraction elements having microcells, each of the microcells having an independently set thickness or a refractive index. After passing through the filter, the light first enters a first optical diffraction element among the one or more optical diffraction elements. The filter selectively transmits light in a direction that has an angle, with respect to an optical axis of the first optical diffraction element, that is less than or equal to a specific angle determined by the filter.
A laser module includes: a first laser diode that emits a first light beam having a first wavelength; a second laser diode that emits a second light beam having a second wavelength different from the first wavelength; a fast-axis collimating lens disposed corresponding to each of the first and second laser diodes to collimate a fast-axis direction of each of the first and second light beams emitted from each of the first and second laser diodes; a slow-axis collimating lens disposed corresponding to each of the first and second laser diodes to collimate a slow-axis direction of each of the first and second light beams emitted from each of the first and second laser diodes; and a wavelength combining element including a volume Bragg grating (VBG) or a diffraction grating.
H01S 5/40 - Agencement de plusieurs lasers à semi-conducteurs, non prévu dans les groupes
H01S 5/02253 - Découplage de lumière utilisant des lentilles
H01S 5/02251 - Découplage de lumière utilisant des fibres optiques
H01S 5/02326 - Dispositions pour le positionnement relatif des diodes laser et des composants optiques, p.ex. rainures dans le support pour fixer des fibres optiques ou des lentilles
81.
OPTICAL FIBER WIRE, AND METHOD FOR PRODUCING OPTICAL FIBER RIBBON
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
An optical device includes a first fiber including a first reflector, a second fiber including a second reflector, and an amplifying fiber that has a normalized frequency that is greater than or equal to 5.13 and is wound so as not to intersect on one plane. The amplifying fiber includes an outer section wound in a circular manner. The amplifying fiber includes an inner section having first arc portions and wound such that at least two of the first arc portions have a radius of curvature in which a higher-order mode that is higher than an LP11 mode has loss. The amplifying fiber includes a first end connected to the first fiber and disposed on an inside of the amplifying fiber. The amplifying fiber includes a second end connected to the second fiber.
A jig for a fusion splicer mountable on a heater of the fusion splicer includes: a plate part configured to face a heating part of the heater; a first retainer, configured to face a first clamp of the fusion splicer that is disposed outside of the heating part along a longitudinal direction of an object to be heated, and further configured to retain a first member extending from a first end of the object along the longitudinal direction; and a second retainer, configured to face a second clamp disposed on a side of the heating part opposite to the first clamp along the longitudinal direction, and further configured to retain a second member extending from a second end of the object along the longitudinal direction.
A cap attachable to an optical connector including a ferrule and a housing that slidably houses the ferrule, includes: a body part configured to attach to the optical connector and configured to cover a connecting end face of the ferrule projecting from the housing and a side surface of the ferrule projecting from the housing; a housing contact part configured to contact the housing inside the body part; and a ferrule contact part configured to contact the side surface of the ferrule in a state where the housing contact part is in contact with the housing.
An accommodation unit includes: a casing that: stores trays each storing an optical fiber, and includes an insertion opening into which the trays are inserted to be arranged in an up-down direction; and support members disposed in the casing, each of the support members slidably supporting a lower part of each of the trays, and each of the support members including: a pair of arm parts disposed apart from each other in a left-right direction orthogonal to a slide direction of the trays and the up-down direction; and a projection that is disposed on each of the arm parts in a vicinity of the insertion opening, and contacts an upper part of each of the trays under each of the support members.
An optical wiring unit includes: a tray that includes a bottom plate; and a lid body that includes a top plate facing the bottom plate in an up-down direction. An accommodating space that accommodates an optical fiber is formed between the bottom plate and the top plate. one of the tray and the lid body includes: an outer wall portion; and an inner wall portion inside the accommodating space with respect to the outer wall portion. The other of the tray and the lid body includes an intermediate wall portion inserted between the outer wall portion and the inner wall portion. The inner wall portion has a dimension in the up-down direction smaller than that of the outer wall portion.
An optical connector includes: a ferrule that holds an end part of a fiber; and a holding member including: a holding part that slidably holds the ferrule; a fixing part through which the fiber extending from the ferrule is inserted and to which a sleeve for protecting a fusion splice point between the fiber and an optical fiber is fixed; and a housing part that houses the fiber between the holding part and the fixing part when the fiber is bent and the ferrule moves rearward of the housing part.
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).
An optical fiber fusion splicer includes: a replaceable groove-formed unit having first positioning grooves, separated from each other by an equal distance, on which first optical fibers are disposed, and second positioning grooves, separated from each other by an equal distance, on which second optical fibers are disposed, wherein the first optical fibers constitute a first mass fiber and have first glass parts, and the second optical fibers constitute a second mass fiber and have second glass parts; a lighting part that illuminates, with light, the first optical fibers and the second optical fibers; a lens that condenses the light passing through the first glass parts and the second glass parts; a camera that captures an image formed by the lens; and a pair of discharge electrodes that heat and melt, by electric discharge, the first glass parts and the second glass parts.
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 connector includes: a ferrule that includes a connection end surface, and a fiber hole into which an optical fiber is configured to be inserted up to the connection end surface; a spring that is disposed on a rear side of the ferrule that is opposite to a front side that is a side on which the connection end surface is disposed in a longitudinal direction of the fiber hole; a spring push that sandwiches the spring with the ferrule and through which the optical fiber is inserted in the longitudinal direction; and a housing that accommodates the ferrule and the spring and that is engaged with the spring push such that the ferrule is biased to the front side by the spring. The optical fiber is configured to be inserted into and removed from the spring push.
A pressure sensitive sensor includes: a first substrate; a resistor disposed on the first substrate; a first wiring pattern disposed on the first substrate and connected to the resistor; first comb tooth patterns disposed on the first substrate and connected to the resistor; a pusher includes a pushing part and a connecting body electrically connected to the first comb tooth patterns by pushing of the pushing part; and a second wiring pattern disposed on the first substrate and electrically connected to the connecting body by pushing of the pushing part. A material of the resistor has an electrical resistivity higher than electrical resistivities of materials of the first wiring pattern, the first comb tooth patterns, the connecting body, and the second wiring pattern. The resistor does not overlap the connecting body in a plan view.
G01L 1/22 - 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 en utilisant des jauges de contrainte à résistance
100.
OPTICAL FIBER CABLE AND PRODUCTION METHOD FOR OPTICAL FIBER CABLE
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).
