Injection-locked Homodyne Detection System for Higher-order QAM Digital Coherent Transmission

Conference: ECOC 2016 - 42nd European Conference on Optical Communication
09/18/2016 - 09/22/2016 at Düsseldorf, Deutschland

Proceedings: ECOC 2016

Pages: 3Language: englishTyp: PDF

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Kasai, Keisuke; Yoshida, Masato; Hirooka, Toshihiko; Nakazawa, Masataka (Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan)

We describe recent advances in a homodyne-detection system with injection locking and its application for higher-order QAM coherent transmission. Injection locking enables precise optical carrier-phase synchronisation with a simple receiver configuration. We demonstrate a 320 Gbit/s, 256QAM-160 km transmission.