Abstract: A traceable fiber optic cable assembly with an illumination structure and tracing optical fibers for carrying light received from a light launch device is disclosed herein. The traceable fiber optic cable assembly and light launch device provide easy tracing of the traceable fiber optic cable assembly using fiber optic tracing signals. Further, the launch connector is easily attached to and removed from the fiber optic connector with repeatable and reliable alignment of optic fibers, even when the fiber optic connector is mechanically and/or optically engaged with a network component. The fiber optic connectors are configured to efficiently illuminate an exterior of the connector for effective visibility for a user to quickly locate the fiber optic connector.

Abstract: Frequency independent isolation of duplexed ports in distributed antenna systems (DASs) is disclosed. Instead of providing a duplexer in a DAS that provides frequency dependent separation between downlink and uplink communications signals, an isolation circuit is provided. The isolation circuit is coupled to a duplexed port that provides downlink communications signals to the DAS and receives uplink communications signals from the DAS. To isolate uplink communications signals from the downlink communications path, the isolation circuit includes a directional coupler. The directional coupler provides frequency independent isolation between uplink communications signals and a downlink communications path in the DAS. Further, to isolate downlink communications signals from the uplink communications path, the isolation circuit includes at least one circulator isolator.

Abstract: An electrostatic chucking apparatus includes a movable member arranged for movement relative to an axial axis, at least one electrostatic chuck coupled to the movable member, and a stationary member. At least one moving insulated electrode is coupled to the movable member, and at least one stationary insulated electrode is coupled to the stationary member in an axial position corresponding to the at least one moving insulated electrode. A slip ring contact couples electrical energy from the at least one stationary insulated electrode to the at least one moving insulated electrode.

Abstract: A glass substrate support system includes a first and second vacuum members extending lengthwise in a glass substrate feed direction along opposing edges of a flexible glass substrate. Each vacuum member has a vacuum body including a pressure chamber located therein and a support surface having a vacuum opening extending therethrough and in communication with the pressure chamber. A support rod assembly is provided that includes a plurality of support rods located between the first second vacuum members in the glass substrate feed direction. The support rod assembly has an out-of-plane configuration that supports the flexible glass substrate in a downward arc orientation.

Abstract: Assemblies, optical connectors, and methods for bonding optical fibers to a substrate using a laser beam are disclosed. In one embodiment, a method of bonding an optical fiber to a substrate includes directing a laser beam into the optical fiber disposed on a surface of the substrate, wherein the optical fiber has a curved surface and the curved surface of the optical fiber focuses the laser beam to a diameter that is smaller than a diameter of the laser beam as it enters the optical fiber. The method further includes melting, using the laser beam, a material of the substrate at a bond area between the optical fiber and the surface of the substrate such that the optical fiber is bonded to the surface of the substrate.

Abstract: Continuous processes for making ethylene glycol form aldohexose-yielding carbohydrates are disclosed which enhance the selectivity to ethylene glycol.

Abstract: Disclosed is an apparatus for conditioning molten glass. The apparatus includes a connecting tube assembly having a conduit for conveying the molten glass, the conduit (108) including at least two flanges (112, 114) and a sealing member (118) disposed between the at least two flanges (112, 114) around an outer peripheral region of the flanges, thereby forming an enclosed volume between an outer wall (110) of the conduit, the at least two flanges (112, 114) and the sealing member (118). An atmosphere within the volume may be controlled such that a predetermined partial pressure of hydrogen or a predetermined partial pressure of oxygen may be maintained within the volume. A current may be established between the at least two flanges to heat the conduit.

Abstract: Embodiments of the disclosure are directed to a bend induced light scattering (BIS) optical fiber and method of making. The BIS optical fiber includes a core of pure silica devoid of nanovoids and a cladding surrounding the core. The core has a first index of refraction and the cladding has a second index of refraction that is lower than the first index of refraction of the core. The first index of refraction of the core and the second index of refraction of the cladding are configured to maintain light within the core when the BIS optical fiber is unbent in a light retaining position and to emit light from the core to the cladding at a bend in the BIS optical fiber when the radius of curvature of the bend is less than a critical radius of curvature and the BIS optical fiber is in a light emitting position.

