Abstract: A patch panel including a plurality of electrical connector assemblies, wherein each of the electrical connector assemblies comprises a first jack presented on a first side of a panel frame of the patch panel and a second jack electrically linked to the first jack to form a jack pair and presented on a second side of the panel frame. Both the first jack and the second jack are presented at an angle with respect to the panel frame, and both the first jack and the second jack may be engaged using a patch cord. The first and second jack of each jack pair are at a 90-degree angle relative to one another.

Abstract: A cable exit trough defining an insert aperture for receiving a modular cable management inserts. The modular insert providing an additional cable management device such as a curved guidewall. The cable management device may alternatively be fixed to the cable exit trough. Removable snap-mounted flanges may also be included in the exit trough. The exit trough may also include an exit cover having a cover plate and a pivot plate hingedly mounted thereto for easy access to the trough.

Abstract: In a grating-assisted coupler, the mode of the first waveguide of the coupler may include some electric field in the second waveguide, with the effect that when light lasses from an input waveguide to the first waveguide, some light is launched, or injected, directly into the mode of the second waveguide. This injected light may or may not be in phase with the light subsequently coupled into the side of the second waveguide from the first waveguide via grating assistance. The grating structure is formed to ensure a desired phase relationship between the injected light and the grating coupled light: under certain conditions of relative phase, the transmission through the coupler may be increased and the bandwidth may be reduced.

Abstract: A digital radio frequency transport system that performs bi-directional simultaneous digital radio frequency distribution is provided. The transport system includes a digital host unit and at least two digital remote units coupled to the digital host unit. The bi-directional simultaneous digital radio frequency distribution is performed between the digital host unit and the at least two digital remote units.

Abstract: A fiber optic isolator device is used by fiber optic systems operating at more than one wavelength. The device may be inserted anywhere within the fiber network. The fiber optic device permits the separation of the wavelengths so that an optical isolator module can isolate a first wavelength without significantly affecting the second wavelength. This device is useful isolating a communications signal at 1.55 &mgr;m while avoiding significant losses for an optical time domain reflectometry signal, for example at 1.3 &mgr;m.

Abstract: A fiber optic telecommunications frame is provided including panels having front and rear termination locations, the panels positioned on left and right sides of the frame. The frame includes vertical access for the rear cables. The frame further includes left and right vertical cable guides for the front patch cables. The frame further includes cable storage spools for the patch cables. The frame includes a horizontal passage linking the left and right panels and the cable guides. A portion of the frame defines splice tray holders and a central passage from the splice tray holders to the rear sides of the left and right panels. From a front of each panel, access to a rear of the panel is provided by the hinged panels. Alternatively, the panels can form connector modules with front termination locations and rear connection locations for connecting to the rear cables. The modules can house couplers, such as splitters, combiners, and wave division multiplexers.

Abstract: A fiberoptic connector is constructed entirely of metal and includes structure to radiate heat. Preferably, the fiberoptic connector also includes an arrangement to indicate whether the fiberoptic connector is holding an energized optical fiber. Preferably, the heat radiating structure includes fin structure and a metal stamping projecting from the connector housing. The indicating arrangement preferably is a temperature sensitive strip secured to the housing, which changes color based upon the heat radiated by the optical fiber carried within. Methods of indicating an energized fiberoptic connector and of dissipating heat from a fiberoptic connector are provided.

Abstract: A telecommunications cable management system includes a planar base element including a planar top surface and side edges. Side elements are mounted with a mating arrangement to the base element. The side elements may include one or more of the following: upstanding wall portions, side exits extending horizontally, and downspouts. The base elements and the upstanding wall portions may have a continuous cross-section, and can be cut to the desired length for the cable management system. The downspout and side exit elements may also include multiple components wherein a central section of each can be cut to the desired width.

Abstract: A method for controlling virtual connections between endpoints over a unidirectional ring network. The network includes a number of network elements coupled together to form segments of the ring network. The method receives a request to create a virtual connection between first and second endpoints on the ring network. The method identifies the segments of the ring network that would be affected by the addition of the connection between the first and second endpoints. Further, the method retrieves data that represents the currently allocated capacity for each affected segment. For each affected segment, the method determines whether adding the requested virtual connection would exceed the capacity for the segment. The method transmits signals over the ring to establish the virtual connection when adding the virtual connection does not exceed the capacity for any of the affected segments.

