Experimental Compensation for FWM Induced Crosstalk with Digital Coherent Detection

Jing LIANG
Katsushi IWASHITA

Publication
IEICE TRANSACTIONS on Communications   Vol.E94-B    No.2    pp.558-561
Publication Date: 2011/02/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.558
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Fiber-Optic Transmission for Communications
Keyword: 
digital coherent detection,  FWM,  fiber nonlinearity,  backward propagation,  compensation,  

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Summary: 
Four-wave mixing (FWM) compensation using digital coherent detection is experimentally demonstrated. Two lights and the induced FWM components are combined with phase-locked local oscillator lights and received individually. The received signals are combined electrically and the signal-to-FWM crosstalk ratio is improved to more than 30 dB by backward propagation.