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New method analyzing eye patterns and its application to high-speed optical transmission system

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6 Author(s)
H. Nishimoto ; Fujitsu Labs. Ltd., Kawasaki, Japan ; T. Okiyama ; N. Kuwata ; Y. Arai
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An advanced method of analyzing eye patterns is proposed which plots the eye pattern as a function of the error rate. The method is applied to high-speed optical-transmission systems and its usefulness is confirmed. Degradation of eye opening due to noise and intersymbol interference is investigated quantitatively using the 10-10 BER eye. An automatic gain-control system is evaluated from a viewpoint of eye margin, and a gain control system having an improved eye margin performance is proposed. Low-probability abnormal phenomena, such as turn-on fluctuations and mode partitioning in directly modulated distributed feedback (DFB) lasers, are observed using this method

Published in:

Journal of Lightwave Technology  (Volume:6 ,  Issue: 5 )