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Low-Cost In-Band OSNR Monitoring based on Coherent Hybrid in CO-OFDM System

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Abstract

We proposed and demonstrated a cost-effective in-band optical signal to noise ratio (OSNR) monitoring technique based on coherent hybrid in 20Gb/s CO-OFDM system. Less than 0.5dB monitoring error is achieved with 400MHz balanced photodetector (PD).

© 2015 Optical Society of America

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