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Benefit of SPM-based all-optical reshaper in receiver for long-haul DWDM transmission systems

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6 Author(s)
Yoshikane, N. ; KDDI R&D Labs., Saitama, Japan ; Morita, I. ; Tsuritani, T. ; Agata, A.
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The effectiveness of a self-phase modulation (SPM)-based all-optical reshaper with optically time-division-demultiplexing receiver was experimentally investigated using 42.7-Gb/s carrier-suppressed return-to-zero (CS-RZ) signals. We have confirmed that this scheme is quite effective to suppress the waveform degradation due to optical signal bandlimitation. We have demonstrated 80% spectral efficiency without using polarization demultiplexing by using the all-optical reshaper. We have also demonstrated 50-GHz-spaced 55×42.7 Gb/s signals transmission over 2500 km, using an optically bandlimited CS-RZ signal and the SPM-based all-optical reshaper in receiver without using polarization demultiplexing. A Q-factor improvement of about 1.5 dB was obtained by using the all-optical reshaper.

Published in:

Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:10 ,  Issue: 2 )

Date of Publication:

March-April 2004

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