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Proceedings Paper

High-speed GaAs/AlGaAs traveling wave electro-optic modulators
Author(s): H. R. Khazaei; Wei Jian Wang; Ezio Berolo; Fadhel M. Ghannouchi
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Paper Abstract

A low loss ultra wide bandwidth electro-optic polarization converter/modulator was realized on a GaAs/AlGaAs substrate. The device uses slow wave coplanar strip electrodes to match the phase velocity of optical and microwave signals to increase the modulation bandwidth. Microwave measurements show an electrical bandwidth in excess of 40 GHz. Microwave loss of the electrode is dB/cm at 40 GHz and the phase velocity of microwave signal is 8.6 cm/nsec and flat over the measured frequency range. The phase velocity mismatch between the optical and electrical signal is less than 5 percent. Electro-optic modulation was performed up to 22 GHz and no roll-off was observed in this frequency range.

Paper Details

Date Published: 12 January 1998
PDF: 7 pages
Proc. SPIE 3278, Integrated Optic Devices II, (12 January 1998); doi: 10.1117/12.298187
Show Author Affiliations
H. R. Khazaei, Communications Research Ctr. (Canada)
Wei Jian Wang, Communications Research Ctr. (Canada)
Ezio Berolo, Communications Research Ctr. (Canada)
Fadhel M. Ghannouchi, Ecole Polytechnique de Montreal (Canada)

Published in SPIE Proceedings Vol. 3278:
Integrated Optic Devices II
Giancarlo C. Righini; S. Iraj Najafi; Bahram Jalali, Editor(s)

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