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Digital Optical Phase Locked Loop for Real-Time Coherent Demodulation of Multilevel PSK/QAM

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Abstract

We propose a digital optical phase locked loop (DOPLL) for real-time demodulation of high-speed multilevel PSK/QAM. It was simply implemented using low-speed digital signal processor after electrical sampling to demodulate high-speed BPSK, QPSK and 16QAM.

© 2010 IEEE Communications Society, IEEE Photonics Society, OSA, Telcordia

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