Abstract: An exemplary shingle includes at least one coated shingle sheet defining a headlap portion and a tab portion each having opposed upper and lower surfaces. A first line of adhesive is adhered to one of the upper surface of the headlap portion and the lower surface of the tab portion, and includes a first thermally activated adhesive material. A second line of adhesive is adhered to one of the upper surface of the headlap portion and the lower surface of the tab portion, and includes a second thermally activated adhesive material having a minimum activation temperature less than a minimum activation temperature of the first thermally activated adhesive material.

Abstract: An optical communication cable is provided. The cable includes a plurality of elongate optical transmission elements wrapped around an elongate central strength member such that a portion of the length of the plurality of wrapped elongate optical transmission elements form a spiral portion around the elongate central strength member. The cable includes an elastic sleeve surrounding the plurality of elongate optical transmission elements, and the elastic sleeve is formed from an extruded first material. The cable includes a cable body formed from an extruded second material different from the first material, and the cable body surrounds the film, and the cable body has an inner surface that faces the outer surface of the film.

Abstract: Embodiments of the disclosure relate to selective multichannel amplification in a distributed communication system. In this regard, a remote antenna unit (RAU) in the distributed communication system receives downlink digital signals associated with downlink channels having respective downlink channel bandwidths. The RAU digitally scales the downlink digital signals based on respective digital scaling factors to generate scaled downlink digital signals having a substantially equal channel power density in the downlink channels. By digitally scaling the downlink digital signals to provide the substantially equal channel power density in the downlink channels, it is possible to provide substantially uniform radio frequency (RF) coverage range across the downlink channels, thus helping to improve overall RF coverage and user experience in a coverage area of the distributed communication system.

Abstract: Disclosed herein is a traceable fiber optic cable assembly with indication of polarity. In particular, the traceable fiber optic cable assembly includes a traceable fiber optic cable, a first duplex connector at a first end of the fiber optic cable, and a second duplex connector at a second end of the fiber optic cable. A first tracing end of the tracing optical fiber is in a preconfigured orientation in the first duplex connector offset from a central axis of the first duplex connector, and a second tracing end of the tracing optical fiber is in a preconfigured orientation in the second duplex connector offset from a central axis of the second duplex connector. The tracing optical fiber receives an optical tracing signal for propagation to the second tracing end of the first tracing optical fiber to indicate a first orientation of the first duplex connector corresponding to a first polarity state of the traceable fiber optic cable assembly.

Abstract: A flame retardant and/or crush-resistant optical cable is provided. The cable includes a plurality of optical fibers and an inner jacket surrounding the plurality of optical fibers. The inner jacket includes an inner layer and an outer layer. The cable includes an armor layer surrounding the inner jacket. The cable includes an outer jacket surrounding the armor layer. The inner layer of the inner jacket, the outer layer of the inner jacket and/or the outer jacket are formed from one or more different material providing different properties to the cable. For example, the outer jacket may be formed from a flame-retardant, zero-halogen polymer material, the inner layer of the inner jacket may be chemically resistant to inorganic material, and the outer layer of the inner jacket may be chemically resistant to organic material.

Abstract: A system and method of delivering fiber optic communication service is provided. The method includes monitoring a strain signal generated by a strain-sensing optical fiber embedded in a roadway. The method includes comparing the strain signal to a predetermined allowable strain threshold of an optical communication cable associated with the strain-sensing optical fiber. The method includes relieving strain at a position along a length of the optical communications cable when the strain signal is determined to exceed the predetermined allowable strain threshold.

