Asymmetric excitation of symmetric single-mode Y-junction: the radiation mode effects

Author

Khalil, D.A.M. ; Benech, P. ; Tedjini, S.

Author_Institution

LEMO, Grenbole, France

fYear

1992

fDate

1-5 June 1992

Firstpage

441

Abstract

A symmetric single-mode Y-junction under asymmetric excitation by an optical fiber is studied. The asymmetric excitation is due to fiber displacement with respect to the junction axis. The power splitting between the two outputs of the junction is found to depend strongly on the fiber position. Theoretical analysis shows a splitting ratio as high at 14 dB, which cannot be explained if the radiation mode coherent coupling is neglected. A GaAs/GaAlAs junction is tested and the experimental results confirm these theoretical predictions.<>

Keywords

III-V semiconductors; aluminium compounds; gallium arsenide; integrated optics; optical couplers; optical fibres; optical losses; GaAs-GaAlAs; coherent coupling; fiber displacement; fiber position; junction axis; optical fiber; power splitting; radiation mode effects; splitting ratio; symmetric single-mode Y-junction; Filters; Gallium arsenide; Geometrical optics; Integrated optics; Microwave Theory and Techniques Society; Optical fiber testing; Optical fibers; Optical losses; Optical waveguides; Slabs;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1992., IEEE MTT-S International

Conference_Location

Albuquerque, NM, USA

ISSN

0149-645X

Print_ISBN

0-7803-0611-2

Type

conf

DOI

10.1109/MWSYM.1992.188007

Filename

188007