基于扫描反射镜结构的多路光开关  

Multi-channel optical switching based on scanning mirror instrumentation

作　　者：肖泽华 李明宇 苏国帅 何泽南 XIAO Ze-hua;LI Ming-yu;SU Guo-shuai;He Ze-nan(School of Optoelectronic Engineering,Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[1]长春理工大学光电工程学院,吉林长春130022

出　　处：《中国光学（中英文）》2023年第1期136-143,共8页Chinese Optics

基　　金：国家自然科学基金项目(No.62027825);国家重点研发计划项目(No.2020YFC2004600);吉林省自然科学基金(No.20220101130JC);山东省自然科学基金(No.ZR2019MC069);高等学校学科创新引智计划(111计划No.D21009)。

摘　　要：本文设计了一种使用嵌入式Linux可编程控制的基于扫描反射镜的光开关,在触摸显示器的UI界面上进行光纤阵列通道间的具体切换操作。此外,还可以预先设定光开关的切换顺序、停留时间。光开关光路可自动对光校准来保证每个通道的输出功率最大。本文分析了此种光开关的设计原理,通过实验测试了光开关的性能。实验结果表明:当使用单模光纤阵列时,平均插入损耗小于17 dB,相邻通道间的平均串扰低于30 dB,相邻通道间切换时间小于1.3 ms;对于多模光纤阵列,平均插入损耗小于2.4 dB。本文所设计的光开关具有低损耗、低延时、高精度、高稳定性、高重复性、通道间串扰小、人机交互良好等优点,可用于波分复用器件、多路光波导传感器等光学器件的测试。An optical switch based on a scanning mirror was designed in this paper. The optical switch is programmable and controlled by an embedded Linux system that switches between the fiber array channels on the UI of the touch display. Meanwhile, the switching sequence and residence time of the optical switch can be preset. In addition, the optical switch can be self-calibrated to obtain the maximum output power of each channel. The principle of the optical switch is analyzed and the performance of the optical switch is tested experimentally. The experimental results show that the average insertion loss is less than 17 dB for the single mode fiber array, the average crosstalk between adjacent channels is more than 30 dB, and the switching time between the adjacent channel is less than 1.3 ms. The average insertion loss is less than 2.4 dB for the multimode fiber array. It has the advantages of low loss, low delay, high precision, good stability, high repeatability, low cross-talk between the adjacent channel, and good man-machine interaction for the application of the Wavelength Division Multiplexing(WDM) and multi-channel optical waveguide sensors test device.

关 键 词：光开关 光纤阵列 嵌入式linux编程 自动校准 

分 类 号：TH744[机械工程—光学工程]