Signal waveform deterioration compensator

Details Signal waveform deterioration compensator Signal waveform deterioration compensator

2003-12-16

2010-10-12

Bello, Agustin (Department: 2613)

Optical communications

Receiver

Including postcompensation

C398S208000

Reexamination Certificate

active

07813655

ABSTRACT:
The waveform deterioration detection range is broadened and multi bit rates can be handled. A chromatic dispersion compensator (or polarization mode dispersion compensator) (102) receives a waveform-deteriorated NRZ optical signal entered through an input fiber (101) and compensates it. On the other hand, an optical detector (106) receives part of output light and a sampling circuit (A/D converter) (107) performs asynchronous sampling of received waveform intensity. A control circuit (110) calculates the nth even moment (n is 4 or more) from an obtained waveform amplitude histogram and performs control to minimize its value.

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