Zhang Shuanglu, Okamoto Atsushi, Abe Yuta, Watanabe Ryo, Tomita Akihisa, Soma Daiki, Wakayama Yuta, Tsuritani Takehiro
Opt Express. 2021 Nov 22;29(24):39096-39106. doi: 10.1364/OE.443033.
To realize simplified cost-efficient optical networks with routing flexibility and scaling potential, a spatial-light-modulator-based optical-fiber joint switch for few-mode multicore fibers is proposed herein, which can route all spatial channels together as a unit. Numerical simulations and experiments were performed, and the results show that the signal paths for a 6-mode 19-core fiber can be simultaneously switched to the target output ports using the proposed method, and the mode-field patterns of the diffracted light can be maintained after joint switching. Further, the maximum port crosstalk can be reduced considerably from -11.6 to -25.1 dB by changing the position of the output port in the proposed method.
为了实现具有路由灵活性和扩展潜力的简化型高性价比光网络，本文提出了一种基于空间光调制器的少模多芯光纤光纤维联合交换机，它可以将所有空间通道作为一个单元一起进行路由。进行了数值模拟和实验，结果表明，使用所提出的方法，一根6模19芯光纤的信号路径可以同时切换到目标输出端口，并且联合切换后衍射光的模场图案可以得到保持。此外，在所提出的方法中，通过改变输出端口的位置，最大端口串扰可以从-11.6 dB大幅降低到-25.1 dB。
