用于双向自由空间光链路的MEMS跟踪振镜网络
Abstract
We report on a bidirectional free-space optical system that is capable of automatic connection and tracking of an optical link between two nodes. A piezoelectric micro-electro-mechanical systems (MEMS) optical scanner is used to steer a laser beam of two wavelengths superposed to visually present a communication zone, to search for the position of the remote node by means of the retro-reflector optics, and to transmit the data between the nodes. A feedback system is developed to control the MEMS scanner to dynamically establish the optical link within a 10-ms transition time and to keep track of the moving node.
我们报告一个双向自由空间光学系统,能够自动连接和跟踪两个节点之间的光链路。 使用压电微机电系统(MEMS)光学扫描器来引导叠加的两个波长的激光束以在视觉上呈现通信区域,借助后向反射器光学器件来搜索远程节点的位置,以及 在节点之间传输数据。 开发了一个反馈系统来控制MEMS扫描仪在10ms的转换时间内动态地建立光链路并跟踪移动节点。
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