High-speed GaAs/AlGaAs traveling wave electro-optic modulators

H. R. Khazaei; Wei Jian Wang; Ezio Berolo; Fadhel M. Ghannouchi

doi:10.1117/12.298187

12 January 1998 High-speed GaAs/AlGaAs traveling wave electro-optic modulators

H. R. Khazaei, Wei Jian Wang, Ezio Berolo, Fadhel M. Ghannouchi

Proceedings Volume 3278, Integrated Optic Devices II; (1998) https://doi.org/10.1117/12.298187
Event: Optoelectronics and High-Power Lasers and Applications, 1998, San Jose, CA, United States

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.

Citation Download Citation

H. R. Khazaei, Wei Jian Wang, Ezio Berolo, and Fadhel M. Ghannouchi "High-speed GaAs/AlGaAs traveling wave electro-optic modulators", Proc. SPIE 3278, Integrated Optic Devices II, (12 January 1998); https://doi.org/10.1117/12.298187

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