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

Hassan M. Oubei, Rami T. Elafandy, Kihong Park, Tien Khee Ng, Mohamed-Slim Alouini, Boon S. Ooi

Research output: Contribution to journalArticlepeer-review

62 Scopus citations


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 help 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.
Original languageEnglish (US)
Pages (from-to)1-9
Number of pages9
JournalIEEE Photonics Journal
Issue number2
StatePublished - Mar 16 2017

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