Abstract: Driving an optical modulator is described. A control circuit generates first and second target voltages based on a target phase modulation between first and second optical waveguide arms of the optical modulator. An offset control circuit generates first and second offset signals. A linear modulator driver receives the first and second target voltages and the first and second offset signals, and generates a first output voltage for biasing the first optical waveguide arm and a second output voltage for biasing the second optical waveguide arm. Feedback circuitry can feed the first and second output voltages to the offset control circuit, which can generate the first and second offset signals using the first and second output voltages. The output voltages bias the waveguide arms so the optical modulator operates close to the target phase modulation, even in the presence of manufacturing errors.

Abstract: A multi-cable terminal including a plurality of sub-structures, each of the sub-structures defining a sub-enclosure and being openable independent of the other sub-structures to provide access to the sub-enclosure, and a frame that secures the plurality of sub-structures such that the frame and sub-structures define a main enclosure. Each of the sub-enclosures is configured to accommodate a multiple of cable connection elements such that a watertight seal is created around the cable connection elements when the corresponding sub-structure is closed.

Abstract: An optical connection structure includes a waveguide substrate; a Si waveguide formed on one surface of the waveguide substrate 100 and having a first end surface; an optical fiber having a second end surface facing the first end surface; a terrace section extending further toward the optical fiber side from an end portion on the optical fiber side of the waveguide substrate; and a support member formed on the terrace section, and including, on a top surface in a view from the terrace section, a recess c configured to support a lens.

Abstract: Described herein are techniques for yield enhancement in photonic communications platforms. A photonic communication platform may include a photonic substrate patterned with a plurality of photonic modules including at least first and second photonic modules, wherein the first and second photonic modules are copies of a common template photonic module. Yield enhancement may be accomplished using photonic redundancy and/or electronic redundancy. Photonic redundancy may involve redundant optical lanes provided in parallel to primary optical lanes. Electronic redundancy may involve use of additional electronic circuits or wires running in parallel to electronic circuits or wires. Defective circuits may be disabled to prevent negative impacts on other parts of the electronic system. This can be done by providing power-isolating switches that completely disable and isolate the defective circuits.

Abstract: A windowless multi-fiber ferrule including a ferrule body. The ferrule body includes a plurality of outer slots. The ferrule body defines an inner passage that extends through a length of the ferrule body from a front end to a rear end. The inner passage includes a main chamber and a row of parallel fiber bores. The ferrule body includes a first and a second major side which each define a plurality of slots. The ferrule body includes ferrule walls which are located between the main chamber and the major sides. The ferrule walls have a first thickness at the outer slots and a second thickness at the regions between the outer slots which is thicker than the first thickness. The main chamber includes sink locations adjacent the regions between the outer slots.

Abstract: Optical cable assemblies having filler optical fibers and methods of fabricating the same are disclosed. In one embodiment, an optical cable assembly includes an optical cable, a plurality of filler optical fibers, and a ferrule. The optical cable includes an outer jacket and a plurality of active optical fibers disposed within the outer jacket, wherein the plurality of active optical fibers extend beyond an end of the outer jacket. Each filler optical fiber includes a first end and second end. The first end is secured to an outer surface of the outer jacket by a securing member for improving mechanical performance of the assembly. The ferrule includes an array of openings. Ends of the plurality of active optical fibers are disposed within a first subset of openings of the array of openings and the second ends of the plurality of filler optical fibers are disposed within a second subset of openings of the array of openings and are suitable for transmitting optical signals.

Abstract: The present disclosure relates to sealing arrangements for sealing locations where cables enter/exit enclosures. The sealing arrangements can include first and second cable sealing modules each including a cable sealing surface. The cable sealing surfaces of the first and second cable sealing modules oppose and contact one another at a cable pass-through sealing interface. The sealing arrangements can be adapted to enhance cable diameter range-taking, sealant conformability, and/or sealant recovery from deformation.

Abstract: A fiber optic connector has at least two optical fibers therein have end faces that are positioned such that they are directed in different directions. The end faces can be oriented relative to a key that is provided on a fiber optic connector housing that has a central opening in the main body of the fiber optic connector.

Abstract: An optical cable is provided in which an optical fiber bundle with clustered or bundled optical fibers is accommodated in a tubular member and the optical fibers are formed in an excess group length (EGL) by modeling considering bending properties of the optical cable or a lossless bending radius of the optical fibers of the optical fiber bundle, thereby minimizing stress, damage or optical loss of the optical fibers in the optical fiber bundle.

Abstract: A butt closure base includes a base housing defining a plurality of cavities. A first gel is disposed in each of the plurality of cavities. The butt closure base further includes a plurality of wedge assemblies, each of the plurality of wedge assemblies removably insertable into one of the plurality of cavities. Each of the plurality of wedge assemblies includes an outer cover, and a second gel. The butt closure base further includes a plurality of cable entry passages, each of the plurality of cable entry passages defined between one of the plurality of cavities and one of the plurality of wedge assemblies. The butt closure base further includes a plurality of bushings, each of the plurality of bushings disposed in one of the plurality of cable entry passages.

