A new low-loss structure of abrupt bends in dielectric waveguides

Author

Hirayama, Koichi ; Koshiba, Masanori

Author_Institution

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

Volume

10

Issue

5

fYear

1992

fDate

5/1/1992 12:00:00 AM

Firstpage

563

Lastpage

569

Abstract

In the proposed low-loss structure, a region whose refractive index is altered for reducing bending losses becomes much smaller. The beam propagation method is used to evaluate the loss of the modified corner bend proposed here. The validity of the results is confirmed in some cases through a comparison with those of a combination of the finite-element and boundary-element methods. Also, it is shown that the propagation characteristics of the proposed structure can be easily explained by using Snell´s law

Keywords

bending; boundary-elements methods; finite element analysis; integrated optics; optical losses; optical waveguide theory; Snell´s law; abrupt bends; beam propagation method; bending losses; boundary-element methods; dielectric waveguides; finite element methods; low-loss structure; modified corner bend; optical integrated circuits; refractive index; Dielectrics; Finite element methods; Integrated optics; Optical refraction; Optical scattering; Optical variables control; Optical waveguide theory; Optical waveguides; Refractive index; Waveguide discontinuities;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.136089

Filename

136089