Bi-Directional Free-Space Visible Light Communication Supporting Multiple Moveable Clients Using Light Diffusing Optical Fiber

Yun-Han Chang; Chi-Wai Chow; Yuan-Zeng Lin; Yin-He Jian; Chih-Chun Wang; Yang Liu; Chien-Hung Yeh

doi:10.3390/s23104725

Bi-Directional Free-Space Visible Light Communication Supporting Multiple Moveable Clients Using Light Diffusing Optical Fiber

Sensors (Basel). 2023 May 13;23(10):4725. doi: 10.3390/s23104725.

Authors

Yun-Han Chang^{1

2}, Chi-Wai Chow^{1

2}, Yuan-Zeng Lin^{1

2}, Yin-He Jian^{1

2}, Chih-Chun Wang^{1

2}, Yang Liu³, Chien-Hung Yeh⁴

Affiliations

¹ Department of Photonics, Graduate Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan.
² Department of Photonics & Graduate Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan.
³ Philips Electronics Ltd., N.T., Hong Kong, China.
⁴ Department of Photonics, Feng Chia University, Taichung 40724, Taiwan.

Abstract

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^-3) threshold.

Keywords: laser diode (LD); light diffusing optical fiber (LDOF); light-diffusing optical fiber (LDOF); optical wireless communication (OWC); visible light communication (VLC).

Abstract

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