Abstract: Methods and systems for controlling optical power attenuation are provided. A method comprises periodically measuring an optical power of an optical signal received by an optical receiver and periodically measuring a first attenuation control signal voltage. When the optical power measurement is outside a target power range, the method continues with calculating a target voltage necessary to maintain the optical power measurements at a target power level; calculating a second attenuation control signal based on the target voltage, wherein the second attenuation control signal is calculated to provide an over-damped transient response that maintains the second attenuation control signal within a usable range of a variable optical power attenuator; applying a second attenuation control signal voltage based on the second attenuation control signal to the variable optical power attenuator; and adjusting attenuation of the optical signal based on the second attenuation control signal voltage.

Abstract: The present disclosure relates to a telecommunications distribution cabinet having a cabinet housing in which a first swing frame and a second swing frame are pivotably mounted.

Abstract: A cabinet is provided for managing the connections between a feeder cable and a distribution cable wherein the distribution cable is a blown optical fiber. The cabinet includes shelves for holding splices between the feeder cable and the distribution cable. The shelves also include microduct holders for holding each of the microducts associated with the distribution cable.

Abstract: The present invention relates to methods and systems for minimizing alien crosstalk between connectors. Specifically, the methods and systems relate to isolation and compensation techniques for minimizing alien crosstalk between connectors for use with high-speed data cabling. A frame can be configured to receive a number of connectors. Shield structures may be positioned to isolate at least a subset of the connectors from one another. The connectors can be positioned to move at least a subset of the connectors away from alignment with a common plane. A signal compensator may be configured to adjust a data signal to compensate for alien crosstalk. The connectors are configured to efficiently and accurately propagate high-speed data signals by, among other functions, minimizing alien crosstalk.

Abstract: Systems and methods for Venturi fan-assisted cooling of electrical equipment are provided. In one embodiment, a cooling unit for an enclosure housing electronics is provided. The cooling unit comprises: a fan shroud having at least one electrical fan; and a Venturi chamber having a first inlet for receiving a heated airflow from a heatsink, a second inlet for receiving an airflow from a surrounding environment, and an outlet coupled to the fan shroud, the fan drawing air from the Venturi chamber via the outlet when the fan is on. The Venturi chamber comprises a wall for directing the airflow air from the surrounding environment in from the second inlet and across the heated airflow from the heatsink in a manner to as to draw the heated airflow through the heatsink using a Venturi effect, when the fan is on.

Abstract: A chassis and associated telecommunication circuit card are disclosed. The chassis has heat dissipation structures and may accommodate a high density of the circuitry cards. Embodiments may include one surface with one or more ridges for rigidity and ventilation and fin slots for receiving circuit card guide fins. Embodiments may include a surface with knockouts for receiving circuit card guides. Embodiments may also include multiple bracket hole patterns for mounting brackets for different racks or for a single multi-rack bracket having more than one mounting hole pattern. 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 structures of the chassis and includes some components chosen for low-power consumption or reduced flammability.

Abstract: An interface converter is provided for mechanically and optically coupling a fiber optic connector with an adapter port. In a preferred embodiment, the interface converter attaches to an SC fiber optic connector and together form a converted fiber optic connector compatible with the adapter port. In certain embodiments, a retractable release sleeve may be removed from the SC fiber optic connector prior to attaching the interface converter. In certain embodiments, the interface converter may be inserted into the adapter port prior to being attached to the SC fiber optic connector.

Abstract: A fiber distribution hub includes a swing frame chassis pivotally mounted within an enclosure. The swing frame chassis includes a splitter mounting location at which optical splitters can be mounted and an optical termination field. The optical termination field includes multiple fiber optic adapters.

Abstract: A fiber distribution system includes one or more fiber distribution hubs (FDHs) that provide an interface at a termination panel between incoming fibers routed from a central office and outgoing fibers routed to network subscribers. Termination modules can be incrementally added to the termination panel. The FDH can include one or more optical splitter modules that split an optical signal into two or more signals. The optical splitter modules can be incrementally added along with one or more storage modules. The subscriber termination panel, optical splitters, and storage modules can be provided on a swing frame.

