Spatial soliton propagation through a triangular waveguide: A Runge Kutta study

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• 作者：S.Z. Seyed Shirazi^a ; M. Solaimani^b ; B. Farnam^a ; ^{behnaz_farnam@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; M. Ghalandari^b ; S.M.A. Aleomraninejad^a
• 关键词：4th order Runge Kutta method ; Spatial soliton propagation ; Nonlinear Schrö ; dinger equation
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：129
• 期：Complete
• 页码：200-206
• 全文大小：1416 K

文摘

In this work, we have studied a traveling soliton through a triangular refractive index waveguide. Our calculations have been performed with a 4th order Runge Kutta method which we have presented the algorithm. Then we have checked the numerical accuracy and found it desirable. In our investigations, the light beam inside a waveguide have been oscillated which perfectly agree with the so-called “swing effect”. In comparison with a soliton with amplitude Q = 1, for soliton amplitude Q = 2 a shorter oscillation period have been observed. In the meantime, for lower waveguide widths, soliton have had shorter oscillation period. Finally, for η ≠ 0, the soliton oscillate with higher amplitude and it recede from center of waveguide which is not desirable.