Chinese Optics Letters, Vol. 16, Issue 8, 080101 (2018)
Experimental demonstration of underwater optical wireless power transfer using a laser diode
Sung-Man Kim*, Jongmyeong Choi, and Hyunwoo Jung
- Department of Electronic Engineering, Kyungsung University, Nam-Gu, Busan 48434, Korea
We experimentally demonstrate an underwater optical wireless power transfer (OWPT) using a laser diode (LD) as a power transmitter. We investigate the characteristics of a solar cell and a photodiode (PD) as a power receiver. We optimize the LD, the PD, and the solar cell to achieve the maximum transfer efficiency. The maximum transfer efficiency of the back-to-back OWPT is measured as 4.3% with the PD receiver. Subsequently, we demonstrate the OWPT in tap and sea water. Our result shows an attenuation of 3?dB/m in sea water.