| 摘要 |
<p>An optical control device comprises optical waveguides (2,3) provided on a substrate(1) having an electrooptic effect, a buffer layer (6) provided on the substrate (1) to cover the optical waveguides (2, 3), and control electrodes (5)provided on the buffer layer (6) for applying a predetermined voltage across the optical waveguides (2,3). The optical waveguides (2, 3) have a coupling portion, at which an interval of the optical waveguides (2, 3) is narrowed. In this optical control device, a distortion dispersing structure (10) is provided in the vicinity of the control electrodes (5)to disperse distortion locally accumulated in the vicinity of the control electrodes (5) to the whole area of the substrate (1) uniformly.</p> |
