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Proceedings Paper

Static and dynamic reflection coefficients of the wall surfaces and their influence on optical power distribution in fibreless diffused networks
Author(s): Vladimir Vasinek; Jaromir Necesany; Jan Skapa; David Dubcak; Pavel Nevlud
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Paper Abstract

Solution of the light propagation model and applied implementation at optical mobile fibreless networks for indoors requires knowledge of the light behaviour at reflection. Except knowledge of the static directional characteristics of the reflected lights the knowledge of the dynamic behaviour is significant as well. Wall surfaces in precincts are furnished with paints containing colouring substances. Their metastable levels implicate time delay at reflections. By reason that typical life time in metastable states is about 10-3-10-6s it happens at bit rates above 1Mbit.s-1 to SNR influencing. Functional effect is the growth of bit error rate. The principal problem of the dynamic reflectance is that due to time delay on the pigments metastable levels the reflected light will influence far from bit interval that is a source of light for reflectance but within some of the resulting bit periods. Each surface with paints has a typical directional light distribution and in paper Fourier spectra for mostly used walls are presented.

Paper Details

Date Published: 10 September 2007
PDF: 9 pages
Proc. SPIE 6775, Active and Passive Optical Components for Communications VII, 67750T (10 September 2007); doi: 10.1117/12.734219
Show Author Affiliations
Vladimir Vasinek, Technical Univ. of Ostrava (Czech Republic)
Jaromir Necesany, Technical Univ. of Ostrava (Czech Republic)
Jan Skapa, Technical Univ. of Ostrava (Czech Republic)
David Dubcak, Technical Univ. of Ostrava (Czech Republic)
Pavel Nevlud, Technical Univ. of Ostrava (Czech Republic)


Published in SPIE Proceedings Vol. 6775:
Active and Passive Optical Components for Communications VII
Achyut Kumar Dutta; Yasutake Ohishi; Niloy K. Dutta; Andrei V. Lavrinenko, Editor(s)

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