Underwater Free-Space Optical Communication

Research Paper - 

Smart Transmitters and Receivers for Underwater Free-Space Optical Communication

Abstract
The number of unmanned vehicles and devices deployed underwater is increasing. New communication systems and networking protocols are required to handle this growth. Underwater free-space optical communication is poised to augment acoustic communication underwater, especially for short-range, mobile, multi-user environments in future underwater systems. Existing systems are typically point-to-point links with strict pointing and tracking requirements. In this paper we demonstrate compact smart transmitters and receivers for underwater free-space optical communications. The receivers have segmented wide field of view and are capable of estimating angle of arrival of signals. The transmitters are highly directional with individually addressable LEDs for electronic switched beamsteering, and are capable of estimating water quality from its backscattered light collected by its co-located receiver. Together they form enabling technologies for non-traditional networking schemes in swarms of unmanned vehicles underwater.

Source:

IEEE Journal on Selected Areas in Communications
Date of Publication: June 2012
Author(s): Simpson, Jim A.
Department of Electrical and Computer Engineering, NC State University, Raleigh, NC, 27695-7911
Hughes, Brian L. ;  Muth, John F.
Volume: 30 , Issue: 5
Page(s): 964 - 974
Product Type: Journals & Magazines
ISSN :  0733-8716
Digital Object Identifier :  10.1109/JSAC.2012.120611
Date of Current Version :   08 June 2012
Issue Date :   June 2012