Abstract: The present disclosure relates to a plasma treatment (under atmospheric conditions or under vacuum conditions) of a jacketed cable comprising a cable jacket and a heat shrink tubing. The plasma treatment improves retention properties of an optical fiber cable assembly by imparting a permanent change on a polymer surface of the cable jacket by cross-linking, leading to eventual graphitization, that can result in a diffusion barrier layer at an interface of the cable jacket and the heat shrink tubing, which prevents or minimizes plasticizer migration and results in an environmental seal (e.g., a long-term water tight seal).

Abstract: A method of terminating an optical fiber having an inner core with a fiber optic connector including a ferrule having a micro-bore and an end face with a mating location is disclosed. The method includes determining a bore bearing angle of a bore offset of the micro-bore in the ferrule; determining a core bearing angle of a core offset of the inner core in the optical fiber; orienting the ferrule and the optical fiber relative to each other to minimize the distance between the inner core and the mating location; heating the ferrule to an processing temperature above room temperature; and coupling the optical fiber to the micro-bore of the ferrule. The size of the micro-bores and optical fibers may be selected to maximize the number of interference fits in a population of ferrules and optical fibers while minimizing failed fittings between the ferrules and optical fibers in the populations.

Abstract: A cable entry sealing system includes a housing having a first housing end and a second housing end; a sealing and shielding member having a portion insertable into the housing, the sealing and shielding member comprising: a plug portion and a medial sealing portion, extending from the plug portion. The medial sealing portion includes a first raised edge, a lip sealing portion extending outwardly from the first raised edge, and a medial body section having a second raised edge. The system further includes an end sealing portion, extending from the medial portion, and at least one compression member coupled to the end sealing portion. The sealing and shielding member is configured to prevent contamination into the cable entry sealing system and distortion of the at least one compression member.

Abstract: Fiber optic connectors and connectorized fiber optic cables include connector housings having locking portions defined on the connector housing that allow the connector housing to be selectively coupled to a corresponding push-button securing member of a multiport assembly. Methods for selectively connecting a fiber optic connector to and disconnecting the fiber optic connector from the multiport assemblies allow for connector housings to be forcibly and nondestructively removed from the multiport assembly.

Abstract: An optical connection substrate that includes a fiber cavity recessed into a first surface of the optical connection substrate, where the fiber cavity has a plurality of cavity walls and a cavity floor. The optical connection substrate also includes a plurality of fiber receiving grooves recessed into the first surface and a plurality of integrated waveguides disposed within a substrate body. The plurality of cavity walls have an interface cavity wall and the plurality of fiber receiving grooves extend from the interface cavity wall toward the plurality of integrated waveguides in alignment with the plurality of integrated waveguides.

Abstract: Embodiments of an optical fiber cable are provided. The optical fiber cable includes an outer jacket, an inner jacket, a porous insulating layer, and at least one optical fiber. The outer jacket has a first thickness between its inner surface and its outer surface. The inner jacket has a second thickness between its inner surface and its outer surface. The inner jacket is disposed within the outer jacket. The porous insulating layer is disposed between the inner jacket and the outer jacket. The porous insulating layer is configured to reduce the transfer of heat to the inner jacket during combustion of the outer jacket. The optical fiber is disposed within the inner jacket. In the optical fiber cable, the first thickness is less than the second thickness, and each of the outer jacket and the inner jacket include at least one flame retardant additive.

Abstract: A fiber optic cable includes a cable jacket having an outer surface defined by a cable jacket outer diameter JOD and an inner surface defined by a cable jacket inner diameter JID; a plurality N of optical fibers, where N?4, contained within the cable jacket and positioned a distance away from the cable jacket inner diameter, with each optical fiber having a core, a cladding surrounding the core, and at least one coating surrounding the core with the at least one coating having an outer coating diameter less than or equal to about 200 microns and wherein the cable jacket outer diameter JOD is less than or equal to 1 mm.

Abstract: An optical fiber cable includes a jacket and a plurality of stranded core subunits, each core subunit comprising a flexible sheath and a plurality of ribbons arranged in a ribbon group, wherein each ribbon of the plurality of ribbons comprises a plurality of connected fibers such that 50-70% of the cross-sectional area inside the sheath is occupied by the connected fibers. The flexible sheath may be an extruded PVC material that conforms to the shape of the ribbon stack and keeps all of the ribbons acting as a unitary body during bending.

Abstract: A bracket may include a structural portion including at least one relatively rigid first material, and a sealing portion including at least one relatively elastic second material. The bracket may also include a first receiver including a first retainer portion configured to be coupled to an end of a first frame member, and a first sealing interface configured to provide a substantially fluid-resistant seal between a portion of the end of the first frame member and the first receiver. The corner bracket may also include a second receiver substantially parallel to the first receiver and including a second retainer portion configured to be coupled to an end of a second frame member, and a second sealing interface configured to provide a substantially fluid-resistant seal between a portion of the end of the second frame member and the second receiver. The bracket may be incorporated into a cabinet frame.

Abstract: A sensing cable for protection against rodent damage includes an optical component comprising at least one optical fiber, a plurality of armor components embedded in the jacket, and a strength member embedded in the cable jacket, wherein when viewed in cross-section, each component of the plurality of armor components and the strength member surround the optical component with a gap formed between each component of the plurality of armor components and the optical transmission component and the strength member.

