| 摘要 |
PROBLEM TO BE SOLVED: To provide a waveguide device having a spatial filter configuration which blocks an unguided optical path. SOLUTION: The optical waveguide device comprises an optically transmissive substrate 118 having first and second substantially opposite surfaces, an input end and an output end. An optical waveguide region 122 is disposed within the substrate 118 and extends from the input end to the output end. A plurality of electrodes 128, 130, 132 and 134 are disposed on the second surface at predetermined locations with respect to the optical waveguide region 122. The waveguide device includes a plurality of optical barriers each disposed proximate one of the first and second surfaces and positioned to block a different optical path of the unguided mode. COPYRIGHT: (C)2008,JPO&INPIT |
