Eigenmode analysis of optical switches in LiNbO/sub 3/-theory and experiments

Author

Weierholt, Audun J. ; Neegard, Steinar ; Mickelson, Alan R.

Author_Institution

Electron. Res. Lab., Norwegian Inst. of Technol., Trondheim, Norway

Volume

24

Issue

12

fYear

1988

Firstpage

2477

Lastpage

2490

Abstract

The alternating electrode voltage directional coupler is analyzed by using the orthogonal symmetric and antisymmetric eigenmodes of a parallel waveguide structure. Then, conventional coupled-mode theory can be applied without modification of coupling constants. Lateral and longitudinal symmetry of electrodes and waveguides is assumed. In particular, a specific Ti:LiNbO/sub 3/ coupler is considered. It is found that the orthogonal eigenmode description leads to a different explanation of the operational principle of the so-called Delta beta coupler, as compared to conventional analysis in terms of nonorthogonal individual guide modes.<>

Keywords

directional couplers; electro-optical devices; integrated optics; lithium compounds; optical couplers; optical switches; titanium; LiNbO/sub 3/:Ti; alternating electrode voltage directional coupler; antisymmetric eigenmodes; conventional coupled-mode theory; nonorthogonal individual guide modes; optical switches; orthogonal eigenmode description; orthogonal symmetric eigenmodes; parallel waveguide structure; symmetry; Councils; Coupled mode analysis; Electrodes; Equations; Fabrication; Optical switches; Optical waveguides; Propagation constant; Voltage; Waveguide theory;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.14379

Filename

14379