Michael GALILI  (Technical University of Denmark)

Compensation of Nonlinear Signal Distortion using Optical Phase Conjugation

Abstract
We will discuss our recent work on compensation of fibre nonlinearity using optical phase conjugation. This technique allows for some degree of compensation of optical nonlinearities accumulated during fibre transmission by implementing optical phase conjugation at a symmetric position with respect to the accumulation of nonlinearities. In this way nonlinear phase rotation accumulated during one part of the propagation may be compensated by nonlinear phase rotation affecting the conjugated field in a later part of the propagation.
We will discuss span configurations in transmission links to improve the performance of compensation. We will also discuss optical pre- or post-compensation using lumped compensation schemes as well as efforts to achieve compensation in few-mode fibre transmission.