Abstract: A traceable cable includes at least one data transmission element, a jacket at least partially surrounding the at least one data transmission element, and a tracing optical fiber incorporated with and extending along a length (l) of the cable. The tracing optical fiber includes a core having a first index of refraction and a cladding having a second index of refraction less than the first index of refraction, with the cladding substantially surrounding the core. The tracing optical fiber also includes periodically spaced apart scattering sites spaced along the optical fiber at a spacing ratio of n sites per meter, wherein each scattering site is configured to scatter no more than about 1/(n*l) times optical power provided to the tracing optical fiber. Related systems and methods are also disclosed.

Abstract: Methods for cleaving an optical fiber that extends from a ferrule are provided herein. The ferrule can be aligned on a first side of a scribe wire and an unconstrained end of the optical fiber on a second side of the scribe wire. Tension can be applied to the scribe wire with the optical fiber. Relative motion between the scribe wire and the optical fiber can be caused, while the tension is applied with the optical fiber. The scribe wire and the optical fiber can be separated. A fiber optic shard can be cleaved from the optical fiber. The fiber optic shard may include the unconstrained end of the optical fiber.

Abstract: Embodiments of a glass-based article including a first surface and a second surface opposing the first surface defining a thickness (t) of about 3 millimeters or less (e.g., about 1 millimeter or less), and a stress profile, wherein all points of the stress profile between a thickness range from about 0·t up to 0.3·t and from greater than 0.7·t, comprise a tangent that is less than about ?0.1 MPa/micrometers or greater than about 0.1 MPa/micrometers, are disclosed. In some embodiments, the glass-based article includes a non-zero metal oxide concentration that varies along at least a portion of the thickness (e.g., 0·t to about 0.3·t). In some embodiments, the concentration of metal oxide or alkali metal oxide decreases from the first surface to a point between the first surface and the second surface and increases from the point to the second surface. The concentration of the metal oxide may be about 0.05 mol % or greater or about 0.5 mol % or greater throughout the thickness.

Abstract: The glass-based ferrules include a glass substrate and two spaced-apart guide tubes, which can also be made of glass. The guide tubes include bores sized to receive guide pins from another ferrule. The ferrule can be used to form an optical interconnection device in the form of a waveguide connector that includes a planar lightwave circuit that supports multiple waveguides. The ferrule can also be used to form an optical interconnection device in the form of a fiber connector that includes a support substrate and an array of optical fibers supported thereby. The waveguide connector and fiber connector when mated form an integrated photonic device. Methods of forming the ferrule components, the ferrules and the optical interconnection devices are also disclosed.

Abstract: Optical network units (ONUs) for high bandwidth connectivity, and related components and methods are disclosed. A fiber optical network ends at an ONU, which may communicate with a subscriber unit wirelessly at an extremely high frequency avoiding the need to bury cable on the property of the subscriber. In one embodiment, an optical network unit (ONU) is provided. The ONU comprises a fiber interface configured to communicate with a fiber network. The ONU further comprises an optical/electrical converter configured to receive optical downlink signals at a first frequency from the fiber network through the fiber interface and convert the optical downlink signals to electrical downlink signals. The ONU further comprises electrical circuitry configured to frequency convert electrical downlink signals to extremely high frequency (EHF) downlink signals at an EHF, and a wireless transceiver configured to transmit the EHF downlink signals to a proximate subscriber unit through an antenna.

Abstract: Embodiments for providing reference signal generation redundancy in wireless communications systems are disclosed. To avoid a single point of failure in reference signal generation that could cause components relying on the reference signal to not operate properly, the reference signal generation circuits disclosed herein include a plurality of reference signal generation modules. One reference signal generation module is configured as the master reference signal generation module to generate a master reference signal distributed in the wireless communication system. The other reference signal generation modules are configured as slave reference signal generation modules. If a failure is detected in the generation of the master reference signal in the master reference signal generation module, another slave reference signal generation module is reconfigured to be the new master reference signal generation module to generate the master reference signal.