I am trying to understand dispersion, and to do it within the context of surface acoustic waves (SAWs). For surface acoustic wave devices the inter-digital transducers (IDTs) produce Rayleigh waves that travel along the surface.
However within this system, depending on the substrate material, there will be some other acoustic wave types observed, (bulk, Love, etc.) but with typically with a lower energy.
Acoustic dispersion as I understand from Wikipedia is a sound wave separating into component frequencies as it passes through a materials. Would some of these other acoustic signals be dispersion of the original surface wave? I think some might be produced inadvertently by the IDTs.
Edit to address a comment. IDTs are inter-digital transducers, a metallic pattern of interlocking fingers used to produce surface wave on a piezoelectric substrate. The question is looking for explanation of acoustic dispersion with relation to SAWs specifically.