| 摘要 |
<p>An optical waveguide device (200) is provided for receiving light that has a guided mode and as unguided mode. The device comprises an optically transmissive substrate (118) having first (148) and second (158) 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 to the output. A plurality of electrodes (128, 130, 132, 134) is disposed on the second surface at predetermined locations with respect to the waveguide region (122). The device includes a plurality of optical barriers (174, 176, 178) each disposed proximate one of the first (148) and second (158) surfaces and positioned to block a different optical path of the unguided mode.</p> |
