The acousto optic device includes a substrate on which {HEAD ~ a SAW guide} for guiding {TAIL ~ a surface acoustic wave} and an optical waveguide for guiding an optical wave are provided 
for guiding
The acousto optic device includes a substrate on which { HEAD ~ a SAW guide } for guiding { TAIL ~ a surface acoustic wave } and an optical waveguide for guiding an optical wave are provided
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH