Department of Photonics, Graduate Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan.
Department of Photonics & Graduate Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan.
Sensors (Basel). 2023 May 13;23(10):4725. doi: 10.3390/s23104725.
In this work, we put forward and demonstrate a bi-direction free-space visible light communication (VLC) system supporting multiple moveable receivers (Rxs) using a light-diffusing optical fiber (LDOF). The downlink (DL) signal is launched from a head-end or central office (CO) far away to the LDOF at the client side via a free-space transmission. When the DL signal is launched to the LDOF, which acts as an optical antenna to re-transmit the DL signal to different moveable Rxs. The uplink (UL) signal is sent via the LDOF towards the CO. In a proof-of-concept demonstration, the LDOF is 100 cm long, and the free space VLC transmission between the CO and the LDOF is 100 cm. 210 Mbit/s DL and 850 Mbit/s UL transmissions meet the pre-forward-error-correction bit error rate (pre-FEC BER = 3.8 × 10) threshold.
在这项工作中，我们提出并展示了一种使用扩散光纤（LDOF）支持多个可移动接收器（Rx）的双向自由空间可见光通信（VLC）系统。下行链路（DL）信号从远离客户端的前端或中心局（CO）通过自由空间传输发送到 LDOF。当 DL 信号发送到 LDOF 时，它充当光学天线，将 DL 信号重新传输到不同的可移动 Rx。上行链路（UL）信号通过 LDOF 发送到 CO。在概念验证演示中，LDOF 长 100cm，CO 和 LDOF 之间的自由空间 VLC 传输距离为 100cm。210Mbps 的 DL 和 850Mbps 的 UL 传输符合前向纠错比特误码率（pre-FEC BER=3.8×10）阈值。
