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Effects and Constraints of Optical Filtering on Ambient Light Suppression in LED-Based Underwater Communications

Optical communication promises to be a high-rate supplement for acoustic communication in short-range underwater applications. In the photic zone of oceanic and coastal waters, underwater optical communication systems are exposed by remaining sunlight. This ambient light generates additional noise i...

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Autores principales: Sticklus, Jan, Hieronymi, Martin, Hoeher, Peter Adam
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6263864/
https://www.ncbi.nlm.nih.gov/pubmed/30384499
http://dx.doi.org/10.3390/s18113710
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author Sticklus, Jan
Hieronymi, Martin
Hoeher, Peter Adam
author_facet Sticklus, Jan
Hieronymi, Martin
Hoeher, Peter Adam
author_sort Sticklus, Jan
collection PubMed
description Optical communication promises to be a high-rate supplement for acoustic communication in short-range underwater applications. In the photic zone of oceanic and coastal waters, underwater optical communication systems are exposed by remaining sunlight. This ambient light generates additional noise in photodetectors, thus degrading system performance. This effect can be diminished by the use of optical filters. This paper investigates light field characteristics of different water types and potential interactions with optical underwater communication. A colored glass and different thin film bandpass filters are examined as filter/detector combinations under varying light and water conditions, and their physical constraints are depicted. This is underlined by various spectral measurements as well as optical signal-to-noise ratio calculations. The importance of matching the characteristics of the light emitting diode (LED) light source, the photodetector, and the filter on the ambient conditions using wider angle of incidents is emphasized.
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spelling pubmed-62638642018-12-12 Effects and Constraints of Optical Filtering on Ambient Light Suppression in LED-Based Underwater Communications Sticklus, Jan Hieronymi, Martin Hoeher, Peter Adam Sensors (Basel) Article Optical communication promises to be a high-rate supplement for acoustic communication in short-range underwater applications. In the photic zone of oceanic and coastal waters, underwater optical communication systems are exposed by remaining sunlight. This ambient light generates additional noise in photodetectors, thus degrading system performance. This effect can be diminished by the use of optical filters. This paper investigates light field characteristics of different water types and potential interactions with optical underwater communication. A colored glass and different thin film bandpass filters are examined as filter/detector combinations under varying light and water conditions, and their physical constraints are depicted. This is underlined by various spectral measurements as well as optical signal-to-noise ratio calculations. The importance of matching the characteristics of the light emitting diode (LED) light source, the photodetector, and the filter on the ambient conditions using wider angle of incidents is emphasized. MDPI 2018-10-31 /pmc/articles/PMC6263864/ /pubmed/30384499 http://dx.doi.org/10.3390/s18113710 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sticklus, Jan
Hieronymi, Martin
Hoeher, Peter Adam
Effects and Constraints of Optical Filtering on Ambient Light Suppression in LED-Based Underwater Communications
title Effects and Constraints of Optical Filtering on Ambient Light Suppression in LED-Based Underwater Communications
title_full Effects and Constraints of Optical Filtering on Ambient Light Suppression in LED-Based Underwater Communications
title_fullStr Effects and Constraints of Optical Filtering on Ambient Light Suppression in LED-Based Underwater Communications
title_full_unstemmed Effects and Constraints of Optical Filtering on Ambient Light Suppression in LED-Based Underwater Communications
title_short Effects and Constraints of Optical Filtering on Ambient Light Suppression in LED-Based Underwater Communications
title_sort effects and constraints of optical filtering on ambient light suppression in led-based underwater communications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6263864/
https://www.ncbi.nlm.nih.gov/pubmed/30384499
http://dx.doi.org/10.3390/s18113710
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