Abstract: Coaxial connectors are provided that include a connector body having a front end and a rear end, an inner contact post that is at least partly within the connector body, a first internally-threaded nut that is positioned at the front end of the connector body and that is connected to at least one of the connector body and the inner contact post and a second structure that is attached to the first internally-threaded nut. In some embodiments, the second structure may comprise an internally-threaded nut. In other embodiments, the second structure may comprise a locking member. Corresponding female connector ports are also provided.

Abstract: A coaxial connector includes a surge protection component including a plurality of elongated members, a body portion that is configured to receive the surge protection component such that the elongated members extend along an outer surface thereof, and a center conductor disposed inside the body portion and spaced apart from the surge protection component so as to create a gap therebetween

Abstract: Fiber optic adapter mounting structures include a frame having a front face and a rear face, and at least first and second substantially identically-sized and shaped openings that extend through the frame. A first adapter collar is mounted in the first opening and second adapter collar is mounted in the second opening. The first and second adapter collars each have a fiber optic adapter mounting cavity that includes opposed first and second snap clip engagement surfaces therein. A first fiber optic adapter that includes first and second snap clips is mounted in the first adapter collar, and a second fiber optic adapter that includes third and fourth snap clips is mounted in the second adapter collar. The first and second fiber optic adapters are different types of fiber optic adapters that are designed to mate with different types of fiber optic cable terminations.

Abstract: Fiber adapter modules for use as interfaces at both ends of multi-fiber trunk cables position the channels of plural fiber optic transceivers onto fibers of the trunk cables in an efficient manner, such that normally dark fibers of a trunk cables are utilized. The fiber adapter modules include trunk-side ports for receiving adapters of multi-fiber trunk cables and transceiver-side ports for receiving adapters carrying both transmit channels and receive channels of fiber optic transceivers. Optical interconnections are provided within the fiber adapter modules to place at least one transmit channel or at least one receive channel of a first fiber optic transceiver at a first trunk-side port and to place at least one transmit channel or at least one receive channel of a second fiber optic transceiver at the first trunk-side port.

Abstract: A datacommunication interconnection system includes (a) an extension trunk cable-connector assembly and (b) a trunk cable-connector assembly. The extension trunk cable-connector assembly comprises: a first cable including a plurality of first subunits, each of the first subunits comprising a plurality of twisted pairs of conductors; a jack attached to one end of the cable; and a plug attached to an opposite end of the cable. Each of the jack and the plug includes a contact for each of the conductors of the cable. The trunk cable-connector assembly comprises: a second cable including a plurality of second subunits, each of the second subunits comprising a plurality of twisted pairs of conductors; a plug attached to one end of the second cable and connected with the jack of the extension trunk cable; and a plurality of RJ-45 connectors attached to subunits at an opposite end of the second cable.

Abstract: A terminus for a fiber optic cable includes a ferrule. In one embodiment, an optical fiber of the cable passes through a central bore of the ferrule and is attached to a lens seated in a conical or cylindrical seat formed in an end surface of the ferrule by an epoxy. In a second embodiment, an optical fiber of the cable passes through the central bore of the ferrule. Next, a cap sleeve with a lens therein is slid over and attached to the ferrule such that the lens abuts or is attached to the optical fiber. In either embodiment, an inspection slot may optionally be formed in the ferrule and/or the cap sleeve to allow a technician to inspect the state of the attachment and/or abutment and/or spacing of the optical fiber and lens.

Abstract: RF signal amplifiers for cable television networks are provided that include an RF input port. a power amplifier coupled to the RF input port and a power divider having an input that is coupled to an output of the power amplifier. The power divider includes a first directional coupler that is coupled to an output of the power amplifier. The directional coupler includes a first output branch and a second output branch. A first bypass circuit is coupled between the first and second output branches of the first directional coupler. A response of the power divider includes a null that substantially blocks signals received at the input of the power divider from passing to outputs of the power divider in a subset of frequencies within the range of 5 MHz to 1550 MHz. These RF signal amplifiers may provide improved performance, robustness and reliability when used in MOCA networks.

Abstract: Methods of determining patch cord connectivity information include receiving, at each of a plurality of RFID readers, a signal from an RFID tag that is associated with a first patch cord and then, identifying the one of a plurality of connector ports that the first patch cord is connected to based at least in part on respective strengths of the signals received at each of the plurality of RFID readers. RFID triangulation systems and methods of calibrating such systems are also provided.

Abstract: Communications patching system and methods utilizing common-mode channel communications are provided for identifying patch panel ports to which a backbone cable is connected in a communications patching system, for identifying a patch panel port to which a horizontal cable terminating at a telecommunications outlet is connected in a communications patching system, and for identifying the physical location of first and second connectors of a patch cord in a communications patching system having multiple patching zones.

Abstract: An air feed system for a fuel cell cabinet is provided. The air feed system supplies temperature controlled air to a fuel cell. The air feed system includes a controller that controls the air feed system for maintaining a predetermined temperature range of the temperature controlled air entering the fuel cell.

