3.8 Gb&#x002F;s PAM-4 UOWC System Over a 2-m Underwater Channel Enabled by a Single-Pixel 175-&#x03BC;m GaN-Based Mini-LED

Chao Zhang; Zixian Wei; Xueyang Li; Yibin Li; Lei Wang; Lai Wang; H. Y. Fu; Yanfu Yang

doi:10.1109/JPHOT.2022.3145188

IEEE Photonics Journal (Jan 2022)

3.8 Gb/s PAM-4 UOWC System Over a 2-m Underwater Channel Enabled by a Single-Pixel 175-μm GaN-Based Mini-LED

Chao Zhang,
Zixian Wei,
Xueyang Li,
Yibin Li,
Lei Wang,
Lai Wang,
H. Y. Fu,
Yanfu Yang

Affiliations

Chao Zhang: Department of Electronic and Information Engineering, Harbin Institute of Technology, Shenzhen, Shenzhen, Guangdong, China
Zixian Wei: ORCiD; Tsinghua Shenzhen International Graduate School and Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen, Guangdong, China
Xueyang Li: ORCiD; Photonic Systems Group, Department of Electrical and Computer Engineering, McGill University, Montréal, QC, Canada
Yibin Li: Tsinghua Shenzhen International Graduate School and Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen, Guangdong, China
Lei Wang: Department of Electronic Engineering, Tsinghua University, Beijing, China
Lai Wang: ORCiD; Department of Electronic Engineering, Tsinghua University, Beijing, China
H. Y. Fu: ORCiD; Tsinghua Shenzhen International Graduate School and Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen, Guangdong, China
Yanfu Yang: ORCiD; Department of Electronic and Information Engineering, Harbin Institute of Technology, Shenzhen, Shenzhen, Guangdong, China

DOI: https://doi.org/10.1109/JPHOT.2022.3145188
Journal volume & issue: Vol. 14, no. 3
pp. 1 – 7

Abstract

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Blue/green light-emitting diodes (LEDs) have been studied extensively in medium/short-distance underwater optical wireless communication (UOWC), while available commercial bandwidth-limited LEDs cannot support the increased capacity. In this work, a 175-µm blue mini-LED with a high 3 dB modulation bandwidth of 580 MHz was designed and employed to implement a high-speed UOWC system to improve the bandwidth while maintaining high emitting optical power. As a result, we achieve the data rate of 3.8 Gb/s and the rate-distance product of 7.6 Gb/s·m of the PAM-4 signal with the 3.7e-3 bit error rate (BER) over the 2-m underwater channel by using a single-pixel 175-μm GaN-based mini-LED and an avalanche photodiode (APD). To the best of our knowledge, it is the highest rate-distance product among the UOWC systems based on a single-pixel LED and a single APD. In addition, we design multiple sets of comparison experiments to provide a comprehensive investigation regarding channel loss, transmission capacity, and computation complexity between the UOWC system with and without water.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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