Experimental Demonstration of High-Sensitivity Underwater Optical Wireless Communication Based on Photocounting Receiver

Photonics

Fulong Yan¹  Xiong Deng²  Siqi Li³  Zhijia Hu³  Chao Li³  Daomin Chen⁴  Zichen Liu⁵ 

[1] Alibaba Cloud, Alibaba Group, Beijing 100102, China;Center for Information Photonics and Communications, School of Information Science and Technology, Southwest Jiaotong University, Chengdu 611756, China;Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei 230601, China;Shanghai Huawei Technology Co., Ltd., Shanghai 200001, China;Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China;

关键词: underwater optical wireless communication (UOWC);    long-reach;    photon counting;   

DOI  :  10.3390/photonics8110467

来源: DOAJ

【 摘 要 】

In this paper, we propose a high-sensitivity long-reach underwater optical wireless communication (UOWC) system with an Mbps-scale data rate. Using a commercial blue light-emitting diode (LED) source, a photon counting receiver, and return-to-zero on–off keying modulation, a receiver sensitivity of −70 dBm at 7% FEC limit is successfully achieved for a 5 Mbps intensity modulation direct detection UOWC system over 10 m underwater channel. For 1 Mbps and 2 Mbps data rates, the receiver sensitivity is enhanced to −76 dBm and −74 dBm, respectively. We further investigate the system performance under different water conditions: first type of seawater (c = 0.056 m⁻¹), second type (c = 0.151 m⁻¹), and third type (c = 0.398 m⁻¹). The maximum distance of the 2 Mbps signal can be extended up to 100 m in the first type of seawater.

【 授权许可】

Unknown