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A multichannel correlation filter based on a photorefractive crystal for the processing of varying speckle fields

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Abstract

A method for the simultaneous processing of speckle fields generated by several single-fiber multimode interferometers is developed. The method uses a multichannel correlation filter based on a single photorefractive crystal. Mutual influence of the neighboring channels is analyzed, and it is shown that the simultaneous processing of several channels can be performed with the help of a single photorefractive crystal, provided that the interchannel spacing is not smaller than half of the size of the optical field pattern formed in the crystal plane.

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Authors and Affiliations

  1. Far East State Technical University, Pushkinskaya ul. 10, Vladivostok, 690600, Russia

    Yu. N. Kulchin, R. V. Romashko, E. N. Piskunov & A. A. Kamshilin

  2. University of Joensuu, P.O. Box 111, SF-80101, Joensuu, Finland

    Yu. N. Kulchin, R. V. Romashko, E. N. Piskunov & A. A. Kamshilin

Authors
  1. Yu. N. Kulchin
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  2. R. V. Romashko
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  3. E. N. Piskunov
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  4. A. A. Kamshilin
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Translated from Pis’ma v Zhurnal Tekhnichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Fiziki, Vol. 26, No. 12, 2000, pp. 23–27.

Original Russian Text Copyright © 2000 by Kulchin, Romashko, Piskunov, Kamshilin.

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Kulchin, Y.N., Romashko, R.V., Piskunov, E.N. et al. A multichannel correlation filter based on a photorefractive crystal for the processing of varying speckle fields. Tech. Phys. Lett. 26, 505–507 (2000). https://doi.org/10.1134/1.1262892

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  • DOI: https://doi.org/10.1134/1.1262892

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