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Humboldt-Universität zu Berlin - Faculty of Mathematics and Natural Sciences - Optical Metrology

Humboldt-Universität zu Berlin | Faculty of Mathematics and Natural Sciences | Department of Physics | Optical Metrology | Publications | Double-Heterostructure Ridge-Waveguide GaAs/AlGaAs Phase Modulator for 780 nm Lasers

B. Arar, H. Wenzel, R. Güther, O. Brox, A. Maaßdorf, A. Wicht, G. Erbert, M. Weyers, G. Tränkle, H.N.J. Fernando, and A. Peters (2013)

Double-Heterostructure Ridge-Waveguide GaAs/AlGaAs Phase Modulator for 780 nm Lasers

Applied Physics B.

Results of a GaAs/AlGaAs-based phase modulator designed for an operating wavelength of 780 nm are presented for the first time. The modulator is based on a P-p-i-n-N double heterostructure and features a waveguide with a vertical W-shaped index profile optimized for low propagation losses and a ridge waveguide for lateral index-guiding. A phase modulation efficiency of 12°/V mm is reported. The propagation losses are determined to about 1.4 dB/cm.