Simultaneous light emission and detection of InGaN/GaN multiple quantum well diodes for in-plane visible light communication

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• 作者：Yongjin Wang^a ; ; Yin Xu^a ; Yongchao Yang^a ; Xumin Gao^a ; Bingcheng Zhu^a ; Wei Cai^a ; Jialei Yuan^a ; Rong Zhang^b ; Hongbo Zhu^a
• 关键词：InGaN/GaN multiple quantum well diode ; In-plane visible light communication ; Full-duplex communication ; GaN-on-silicon platform ; Waveguide ; Microfabrication
• 刊名：Optics Communications
• 出版年：2017
• 出版时间：15 March 2017
• 年：2017
• 卷：387
• 期：Complete
• 页码：440-445
• 全文大小：1161 K
• 卷排序：387

文摘

Suspended MQWDs are used as transmitters and receivers simultaneously, and suspended waveguides are used for light coupling to create an in-plane visible light communication system. Both the p-GaN and InGaN/GaN MQW layers on top of the waveguides are removed to generate continuous waveguide architecture, leading to an improved light efficiency from 18% to 22%. The MQWDs can achieve simultaneous light emission and photodetection when the devices operate either under emitter mode or detector mode. When the in-plane VLC system operates in full-duplex mode, the superposition behavior occurs when both transmitted and received signals happen at the same time and at the same frequency.