Optically-controlled tunable CPW resonators

M. S. Islam*, P. Cheung, Chi-Yang Chang, D. P. Neikirk, T. Itoh

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


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 2 .

Original languageEnglish
Pages (from-to)949-950
Number of pages2
JournalIEEE MTT-S International Microwave Symposium Digest
StatePublished - 1 Jan 1990
Event1990 IEEE MTT-S International Microwave Symposium Digest Part 2 (of 3) - Dallas, TX, USA
Duration: 8 May 199010 May 1990

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