Analysis of Optical Wireless Communication for Underwater Wireless Communication

Recently, the importance of underwater wireless optical communication has been grown for applications of underwater observation and sea monitoring systems. This communication technology is expected to play a prominent role in investigating climate changes, prediction of natural disasters, discovery of natural resources, marine biology in lake, sea, and ocean environment. Though acoustic modems have long been the default wireless communication method for under water applications due to their long range, the need for high speed communication has prompted the exploration of non-acoustic methods that `have previously been overlooked due to their distance limitations. Optical wireless communication has been proposed as the best alternative in order to overcome the limitations in acoustic underwater communication. In this paper we have presented three scenarios regarding underwater optical wireless communication. They are a) Line of sight (LOS) b) Modulating Retro Reflector link c) Reflective link. In this analysis, each scenario has been tested with water having different extinction coefficient and various noise backgrounds. We analysed these links in OPTI SYSTEM. Opti System is an innovative, rapidly evolving, and powerful software design tool that enables users to plan, test, and simulate almost every type of optical link in the transmission layer of a broad spectrum of optical networks from LAN, SAN, MAN to ultra-long-haul. It offers transmission layer optical communication system design and planning from component to system level, and visually presents analysis and scenarios.