提出一种利用双向使用高非线性光纤(HNLF)实现同时解复用出两路信号的全光解复用方案.将复用信号和控制光的混合信号从HNLF的两端同时注入,复用信号中的某一路信号通过交叉相位调制使控制光产生蓝移或红移,在HNLF的输出端用窄带滤波器将控制光的蓝移或红移部分滤出从而同时实现两路信号解复用.理论分析了信号光和控制光在HNLF中的相互作用和解复用原理.搭建80 Gbit/s光时分复用系统,对双向使用HNLF的解复用结构进行了实验研究.在HNLF的两个输出端同时实现不同信道的无误码解复用,其中信道解复用的最大功率代价为2.6 dB. An all-optical demultiplexing scheme is proposed to realize the simultaneous demultiplexing of two signals by using two-way high-nonlinearity fiber (HNLF). The mixed signal of multiplexed signal and control light is simultaneously injected from both ends of HNLF, Signal in a signal through the cross-phase modulation of the control light blue-shift or red-shift generated in the output of the HNLF narrow-band filter control light blue shift or red shift part of the filter at the same time to achieve two-way signal demultiplexing The theory of signal light and control light in HNLF is analyzed theoretically.The 80 Gbit / s optical time-division multiplexing system is set up and the structure of HNLF demultiplexing is experimentally studied.At the same time, two HNLF The output end realizes the error-free code demultiplexing of different channels at the same time, in which the maximum power cost of channel demultiplexing is 2.6 dB.