Abstract: An optical transceiver includes an input assembly, an output port, a fiber patch panel, multiple first optical fibers and multiple second optical fibers. The input assembly is arranged on a circuit board and has a first input port and a second input port. The fiber patch panel is arranged between the input assembly and the output port, and has multiple first fiber patch slots and multiple second fiber patch slots. The first optical fibers are connected to the first input port and the output port. The first optical fiber passes through the first fiber patch slot and the second fiber patch slot. The second optical fibers are connected to the second input port and the output port. The second optical fiber passes through the first fiber patch slot and the second fiber patch slot. The second fiber patch slot accommodates the first optical fiber and the second optical fiber.

Abstract: An optical fiber transducer usable in environments of extreme operating temperature features a stationary support, a movable body displaceable back and forth relative thereto, and an optical fiber connected between the support and the movable body. The fiber has a Fiber Bragg Grating in an intermediate region thereof between the support and movable body. To accommodate varying coefficients of thermal expansion (CTEs) among these components, one or more tubes close circumferentially around the fiber. Each tube has a CTE that is greater than that of the fiber, and less than that of the constituent material of the support and movable body. The fiber is bonded to an interior of the tube(s), while an exterior of the tube(s) is bonded to the support and movable body.

Abstract: The present invention relates of a photonic integrated and a method of fabricating a photonic integrated chip, PIC, configured for alignment and attachment of a laser diode in a predetermined position in which light from the laser diode is aligned with an input of the PIC; wherein the photonic chip comprises an asymmetric alignment assembly for receiving and aligning the laser diode in the predetermined position; and wherein the input comprises a coupler for receiving a laser beam from the laser diode in use.

Abstract: The present disclosure provides a semiconductor device, a photonic circuit, and a method for adjusting a resonant wavelength of an optical modulator. The semiconductor device includes a substrate, a first waveguide disposed on the substrate, and a second waveguide disposed on the substrate and spaced apart from the first waveguide with a first distance. In addition, the second waveguide includes a first electrical coupling portion having a first type doping, a second electrical coupling portion having a second type doping, and an optical coupling portion disposed between the first electrical coupling portion and the second electrical coupling portion, wherein the second waveguide is configured to receive a first voltage through the first electrical coupling portion and the second electrical coupling portion to decrease a resonant wavelength of the second waveguide.

Abstract: A cassette configured for the installation in a fiber enclosure system. The cassette includes a base, a first wall including a first front post, a second wall including a second front post, and a front wall with an opening including an adapter configured to connect to at least one fiber optic cable. The cassette further includes a latch located on the first wall configured to releasably connect the cassette to the fiber enclosure system, where a cassette lock is configured to retract the latch when the lock is actuated away from a rear of the cassette and deploy the latch when the lock is actuated toward the rear of the cassette.

Abstract: The present disclosure relates to optical phase modulation devices. The optical phase modulation devices may include a heater resistance which induces a phase change and control systems and methods of controlling the induced phase change.

Abstract: A semiconductor Mach-Zehnder optical modulator includes input side lead-out lines, phase modulation electrode lines, output side lead-out lines, electrodes that apply modulation signals propagating through the phase modulation electrode lines to respective waveguides, and ground lines. Furthermore, at least one n-type semiconductor layer or p-type semiconductor layer is formed between a substrate and a dielectric layer in a lower layer under the output side lead-out lines intermittently along the output side lead-out lines.

Abstract: The present disclosure intends to facilitate tearing a metal sheath even in a case where the metal sheath is incorporated in an optical fiber cable. The optical fiber cable of the present disclosure includes a cable core arranged at a central portion and accommodating a plurality of optical fibers gathered together, an inner layer sheath arranged on an outer circumference of the cable core and sheathing the cable core, a metal sheath arranged on an outer circumference of the inner layer sheath and wound around the inner layer sheath, an outer layer sheath arranged on an outer circumference of the metal sheath and sheathing the metal sheath, and at least one outer sheath tearing string arranged in a longitudinal direction inside the metal sheath.

Abstract: A method of wrapping optical fiber around a fluid conduit. The optical fiber is wrapped at least partially around the conduit. The optical fiber is secured relative to the conduit at one or more securing locations, thereby defining a sequence of multiple optical fiber portions. Each optical fiber portion comprises a portion of the optical fiber. Each securing location delimits a given optical fiber portion from the subsequent optical fiber portion in the sequence of optical fiber portions. A direction of wrapping of each consecutive optical fiber portion in the sequence of optical fiber portions may be alternated between a clockwise direction and a counter-clockwise direction.

Abstract: Fiber optic connectors, cable assemblies and methods for making the same are disclosed. In one embodiment, the optical connector comprises a housing and a ferrule. The housing comprises a longitudinal passageway between a rear end and a front end. The optical connectors disclosed may be tunable for improving optical performance and may also include a spring for biasing the ferrule to a forward position as desired.

