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Octary QAM as Capacity Extension for Coherent UDWDM PON

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Abstract

Optical 8-QAM generation for coherent PONs with a low-complexity and flexible SOA+EAM modulator is experimentally demonstrated. 8-QAM transmission for 3Gb/s per-user bandwidth over 100km and its compatibility with high split and a channel spacing of 3GHz is verified.

© 2012 Optical Society of America

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