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首页> 外文期刊>Optical and Quantum Electronics >Influence of Kerr nonlinearity on single-mode dispersion-shifted and dispersion-flattened directional couplers: analysis by a simple but accurate method
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Influence of Kerr nonlinearity on single-mode dispersion-shifted and dispersion-flattened directional couplers: analysis by a simple but accurate method

机译：Influence of Kerr nonlinearity on single-mode dispersion-shifted and dispersion-flattened directional couplers: analysis by a simple but accurate method

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摘要

In this paper, we present the coupling characteristics of single-mode dispersion-shifted and dispersion-flattened fibers directional couplers both in presence as well as in absence of Kerr nonlinearity. In this regard, we apply the simple power series expression for the fundamental mode for each kind of fiber as developed by Chebyshev formalism. In order to obtain the coupling parameters in the nonlinear region, method of iteration is used to obtain the convergent values of cladding decay parameter and the normalised power series coefficients in nonlinear region. The concerned evaluation involves little computation but our results match excellently with the exact results obtainable by rigorous methods. Thus, our method can be considered as a simple alternative to the existing complex methods found in literature. So, this simple method will prove user friendly to the technologists working with such devices in the field of Kerr-type nonlinear photonics.

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