375-nm ultraviolet-laser based non-line-of-sight underwater optical communication

Xiaobin Sun, Wenqi Cai, Omar Alkhazragi, Ee-Ning Ooi, Hongsen He, Anas Chaaban, Chao Shen, Hassan M. Oubei, Mohammed Zahed Mustafa Khan, Tien Khee Ng, Mohamed-Slim Alouini, Boon S. Ooi

Research output: Contribution to journalArticlepeer-review

45 Scopus citations


For circumventing the alignment requirement of line-of-sight (LOS) underwater wireless optical communication (UWOC), we demonstrated a non-line-of-sight (NLOS) UWOC link adequately enhanced using ultraviolet (UV) 375-nm laser. Path loss was chosen as a figure-of-merit for link performance in this investigation, which considers the effects of geometries, water turbidity, and transmission wavelength. The experiments suggest that path loss decreases with smaller azimuth angles, higher water turbidity, and shorter wavelength due in part to enhanced scattering utilizing 375-nm radiation. We highlighted that it is feasible to extend the current findings for long distance NLOS UWOC link in turbid water, such as harbor water.
Original languageEnglish (US)
Pages (from-to)12870
JournalOptics Express
Issue number10
StatePublished - May 4 2018


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