DEVICE FOR MONITORING OPTICAL SIGNAL QUALITY, PARTICULARLY CONCERNED WITH COMPARING AN ANALOG-TYPE RESTORED DATA SIGNAL WITH AN INVERTING AMPLIFIED SIGNAL WITHOUT ANALYZING FRAMES OF AN OPTICAL SIGNAL

摘要

Purpose: one optical signal quality of device of a monitoring is arranged to run data through one optical signal of conversion into an electric signal, when synthesizing restored data signal, one commutation amplified signal calculates a difference, the power of a filter signal is measured to monitor the quality of optical signal, regardless of the framework of optical signal is to simply quality monitoring. Construction: the optical signal that one is received is converted to an electric signal by a photodetector (120). One clock determines that recyclable device (140) from one table clock of electrical signal detection, restore database on the clock detected. From a photoamplifier (100), an output optical signal, it is coupled to receive optical signals and is converted to an electric signal one monitoring device (160), commutation-amplification converted electrical number, commutation-amplified signal is synthesized, the signal of recovery filters composite signal, then measures a RF power from filtered signals.