Abstract: A remote door access monitoring system includes a central monitoring component and a remote monitoring component. The central monitoring component includes an optical source, an optical power level receiver, and a microcontroller. The optical power level receiver is in communication with the microcontroller. The remote monitoring component includes an optical switch that is operably associated with a door of a communications equipment cabinet. The communications equipment cabinet is located at a geographical location different from a geographical location of the central monitoring component. The optical source transmits an optical signal from the optical source to the optical switch and back to the optical power level receiver. The optical switch attenuates the optical signal in response to opening and closing of the door. The optical power level receiver is configured to detect an attenuated optical signal and then notify the microcontroller of the existence of an attenuated optical signal.

Abstract: A datacommunications patching system includes: a mounting frame; a first module mounted in the mounting frame and including a plurality of connector ports on one side thereof and first and second connectors on another side thereof; and a backplane that is mounted in the mounting frame. The backplane electrically connects to the first module via the first connector when the first module is mounted in the mounting frame in a first orientation, and wherein the backplane electrically connects to the first module via the second connector when the first module is mounted in the mounting frame in a second orientation that is inverted from the first orientation.

Abstract: Communications patching devices include first and second connectors mounted immediately adjacent to each other. The first connector includes a first output terminal and a second output terminal that are connected to respective first and second conductive paths, and the second connector includes a third output terminal and a fourth output terminal that are connected to respective third and fourth conductive paths. The first and second conductive paths form a first differential pair of conductive paths and the first and second output terminals form a first differential pair of output terminals. The third and fourth conductive paths form a second differential pair of conductive paths, and the third and fourth output terminals form a second differential pair of output terminals.

Abstract: A fiber optic component includes a body having at least one receptacle configured to receive a fiber optic connector, a shutter base mounted to the body at a mounting location adjacent to the at least one receptacle, and a first shutter connected to the shutter base by a first hinge. The first shutter, first hinge and shutter base are unitarily formed, and the first shutter is shiftable from a first position biased against the body and covering the at least one receptacle to a second position biased to an angularly spaced position relative to the first position.

Abstract: A communications patching system includes a patch panel having a plurality of connector ports on a side thereof, and a sensor module secured to the patch panel side. The sensor module includes a plurality of pairs of IR emitters and sensors, with each emitter/sensor pair located adjacent to a respective one of the connector ports. Each emitter/sensor pair is configured to detect insertion and removal of a patch cord connector from a respective connector port. The sensor module includes a housing and a printed circuit board (PCB) secured to the housing. The IR emitters and sensors are electrically connected to the PCB, and the PCB includes a processor and memory for controlling the IR emitters and sensors.

Abstract: A network interface unit includes an input for receiving downstream signals from an optical fiber, an optical pathway leading from the input, a laser connected to the optical pathway for transmitting upstream signals in a first wavelength band, and a receiver for receiving downstream signals in a second wavelength band that doesn't overlap with the first wavelength band. A first filter is provided for filtering signals in a third wavelength band from the optical pathway before signals in the third wavelength band reach the receiver, and a second filter is provided between the input and the laser for filtering signals in a fourth wavelength band from the optical pathway, the fourth wavelength band not overlapping with the first wavelength band or the third wavelength band, and an arrangement is also provided for preventing processing of the fourth wavelength band downstream of the second filter. Also a filtering method.

Abstract: A fiber management component includes a housing having an interior, a floor in the interior and a first wall having an aperture communicating with the interior. A platform is connected to the housing, which platform has a first portion with a bore that has a first end facing the aperture and a second portion forming a channel extending toward the bore. The channel is configured to releasably secure a spring push of a fiber optic connector to the platform and the bore is configured to slidably support a ferrule of a fiber optic connector.

Abstract: Distribution and amplification systems for cable television networks include a tap unit having a first RF tap port and a second RF tap port, a voice-over IP (“VoIP”) RF signal amplifier and a non-VoIP RF signal amplifier. The VoIP RF signal amplifier is connected to the first RF tap port of the tap unit, and includes an amplified signal path and a passive, non-interruptible signal path. The non-VoIP RF signal amplifier is connected to the second RF tap port of the tap unit, and includes an amplified signal path. The VoIP and non-VoIP RF signal amplifiers are each configured to terminate their amplified signal paths to respective matched terminations in response to a power outage.

Abstract: A laser unit, usable in a network interface unit (NIU), that includes a laser adapted to generate an optical signal having a wavelength, a temperature control system for establishing a temperature of the laser and a controller functionally connected to the temperature control system for setting the temperature, the controller configured to automatically vary the temperature between a high temperature and a low temperature different than the high temperature. Also an NIU and a system of NIU's including the laser and an associated method of controlling the laser.

Abstract: A communications patching system includes first and second patch panels, each having a plurality of connector ports, and a patch cord that is configured to selectively interconnect a connector port in the first patch panel with a connector port in the second patch panel. Each patch panel includes a port identification circuit that is electrically coupled with the connector ports of the respective patch panel. The port identification circuit of each patch panel is configured to transmit a signal to a connector port of the other patch panel over a common mode transmission path of the patch cord. The first and second connector ports connected by the patch cord are identified from the signal path.