Abstract: Apparatus and method for increasing the bandwidth of an optocoupler includes cascode coupling the optocoupler driver transistor with a buffer so as to reduce voltage variations across the driver transistor.

Abstract: Telecommunications systems are provided which include telecommunications equipment, multi-pair connectors and cables, and management devices for grooming the conductors of the connectors and cables for efficient use of the conductor pairs between equipment. A further management device provides cross-connect fields for the conductor pairs of the system. A chassis may house the grooming device, any cross-connect device, and possibly a POTS splitter device. The grooming and cross-connects may be manually controlled, or electronically controlled, including locally or remotely.

Abstract: A mounting apparatus having first and second blocks securable within a housing. The first block has first and second grooves for respectively receiving a first edge of a first circuit board and a first edge of a second circuit board such that the first and second circuit boards are aligned with each other and are spaced apart. The second block has a groove for receiving a second edge of the first circuit board that is perpendicular to the first edge of the first circuit board and a surface to which the second circuit board is attached adjacent a second edge of the second circuit board that is perpendicular to the first edge of the second circuit board.

Abstract: A fault associated with a communication medium is analyzed by correlating a first set of information indicative of echo associated with the communication medium with a second set of information indicative of echo. The fault is characterized based on the correlation between the first set of information and the second set of information. The first set of information and the second set of information can include echo canceller coefficients generated by an echo canceller coupled to the communication medium.

Abstract: A fault associated with a communication medium is analyzed by correlating a first set of information indicative of echo associated with the communication medium with a second set of information indicative of echo. The fault is characterized based on the correlation between the first set of information and the second set of information. The first set of information and the second set of information can include echo canceller coefficients generated by an echo canceller coupled to the communication medium.

Abstract: A distortion monitor for a non-linear device is provided. The control circuit includes an input coupleable to receive a signal from the non-linear device and a first frequency monitor coupled to the input. The frequency monitor monitors the level of one of even and odd order distortion at a first frequency and creates a first signal indicative of the level of the distortion without the use of a pilot tone.

Abstract: A system and method are provided for writing refractive index structures, such as gratings, in an optical waveguide. There is no requirement for structures having interferometric stability of the control elements. The method includes providing first and second light beams, the first beam having a first polarization state and a first wavevector, the second beam having a second polarization state different from the first polarization state, and a second wavevector different from the first wavevector. The method also includes illuminating a diffractive optical element by at least a part of the first beam and a part of the second beam so as to diffract parts of the first and second beams, and positioning the medium in relation to the diffractive element so as to illuminate the first part of the medium by the diffracted parts of the first and second beams.

Abstract: The present disclosure in part relates to an optical fiber cable management panel, which includes a drawer assembly including a chassis and a drawer the drawer is slidably mounted within the chassis. A cable radius limiter is slidably mounted to the drawer assembly. The panel include a release lock, which allows sliding movement of the limiter relative to the without movement of the drawer relative to the chassis.

Abstract: A system and method for automatically and uniquely assigning identification codes to a plurality of slave processors. A master processor having communication port is linked to a first slave processor, which, itself, has first and second communication ports. The first communication port is used in support of the aforementioned link to the computer. A second slave processor, also having first and second serial ports, is linked by its first communication port to the second communication port of the first slave processor. The slave processors are programmed to read designated pins on their first communication ports. The read values determine the identification code of each processor. Thereafter, each slave processor outputs to its second port a value one greater than the value read from its first port. Therefore, each slave processor assigns itself a particular identification code and directs the next slave processor to assign itself an identification code one greater.

Abstract: The present disclosure relates to a jack assembly including a jack mount having a front side and a rear side. A jack of the assembly is adapted to be slidably mounted in a jack receiving region of the jack mount. The jack assembly also includes a plurality of cross-connect contacts, and a rear interface assembly. The rear interface assembly includes a dielectric cover piece and a plurality of rear connectors that project outward from the dielectric cover piece.