Abstract: In an improved approach to mounting optical elements in a fiber optic device, the positioning and orientation of the element are more accurate and the temperature dependent variations of the position and orientation are reduced. The mount has a protruding tip contact region on a mounting surface. Adhesive is supplied between the optical element and the mounting surface, and the optical element is pressed into contact with the protruding contact tip region, substantially expelling the adhesive from between the optical element and the protruding contact tip region. The adhesive is cured at a temperature exceeding the predetermined temperature range. This permits the adhesive to pull the element on to the contact tip region throughout the operating temperature range. This also permits the optical element to contact the mounting surface so that the optical element's surface is oriented parallel to the mounting plane.

Abstract: Couplers for a cable trough system including a terminal end sized to receive a terminal end of a trough member along a longitudinal direction of the body. A spring may be coupled to the body for securing the terminal end of the trough member to the coupler, the spring including first and second spring arms extending generally in opposition to one another in a plane generally parallel to the longitudinal direction. The spring may be received in a slot formed by the trough member. Also included may be a spring release mechanism coupled to the body, the spring release mechanism sliding in the longitudinal direction between a locked position, such that the first and second spring arms engage the terminal end of the trough, and an unlocked position, such that the first and second fingers release the first and second arms of the spring.

Abstract: The present disclosure relates to a device for holding a plurality of fiber optic connectors. The device includes a clamp defining a plurality of ferrule receiving openings, a set plate with openings for the fibers, an alignment surface on which the ferrules rest, and an actuator for moving moveable portions of the clamp. The clamp has a plurality of moveable portions that at least partially define the ferrule receiving openings. The moveable portions are moveable between a rest, biased closed position in which the ferrules are clamped within the ferrule receiving openings, and an open position in which ferrules can be inserted in the ferrule receiving openings.

Abstract: A port isolator apparatus includes an optical isolator circuit that electrically isolates an input circuit from a high-speed output circuit. The input circuit uses a transistor to control the current flow of a data signal into the optical isolator. The optical isolator generates, from the data signal, an output signal that controls the high-speed output circuit in the regeneration of the output signal. The output signal is substantially similar to the input data signal. The input circuit and the optical isolator circuit are coupled to one power and ground circuit while the high-speed output circuit is coupled to a second power and ground circuit that is isolated from the first power and ground circuit.

Abstract: A three-cavity stabilized laser system is disclosed. The laser system includes a laser with rear and front ends surrounding a gain medium. First and second wavelength-selective reflective elements with respective first and second overlapping reflectivity bandwidths are optically coupled to the laser. The wavelength-selective reflective elements are arranged so that the laser system operates stably in the coherence collapse lasing regime.

Abstract: A reverse path signaling circuit is described which provides less noise and interruption when injecting signals upstream to a head end. The reverse path signaling circuit includes a low pass filter, a status monitor, and a common emitter amplifier. The common emitter amplifier has a emitter region which couples to the status monitor. The status monitor couples to the common emitter amplifier as a single-ended input to the to the emitter region. The status monitor injects status monitor signals into the emitter region for passing the status monitor signals upstream to a head end. The low pass filter is coupled to another input on the common emitter amplifier. An output from the common emitter amplifier is taken at a collector region. The reverse path signaling circuit of the present invention does not require the use of a directional coupler as part of the circuit. Systems and methods are further included within the scope of the present invention.

Abstract: An improved fiber optic tap monitor has characteristics that are flatter over the wavelength range of interest. The tap monitor includes a filter that reflects a major fraction of the light from a first fiber to a second fiber. A photodetector located behind the filter detects the light transmitted by the filter. The reflectance spectrum of the filter is selected to compensate for nonuniformities in the detection response characteristic of the photodetector over the wavelength range of interest, so that the overall response of the tap monitor is relatively flat.

Abstract: In order to reduce the possibility of a laser operating in multiple transverse modes at high power, the laser is provided with laterally asymmetric losses that discriminate against modes higher than the fundamental mode. One approach to doing this is form an asymmetric ridge waveguide in the laser, that allows the light of the higher order modes to leak out of the waveguide.

Abstract: A fiber reinforced thermoplastic pipe member is obtained by a novel continuous process in which the reinforcement fibers are wrapped about the outer pipe surface in an unbonded condition while the pipe member continuously moves in a linear direction and which is followed by sufficient heating of the moving fiber wrapped pipe member to cause thermal bonding between the applied fibers and the pipe member. Automated apparatus for carrying out the continuous process is also disclosed.

