SURFACE-ACOUSTIC-WAVE SOLITON PROPAGATING ON THE METALLIC GRATING WAVE-GUIDE

The surface acoustic wave (SAW) soliton of the Korteweg-de Vries (KdV) -type propagating on the metallic grating waveguide has been observed experimentally. The periodic train of two solitons developed from the continuous sine wave of SAW. A large-amplitude soliton caught up with a small-amplitude soliton and these two solitons recombined into the i nitial sine wave at the recurrence point. The observed wave forms agre ed with the calculated ones very well which were obtained by solving t he KdV equation and satisfied the first conservation law of the KdV eq uation.