This work summarizes the progress made on a ground-to-ground 10 Gbps free space optical link. The bi-directional link consists of two static breadboard platforms that utilize low-SWaP, commercial off-the-shelf components. Each platform features a small form-factor pluggable optical transceiver and a programmable erbium-doped fiber amplifier on transmit. The free space link spans a 500 m line-of-sight distance between two academic buildings, namely Fitz Hall and Kettering Labs at the University of Dayton. Both platforms are indoors and transceive through existing building windows. The wavelength of operation is 1550 nm and the free space optical communication (FSOC) platforms have been previously evaluated for eye-safety. In this work, the authors demonstrate mechanical beam steering based upon de-centered lens technology, round-trip bit error rate measurements, and a free space transmission control protocol network for closed-loop operation including client-server messaging, auto-reconnects, receiver optimizations, and generalized self-healing capabilities.

中文翻译：

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自愈式自由空间光链路

这项工作总结了地对地 10 Gbps 自由空间光链路所取得的进展。双向链路由两个静态面包板平台组成，这些平台利用低 SWaP、商用现成组件。每个平台都具有小型可插拔光收发器和传输上的可编程掺铒光纤放大器。自由空间链路跨越两座学术建筑（即代顿大学的 Fitz Hall 和 Kettering Labs）之间 500 m 的视距。两个平台都位于室内，并通过现有建筑窗户进行收发。工作波长为 1550 nm，自由空间光通信 (FSOC) 平台之前已经过眼睛安全评估。在这项工作中，作者展示了基于偏心透镜技术的机械波束控制、往返误码率测量以及用于闭环操作的自由空间传输控制协议网络，包括客户端-服务器消息传递、自动重新连接、接收器优化和广义的自我修复功能。