Abstract: A cable management assembly and method of assembly. The trough assembly includes first and second trough members each having first and second upstanding sidewalls extending from a base defining a generally U-shaped trough which defines first and second cable pathways respectively for receiving at least one telecommunications cable. A first end of the first trough member and a second end of the second trough member define a snap-together mating arrangement which couples through longitudinal sliding movement the first trough member to the second trough member so that the first cable pathway communicates with the second cable pathway.

Abstract: A telecommunications patch panel including a frame member defining a plurality of connector locations, the frame member including front and rear faces, and a first flange extending outwardly from the rear face including at least two tabs. Also included is a cable management member with first and second legs including notch portions and a cable bar coupled to the first and second legs. The notch portions on the cable management member may be engaged within the tabs located on the frame member so as to detachably couple the cable management member to the frame member.

Abstract: A method for polishing an end face of a ferrule is disclosed herein. The ferrule includes an opening in which an optical fiber is positioned. The method includes the step of recessing an end of the optical fiber relative to the end face of the ferrule. The method also includes the step of polishing the end face of the ferrule after the end of the optical fiber has been recessed.

Abstract: The present invention relates to a fiber optic device for the optically connecting optical fiber. The device consists of fiber optic connectors holding the terminal ends of optical fiber in ferrules and an adapter for receiving fiber optic connectors. The adapter includes a sleeve within a longitudinal opening which aligns the ferrules and the terminal end of the optical fiber held by the ferrules. Within the sleeve is placed an attenuator which extends across the longitudinal opening in the sleeve and is held at an angle to the longitudinal axis of the opening by slots in the sidewall of the sleeve. The angle at which the attenuator is held may be perpendicular or non-perpendicular to the longitudinal axis of the sleeve. The sleeve is further prevented from rotating within the adapter by pockets formed in the inner wall of the longitudinal opening engaging extensions of the attenuator beyond the sidewall of the sleeve.

Abstract: A multi-user simulation system is provided. The multi-user simulation system utilizes a processing unit with multiple ports, the processing system being coupled via communications lines to a central unit. The processing system is adapted to execute test software and communicate to the central unit via the multiple ports to emulate multiple users of a communications network, thus simulating real-world loading conditions of the communication network. A method for testing the central unit is also disclosed.

Abstract: Multiple digital audio transformer circuits are included in a module for mounting in a chassis. These digital audio transformer circuits are comprised of a front mounted twisted pair digital audio cable connector and a rear mounted coaxial cable connector, with circuitry including baluns electrically linking the front and rear connectors to reduce the impedance of the signal and attenuate the amplitude of the signal voltage. In one embodiment, the module may also include removable attenuation pads accessible through the front face of the module to allow variation of the level of voltage attenuation. The preferred embodiment of the module bi-directional transforms 110 Ohm digital audio signals and 75 Ohm coaxial signals. If transformation of other levels of impedance are desired, modules may also allow for removal and replacement of the baluns. A digital audio transformer system including multi-circuit modules and rack mount equipment chassis is also provided.

Abstract: A hinge clip apparatus for selectively engaging/disengaging a cover includes a base, a hinge defining a hinge axis, and a plate. The plate is pivotally moveable relative to the base along the hinge which connects the base to the plate. The plate includes a hole and a spring member extending through the hole. The spring member has an extension tab capable of engaging the cover and disengaging from the cover when the spring member is compressed.

Abstract: A cable exit trough is mountable to a lateral trough section either during initial assembly of the cable routing system, or at a later date. The exit trough includes a bracket portion mountable to the top edge of one of the sides of the lateral trough section. Two lead-ins are provided to lead the cable in an upward direction from the lateral trough section to the exit trough. The exit trough includes an exit trough portion extending from the bracket portion upwardly away from the lateral: trough section. The exit trough portion includes a convexly curved bottom trough surface, and two convexly curved upstanding sides. The exit trough portion and the lead-ins define a cable pathway from the lateral trough section to an exit point of the exit trough portion which can either lead downwardly relative to the lateral trough section, or horizontally.

Abstract: A connector assembly and method, the assembly having a housing which defines a connector window. A connector is disposed within the window. The connector is slidable between a first and second position relative to the housing. The assembly may include a carriage for receiving one or more connectors. The carriage slides with the connectors between first and second positions. The assembly may include means for retaining the carriage and connectors in a selected position relative to the housing.

Abstract: A method of distributed loop control is described. The method includes receiving at a service unit downstream control and telephony information modulated on orthogonal carriers in a first frequency bandwidth over a distribution network. The method further includes transmitting from the service unit upstream telephony information and control data modulated on orthogonal carriers in a second frequency bandwidth over the distribution network. In addition, the method includes adjusting at least one local transmission characteristic when an adjustment command from a head end terminal is received in the downstream control data. The downstream control data is based on prior upstream transmissions from the service unit.

Abstract: Two sub-assemblies in a fiber optic device are fitted to respective end faces of a central section, along a longitudinal axis. The end faces of the central section are non-parallel. Butting the sub-assemblies to respective ends of the central section permits relative adjustment of the two sub-assemblies in substantially decoupled degrees of freedom. This results in a simpler adjustment procedure for aligning the two sub-assemblies. Furthermore, the mounting of the sub-assemblies using angled faces permits the use of relatively thin layers of adhesive that reduce misalignment problems arising from mismatched thermal expansion when the temperature changes.

Abstract: A telecommunications patch panel is provided having a plurality of connector modules rotatably mounted to a frame member. Each connector module has a front face and an opposite facing rear face, and each front face includes a plurality of connector jacks. Each rear face includes a plurality of wire termination blocks. The wire termination blocks are electrically connected to the connector jacks. Each connector module is rotatable about a rotation axis relative to the frame member. A lock selectively locks each connector module to the frame member as desired. The connector jacks and the connector modules are arranged in linear arrays perpendicular to the axis of rotation.

Abstract: A switching coax jack module and jack component provide for a removable DSX jack which can be slid into and out of the front of a jack module housing without disconnecting other components of the jack module and without disconnecting the module from a chassis. The jack includes a projecting post, and two rear ports. The post and rear ports cooperate with a rear interface unit including two projecting plugs, and a port for the post. The rear interface unit may include a switch activated by the post for disconnecting two of the rear connectors of the module when the jack is mounted to the module and engaged with the rear interface unit.

Abstract: A chassis and associated telecommunication circuit card are disclosed. The chassis has heat dissipation and flame containment features while accommodating a high density of the circuitry cards. Embodiments include an inner housing with a double-layer middle floor dividing the chassis into top and bottom chambers. Each layer has partially aligned slots, and an air gap is provided between the two layers. Embodiments also include a double-layer mesh cover with an air gap existing between the two mesh layers. Projections and grooves are provided on the inner surfaces of the inner housing to receive circuit cards having a guide on one edge and a fin on another. The circuit card includes conductor structures such as multiple board layers with paired and segregated conductors. The circuit card also includes some components positioned to cooperate with the ventilation features of the chassis and includes some components chosen for low-power consumption or reduced flammability.

Abstract: A semiconductor laser with improved device characteristics and novel protection against high power output degradation is disclosed. The laser comprises a plurality of layers deposited on a substrate, including an active layer with neighboring cladding layers, so as to define a waveguide, said waveguide having opposing end surfaces. A single crystal mirror layer is formed directly on at least one of the end surfaces, providing improved device characteristics and a longer life time for high power output applications. The mirror layer has sufficient thickness and is made of a material having a refractive index sufficiently different from that of the active layer to substantially modify the reflectivity of the first end surface. In a preferred embodiment, the laser is an AlGaAs laser designed to operate at 980 nm, and the single crystal mirror layer comprises a large band gap material, such as ZnSe, MgS, or BeTe.

Abstract: The present invention relates to the management of cables extending to and from fiber termination blocks with sliding angled fiber adaptor modules within a fiber distribution frame.

Abstract: A curved telescoping trough assembly and method of assembly. The assembly includes first and second trough members. Each trough member includes two upstanding sidewalls extending from a base defining a generally U-shaped trough having an open top and a trough interior for receiving at least one telecommunications cable defining a cable pathway. The sidewalls or the base of the trough members may be curved to create a curved cable pathway. The first trough member having an end which slidably receives an end of the second trough member and a portion of the second trough member so that the trough members create a combined angled cable pathway. The size of the portion of the second trough member received by the first trough member is variable so that the trough assembly may be selectively set at a third angle from a range of angles.

Abstract: A semiconductor ridge laser with a tapered ridge is disclosed. The tapered ridge is designed to provide for both gain-medium amplification and mode conversion amplification, the latter resulting in a higher kink power than is obtainable with gain medium amplification alone. The power and lateral mode content of the output beam is determined by the ridge parameters, which include length, width, number of sections and degree and type of taper for the tapered sections. The output beam can be made to have a profile that is more compatible with the lateral modes on an optical fiber than a conventional highly astigmatic output beam by including power in the higher-order lateral modes as well as in the fundamental lateral mode.

Abstract: A flexible cable guide member and assembly, the assembly including first and second cable guide members each having a curved wall with open ends. The curved walls define first and second cable pathways respectively for receiving a telecommunications cable. A first end of the first guide member defines a socket. A second end of the second guide member is rounded to be received by the socket of the first guide member to produce a ball-and-socket joint between the first and second guide members. The second guide member is snap-fit into the socket of the first cable guide member. The guide members define longitudinal slots to allow cables to be added or removed from the assembly. The first and second guide members are preferably identical.

Abstract: The present invention relates to a center conductor insulator with a tapered entry for use with a coaxial cable transmission line connector that provides guiding and centering of a center conductor pin within the connector. The present invention further relates to a front sleeve assembly for use with a coaxial cable transmission line connector which incorporates a center conductor insulator with a tapered entry to guide and center a center conductor pin within the connector. The present invention also relates to a compression ring assembly for mounting a connector to a cable, the assembly having a collet engaging a tapered rear seal to compress the collet about the cable. The present invention further relates to a method of mounting a connector to a cable with a compression ring assembly incorporating a collet and tapered rear seal.