Abstract: Monitoring non-supported wireless spectrum within a coverage area of a distributed antenna system (DAS) in which a listening module connected to a remote unit of the DAS monitors non-supported wireless frequencies (i.e., frequencies that are outside the frequency ranges supported by the downlink and uplink signals of the DAS), via one or more antennas. The listening module also transmits the wireless frequencies to a monitoring module connected to head-end equipment (HEE) of the DAS. In that manner, a monitoring module can use an existing DAS infrastructure to monitor non-supported portions of the wireless spectrum at remote locations. In addition to avoiding the need to run a parallel DAS infrastructure, the disclosed arrangements are also useful in shared spectrum environments and other environments where efficient spectrum utilization is desired.

Abstract: Embodiments disclosed in the detailed description include supporting an add-on remote unit(s) (RU) in an optical fiber-based distributed antenna system (DAS) over existing optical fiber communications medium using radio frequency (RF) multiplexing. An existing DAS comprises at least one existing head end equipment (HEE) communicatively coupled to a plurality of existing RUs through an existing optical fiber communications medium. In aspects disclosed herein, an add-on RU is added to the existing DAS to support additional wireless communications. No new optical fibers are required to be deployed to support communications to the add-on RU in the existing DAS. Instead, the existing DAS is configured to support the add-on RU through the existing optical fiber communications medium using RF multiplexing. As a result, the add-on RU can be added to the existing optical fiber-based DAS without adding new optical fibers, thus leading to reduced service disruptions and deployment costs.

Abstract: A gain control circuit in a wireless distribution system (WDS) is provided. The gain control circuit generates a combined digital communications signal based on a number of received radio frequency (RF) communications signals. The combined digital communications signal has a digital amplitude(s) representing a summed analog power level(s) of the RF communications signals in a predefined number of binary bits. When the summed analog power level(s) exceeds a maximum analog power level represented by the digital amplitude(s) in the predefined number of binary bits, the gain control circuit determines a selected RF communications signal(s) causing the summed analog power level to exceed the maximum analog power level and attenuates the selected RF communications signal(s) to reduce the summed analog power level to below the maximum analog power level. As such, it is possible to achieve a calculated balance between performance, complexity, and cost in the gain control circuit.

Abstract: Embodiments disclosed herein include combining power from isolated power paths for powering remote units in distributed antenna systems (DASs). In one example, a remote unit(s) is configured to include multiple input power ports for receiving power from multiple power paths. The received power from each input power port is combined to provide a combined output power for powering the remote unit. Thus, a remote unit can be powered by the combined output power. To avoid differences in received power on the multiple input power ports causing a power supply to supply higher power than designed or regulated, the input power ports in the remote unit are electrically isolated from each other. Further, the received power on the multiple power inputs ports can be controlled to be proportionally provided to the combined output power according to the maximum power supplying capabilities of the respective power supplies.

Abstract: Embodiments of the disclosure relate to a remote unit supporting radio frequency (RF) spectrum-based coverage area optimization in a wireless distribution system (WDS). A remote unit in a WDS includes a plurality of sector RF paths configured to support sectored coverage areas around the remote unit. Each of the sector RF paths includes an antenna configured to communicate an RF communications signal(s) in an RF spectrum(s). A processing circuit determines a selected downlink sector communications signal(s) to be distributed at a selected power from a selected sector RF path(s) in a selected RF spectrum(s) and provides the selected downlink sector communications signal(s) to the selected sector RF path(s). In this manner, the processing circuit can independently configure a sector RF path(s) to distribute a downlink RF communications signal(s) in an RF spectrum(s) at a desired power(s), thus enabling directional capacity optimization and/or RF interference mitigation around the remote unit.

Abstract: An optical communication cable bundle is provided. The cable bundle includes a bundle jacket having an inner surface defining a bundle passage and an outer surface defining an exterior surface of the cable bundle, and a plurality of optical fiber subunits located within the bundle passage and surrounded by the bundle jacket, each optical fiber subunit having a subunit jacket defining a subunit passage and a plurality of optical fibers located with the subunit passage. A thickness of the bundle jacket is less than a thickness of each of the subunit jackets and the bundle jacket is extruded tight around the subunit jackets to couple the subunits and the bundle jacket.

Abstract: Disclosed herein is a fiber optic-to-waveguide coupling assembly with an overlap for edge coupling. The fiber optic-to-waveguide coupling assembly includes a first coupler having a substrate and at least one data fiber, and an interposer with at least one waveguide. A first coupler overlap portion of the substrate is positionable proximate a first interposer overlap portion of the interposer to form a first overlap therebetween to align the at least one data fiber with the at least one waveguide. The substrate and the interposer may each include complementary alignment features to further align the at least one data fiber and the at least one waveguide. The fiber optic-to-waveguide coupling assembly provides simple and accurate alignment with simplified manufacture and assembly.

Abstract: A method for assigning downlink transmit power levels to radio nodes (RNs) in a small cell radio access network (RAN) includes assigning initial power levels to the RNs. For each cell, first events are counted indicating that UEs receiving a signal from their serving cells with a signal strength below a specified value have entered a coverage hole. For each cell, second events are counted indicating that UEs have re-established a previous connection on one of the cells. For each pair of cells, a coverage hole is identified between them if the number of first events for one cell exceeds a threshold and a number of second events or re-establishment of a previous connection on the other cell exceeds another threshold. For each identified coverage hole, the downlink transmit power level is increased of at least one RN in the pair of cells between which the coverage hole is identified.

Abstract: The present disclosure relates to substrates having laser-induced scattering features located either on the surface of the substrate or within the substrate, along with methods of making such scattering substrates. The disclosed scattering substrates provide improved light extraction properties and may be useful in a variety of applications, such as lighting and electronic displays.

