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.
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J L Jackel, C E Rice and J J Veselka,Appl. Phys. Lett. 41, 607 (1982)
R A Becker,Appl. Phys. Lett. 43, 131 (1983)
M Miyawaki and S Ogura,Appl. Phys. Lett. 47, 918 (1985)
M Varasi, A Vannucci and S Reid,Proc. SPIE 1151, 457 (1989)
E M Biebl and P Russer,IEEE Trans. Ultrason., Ferroelect. Freq. Control. 39, 330 (1992)
C H vonHelmolt and C Schaffer,J. Opt. Commun. 8, 49 (1987)
A W Warner, M Onoe and G A Coquin,J. Acoust. Soc. Am. 42, 1223 (1967)
G W Farnell,IEEE Trans. Sonics, Ultrason, Ferroelect. Freq. Control SU17 229 (1970)
A K Ghatak and K Thyagarajan,Optical electronics (Cambridge University Press, London, 1989) ch. 14, p. 427
C S Tsai, M A Alhaider, L T Nguyen and B Kim,Proc. IEEE 64, 318 (1976)
S Mc Meekin and R M De la Rue,Electron. Lett. 25, 853 (1989)
A Loni, G Hay, R M De la Rue and J M Winfield,IEEE J. Lightwave Technol. 7, 911 (1989)
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Annachelvi, P., Selvarajan, A. & Anand, G.V. Surface acoustic wave distribution and acousto-optic interaction in proton exchanged LiNbO3 waveguides. Pramana - J. Phys. 41, 209–217 (1993). https://doi.org/10.1007/BF02847439
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DOI: https://doi.org/10.1007/BF02847439