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Experimental Compensation for FWM Induced Crosstalk with Digital Coherent Detection
Jing LIANG Katsushi IWASHITA
IEICE TRANSACTIONS on Communications
Publication Date: 2011/02/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Fiber-Optic Transmission for Communications
digital coherent detection, FWM, fiber nonlinearity, backward propagation, compensation,
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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.