Device and method for detecting damage to the integrity of a line for conveying an optical signal

摘要

The device for detecting an attack on the integrity of a transmission line of an optical data carrier signal comprises a transmission line having a central guiding zone comprising at least one waveguide for the transmission of an optical data carrier signal and a peripheral coaxial waveguide guiding the central area. The device also comprises a transmitter of a probe optical signal device coupled to the waveguide transmission line, an optical probe signal circulating in the peripheral waveguide transmission line, and a signal detector optical sensor coupled to the device of the transmission line waveguide which measures the power of the optical signal sensor, and detects an abnormal variation in the power of the probe optical signal. The method comprises transmitting an optical sensor signal which is injected into the peripheral waveguide transmission line, and detection of an abnormal variation of the power of the probe optical signal.