Design and analysis of novel multimode optical filters in dielectric waveguide

Author

Safavi-Naeini, S. ; Chaudhuri, S.K. ; Goss, A.

Author_Institution

Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada

Volume

11

Issue

12

fYear

1993

fDate

12/1/1993 12:00:00 AM

Firstpage

1970

Lastpage

1977

Abstract

A new multimode filter design for wavelength multiplexing/demultiplexing applications is investigated. An asymmetric bend generates a number of higher-order modes with appropriate amplitudes from a single-mode incident wave containing two wavelengths. These modes, after travelling along a straight section of multimode waveguide, are recombined in the output Y-branch in such a way that the optical signals at two wavelengths are split and redirected toward different output branches. The structure is analyzed by a combination of finite-difference/time-domain (FD/TD) procedure and a recently developed physical optics method. Numerical results on a sample structure are presented and issues related to the accuracy of results are addressed

Keywords

finite difference time-domain analysis; optical filters; optical waveguide theory; physical optics; wavelength division multiplexing; asymmetric bend; dielectric waveguide; finite-difference/time-domain procedure; higher-order modes; multimode filter design; multimode optical filters; multimode waveguide; optical signals; output Y-branch; output branches; physical optics method; single-mode incident wave; straight section; two wavelengths; wavelength multiplexing/demultiplexing applications; Demultiplexing; Dielectric losses; Optical design; Optical filters; Optical interferometry; Optical waveguides; Physical optics; Time domain analysis; Waveguide components; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.257958

Filename

257958