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

Annachelvi, P. ; Selvarajan, A. ; Anand, G. V. (1993) Surface acoustic wave distribution and acousto-optic interaction in proton exchanged LiNbO3 waveguides Pramana - Journal of Physics, 41 (3). pp. 209-217. ISSN 0304-4289

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Official URL: http://www.ias.ac.in/j_archive/pramana/41/3/209-21...

Related URL: http://dx.doi.org/10.1007/BF02847439

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:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Acoustooptic Interaction; LiNbO3 Waveguides; Proton Exchange
ID Code:71992
Deposited On:28 Nov 2011 05:01
Last Modified:18 May 2016 17:26

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