基于8PSK的新型高速正交光标记交换技术

提出了一种以八相移键控(8PSK)为净荷、ASK为标记的新型高谱效率高速正交光标记交换技术,首次实现了100 Gbit/s的高速正交光标记信号的80 km传输.分析了光信噪比(OSNR)、窄带滤波效应、信道中的非线性效应对标记与净荷性能的影响,并采用平衡相关探测和多符号相位估计(MSPE)技术实现了净荷8PSK信号的接收.与传统接收方式相比,8PSK净荷在相同误码率条件下,OSNR容限提升了约3 dB.经过80 km传输,ASK标记在BER=10~(-9),时OSNR为22.8 dB,8PSK相应的OSNR为20.3 dB.

Novel high-speed orthogonal optical label switching technology based on the 8PSK modulation

Based on the 8PSK modulation with the ASK label,a novel orthogonal opticM label switching technology with high spectra efficiency and high switching speed was proposed.To our knowledge,it was the first time to realize the 100 Gbit/s orthogonal optical label signal transmission over 80 km in distance.The performances of optical label and payload were analyzed by taking into account the influence of optical SNR,narrow-band filtering and nonlinear effect in optical channels.The balanced coherent detection and multi-symbol phase estimation(MSPE)technologies were used to receive the 8PSK payload signal.Compared with the traditional receiver,the optical SNR tolerance of the 8PSK payload was increased by about 3 dB.Through the transmission distance of 80 km,the optical SNR for the ASK label at BER=10~(-9) was 22.8 dB,and the corresponding optical SNR for the 8PSK was 20.3 dB.