| 摘要 |
On one pair of opposed side faces ( 1 a, 1 b) of electro-optic crystal ( 1 ), grooves ( 3 a, 3 b) are formed so as to make bottom faces of the grooves approach each other and make a distance between the bottom faces shorter than a predetermined distance, and the pair of electrodes ( 5 a, 5 b) are formed in the grooves ( 3 a, 3 b) so as to fill the grooves nearly completely. |
