提出了一种新颖的双向波分复用网络结构,由多个分插复用器通过单模光纤连接而成。其中,分插复用器是基于声光效应和光纤布拉格光栅的反射特性制成的。由理论分析和实验得到的结果表明,该器件可实现一定数量信道的光信号的双向分插复用。这种双向波分复用光网络可按要求进行设计,使具有某种特征波长的光信号在设定位置的分插复用器中实现分插复用,使其按所设计的光路在波分复用网络中传输。 A novel bidirectional WDM network structure is proposed, which is composed of a plurality of add / drop multiplexers connected by a single mode optical fiber. Among them, the add / drop multiplexer is made based on the acousto-optic effect and the reflection characteristic of the fiber Bragg grating. The theoretical analysis and experimental results show that the device can achieve a certain number of channels of optical signal bidirectional add-drop multiplexing. The bidirectional WDM optical network can be designed according to the requirements so that the optical signal with a certain characteristic wavelength can be inserted and multiplexed in the add / drop multiplexer at the set position so as to make the optical wave in the designed wave Sub-multiplexing network transmission.