Abstract: An optical structure includes a substrate including a cavity on a first surface of the substrate, an optical component on the substrate and an adhesive applied to a side of the optical component to fix the optical component to the substrate. The optical component includes a recess on a second surface of the optical component, the second surface is opposed to the first surface of the substrate, and the recess is provided along an edge of the second surface.

Abstract: An optical fiber cord includes: a multi-fiber cord section that includes an outer cover that encloses an optical fiber unit where a plurality of coated optical fibers are gathered; a plurality of branch cord sections where the coated optical fibers are housed in branch tubes; and a branch protection section that includes an exterior member that covers a branch portion where the plurality of coated optical fibers are branched from the multi-fiber cord section toward the branch cord sections.

Abstract: An optical fiber pathway duct comprises a first channel configured to receive a pulling mechanism, and a second channel configured to allow one of a pullable connector and a stub end coupled to an optical fiber cable to pass through the optical pathway duct. The optical fiber pathway duct further comprises a slot disposed between the first channel and the second channel and configured to allow a pulling eye of one of the pullable connector and the stub end coupled to the pulling mechanism to pass through the optical pathway duct.

Abstract: An optical waveguide device comprising: one or more photonic chips, the one or more photonic chips including: a first portion of a photonic chip comprising an array of first components, each of the first components having an optical input and an electrical output; and a second portion of a photonic chip comprising an array of second components, each of the second components configured to receive an electrical input; the optical waveguide device further comprising: an integrated circuit; the integrated circuit forming an electrical bridge between the electrical outputs of the first components and respective electrical inputs of the second components; wherein the integrated circuit is directly mounted onto the one or more photonic chips; and/or wherein the integrated circuit is located between the first portion of a photonic chip and the second portion of a photonic chip.

Abstract: A behind-the-wall optical connector an outer housing configured to be inserted into an adapter with a corresponding inner surface, a ferrule included in an annular collar to mate with a corresponding projection at an adapter opening, and a latch attached to one side of housing configured to lock the connecter into an adapter opening. The latch is further configured with a locking channel and guide to accept a pull tab with a catch at one end, the pull tab releases the connector from the adapter opening when the tab is pulled rearward or away from the adapter.

Abstract: A mode converter provided in the present invention includes an input multimode waveguide, an output multimode waveguide, and a first conversion waveguide, where the input multimode waveguide is configured to receive a first signal which mode is a first mode; the first conversion waveguide has an input coupling waveguide with a first effective refractive index, and has an output coupling waveguide with a second effective refractive index; the first conversion waveguide is configured to perform, by using the input coupling waveguide, evanescent wave coupling on the first signal that is in the first mode and that is transmitted in the input multimode waveguide, and couple the first signal to the second mode of the output multimode waveguide by using the output coupling waveguide, so as to obtain the first signal in the second mode; and the output multimode waveguide is configured to output the first signal in the second mode.

Abstract: A light emitting element array includes plural semiconductor stacking structures and a light screening portion. The plural semiconductor stacking structures each include a light emitting portion and a light receiving portion that receives light propagated in a lateral direction via a semiconductor layer from the light emitting portion. The light screening portion is provided between the plural semiconductor stacking structures to screen light directed from the light emitting portion of one of the semiconductor stacking structures to the light receiving portion of another semiconductor stacking structure.

Abstract: An optical transmission module includes a substrate having an opening portion; an optical element closing an opening on the lower surface side of the substrate and converting an electric signal into an optical signal or the optical signal into the electric signal; an optical fiber transmitting the optical signal; a ferrule closing an opening on the upper surface side of the substrate and having an optical fiber insertion hole; and a resin filled into a space surrounded at least by the substrate, the optical element, the ferrule, and a distal end of the optical fiber, wherein the ferrule has a resin filling hole spaced apart from the optical fiber insertion hole to fill the space with the resin, and an angle formed by an axis of the optical fiber insertion hole and an axis of the resin filling hole is equal to or more than 0° and less than 90°.

Abstract: A method of manufacturing a monolithic array of lenslets that inject light into waveguides without the need for alignment of a separate lenslet array and waveguide array is provided. The waveguide array may be incorporated as a monolithic or fused piece with the substrate on which the lenslet array is to be written. A method of producing a flat, thin monolithic collimator array having a form corresponding to that of a PIC, with the input/output lenslet array located on the top surface of the collimator array is provided. A method for bonding a two-dimensional (2-D) array of lenslets on top of a photonic integrated circuit (PIC) substrate with a small gap for thermal expansion between lenslet blocks is provided.

Abstract: A fiber optic cassette includes structural features that maintain segregation between incoming and outgoing optical fibers. A dividing wall and a set of splice holders within the cassette together define two separate chambers within the cassette. Cable entry openings on the rear end of the cassette are configured to receive fiber optic cables into the rear chamber defined by the dividing wall and the splice holders. The front chamber is configured to hold patching fibers that interface with fiber optic adapters on the front of the cassette. The patching fibers and incoming optical fibers can be spliced as needed, and the splices held in place by the splice holders. This arrangement ensures that the incoming optical fibers from the fiber optic cable and the patching fibers remain segregated, such that the splice points are the only points of contact between the two sets of fibers.

