Title :
Integrated acousto-electro-optic device using surface acoustic waves
Author :
DeCusatis, C.M. ; Das, P.K. ; Verona, I.E.
Author_Institution :
Rensselaer Polytech. Inst., Troy, NY, USA
Abstract :
An integrated optic AEO (acousto-electro-optic) Bragg region device which uses SAW (surface acoustic wave) and interdigital electrooptic transducers in conjunction with optical surface waveguides in lithium niobate has been demonstrated. This device has been used as a light modulator and beam deflector; it can also potentially realize fundamental operations such as convolution, correlation, and analog multiplication for matrix processing. An integrated optical device, consisting of a Ti in-diffused optical waveguide in LiNbO3 and two interdigital transducers, was investigated. Because the optical waveguide confines most of the light within the AEO interaction region, Bragg diffraction efficiencies approaching 100% have been obtained at SAW frequencies near 180 MHz. A coupled-mode theory analysis of AEO Bragg diffraction, accounting for the effects of incident light polarization, is also presented
Keywords :
acousto-optical devices; electro-optical devices; integrated optics; optical deflectors; optical modulation; surface acoustic wave devices; 180 MHz; Bragg diffraction efficiencies; Bragg region device; LiNbO3; LiNbO3:Ti optical waveguide; SAW frequencies; SAW integrated acousto-electro-optic device; analog multiplication; beam deflector; convolution; correlation; coupled-mode theory; incident light polarization; integrated optics; interdigital electrooptic transducers; light modulator; matrix processing; optical surface waveguides; Acoustic devices; Integrated optics; Optical devices; Optical diffraction; Optical modulation; Optical surface waves; Optical waveguide theory; Optical waveguides; Surface acoustic wave devices; Surface acoustic waves;
Conference_Titel :
Ultrasonics Symposium, 1990. Proceedings., IEEE 1990
Conference_Location :
Honolulu, HI
DOI :
10.1109/ULTSYM.1990.171453
