Optimal design method of a low-loss broadband Y branch with a multimode waveguide section

被引：25

作者：

Wang, QA ^{[1
]}

Lu, J

He, SL

机构：

[1] Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Peoples R China

[2] Royal Inst Technol, Alfven Lab, Div Electromagnet Theory, S-10044 Stockholm, Sweden

来源：

APPLIED OPTICS | 2002年 / 41卷 / 36期

关键词：

D O I：

10.1364/AO.41.007644

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An optimal design method for a low-loss broadband silica-on-silicon Y branch is considered. A multimode waveguide section, which was used earlier to reduce the excess loss, is designed optimally when the light distribution at the end of the multimode waveguide section is matched to the profile of the symmetric Supermode for the structure of the two branching waveguides. An optimization method that combines the genetic algorithm and a gradient-based search method is used to obtain the optimal geometrical parameters for the multimode waveguide section as well as the widths for the input and branching waveguides. (C) 2002 Optical Society of America.

引用

页码：7644 / 7649

页数：6

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