In this work, we propose, fabricate and characterize a full duplex communication system using visible light on a single chip. Both the suspended p-n junction InGaN/GaN multiple quantum well (MQW) devices and the suspended waveguides are obtained on a GaN-on-silicon platform by wafer-level processing. Two suspended p-n junction InGaN/GaN MQW devices that can both emit and detect light simultaneously are connected using suspended waveguides to form an in-plane visible light communication (VLC) system. The light that is emitted from one suspended p-n junction InGaN/GaN MQW device can induce a current in the device located at the other end of the waveguide via in-plane light coupling, thus leading to full duplex communication using visible light. This proof-of-concept in-plane VLC system paves the way towards the implementation of a full duplex communications system operating at the same frequency using visible light on a single chip.
@article{arxiv.1608.05424,
title = {Full duplex communication using visible light},
author = {Yongchao Yang and Bingcheng Zhu and Yuanhang Li and Xumin Gao and Jialei Yuan and Hongbo Zhu and Yongjin Wang},
journal= {arXiv preprint arXiv:1608.05424},
year = {2016}
}