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Coupling effects for separate spatial solitons in a biased series centrosymmetric photorefractive crystal circuit considering grey solitons

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Abstract

The existence and coupling of grey–grey, grey–bright and grey–dark separate spatial solitons in a biased series centrosymmetric photorefractive crystal circuit is investigated for the first time. The numerical solution of the separate spatial solitons is presented. The coupling between the two separate spatial solitons is analysed for all three cases of separate coupled solitons, namely grey–grey, grey–bright, and grey–dark. Changing the intensity of the soliton in one crystal affects the soliton in both crystals due to flow of the light induced current through the circuit. The effect of the background intensity of each crystal on both the spatial solitons is investigated. Also, the effect of changing the temperature of one crystal affects the soliton in both crystals due to the coupling effect. The soliton width dependence on the temperature is different for each crystal.

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Authors and Affiliations

  1. Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, U.P., India

    Aavishkar Katti & Ram Anjore Yadav

  2. Department of Physics, Banasthali Vidyapith, Newai (Tonk), Rajasthan, India

    Aavishkar Katti

Authors
  1. Aavishkar Katti
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  2. Ram Anjore Yadav
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Correspondence to Aavishkar Katti.

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Katti, A., Yadav, R.A. Coupling effects for separate spatial solitons in a biased series centrosymmetric photorefractive crystal circuit considering grey solitons. Eur. Phys. J. D 72, 37 (2018). https://doi.org/10.1140/epjd/e2017-80396-x

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  • DOI: https://doi.org/10.1140/epjd/e2017-80396-x

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