Velocity-matched electrodes for compound semiconductor traveling-wave electrooptic modulators: experimental results

TitleVelocity-matched electrodes for compound semiconductor traveling-wave electrooptic modulators: experimental results
Publication TypeJournal Article
Year of Publication1996
AuthorsJaeger, N. A. F., F. Rahmatian, H. Kato, R. James, E. Berolo, and Z. K. F. Lee
JournalMicrowave and Guided Wave Letters, IEEE
Volume6
Pagination82
Date Publishedfeb.
ISSN1051-8207
Keywords5 to 40 GHz, AlGaAs-GaAs, aluminium compounds, capacitive loading, coplanar strips, coplanar waveguides, effective indexes, electro-optical modulation, electrode structures, gallium arsenide, III-V semiconductors, indium compounds, InGaAsP-InP, integrated optics, loss coefficients, Mach-Zehnder-type modulators, microwave/optical wave velocity-match condition, optical losses, optical planar waveguides, optical waveguide components, traveling-wave electrooptic modulators, velocity-matched electrodes
Abstract

Coplanar strips, capacitively loaded with fins and pads and capable of achieving the microwave/optical wave velocity-match condition in GaAs- and InP-based electrooptic modulators, are described. Measurements on electrodes, fabricated to have dimensions appropriate for use in conventional, Mach-Zehnder-type modulators in the 5-40 GHz range, show that these electrode structures can be made to obtain the desired match between the microwave effective index and the effective indexes of AlGaAs and InGaAsP optical waveguides, while having loss coefficients  0.7 Np/cm at 40 GHz

URLhttp://dx.doi.org/10.1109/75.481996
DOI10.1109/75.481996

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