Abstract
Optical performance monitoring using asynchronous optical or electrical
sampling has gained considerable attention. Relative clock wander between data
signal and sampling source is a typical occurrence in such systems. A method for the
quantitative monitoring of the relative clock wander in asynchronous optical
under-sampling system is presented. With a series of simulations, the clock wanders
recovered using this method are in good agreement with the preset clock wanders of
different amounts and frequencies for both RZ and NRZ signals. Hence, the
reliability and robustness of the method are proven.
© 2012 Chinese Optics Letters
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