A Parallel Algorithm for Digital Post Compensation in Optical Fiber Communications

Using the electrical engineering notation, we re-derive a formulation for a recently proposed parallel algorithm for the simulation of pulse propagation through a single mode optical fiber. The meaning of the change of variables in the original derivation has been explained, the performance of the re-derived parallel algorithm is probed when used in digital post compensation of the dispersive and nonlinear fiber channel, for cases with and without DCF respectively. It is found that this computation performance is superior to that of the symmetrized SSF method with adaptive step-size selection rule which leads to consistent local accuracy in terms of shortening the processing delay or saving the required processing memory.