Adaptive digital backward propagation based on variance of intensity noise

作者：Jiang Lin; Yan Lianshan^*; Chen Zhiyu; Yi Anlin; Pan Yan; Pan Wei; Luo Bin; Li Guifang

来源：Chinese Optics Letters, 2015, 13(11): 110602.

DOI：10.3788/COL201513.110602

An adaptive digital backward propagation (ADBP) algorithm is proposed and experimentally demonstrated based on the variance of the intensity noise. The proposed algorithm can self-determine the unknown nonlinear coefficient gamma and the nonlinear compensation parameter xi. Compared to the scheme based on the variance of phase noise, the proposed algorithm can avoid the repeated frequency offset compensation and carrier phase recovery. The simulation results show that the system's performance compensated by the proposed method is comparable to conventional ADBP schemes. The performance of the proposed algorithm is simulated in 40/112 Gb/s polarization-division multiplexing (PDM)-quadrature phase-shift keying (QPSK) and 224 Gb/s PDM-16-quadrature amplitude modulation (QAM) systems and further experimentally verified in a 40 Gb/s PDM-QPSK coherent optical communication system over a 720 km single-mode fiber.

• 出版日期2015-11-10
• 单位西南交通大学