Photorefractive frequency demultiplexer based on modulation of speckle patterns

Yu. V. Miklyaev; M. Ya. Darscht

doi:10.1117/12.323707

23 September 1998 Photorefractive frequency demultiplexer based on modulation of speckle patterns

Yu. V. Miklyaev, M. Ya. Darscht

Proceedings Volume 3488, Nonlinear Optics of Liquid and Photorefractive Crystals II; (1998) https://doi.org/10.1117/12.323707
Event: International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals, 1997, Partenit, Crimea, Ukraine

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.

Citation Download Citation

Yu. V. Miklyaev and M. Ya. Darscht "Photorefractive frequency demultiplexer based on modulation of speckle patterns", Proc. SPIE 3488, Nonlinear Optics of Liquid and Photorefractive Crystals II, (23 September 1998); https://doi.org/10.1117/12.323707

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