Li Xin, Tong Zhijian, Lyu Weichao, Chen Xiao, Yang Xingqi, Zhang Yufan, Liu Songjie, Dai Yizhan, Zhang Zejun, Guo Chaoyang, Xu Jing
Opt Express. 2022 Jan 17;30(2):1709-1722. doi: 10.1364/OE.448213.
In this paper, a quasi-omnidirectional transmitter is proposed and demonstrated for underwater wireless optical communication (UWOC) using the photoluminescence of perovskite quantum dots (QDs). The proposed transmitter, without complex driving circuits, is compact and reliable thanks to the lens-free design. The system performance is tested in a 50-m swimming pool with a water attenuation coefficient of 0.38 dB/m. The maximum data rates of on-off-keying (OOK) signals over 10-m and 20-m transmission distances can reach 60 Mbps and 40 Mbps, respectively. When four clients are adopted in a code division multiple access (CDMA) based UWOC network, the maximum data rates of each client can reach 10 Mbps and 7.5 Mbps over 10-m and 20-m underwater channels, respectively. The system can meet the requirements of the last meter end-user access in the Internet of underwater things (IoUT) and underwater optical cellular network systems.
本文提出并演示了一种用于水下无线光通信（UWOC）的准全向发射器，该发射器利用钙钛矿量子点（QD）的光致发光特性。所提出的发射器无需复杂的驱动电路，由于无透镜设计，结构紧凑且可靠。该系统性能在一个水衰减系数为0.38 dB/m的50米游泳池中进行了测试。在10米和20米传输距离上，开关键控（OOK）信号的最大数据速率分别可达60 Mbps和40 Mbps。当在基于码分多址（CDMA）的UWOC网络中采用四个客户端时，在10米和20米水下信道上，每个客户端的最大数据速率分别可达10 Mbps和7.5 Mbps。该系统能够满足水下物联网（IoUT）和水下光蜂窝网络系统中最后一米终端用户接入的要求。
