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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 33 — Nov. 20, 2013
  • pp: 7867–7873

Underwater optical wireless communications: depth dependent variations in attenuation

Laura J. Johnson, Roger J. Green, and Mark S. Leeson  »View Author Affiliations

Applied Optics, Vol. 52, Issue 33, pp. 7867-7873 (2013)

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Depth variations in the attenuation coefficient for light in the ocean were calculated using a one-parameter model based on the chlorophyll-a concentration Cc and experimentally-determined Gaussian chlorophyll-depth profiles. The depth profiles were related to surface chlorophyll levels for the range 04mg/m2, representing clear, open ocean. The depth where Cc became negligible was calculated to be shallower for places of high surface chlorophyll; 111.5 m for surface chlorophyll 0.8<Cc<2.2mg/m3 compared with 415.5 m for surface Cc<0.04mg/m3. Below this depth is the absolute minimum attenuation for underwater ocean communication links, calculated to be 0.0092m1 at a wavelength of 430 nm. By combining this with satellite surface-chlorophyll data, it is possible to quantify the attenuation between any two locations in the ocean, with applications for low-noise or secure underwater communications and vertical links from the ocean surface.

© 2013 Optical Society of America

OCIS Codes
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Atmospheric and Oceanic Optics

Original Manuscript: August 16, 2013
Manuscript Accepted: October 16, 2013
Published: November 12, 2013

Virtual Issues
Vol. 9, Iss. 1 Virtual Journal for Biomedical Optics

Laura J. Johnson, Roger J. Green, and Mark S. Leeson, "Underwater optical wireless communications: depth dependent variations in attenuation," Appl. Opt. 52, 7867-7873 (2013)

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