Evolution of solitons of nonlinear Schrödinger equation with variable parameters |
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| Authors: | Shuangchun Wen Wencheng Xu Qi Guo Songhao Liu |
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| Institution: | (1) Department of Physics, Hengyang Teachers College, 421008 Hengyang, China;(2) Institute of Quantum Electronics, South China Normal University, 510631 Guangzhou, China |
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| Abstract: | The nonlinear Schrödinger equation with variable parameters is solved by means of variational technique. A set of evolution equations for the solitary-wave solution is derived. The propagation properties of the solitons in an adiabatic amplification system and in a dispersion-decreasing fiber are analyzed. An explicit analytical approximate soliton solution in the exponentially dispersion-decreasing fiber is obtained using the derived dynamical equations. |
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| Keywords: | nonlinear Schr?dinger equation optical soliton optical fiber |
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