Optically-controlled tunable CPW resonators

Author

Islam, M.S. ; Cheung, P. ; Chang, C.Y. ; Neikirk, D.P. ; Itoh, T.

Author_Institution

Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA

fYear

1990

fDate

8-10 May 1990

Firstpage

949

Abstract

The use of a Schottky-biased, optically controlled, coplanar waveguide (CPW) in a microwave resonator is investigated. A prototype device consisting of a CPW atop a lightly doped GaAs epi-layer on a semi-insulating GaAS substrate has been fabricated and tested. By using Schottky-contacted metal electrodes to reduce loss and increase optical sensitivity, tunable resonance has been achieved, with resonator Qs of approximately 8.4 for resonance near 10 GHz, and a tuning range of about 125 MHz at an optical illumination power of only 34 mW/cm/sup 2/.<>

Keywords

III-V semiconductors; cavity resonators; gallium arsenide; solid-state microwave devices; waveguide components; 10 GHz; Q-factor; Schottky biased optically controlled coplanar waveguide; Schottky-contacted metal electrodes; lightly doped GaAs epilayer; microwave resonator; optical illumination power; optical sensitivity; semiinsulating GaAs substrate; tunable resonance; tuning range; Coplanar waveguides; Gallium arsenide; Microwave devices; Optical control; Optical resonators; Optical sensors; Optical waveguides; Prototypes; Resonance; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1990., IEEE MTT-S International

Conference_Location

Dallas, TX

Type

conf

DOI

10.1109/MWSYM.1990.99735

Filename

99735