SYSTEMS AND METHODS FOR DETECTION OF INTRUSION IN OPTICAL FIBER

摘要

Techniques for detecting intrusion in an optical fiber can be realized as a method comprising: receiving an optical signal; demultiplexing the received optical signal into one or more payload data signals, a first control signal, and a second control signal; comparing a ratio of power levels of the first and second control signals with a threshold ratio; comparing the power level of the control first signal with a first threshold power value and the second control signal with a second threshold power value if the ratio of the power levels of the first and second control signals exceeds the threshold ratio; and generating an intrusion alarm signal, if the first signal is below the first threshold power value and the second signal is below the second threshold power value.

主权项

1. A method for detecting intrusions in optical fibers, comprising:
receiving an optical signal; demultiplexing the received optical signal into one or more payload data signals, a first control signal, and a second control signal; comparing a ratio of power levels of the first and second control signals with a threshold ratio; comparing the power level of the control first signal with a first threshold power value and the second control signal with a second threshold power value if the ratio of the power levels of the first and second control signals exceeds the threshold ratio; and generating an intrusion alarm signal, if the first signal is below the first threshold power value and the second signal is below the second threshold power value.