Performance Evaluation of Underwater Wireless Optical Communications Links in the Presence of Different Air Bubble Populations

IEEE Photonics Journal

Ki-Hong Park¹  Mohamed-Slim Alouini¹  Hassan Makine Oubei²  Boon S. Ooi²  Rami T. ElAfandy²  Tien Khee Ng² 

[1] Communication Theory Laboratory, Computer, Electrical and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia;Photonics Laboratory, Computer, Electrical and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia;

关键词: Oceanic propagation;    underwater wireless optical communication (UWOC);    optical wireless communication (OWC);    visible light communication (VLC);    diode lasers;    oceanic turbulence.;   

DOI  :  10.1109/JPHOT.2017.2682198

来源: DOAJ

【 摘 要 】

We experimentally evaluate the performance of underwater wireless optical communication (UWOC) links in the presence of different air bubbles. Air bubbles of different sizes and densities are generated by using an air pipe in conjunction with a submersible water pump of variable flow rate that helps break up large bubbles into smaller bubbles. Received signal intensity measurements show that bubbles significantly degrade the performance of UWOC links. Large bubbles completely obstruct the optical beam and cause a deep fade. However, as the bubble size decreases, the level of deep fade also decreases because the optical beam is less susceptible to complete obstruction, and more light reaches the detector. We also show that beam expansion could help mitigate the performance degradation due to the deep fade caused by air bubbles scatters in the channel.

【 授权许可】

Unknown