Abstract: The present disclosure relates to a connector assembly and a corresponding method to reverse polarity of the connector. The method enables polarity reversal without bending/twisting optical fibers within the connector assembly.

Abstract: A light coupling unit includes a first major surface comprising one or more substantially parallel first grooves oriented along a first direction for receiving one or more optical waveguides. A second major surface for slidably contacting a mating light coupling unit comprises an optically transmitting window for propagating an optical signal therethrough, and a region of second grooves and lands configured to capture particulate contaminants in the second grooves.

Abstract: An attachment tool has a plurality of insertion holes. An optical adapter is fitted into each of the insertion holes. At this time, a holding structure for the optical adapter and the attachment tool has a swaying mechanism that allows the optical adapter to sway against the attachment tool. When a force greater than a prescribed strength is applied to any one of the optical adapters, the swaying mechanism allows the optical adapter to sway in a direction in which the optical adapters are provided side by side. When the force is offloaded, the swaying mechanism can hold the optical adapter in a direction substantially vertical to the attachment tool.

Abstract: A telecommunications chassis comprises a cable sealing portion defining at least one cable opening configured to sealably receive a cable and a module mounting portion extending from the cable sealing portion, which further comprises a housing defining an open front closable by a door to define an interior, a rear wall, a right wall, and a left wall. A plurality of module mounting locations is provided in a vertically stacked arrangement, each configured to receive a telecommunications module through the open front. An exterior of the housing includes a first column of radius limiters defining curved profiles for guiding cables from the front toward the rear with bend control. A second column of radius limiters in the form of spools is spaced apart and generally parallel to the first column of radius limiters and a third column of radius limiters, at least some of which are in the form of spools, is also spaced apart and generally parallel to the first and second columns of radius limiters.

Abstract: A ferrule according to an embodiment is a ferrule of an optical connector to which a counterpart connector is connected. The ferrule includes an end portion having an optical fiber retention hole and a guide hole opened, the optical fiber retention hole into and on which a fiber is inserted and retained, the guide hole into which a guide pin is inserted, the guide pin establishing positioning to the counterpart connector. The end portion includes an optical surface including an opening of the optical fiber retention hole, a guide hole exposure surface including an opening of the guide hole, and a step part formed between the optical surface and the guide hole exposure surface.

Abstract: An indexing terminal arrangement includes a terminal housing that receives an input cable; an optical power splitter disposed within the interior of the terminal housing; a first multi-fiber optical adapter coupled to the terminal housing; a first single-fiber optical adapter coupled to the terminal housing; and a pass-through multi-fiber optical adapter coupled to the terminal housing. Split optical signals are provided to the first multi-fiber optical adapter and the first single-fiber optical adapter. Unsplit and indexed optical signals are provided to the pass-through optical adapter.

Abstract: A sealing unit for a cabinet containing optical components. A gasket defines a plurality of apertures configured to provide a seal around a plurality of optical fiber cables, wherein the gasket has an interior side intended to face the interior of the cabinet and an exterior side intended to face an exterior of the cabinet. A first retaining device is located on the interior side of the gasket, and a second retaining device is located on the exterior side of the gasket. The first and second retaining devices each include a plurality of channels, wherein each channel is aligned with a respective aperture of the gasket and each channel is configured to receive one of the plurality of optical fiber cables. Each channel has a profile defined by a plurality of protruding surfaces configured to restrain longitudinal movement of an optical fiber cable received therein.

Abstract: The optical receptacle, which is disposed between one or more vertical resonator surface emitting lasers arranged on a substrate and one or more optical transmission bodies to optically couple the vertical resonator surface emitting lasers and end surfaces of the optical transmission bodies, has: a first optical surface on which light emitted from the vertical resonator surface emitting lasers is incident; and a second optical surface for emitting light, which enters the first optical surface and passes through the inside thereof, toward the end surfaces of the optical transmission bodies. The first optical surface is disposed such that a central axis of the first optical surface is inclined with respect to an optical axis of the vertical resonator surface emitting laser or the central axis and the optical axis are parallel to and do not coincide with each other.

Abstract: Fiber optic connectors comprising multiple footprints along with cable assemblies and methods for making the same are disclosed. In one embodiment, the optical connector comprises a housing and a ferrule. The housing comprises a longitudinal passageway between a rear end and a front end. The fiber optic connector may be converted from a first footprint to a second footprint by a conversion housing that fits about a portion of the housing. The optical connectors disclosed may be tunable for improving optical performance and may also include a spring for biasing the ferrule to a forward position as desired.

Abstract: A multi-chip photonic assembly includes first and second photonic integrated circuits having first and second waveguides vertically stacked such that first vertical dimensions of the first and second waveguides occupy different horizontal planes in the stack. At least one of the first and second waveguides has a region that has a second vertical dimension that is larger than the first vertical dimension and either horizontally overlaps the other waveguide and/or vertically contacts the other waveguide. Light moving through one of the waveguides from the first vertical dimension to the other vertical dimension changes modes vertically so that the light moves from one waveguide to the other.