A Study on Topology Optimization of Optical Circuits Consisting of Multi-Materials

Author

Fujimoto, Kota ; Tsuji, Yasuhide ; Hirayama, Koichi ; Yasui, Takashi ; Sato, Shingo ; Kijima, Ryosuke

Author_Institution

Dept. of Electr. & Electron. Eng., Kitami Inst. of Technol., Kitami, Japan

Volume

30

Issue

13

fYear

2012

fDate

7/1/2012 12:00:00 AM

Firstpage

2210

Lastpage

2215

Abstract

A topology optimization method can be used to find out the optical waveguide structures which have the desired transmission characteristics. Using the function expansion method, we can avoid the problem of a gray area, which means that some areas having intermediate refractive index between those of usable materials appear in a design region. However, so far, topology optimization has mainly been studied for structures consisting of two isotropic materials. In this paper, we study the applicability of topology optimization to structures which include three or more materials, and demonstrate the optimal design of a waveguide crossing.

Keywords

optical materials; optical waveguides; refractive index; function expansion method; isotropic materials; multimaterials; optical circuits; optical waveguide; refractive index; topology optimization; transmission; Finite element methods; Materials; Optical devices; Optical waveguides; Optimization; Refractive index; Topology; Finite element method; optical waveguide circuit; topology optimization method;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2012.2195474

Filename

6187668