Nondestructive evaluation of coupling constants in single-mode optical channel waveguides

Author

Tsubokawa, Makoto ; Tateda, Mitsuhiro ; Shibata, Norl ; Kawachi, Masao

Author_Institution

NTT Electr. Commun. Lab., Ibaraki, Japan

Volume

6

Issue

7

fYear

1988

fDate

7/1/1988 12:00:00 AM

Firstpage

1209

Lastpage

1216

Abstract

A nondestructive method is proposed for evaluating power coupling coefficients of directional couplers contained in an optical integrated circuit. This technique, which is based on optical heterodyne interferometry, makes it possible to obtain individual coupler element information without removing the element from the optical circuit. General N-channel waveguide coupling characteristics are analyzed, and they are experimentally evaluated for two- and four-channel waveguides that have been practically designed as frequency multi/demultiplexers operating in the 1.55-μm-wavelength region

Keywords

directional couplers; integrated optics; optical couplers; optical testing; optical waveguides; 1.55 micron; directional couplers; four-channel waveguides; frequency multi/demultiplexers; nondestructive method; optical heterodyne interferometry; optical integrated circuit; power coupling coefficients; single-mode optical channel waveguides; two-channel waveguides; Coupling circuits; Directional couplers; Frequency; Integrated optics; Optical attenuators; Optical coupling; Optical interferometry; Optical mixing; Optical resonators; Optical sensors; Optical waveguide theory; Optical waveguides; Photonic integrated circuits;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.4118

Filename

4118