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Reduction of four-wave mixing induced penalty in unequally spaced WDM transmission system by using optical DPSK

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4 Author(s)
Yonenaga, K. ; NTT Opto-Electron. Labs., Kanagawa, Japan ; Aisawa, S. ; Takachio, N. ; Iwashita, K.

Optical DPSK signalling is employed in unequally spaced WDM transmission systems using dispersion-shifted fibres to reduce the penalty caused by four-wave mixing. More than 10 dB reduction in power penalty is achieved compared with the use of intensity modulation

Published in:

Electronics Letters  (Volume:32 ,  Issue: 23 )