Title :
Transverse and longitudinal modes in waveguide-coupled resonators
Author :
Hunt, W.D. ; Cameron, T. ; Saw, J.C.B. ; Kim, Y. ; Suthers, M.S.
Author_Institution :
Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
Transverse and longitudinal mode profiles in the resonant cavity of the surface-acoustic-wave (SAW) waveguide-coupled (WGC) resonator has been measured at various frequencies of interest using a knife-edge laser probe. In addition, the 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. It is concluded that the versatility and accuracy of the stack matrix technique makes it useful for the calculation of mode profiles in complicated, multichannel SAW and acoustic-charge-transport (ACT) devices.<>
Keywords :
crystal resonators; eigenvalues and eigenfunctions; matrix algebra; surface acoustic wave devices; ACT devices; Helmholtz equation; acoustic-charge-transport; analytical eigenmode analysis; knife-edge laser probe; longitudinal modes; mode profiles; modeling techniques; multichannel SAW devices; resonant cavity; stack-matrix approach; surface-acoustic-wave; transverse modes; waveguide-coupled resonators; Frequency measurement; Laser modes; Optical resonators; Optical surface waves; Optical waveguides; Resonance; Surface acoustic waves; Surface emitting lasers; Surface waves; Waveguide lasers;
Conference_Titel :
Microwave Symposium Digest, 1993., IEEE MTT-S International
Conference_Location :
Atlanta, GA, USA
Print_ISBN :
0-7803-1209-0
DOI :
10.1109/MWSYM.1993.276854
