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Scalable and Gray-Coded Optical M-ary QAM Using QPSK Modulators with Binary Electronic Driving Signals

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Abstract

We present a novel square M-ary QAM transmitter using QPSK modulators driven by binary electronic signals. The proposed configuration generates Gray-coded symbol constellations and is scalable for high order optical M-ary QAM.

© 2016 Optical Society of America

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