Analysis of nonlinearity mitigation using phase-sensitive optical parametric amplifiers
Journal article, 2019

Phase-sensitive optical parametric amplifiers (PSAs) can provide low-noise optical amplification while simultaneously mitigating nonlinear distortions caused by the Kerr effect. However, nonlinearity mitigation using PSAs is affected by link parameters, and imperfect link design results in residual nonlinear distortions. In this paper, we use first-order perturbation theory to describe these residual nonlinear distortions, and develop a way to mitigate them using a modified third-order Volterra nonlinear equalizer (VNLE) in the receiver. Using numerical simulations, we show that our proposed VNLE reduces the residual nonlinear distortions in links using in-line PSAs for several combinations of symbol rates and modulation formats, and can increase the maximum transmission distance by up to 80%. We also perform a proof-of-concept experiment and confirm that our modified VNLE can mitigate the residual nonlinear distortions on a 10-Gbaud 16QAM signal after transmission through a 10×80-km link with in-line PSAs.

Author

Benjamin Foo

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Infinera Corporation

Magnus Karlsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Kovendhan Vijayan

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Mikael Mazur

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Peter Andrekson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Optics Express

1094-4087 (ISSN)

Vol. 27 22 31926-31941

Subject Categories

Telecommunications

Communication Systems

DOI

10.1364/OE.27.031926

More information

Latest update

11/13/2019