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非对称型Kerr类介质膜漏波导中的非线性导波

王奇 薛秉章 蔡英时

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非对称型Kerr类介质膜漏波导中的非线性导波

王奇, 薛秉章, 蔡英时

NONLINEAR GUIDED WAVE IN ASYMMETRIC KERR-TYPE DIELECTRIC FILM LEAKY WAVEGUIDE

WANG QI, XUE BING-ZHANG, CAI YING-SHI
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  • 本文研究了特定边界条件下非对称型Kerr类介质膜漏波导中TE0光波的传播特性。计算结果表明,介质膜厚存在一临界值。临界值之上没有导波存在,临界值之下能同时存在强场TE0模和弱场TE0模,它们具有不同的传播波数。这两个模的膜内传播功率、场强峰值位置随膜厚和光场频率的变化各不相同,色散关系也有极大差别。在对称极限之下,弱场TE0模的色散为零。
    The propagation characteristics of TE0 modes is studied in an asymmetric leaky waveguide of Kerr-type dielectric film under certain boundary condition. Our result shows that steady guided wave cannor exist if the film thickness is greater than a critical value, and two TE0 modes with different wave numbers may exist if the film thickness is less than that critical value. The propagating powers and the positions of the field amplitude peaks of these two modes in the film vary quite differently when the film thickness or the wave frequency changes. The dispersion relations of these two modes are also different. In the limit of symmetric structure, the dispersion of the weaker TE0 mode is zero.
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  • 文章访问数:  5837
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  • 被引次数: 0
出版历程
  • 收稿日期:  1987-07-31
  • 刊出日期:  2005-07-06

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