Automatic power shut-down arrangement for optical line systems

Details Automatic power shut-down arrangement for optical line systems Automatic power shut-down arrangement for optical line systems

H - Electricity

04

B

H04B 10/12 (2006.01) H04B 10/08 (2006.01)

Patent

CA 2287656

An arrangement is provided which detects the loss of a high power signal in an optical transmission path and the loss of supervisory signal power and, in response thereto, automatically invokes a procedure which causes an optical signal source connected to the fiber to reduce the power level at which it is transmitting optical signals over the fiber to a safe level. More specifically, reduction of optical signal power supplied by an upstream network element by a prescribed amount is achieved by automatically controlling the output power level of the upstream network element in response to the detection of both loss of signal power and loss of supervisory signal power at a downstream network element as a result of a fiber cut, open connector, or other potentially hazardous discontinuity.

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