Novel real-time homodyne coherent receiver using a feed-forward based carrier extraction scheme for phase modulated signals

作者：Ibrahim Selwan K^*; Sygletos Stylianos; Weerasuriya Ruwan; Ellis Andrew D

来源：Optics Express, 2011, 19(9): 8320-8326.

DOI：10.1364/OE.19.008320

We report a novel real-time homodyne coherent receiver based on a DPSK optical-electrical-optical (OEO) regenerator used to extract a carrier from carrier-less phase modulated signals based on feed-forward based modulation stripping. The performance of this non-DSP based coherent receiver was evaluated for 10.66Gbit/s BPSK signals. Self-homodyne coherent detection and homodyne detection with an injection-locked local oscillator laser was demonstrated. The performance was evaluated by measuring the electrical signal-to-noise (SNR) and recording the eye diagrams. Using injection-locking for the LO improves the performance and enables homodyne detection with optical injection-locking to operate with carrier-less BPSK signals without the need for polarization multiplexed pilot-tones.

• 出版日期2011-4-25