Phase regeneration of DPSK signals in a highly nonlinear lead-silicate W-type fiber

• DOI: 10.1364/oe.20.027419
• Publication Date: 2012-11-26T21:33:33Z
• Authors: Mohamed A. Ettabib; Francesca Parmigiani; Xian Feng; Liam Jones; Joseph Kakande; Radan Slavík; Francesco Poletti; Giorgio M. Ponzo; Jindan Shi; Marco N. Petrovich; Wei H. Loh; Periklis Petropou...; David J. Richardson
• Keywords: Amplifiers, Electronic; Telecommunications; 0202 electrical engineering, electronic engineering, information engineering; Fiber Optic Technology; Signal Processing, Computer-Assisted; Equipment Design; 02 engineering and technology

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.