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METHOD AND DEVICE FOR MEASURING POLARISATION STATE AND POLARISATION MODE DISPERSION IN PHOTONIC TRANSMISSION SYSTEMS
METHOD AND DEVICE FOR MEASURING POLARISATION STATE AND POLARISATION MODE DISPERSION IN PHOTONIC TRANSMISSION SYSTEMS
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机译:光子传输系统中偏振态和偏振模色散的测量方法及装置
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摘要
The invention relates to a method and device for the evaluation of the specific values of the polarisation state of a signal transmitted within a photonic transmission system for a number of frequencies of one or more pulses extracted from the optical signal with the translation of the frequency components of the polarisation state of one or more pulses to the time domain through the use of an optical Fourier transformer, as well as for sampling, quantification and subsequent analysis. The aforementioned analysis is used to calculate the variation in the polarisation state in relation to frequency, the associated PMD vector and the DGD present in the transmitted signal. Said information can be used as a control signal for a PMD compensating device in order to improve the communication quality in the system.
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