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Phase regeneration of DPSK signals in a highly nonlinear lead-silicate W-type fiber
Mohamed A Ettabib1, Francesca Parmigiani, Xian Feng
1Optoelectronic Research Centre, University of Southampton, Southampton, UK. mae206@orc.soton.ac.uk
Abstract:
We experimentally demonstrate phase regeneration of a 40-Gb/s differential phase shift keying (DPSK) signal in a 1.7-m long highly nonlinear lead silicate W-type fiber using a degenerate two-pump phase-sensitive amplifier (PSA). Results show an improvement in the Error Vector Magnitude (EVM) and a reduction of almost a factor of 2 in the phase noise of the signal after regeneration for various noise levels at the input.
