Device for monitoring the operation of a fibre optic link and receiver comprising such a device

摘要

The subject of the invention is a device for monitoring the operation of a fibre optic link for information transmission. This device periodically samples the amplitude of the signal received and compares it with one or more previous values. The detection of a fast variation, above a certain threshold, constitutes an indication of disturbance to the operation of the link. Application to the monitoring of the security of optical transmissions.