Abstract: Embodiments of a method of collecting a tail section of a long product, such as an optical fiber cable, are provided. In the method, a lead wire from a tail spool is unwound, and the lead wire is fed through a flange of a main spool. The tail spool and the main spool have a common rotation axis. The lead wire is attached to the long product. The tail spool is rotated while holding the main spool stationary so as to wind the lead wire and the tail section onto the tail spool. The rotation of the tail spool is stopped, and the main spool and the tail spool are rotated together so as to wind the long product onto the main spool. Also provided are embodiments of a winding apparatus using the tail spool and a tail reel that includes the tail spool and a drive mechanism.

Abstract: Wavelength-based random access in an optical communications network for a wireless communications system (WCS) is disclosed. An optical network unit(s) (ONU(s)) is configured to generate a random access signal comprising an unsolicited buffer occupancy (BO) report to request uplink allocation as soon as the ONU(s) receives a non-periodic uplink data burst. The ONU(s) then sends an optical random access signal including the unsolicited BO report to an optical line terminator (OLT) based on a random access wavelength, which is so determined not to cause any interference with a downlink optical communications signal(s) and an uplink optical communications signal(s) being regularly communicated between the OLT and the ONU(s). As a result, it is possible to reduce access delay at the ONU(s) for sending the non-periodic uplink data burst without requiring frequent polling from the OLT, thus helping to reduce signaling overhead and improve throughput of the optical communications network.

Abstract: Measuring an end-to-end delay(s) in a distributed communications system (DCS) is disclosed. The DCS is coupled to a signal source(s) supporting multiple logical channels and includes multiple remote units each communicating in one or more of the logical channels. The DCS is configured to measure an end-to-end delay(s), which includes a path delay(s) between the signal source and the remote units and a local delay(s) at each of the remote units, for each of the logical channels. The measured end-to-end delay(s) can help the signal source to more accurately determine an equivalent coverage range of the DCS, thus making it possible to generate random access preambles for the DCS based on as few Zadoff-Chu (ZC) sequences as possible. By generating the random access preambles based on fewer ZC sequences, it is possible to minimize interference among the random access preambles, thus helping to improve random access performance in the DCS.

Abstract: Embodiments of the disclosure relate to an optical fiber cable. The optical fiber cable includes a cable jacket having an inner surface and an outer surface in which the inner surface defines a central bore along a longitudinal axis of the optical fiber cable and the outer surface defines the outermost extent of the cable. One or more embodiments of the cables described herein have improved bending characteristics and performances, respond positively to thermal cycling tests, provide improved anti-buckling characteristics, and have a reduced production cost compared to other known cables.

Abstract: A optoelectronic assembly is provided including a photonic integrated circuit (PIC) including at least one electronic connection element and plurality of waveguides disposed on a PIC face, a printed circuit board (PCB) including at least one PCB electronic connection element, which is complementary to the at least one electronic connection element of the PIC and the PIC is configured to be flip chip mounted to the PCB, a lidless fiber array unit including a support substrate having a substantially flat first surface and a signal fiber array including a plurality of optical fibers supported on the first surface, and an alignment substrate disposed on the PIC face and configured to align the plurality of optical fibers of the signal fiber array with the plurality of waveguides.

Abstract: Methods, systems, and computer program products for storing data in, and reading data from, machine-readable optical labels are disclosed. A machine-readable optical label includes a data storage layer and a substrate having a reflective surface. The data storage layer defines a plurality of data storage patterns in each of a corresponding number of absorption bands. Each of the data storage patterns encodes a portion of the data stored in the label as a reflectivity of the label in the absorption band of the data storage pattern. The label is read by capturing images of the label in each of a plurality of color channels, with each color channel including one absorption band and excluding the other absorption bands. The data stored by each data storage pattern is then decoded from the image in the corresponding color channel.

Abstract: An entry module for facilitating passage of one or more cables into an enclosure may include first and second module plates. The first module plate may include a first edge defining a first edge profile, and the second module plate may include a second edge defining a second edge profile. The first and second module plates may be configured to approach one another, such that the first edge profile and the second edge profile define one or more apertures for receiving a cable passing from exterior the enclosure to the interior of the enclosure. The first edge profile may define first aperture portions and first edge segments between at least some of the first aperture portions, and the second edge profile may define second aperture portions and second edge segments between at least some of the second aperture portions. The first and second aperture portions may define the apertures.

Abstract: Embodiments of the disclosure relate to an optical fiber cable. The optical fiber cable includes a cable sheath having an interior surface and an exterior surface. The interior surface defines a longitudinal bore and the exterior surface defines an outermost surface of the optical fiber cable. The optical fiber cable also includes a plurality of micromodules disposed within the longitudinal bore. Each micromodule of the plurality of micromodules includes a micromodule jacket surrounding at least one optical fiber. The micromodule jacket of each of the plurality of micromodules is made of a first polymer composition having a first melt temperature, and the cable sheath is made of a second polymer composition having a second melt temperature that is less than the first melt temperature. The first polymer composition and the second polymer compositions are both low smoke, zero halogen materials.

Abstract: Disclosed here are embodiments of an optical fiber ribbon. In the optical fiber ribbon, a plurality of optical fibers are arranged in a row. The optical fibers are embedded in a primary matrix. The primary matrix comprises a base resin and an opacifier pigment. A secondary matrix is disposed around the primary matrix, and a layer of printing is disposed between the primary matrix and the secondary matrix. The secondary matrix has a contrast ratio of from 0.2 to 0.9 as measured according to ASTM D2805. Embodiments of a method of preparing an optical fiber ribbon are also disclosed in which optical fibers are arranged in a row and embedded in a primary matrix. Characteristics of the optical fibers is printed onto the primary matrix, and the primary matrix is coated with a secondary matrix having a contrast ratio of from 0.2 to 0.9 according to ASTM D2805.