Simultaneous all-optical phase noise mitigation and automatically locked homodyne reception of an incoming QPSK data signal

作者：Mohajerin Ariaei Amirhossein; Ziyadi Morteza; Almaiman Ahmed; Cao Yinwen; Alishahi Fatemeh; Chitgarha Mohammad Reza; Fallahpour Ahmad; Yang Jeng Yuan; Bao Changjing; Liao Peicheng; Shamee Bishara; Akasaka Youichi; Sekiya Motoyoshi; Touch Joseph D; Tur Moshe; Langrock Carsten; Fejer Martin M; Willner Alan E

来源：Optics Letters, 2016, 41(20): 4779-4782.

DOI：10.1364/OL.41.004779

Simultaneous phase noise mitigation and automatic phase/frequency-locked homodyne reception is demonstrated for a 20-32 Gbaud QPSK signal. A phase quantization function is realized to squeeze the phase noise of the signal by optical wave mixing of the signal, its third-order harmonic, and their corresponding delayed variant conjugates, converting the noisy input into a noise-mitigated signal. In a simultaneous nonlinear process, the noise-mitigated signal is automatically phase-and frequency-locked with a "local" pump laser, avoiding the need for feedback or phase/frequency tracking for homodyne detection. Open eye-diagrams are obtained for in-phase and quadraturephase components of the signal and similar to 2 dB OSNR gain is achieved at BER 10(-3).

• 出版日期2016-10-15