Title :
Acoustooptic Bragg diffraction studies on InGaAsP waveguides
Author :
Tsai, C.D. ; Sun, B. ; Roy, A. Kar
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Irvine, CA, USA
Abstract :
Theoretical and experimental studies on guided-wave acoustooptic (AO) Bragg diffraction in composite InP/InGaAsP/InP planar waveguides were carried out for the first time. In this paper the experimental results on the excitation and propagation of ⟨110⟩-directed surface acoustic waves at the center frequency of 167 MHz and AO Bragg diffraction at 1310 nanometer wavelength in a In0.22Ga0.78As0.47P0.53 waveguide are reported. AO Bragg diffraction efficiency as high as 14% has been accomplished at acoustic power of 8.5 milliwatts using an interaction length (transducer aperture) of only 1.0 mm. Improvement in diffraction efficiency by two orders of magnitude should be achievable by optimization of acoustic transducer and optical waveguide parameters
Keywords :
III-V semiconductors; acousto-optical devices; acousto-optical effects; gallium arsenide; indium compounds; light diffraction; optical planar waveguides; surface acoustic wave transducers; ⟨110⟩-directed surface acoustic waves; 1.0 mm; 1310 nm; 14 percent; 167 MHz; 8.5 mW; AO Bragg diffraction; AO Bragg diffraction efficiency; In0.22Ga0.78As0.47P0.53 ; In0.22Ga0.78As0.47P0.53 waveguide; InGaAsP waveguides; InP-InGaAsP-InP; acoustic power; acoustic transducer; acoustooptic Bragg diffraction studies; composite InP/InGaAsP/InP planar waveguides; guided-wave acoustooptic Bragg diffraction; interaction length; optical waveguide parameters; transducer aperture; Acoustic diffraction; Acoustic propagation; Acoustic transducers; Acoustic waveguides; Indium phosphide; Optical diffraction; Optical waveguides; Planar waveguides; Surface acoustic waves; Waveguide theory;
Conference_Titel :
Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2940-6
DOI :
10.1109/ULTSYM.1995.495698
