Surface acoustic wave distribution and acousto-optic interaction in proton exchanged LiNbO3 waveguides

Annachelvi, P and Selvarajan, A and Anand, GV (1993) Surface acoustic wave distribution and acousto-optic interaction in proton exchanged LiNbO3 waveguides. In: Pramana - Journal of Physics, 41 (3). pp. 209-217.

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Abstract

The efficiency of acoustooptic (AO) interaction in YZ-cut proton exchanged (PE) LiNbO3 waveguides is theoretically analysed by determining the overlap between the optical and acoustic field distributions. The present analysis takes into account the perturbed SAW field distribution due to the presence of the PE layer on the LiNbO3 substrate determined by the rigorous layered medium approach. The overlap is found to be significant upto very high acoustic frequencies of the order of 5 GHz, whereas in the earlier analysis by vonHelmolt and Schaffer [6] for diffused waveguides, it was shown that the overlap integral rolls down to nearly zero at this high frequency range.

Item Type:	Journal Article
Publication:	Pramana - Journal of Physics
Publisher:	Indian Academy of Sciences
Additional Information:	Copyright of this article belongs to Indian Academy of Sciences.
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	11 Mar 2011 07:09
Last Modified:	11 Mar 2011 07:09
URI:	http://eprints.iisc.ac.in/id/eprint/35847

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