Optical Analog Nonlinear Compensation for Fiber Optic Link

In this paper, the method is proposed for compensating for distortion of signals transmitted in a fiber-optic link, based on the inclusion of an analog optical in-verse nonlinear phase filter. The proposed implementation of the restoring analog optical nonlinear phase filter. The simulation results are presented, which demonstrate the ability to compensate for nonlinear distortions and restore pulse signals in a fiber-optic transmission line using the proposed filter. It is shown that the quality of the restoration largely depends on the admissibility of the linear approximation for the exponential characteristic of the nonlinear filter.