Abstract: A tool is used for inserting and removing an MT-type fiber optic ferrule from an adapter. The tool includes a handle having one or both of an insertion portion and a removal portion. An insertion head is movably coupled to the insertion portion of the handle. A removal head is movably coupled to the removal portion of the handle. The handle has opposing ends for the insertion portion and the removal portion. The handle may have other configurations. A sliding lock may be used to lock the rotatable insertion portion and rotatable removal portion in a fixed position relative to the handle.

Abstract: Embodiments of the disclosure relate to an optical fiber cable. The optical fiber cable includes a cable jacket having a first inner surface and a first outer surface. The first inner surface defines a central bore along a longitudinal axis of the optical fiber cable. The optical fiber cable also includes optical fibers disposed within the central bore and a buffer tube surrounding the optical fibers. The buffer tube has a second inner surface and a second outer surface. The optical fiber cable also includes an armor layer disposed between the first inner surface of the cable jacket and the second outer surface of the buffer tube and a water-blocking adhesive disposed between the armor layer and the first outer surface of the buffer tube. The water-blocking adhesive extends along the longitudinal axis of the optical fiber cable and around a circumference of the buffer tube.

Abstract: An SFO-box (1) suitable to receive at least one optical fan out module (6). The SFO-box (1) includes a housing (2) with a base (3) and a top (4) which in an assembled position encompass a mounting space (5) suitable to receive the at least one optical fan out module (6) therein. The top (4) includes first fastening means (7) and the base (3) comprises second fastening means (8) which from their layout are compatible to each other such that two assembled housings (2) can be attached to each other in a stackable manner by interconnecting the first fastening means (7) of the top (4) and the second fastening means (8) of the base (3).

Abstract: A fiber optic closure including a receptacle, a bracket assembly, and an adapter is provided. The receptacle includes an interior formed between a plurality of sidewalls, a base wall, and an end wall. The bracket assembly extends along a transverse axis and includes a main body and a plurality of hinge assemblies. The plurality of hinge assemblies is spaced apart in a linear array along the transverse axis. The adapter is connectable to the receptacle and the bracket assembly and includes a pair of pivot arms connectable to the bracket assembly. The pair of pivot arms extends along the longitudinal axis from a lateral wall extending along the lateral axis. The lateral wall is attachable to the receptacle via a pair of arms extending along the longitudinal axis from the lateral wall.

Abstract: Structures for an edge coupler and methods of fabricating such structures. The structure includes a substrate, a first waveguide core, and a second waveguide core positioned in a vertical direction between the first waveguide core and the substrate. The second waveguide core includes a taper and an inverse taper longitudinally positioned adjacent to the taper.

Abstract: A behind-the-wall optical connector having an outer housing configured to be inserted into an adapter with a corresponding inner surface, and a latch is attached to at least one side of housing configured to lock the connecter into an adapter opening. A backbody, an integrated backbody or an external clip retains the ferrule assembly with a ferrule, biased forward toward a proximal end of the connector housing.

Abstract: Ferrules, alignment frames and connectors having at least one flexing element are provided. A ferrule or an alignment frame may include a body and first and second flexible arms, and a connector may include the ferrule or the alignment frame. A ferrule may have a first flexible arm that has a first fixed end attached to a first side of the body of the ferrule and an opposite first free end, and may have a second flexible arm having a second fixed end attached to a second side of the body, opposite the first side, and an opposite second free end. When the ferrule is mated with a mating ferrule, the first and second flexible arms are flexed away from the respective first and second sides of the body, and the first and second free ends contact the mating ferrule.

Abstract: A device may provide, to a user device, a first message instructing a technician to move fiber cables and may receive a first signal based on the technician moving the fiber cables and a rest signal based on the technician stopping movement of the fiber cables. The device may calculate a distance, an average peak signal, and a baseline signal based on the first signal and the rest signal and may calculate a data collection window based on the distance, the average peak signal, and the baseline signal. The device may provide, to the user device, a second message instructing the technician to move one fiber cable at a time and may receive second signals based on the technician moving one fiber cable at a time. The device may provide, for display to the user device, the data collection window and indications of the second signals.

Abstract: A port tracer including a housing, a light guiding tunnel, and a light guide cover. The housing has a first side and a second side opposite to each other and a third side connected to the first side and the second side. A first opening and a second opening are located on the first side and the second side respectively. The light guiding tunnel is disposed inside the housing. The light guiding tunnel has a first light entrance-exit and a second entrance-exit that face the first side and the second side respectively. The light guide cover is detachably connected to the first opening. The light guide cover covers the first light entrance-exit. The third side has a third opening. A part of the light guide cover is located inside the housing and opposite to the third opening.

Abstract: A fiber optic connector has at least two optical fibers therein have end faces that are positioned such that they are directed in different directions. The end faces can be oriented relative to a key that is provided on a fiber optic connector housing that has a central opening in the main body of the fiber optic connector.