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Proceedings Paper

Photorefractive frequency demultiplexer based on modulation of speckle patterns
Author(s): Yu. V. Miklyaev; M. Ya. Darscht
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Paper Abstract

We demonstrate a photorefractive scheme that demultiplexes two signals carried on a multimode fiber. The signal channels must be spatially and temporally uncorrelated. This method is based on selective energy transfer in photorefractive two-beam coupling. Under two-beam coupling in photorefractive crystal the energy exchange between beams take place only for signal carrier which form a speckle pattern modulated with frequency equal to the frequency detuning between two beams. Extraction of each signal was performed by the measurement of difference of beam intensities. The modulation of two speckle patterns with different frequencies was obtained by rotation of light polarization at the entrance of fiber.

Paper Details

Date Published: 23 September 1998
PDF: 4 pages
Proc. SPIE 3488, Nonlinear Optics of Liquid and Photorefractive Crystals II, (23 September 1998); doi: 10.1117/12.323707
Show Author Affiliations
Yu. V. Miklyaev, Technical Univ. (Russia)
M. Ya. Darscht, Technical Univ. (Russia)


Published in SPIE Proceedings Vol. 3488:
Nonlinear Optics of Liquid and Photorefractive Crystals II
Gertruda V. Klimusheva, Editor(s)

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