Abstract: A complex prepared by combining a metal compound and an N-heterocyclic carbene has catalytic activity for condensation reaction of polyorganosiloxane compositions. The composition includes the complex, a silanol functional compound having an average per molecule of one or more silicon bonded hydroxy moieties.

Abstract: Components, systems, and methods for determining efficiency of an optical signal source in distributed communication systems are disclosed. Environmentally induced variations in the performance of optical sources used to convert electrical signals to optical signals (such as laser diodes) at the transmitters within the system can be evaluated in real time. Steps can be taken to compensate for these variations. The efficiency of the laser diode can be measured and provided to receivers in the distributed communication system. The receiver may use information related to the slope efficiency measurement to adjust the gain of the receiving amplifiers to provide desired adjustments to the gain. Thus, the receivers in the remote units (RU) receive information about the slope efficiency of the laser diodes at the head end equipment (HEE) and the HEE receives information about the slope efficiency of the laser diodes at the RU.

Abstract: Embodiments of the disclosure relate to allocating digital channels into spectrum chunks in a wireless distribution system (WDS). In a WDS, a central unit is configured to communicate downlink and uplink communications signals with a plurality of remote units over a plurality of downlink and uplink communication links. In one aspect, discrete downlink channels in the downlink communications signals are grouped into downlink spectrum chunks at the central unit when the processing circuitry at the central unit is underutilized. In another aspect, discrete uplink channels in the uplink communications signals are grouped into uplink spectrum chunks at the remote units when the processing circuitries at the remote units are underutilized. By grouping discrete downlink channels into downlink spectrum chunks and/or grouping uplink discrete channels into uplink spectrum chunks, it is possible to optimize system resource utilization in the WDS, thus providing enhanced overall performance in the WDS.

Abstract: A crush resistant optical cable and/or crush resistant optical fiber buffer tube are provided. The cable generally includes a tube having at least one layer formed from a first material and an optical fiber located within a channel of the first tube. The buffer tube is configured to protect optical fibers from crush or impact events through a cushioning action. For example, the first material may be a polymer material having modulus of elasticity of less than 200 MPa, and the layer of the tube acts as a compliant cushioning layer at least partially contacting and surrounding an outer surface of the optical fiber when radially directed forces are applied to the outer surface of the tube.

Abstract: A method can selectively prepare a compound of formula (IV), where each R1 and each R2 are independently selected from an alkyl group, an aryl group, a halogenated alkyl group, or a halogenated aryl group of 6 to 10 carbon atoms each R3 is an alkane-diyl group, and each R4 is hydrogen or an alkyl group. The method involves hydrosilylation of an organohydrogensiloxane oligomer with a carboxylic acid alkenyl ester using an iridium complex catalyst.

Abstract: A method of sealing a workpiece comprising forming an inorganic film over a surface of a first substrate, arranging a workpiece to be protected between the first substrate and a second substrate wherein the inorganic film is in contact with the second substrate; and sealing the workpiece between the first and second substrates as a function of the composition of impurities in the first or second substrates and as a function of the composition of the inorganic film by locally heating the inorganic film with a predetermined laser radiation wavelength. The inorganic film, the first substrate, or the second substrate can be transmissive at approximately 420 nm to approximately 750 nm.

Abstract: A particulate filter having a honeycomb structure of a matrix of interconnected porous walls including inlet cells and outlet cells defining a plurality of inlet channels and outlet channels, respectively, wherein at least a portion of the outlet cells are larger than any of the inlet cells, and a cross-sectional shape of at least some of the outlet channels is rectangular. Honeycomb extrusion dies, honeycomb bodies, honeycomb structures, and methods of manufacture are described, as are other aspects.

Abstract: A method of performing ion exchange of a thin, flexible glass substrate having an average thickness equal to or less than about 0.3 mm to chemically strengthen the glass substrate is disclosed. The chemically strengthened glass substrate comprises a first compressive stress layer having a first depth of layer, and a second compressive stress layer having a second depth of layer, the first and second stress layers being separated by a layer of tensile stress. A laminated article comprising the chemically strengthened glass substrate is also described.

Abstract: A cartridge assembly includes a hub portion having a first end and a second end, a first retaining ring portion including a first snap ring and a first retaining ring member, and a second retaining ring portion including a second snap ring and a second retaining ring member. The cartridge assembly further includes a plurality of disc elements positioned between the first retaining ring portion and the second retaining ring portion, where the plurality of disc elements has an outer diameter that is greater than an outer diameter of the first retaining ring portion and the second retaining ring portion, and a plurality of fastening members positioned at the first end and the second end of the hub portion, the plurality of fastening members extending radially inward from the hub portion.

Abstract: An optical communication cable and related systems and methods are provided. A method for field terminating an optical fiber of a fiber optic distribution cable includes accessing at least one of a plurality of optical fibers of the distribution cable by creating an access location in the distribution cable, inserting a cutting tool through the access location such that the cutting tool extends longitudinally past the access location a predetermined distance, terminating the at least one of the plurality of optical fibers at the predetermined distance, removing at least a portion of the at least one terminated optical fiber through the access location, and inserting the portion of the at least one terminated optical fiber through a furcation tube premounted on a small access closure device.

Abstract: A method of making a fiber optic connector sub-assembly involves: initially disposing a bonding agent in a ferrule bore of a ferrule; heating at least a portion of the ferrule above a melting temperature of the bonding agent so that some of the bonding agent melts; and solidifying the bonding agent that has melted to form the fiber optic connector sub-assembly, all without an optical fiber being disposed within the ferrule bore.