Simultaneous all-optical phase noise mitigation and automatically locked homodyne reception of an incoming QPSK data signal.
نویسندگان
چکیده
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 quadrature-phase components of the signal and ∼2 dB OSNR gain is achieved at BER 10-3.
منابع مشابه
Tunable Homodyne Detection using Nonlinear Optical Signal Processing to Automatically Lock a “Local” Pump Laser to an Incoming 20-to-40-Gbaud QPSK Data Signal
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عنوان ژورنال:
- Optics letters
دوره 41 20 شماره
صفحات -
تاریخ انتشار 2016