Abstract: A hinge comprises a first member having a protrusion, wherein the protrusion has a cam profile shape; and a second member having a cavity operable to receive the protrusion, wherein a cam profile shape of the cavity corresponds to the cam profile shape of the protrusion such that, when the protrusion is in a first position, a gap is present between the second member and the protrusion and, when the protrusion is in a second position, substantially no gap is present between the second member and the protrusion.

Abstract: A fiber distribution system includes one or more fiber distribution hubs (FDHs) that provide interface at a splice panel and/or a termination panel between incoming fibers routed from a central office and outgoing fibers routed to network subscribers. Splice trays, termination modules, splitter modules, and storage modules can be incrementally added to the FDH. The termination modules, optical splitters, and storage modules can be provided on a swing frame chassis within the FDH cabinet.

Abstract: An adapter panel arrangement including a chassis and a panel of adapters. The adapters defining open rearward cable connections and open forward cable connections of the panel arrangement. The adapters being arranged in arrays that slide independently of other adapter arrays to provide access to the open rearward and open forward cable connections.

Abstract: A weather resistant variable enclosure frame configured to enclose at least one electronic component is provided. The weather resistant variable enclosure frame includes a top and bottom endplate each having a channel on at least one side surface, and at least one cut-to-length supporting structure attached to the top endplate and the bottom endplate to offset the top endplate from the bottom endplate. The supporting structure has at least one channel that extends the length of the supporting structure. At least one opening is formed by the endplates and the supporting structure, so that the channels in the endplates and the at least one supporting structure combine to form at least one continuous channel configured to hold at least one respective continuous seal. When panels are attached to cover the at least one opening, a weather resistant enclosure is formed.

Abstract: A cable management panel including a sliding drawer. The drawer including a bottom tray that pivots to provide access to cable management devices mounted on the tray. The drawer including a connection arrangement that locks the tray in both of a non-pivoted position and a pivoted position.

Abstract: A patch cord including a connector attached to an end of a multi-pair cable. The connector including a threaded arrangement that engages a jacket of the multi-pair cable to secure the connector relative to the end of the multi-pair cable.

Abstract: The present disclosure relates to a rack for telecommunications equipment. The rack includes a frame defining a bay opening sized and shaped for receiving a plurality of jack modules. The rack also includes a first set of cable management brackets that define a first vertical channel arranged and configured for receiving and vertically managing a plurality of cross-connect cables. Each of the cable management brackets includes a pivot portion that is pivotally movable relative to the frame. The pivot portions are pivotally movable between first positions in which the pivot portions extend partially across a front of the bay opening, and second positions in which the pivot portions are generally offset from the front of the bay opening. The present disclosure also relates to a rack for telecommunications equipment that includes rear cable management structure that defines a plurality of vertical channels along a back side of the rack.

Abstract: A fiber optic telecommunications device includes an enclosure defining an interior. A first fiber optic adapter is provided at the enclosure. A spool is provided at an exterior of the enclosure. A fiber optic cable, which includes a first optical fiber, is wrapped around the spool. A first fiber optic connector is mounted at a first end of the first optical fiber. The first end of the first optical fiber is positioned within the interior of the enclosure. The first fiber optic connector is inserted within the first fiber optic adapter. The enclosure and the spool are configured to rotate in unison about a common axis when the fiber optic cable is unwound from the spool.

Abstract: A fiber access terminal includes a drop cable side and a distribution cable side. The sides are separated by a frame to which a variety of cable management and cable connections components may be mounted. Optical fibers are routed from drop and distribution cables through a plurality of routing paths to splice trays for connection to other optical fibers. The terminal includes a base and a dome cover mounted to the base defining an enclosed interior. Passageways between the base and the dome cover are closed by removable covers to limit moisture and animals from accessing an interior of the dome cover. A tether connects the removable covers to the frame. The removable covers include one or more break out regions configured for being removed to receive one or more cables.

Abstract: A cable management panel including a chassis, a drawer, and a rear latch arrangement. The rear latch arrangement including a latch having a free tab end. The free tab end engaging the front edge of a top wall of the chassis to prevent inadvertent closing movement of the drawer relative to the chassis.

Abstract: A fiber distribution hub includes a cabinet having a panel with an adjustable plate disposed on the back panel. The adjustable plate is selectively moveable between a first position on the back panel and a second position on the back panel to provide space adjacent to cable openings in the cabinet.