We study the post nonlinearity compensation of differential-phase-shift-keying links employing pure soliton transmissions over a large number of spans.In addition to the distributed amplified spontaneous noises added ...We study the post nonlinearity compensation of differential-phase-shift-keying links employing pure soliton transmissions over a large number of spans.In addition to the distributed amplified spontaneous noises added by the inline amplifiers,lumped intensity noises initially resulting from transmitter imperfections are also considered.Based on the soliton perturbation theory,we derive simple and accurate formulae for the optimum operating phase,the variance of the residue phase noise,and the phase Q-factor improvement of the post nonlinearity compensation.We validate these derived formulae by comparing their results with numerical simulations built upon the split-step Fourier method.展开更多
基金Supported by the National Natural Science Foundation of China under Grants Nos 61201425,11173015the National Basic Research Program of China under Grant No 2011CBA02the National High-Tech R&D Program of China under Grant No 2011AA010204.
文摘We study the post nonlinearity compensation of differential-phase-shift-keying links employing pure soliton transmissions over a large number of spans.In addition to the distributed amplified spontaneous noises added by the inline amplifiers,lumped intensity noises initially resulting from transmitter imperfections are also considered.Based on the soliton perturbation theory,we derive simple and accurate formulae for the optimum operating phase,the variance of the residue phase noise,and the phase Q-factor improvement of the post nonlinearity compensation.We validate these derived formulae by comparing their results with numerical simulations built upon the split-step Fourier method.
