Title :
Mode profiles in waveguide-coupled resonators
Author :
Hunt, William D. ; Cameron, Tom ; Saw, John C B ; Kim, Yoonkee ; Suthers, Mark S.
Author_Institution :
Sch. of Elect. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
Surface acoustic wave (SAW) waveguide-coupled (WGC) resonators are used for narrowband filter applications. A study of SAW mode profiles is presented. Transverse mode profiles in the resonant cavity of the device are measured at various frequencies of interest using a knife-edge laser probe. Mode profiles for the device structure are predicted by two independent methods. One is a stack-matrix approach adapted from integrated optics, and the other is a conventional analytical eigenmode analysis of the Helmholtz equation. Both modeling techniques are in good agreement with the measured results
Keywords :
acoustic resonators; acoustic waveguides; crystal resonators; eigenvalues and eigenfunctions; matrix algebra; surface acoustic wave filters; Helmholtz equation; SAW mode profiles; SAW waveguide-coupled resonators; analytical eigenmode analysis; knife-edge laser probe; modeling techniques; narrowband filter; resonant cavity; stack-matrix approach; transverse mode profiles; Acoustic waveguides; Acoustic waves; Narrowband; Optical resonators; Optical surface waves; Optical waveguides; Resonance; Resonator filters; Surface acoustic wave devices; Surface acoustic waves;
Conference_Titel :
Ultrasonics Symposium, 1992. Proceedings., IEEE 1992
Conference_Location :
Tucson, AZ
Print_ISBN :
0-7803-0562-0
DOI :
10.1109/ULTSYM.1992.276066
