Anti-Interference Air-to-Water Wireless Optical Communication via Circularly Polarized Light

Wireless optical communication (WOC) has a wide range of underwater applications in various fields due to its high bandwidth and low latency. However, the interference of sunlight and multiple scattered light seriously affects the communication quality of air-to-water WOC. Achieving anti-interference air-to-water WOC in the shallow seawater remains a difficult challenge. In this paper, we present a novel and effective method for air-to-water WOC via circularly polarized light. This method can significantly mitigate adverse effects of the sunlight interference and underwater multiple scattered light during the signal transmission, thus achieving anti-interference capability. The concept can also be applied to the field of remote sensing based on laser radar.