Multifunctional Ultraviolet-C Micro-LED With Monolithically Integrated Photodetector for Optical Wireless Communication

IF 4.8 1区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Lightwave Technology Pub Date : 2021-09-24 DOI:10.1109/JLT.2021.3115167

Xinyi Shan;Shijie Zhu;Pengjiang Qiu;Zeyuan Qian;Runze Lin;Zhou Wang;Xugao Cui;Ran Liu;Pengfei Tian

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引用次数: 7

Abstract

In this paper, a multifunctional ultraviolet-C (UVC) micro-LED with monolithically integrated photodetector (PD) based on AlGaN multiple quantum wells (MQWs) was fabricated. We designed and integrated UVC LED with sizes of 40 and 300

$\mu$

m emitted at 277 nm on a single chip which also serve functions as PDs and further studied the performance of on-chip real-time photodetection. The photocurrent generated from one LED can well reflect the light output power of the adjacent LED. Furthermore, both 40

$\mu$

m UVC micro-LED and 300

$\mu$

m UVC LED play important roles in high speed UVC communication with record bandwidths of 497.58 MHz for 40

$\mu$

m micro-LED and 467.38 MHz for 300

$\mu$

m LED, offering each other as backup light source in high speed UVC communication. And the data transmission rates of 1.6 Gbps for 40

$\mu$

m micro-LED and 1.21 Gbps for 300

$\mu$

m LED over 1 m link based on the 16-ary quadrature amplitude modulation orthogonal frequency division multiplexing (16-QAM-OFDM) with pre-equalization were achieved. The multifunctional UVC micro-LED monolithically integrated PD, without the need for an external PD to monitor the fluctuations in the luminescence, providing high stability for diverse applications, such as spatial wireless communication for 6 G communication.

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无线光通信用单片集成光电探测器多功能紫外- c微型led

本文制备了一种基于AlGaN多量子阱（MQW）的具有单片集成光电探测器（PD）的多功能紫外线-C（UVC）微LED。我们在单个芯片上设计并集成了尺寸分别为40和300$\mu$m的UVC LED，该LED在277nm处发射，也用作PD，并进一步研究了片上实时光电检测的性能。一个LED产生的光电流可以很好地反映相邻LED的光输出功率。此外，40$\mu$m UVC微型LED和300$\mu$m UVC LED在高速UVC通信中都发挥着重要作用，40$\ mu$m微型LED的创纪录带宽为497.58MHz，300$\ mu$m LED的创记录带宽为467.38MHz，在高速UVC通信中互为备用光源。基于带预均衡的16进制正交调幅正交频分复用（16-QAM-OFDM），在1m链路上实现了40$\mu$m微型LED 1.6Gbps和300$\mu$m LED 1.21Gbps的数据传输速率。多功能UVC微型LED单片集成PD，无需外部PD来监测发光的波动，为各种应用提供了高稳定性，例如用于6G通信的空间无线通信。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Lightwave Technology 工程技术-工程：电子与电气

CiteScore

9.40

自引率

14.90%

发文量

936

审稿时长

3.9 months

期刊介绍： The Journal of Lightwave Technology is comprised of original contributions, both regular papers and letters, covering work in all aspects of optical guided-wave science, technology, and engineering. Manuscripts are solicited which report original theoretical and/or experimental results which advance the technological base of guided-wave technology. Tutorial and review papers are by invitation only. Topics of interest include the following: fiber and cable technologies, active and passive guided-wave componentry (light sources, detectors, repeaters, switches, fiber sensors, etc.); integrated optics and optoelectronics; and systems, subsystems, new applications and unique field trials. System oriented manuscripts should be concerned with systems which perform a function not previously available, out-perform previously established systems, or represent enhancements in the state of the art in general.