METHOD AND DEVICE FOR MEASURING POLARISATION STATE AND POLARISATION MODE DISPERSION IN PHOTONIC TRANSMISSION SYSTEMS

摘要

The invention relates to a method and device for the evaluation of thespecific values of the polarisation state of a signal transmitted within aphotonic transmission system for a number of frequencies of one or more pulsesextracted from the optical signal with the translation of the frequencycomponents of the polarisation state of one or more pulses to the time domainthrough the use of an optical Fourier transformer, as well as for sampling,quantification and subsequent analysis. The aforementioned analysis is used tocalculate the variation in the polarisation state in relation to frequency,the associated PMD vector and the DGD present in the transmitted signal. Saidinformation can be used as a control signal for a PMD compensating device inorder to improve the communication quality in the system.