Sprint Communications Comapny L.p.

Sprint Spectrum L.p.

Francis R Yarkosky

David W Williams

Douglas Lew Richards

William Chaklam Szeto

An arrangement and a method for testing a telecommunications circuit over Dense Wavelength Division Multiplexing (DWDM). A transmitter, which is optically coupled to the circuit, transmits a test-drive signal on the circuit. Through a network, a performance of the circuit is monitored at points along the circuit based on the transmitted test-drive signal.

Arrangement and method for testing fiber optic telecommunications circuits over dense wavelength division multiplexing (DWDM)

The illustrated fiber management assembly includes a rectangular case configured to fit between bays of equipment. Fiber connected to the equipment bays enters the case through a top inlet opening and exits the case through one of two outlet openings extending along respective sides of the case, with any excess fiber being located within the storage chamber defined by the case. Adjacent the inlet opening of the case is a clamp that is compressible around the fiber to relieve axial loading on the fiber. The management assembly is provided with a slack take-up mechanism that is configured to support excess fiber in a looped arrangement within the storage chamber. The slack take-up mechanism includes a plurality of spool assemblies adjustably positioned along the length of the storage chamber. Supported for sliding movement along the length of each outlet opening is at least one fiber router designed to support the fiber exiting the storage chamber and limit bending of the fiber as it is directed to the equipment bay.

Inter-bay fiber management assembly

A system of bidirectional transmission of optical signals over an optical fiber in a telecommunications network includes a transceiver unit having an optical signal transmitter and receiver coupled with each end of the fiber, and a signal monitor for detecting a predetermined deviation in the signal strength directed toward each receiver from the fiber. This predetermined deviation is indicative of a signal path disruption in the fiber resulting in at least partial signal reflection of the signals from a transmitter toward the receiver of the same set.

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Kansas City, MO, United States of America

Francis R Yarkosky