Analysis of the coupling characteristics of a tapered three-guide coupled system

Author

Cai, Yuanmin ; Mizumoto, Tetsuya ; Naito, Yoshiyuki

Author_Institution

Dept. of Phys. Electron., Tokyo Inst. of Technol., Japan

Volume

8

Issue

10

fYear

1990

fDate

10/1/1990 12:00:00 AM

Firstpage

1621

Lastpage

1629

Abstract

Optical coupling characteristics of a three-guide coupled system are discussed. Application of a taper-formed waveguide in the system is proposed. A theoretical analysis of the tapered waveguide system is presented by applying a modified coupled-mode theory, with the tapered guide being approximated by successive stepped small guide segments. Based on numerical examinations, particular coupling characteristics of the tapered guide system are demonstrated. An application of the tapered three-guide coupled system in a type of optical isolator is proposed. The main working principles of the isolator are presented

Keywords

optical couplers; optical isolators; optical waveguide theory; coupling characteristics; modified coupled-mode theory; optical isolator; power-dividing ratios; successive stepped small guide segments; taper-formed waveguide; tapered three-guide coupled system; Isolators; Optical arrays; Optical coupling; Optical propagation; Optical refraction; Optical sensors; Optical switches; Optical waveguides; Phased arrays; Slabs;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.59205

Filename

59205