Coupled-mode analysis of bent planar waveguides with finite claddings

被引:1
|
作者
Mirianashvili, M [1 ]
Ono, K [1 ]
Hotta, M [1 ]
机构
[1] Ehime Univ, Fac Engn, Dept Elect & Elect Engn, Matsuyama, Ehime 7908577, Japan
关键词
coupled-mode theory; circularly bent waveguide; finite claddings; conformal transformation method; ideal mode expansion; pure bend loss;
D O I
10.1143/JJAP.37.3651
中图分类号
O59 [应用物理学];
学科分类号
摘要
Coupled-mode analysis of uniformly bent slab waveguides with finite claddings is demonstrated. Using the method of conformal transformation, a curved waveguide structure is translated into an equivalent straight waveguide with a modified asymmetric index profile. The wave propagation through this structure is described by coupled-mode formalism with ideal mode expansion. The step-index profiles as well as graded-index profiles are considered. The numerical results of transmitted power, wave propagation along the bend and pure bend loss are presented for TEo-mode excitation.
引用
收藏
页码:3651 / 3656
页数:6
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