Abstract: The present invention relates to the field of single-mode optical fibers and discloses a bending-insensitive, radiation-resistant single-mode optical fiber, sequentially including from inside to outside: a core, inner claddings, and an outer cladding, all made from a quartz material. The inner claddings comprise, from inside to outside, a first fluorine-doped inner cladding and a second fluorine-doped inner cladding. The core and the first fluorine-doped inner cladding are not doped with germanium. The respective concentrations of other metal impurities and phosphorus are less than 0.1 ppm. By mass percent, the core has a fluorine dopant content of 0-0.45% and a chlorine content of 0.01-0.10%; the first fluorine-doped inner cladding has a fluorine concentration of 1.00-1.55%; and the second fluorine-doped inner cladding has a fluorine concentration of 3.03-5.00%.

Abstract: The present disclosure discloses a photonic chip. The photonic chip receives a first optical signal and a second optical signal with different wavelengths from two optical sources, respectively. The photonic chip includes a polarization multiplexing element (PME). The PME receives the first and the second optical signals from the first and the second optical sources respectively and combines the first and the second optical signals into a single optical path. The PME polarizes the first optical signal to have a different polarization than the second optical signal and transmits the combined first and the second optical signals in a common waveguide.

Abstract: A fiber optic pulling grip assembly includes a front grip unit to grip a front end of a mesh of a fiber optic cable, and a rear grip unit to grip a rear end of the mesh. The rear grip includes a sleeve member and a tubular fastener. The sleeve member has an anti-slip portion that has protrusions to increase friction between the anti-slip portion and a rear end of the mesh. The tubular fastener is sleeved around the sleeve member. A cable entry hole of the tubular fastener allows insertion of the fiber optic cable into the sleeve member. The anti-slip portion and the tubular fastener cooperate to clamp therebetween the rear end of the mesh.

Abstract: An expandable optical distribution device is provided which includes a basic module defined by a basic box, closed by a front cover, receiving an optical cable and housing an optical fiber derived from the optical cable and coupled to an output adapter to which a user's drop cable of a first user is coupled; and an additional carton-shaped expansion module in the form of an additional box, engageable on the basic box and closed by a tilting cover. The additional box is provided with an input connector attachable to the output adapter, and houses an expansion fiber split into multiple user fibers, each user fiber being coupled to an expansion adapter internal to the additional box and to each of which a user's drop cable is attachable.

Abstract: Connector assemblies having an adjustable polarity are described. A connector assembly comprises a frame comprising a single housing having top and bottom frame components, first and second plug frames located within the housing, a first ferrule located in the first plug frame, a second ferrule located in the second plug frame, and a latch component attached to the top or bottom frame component, the latch component having at least one compression element. The latch component is configured to rotate around the housing when the at least one compression element is compressed to change the polarity of the connector assembly from a first polarity when the latch component is located at a first polarity position to a second polarity when the latch component is located at a second polarity position.

Abstract: An enclosure for splicing a trunk line from outside a building to inside the building comprises a housing, a removable frame, and a splice tray. The housing includes a back and a sidewall comprising a wall portion and a gap. The removable frame is removably coupled to the back of the housing and comprises an adaptor plate, a splice tray coupler, and a wall. The wall of the removable frame fills in the gap of the sidewall of the housing. Further, the splice tray couples to the removable frame via the splice tray coupler of the removable frame.

Abstract: In a multi-panel display device in which plural individual display devices are joined, it is possible to guarantee image continuity in panel junction areas of the multi-panel display device by disposing a frame-type optical member, which includes a frame section having plural optical fibers and a central light-transmitting area, on the front surface of the multi-panel display device and optimizing structures of an inner inclined surface of the frame section of the frame-type optical member and optical fibers included in the frame section.

Abstract: A terminal for making a hydraulic, electrical, or optical connection in an ink jet printing machine. The terminal extends along an axis XX?, and its external surface includes: a cylindrical portion, including a contact end and having a first diameter (d1), this end being provided with hydraulic or electrical or optical connection structure. The external surface also includes a collar, having a diameter (d2) higher than the first diameter (d1), and a throat, the bottom of which has a cross-section, in a plane perpendicular to the axis XX?, having at least one arc of circle portion having a third diameter (d3) lower than that of the collar, at least one planar part, and a part of this cross-section having a width lower than the third diameter. The throat continues with a connection device, for connecting to at least one hydraulic conduit or one electrical cable or one optical fiber.

Abstract: A rack-level breakout box, system, and method for distributing high-fiber count optical fiber cables to one or more network racks. External routing of incoming and outgoing cables around the rack is kept neat and orderly, with one large cable serving a fully populated rack and, optionally, multiple racks. A flexible mounting configuration is further provided.

Abstract: An optical module includes a housing, a printed circuit board, an optical assembly, an optical interface joined with the optical assembly, the printed circuit board, the optical assembly, and the optical interface being disposed in the housing, an adapter to be mated with an external optical connector and disposed on an end of the housing, and first and second connecting part disposed on the adapter and the housing, respectively. The adapter and the housing are secured together through the first and second connecting parts. The optical interface and the adapter are configured to correspond to each other.