AmphiLight: Direct Air-Water Communication with Laser Light


Air-water communication is fundamental for efficient underwater operations, such as environmental monitoring, surveying, or coordinating of heterogeneous aerial and underwater systems. Existing wireless techniques mostly focus on a single physical medium and fall short in achieving high-bandwidth bidirectional communication across the air-water interface. We propose a bidirectional, direct air-water wireless communication link based on laser light, capable of (1) adapting to water dynamics with ultrasonic sensing and (2) steering within a full 3D hemisphere using only a MEMS mirror and passive optical elements. In real-world experiments, our system achieves static throughputs up to 5.04 Mbps, zero-BER transmission ranges up to 6.1m in strong ambient light conditions, and connection time improvements between 47.1% and 29.5% during wave dynamics.

The 17th USENIX Symposium on Networked Systems Design and Implementation (NSDI), 2020.
Best Paper Award


Xia Zhou
Xia Zhou
Associate Professor

My research interests lie in mobile computing.