Surface acoustic wave distribution and acoustooptic interactions in silica waveguide Bragg devices |
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Authors: | Chen Chen Bangren Shi Meng Zhao Lijun Guo |
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Affiliation: | Physics Department, Changchun University of Science and Technology, 7089 Weixing Road, Changchun, 130022, PR China |
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Abstract: | The efficiency of acoustooptic interaction in single-mode strip silica waveguide is analyzed theoretically for the first time by determining the overlap integral between the optical and acoustic field distributions. The results show that there is a good overlap of the optical and SAW fields in the low SAW frequency range. At high acoustic frequencies, the overlap integral decreases with increasing acoustic frequency. At 216 MHz, the maximum of 0.8544 for the overlap integral is obtained provided that the H/Λ equals 0.02. |
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