Opt Express. 2023 May 22;31(11):18630-18644. doi: 10.1364/OE.490076.
In this paper, an omnidirectional underwater wireless optical communication (UWOC) system is proposed, including six lens-free transceivers. An omnidirectional communication with a data rate of 5 Mbps in a 7-m underwater channel is experimentally demonstrated. The optical communication system is integrated into a self-designed robotic fish, and the signal is processed real-time through an integrated micro-control unit (MCU). In addition, it is experimentally demonstrated that the proposed system could establish a stable communication link between two nodes, regardless of the nodes' locomotion and attitude, with a data rate of 2 Mbps and a communication range up to 7 m. In particular, the optical communication system features small footprint and low power consumption, which is suitable for integration in autonomous underwater vehicle (AUV) swarms to achieve an omnidirectional information transmission with low latency, high security, and high data rate compared with its acoustic counterpart.
本文提出了一种包含六个无透镜收发器的全向水下无线光通信（UWOC）系统。实验证明，在 7 米深的水下信道中，该系统可以实现 5Mbps 的全向通信。该光学通信系统集成到自行设计的机器鱼中，通过集成的微控制单元（MCU）实时处理信号。此外，实验还证明，所提出的系统可以在 2Mbps 的数据率和 7m 的通信距离内，建立两个节点之间稳定的通信链路，而无需考虑节点的运动和姿态。特别是，该光学通信系统具有小尺寸和低功耗的特点，适合集成在自主水下航行器（AUV）群中，与声学相比，实现低延迟、高安全性和高数据率的全向信息传输。
