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