Abstract: Power distribution busses and methods are disclosed that provide flexible protection and alarming capabilities. Various embodiments provide interchangeability of fuses and circuit breakers within the same power distribution bus configuration. These various embodiments also provide discrete alarming for fused lines, discrete alarming for lines with circuit breakers, combined alarming for lines having mixed forms of protection, and/or selectable alarming such as combined versus discrete in relation to employing all fused lines, employing all circuit breaker protected lines, or employing mixed line protection.

Abstract: An element management system (“EMS”) interfaces between a telephone company administrative or customer service computer or a terminal and a telephone network element. The EMS contains a proxy database and maintains it between the periods when access to the telephone computer system is desired and available, without detrimentally involving the telephone computer system, the telephone switching network or any elements thereof. The EMS is capable of operating as the sole repository of subscriber data in a telephone computer system configured to operate in such an environment. The proxy database effectively mirrors subscriber data in one or more central offices and/or other network elements of the telephone computer system.

Abstract: A cable routing clip for mounting on a wall having clip arms extending from one side of a crosspiece and mounting tabs extending from the other side, the clips arms and the mounting tabs generally linearly arranged, the clip defining a slot for receiving cables, and a movable gate extending from a distal end of one of the clip arms across the slot to the distal end of the other clip arm. A cable routing clip for mounting on a wall having clip arms extending from one side of a crosspiece and mounting tabs extending from the other side, the clip defining a slot for receiving cables, and a movable gate extending from a distal end of one of the clip arms across the slot to the distal end of the other clip arm.

Abstract: A cable clip includes a housing defining an open space and outer grooves about the housing for mounting the cable clip into a mounting opening, the inner edge of the housing including trumpet flares around the edges of the ends and side to provide bend radius protection for cables passing through the clip and a gate closing off the open sided space. The gate may be attached to the housing by a living hinge.

Abstract: A cable clip includes a housing defining an open space and outer grooves about the housing for mounting the cable clip into a mounting opening, the inner edge of the housing including trumpet flares around the edges of the ends and side to provide bend radius protection for cables passing through the clip and a gate closing off the open sided space. The gate may be attached to the housing by a living hinge.

Abstract: A system of terminating signals in a telecommunication system is disclosed. In one embodiment a line card comprises functional circuitry, line card connector contacts and a termination resistor. The functional circuitry is used to interface first type ports with second type ports. The line card connector contacts are adapted to be selectively coupled to a backplane of a chassis. The termination resistor is adapted to terminate signal lines when a jumper is coupled across select line card contacts.

Abstract: A cable routing clip consists of a rear crosspiece, two clip arms extending from the front of the crosspiece and forming an open end slot, a pair of retaining members extending across the open end of the slot and one or more mounting tabs extending from the rear of the crosspiece. The inside faces of the clips arms are rounded to provide edge protection to cables held by the clip and the outer faces are planar and suitable for applying indicia of the cables within the slot. A front face of a retaining member is also planar and can accept indicia. The rear mounting tabs fit into rectangular slots and include ramped faces and locking notches. When two tabs are present, one of the tabs can be shorter than the so that a smaller rectangular slot can used on one side of a pair of mounting slots. The invention also relates to a riser with one or more channels which receive telecommunications cables and directs and organizers these cables into a plurality of vertical cable paths defined by a plurality of cable clips.

Abstract: A test box including a housing defining a front plane and a back plane. A plurality of jacks are positioned adjacent the front plane. The jacks define a plurality of rows of ports. Each row of ports includes at least 24 ports. The jacks also include electrical contacts corresponding to each of the ports. The testing box also includes a plurality of pairs of electrical connectors positioned adjacent the back plane. Each pair of electrical connectors includes an input connector for inputting signals into the test box and an output connector for outputting signals from the test box. The test box further includes a plurality of circuit boards positioned within the housing. The circuit boards include tracings for conveying signals from the input connectors to the jacks and for returning the signals from the jacks back to the output connectors.

Abstract: A rotating radius limiter for an optical fiber cable management panel is provided. The radius limiter includes a radius limiter structure and a bracket that permit relative motion between the structure and the bracket. The structure and bracket are mounted to a sliding cable management panel. The radius limiter structure includes a curved wall, an opening for receiving cables and a trough section for retaining cables about a radius portion.

Abstract: A method for adjusting bandwidth allocation in a cable modem termination system is provided. The method includes detecting an overflow condition at a primary transceiver of the cable modem termination system, determining whether a back-up transceiver is available in the cable modem termination system, and when the back-up transceiver is available, establishing at least one channel for the back-up transceiver to communicate over a common physical medium with at least one channel of the primary transceiver to effectively increase the bandwidth of the cable modem termination system.

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.