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Underwater optical wireless communications : depth dependent variations in attenuation
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Johnson, Laura J., Green, Roger and Leeson, Mark S. (2013) Underwater optical wireless communications : depth dependent variations in attenuation. Applied Optics, Volume 52 (Number 33). pp. 7867-7873. doi:10.1364/AO.52.007867
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Official URL: http://dx.doi.org/10.1364/AO.52.007867
Abstract
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 0–4 mg/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<2.2 mg/m3 compared with 415.5 m for surface Cc<0.04 mg/m3. Below this depth is the absolute minimum attenuation for underwater ocean communication links, calculated to be 0.0092 m−1 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.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||
| Divisions: | Faculty of Science > Engineering | ||||
| Library of Congress Subject Headings (LCSH): | Ocean engineering , Optical communications, Wireless communication systems | ||||
| Journal or Publication Title: | Applied Optics | ||||
| Publisher: | Optical Society of America | ||||
| ISSN: | 0003-6935 | ||||
| Official Date: | 2013 | ||||
| Dates: |
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| Date of first compliant deposit: | 23 November 2016 | ||||
| Volume: | Volume 52 | ||||
| Number: | Number 33 | ||||
| Page Range: | pp. 7867-7873 | ||||
| DOI: | 10.1364/AO.52.007867 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), Thales (Firm) |
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