Electro-optical element

摘要

An electro-optical element includes a core layer made of an electro-optical material, a clad structure disposed on each of opposite sides of the core layer and configured to form an optical waveguide together with the core layer, and a pair of electrode layers, one of which being disposed on one side of the clad structure and another being disposed on another side of the clad structure. The clad structure includes a first clad layer and a second layer. The second clad layer has a dielectric permittivity larger than that of the first clad layer, and the second clad layer has a thickness thicker than that of the first clad layer.

主权项

1. An electro-optical element, comprising:
a core layer made of an electro-optical material; a first clad structure directly on one side of the core layer and configured to form an optical waveguide together with the core layer; and a second clad structure directly on an opposite side of the core layer and configured to form an optical waveguide together with the core layer; wherein
(1) the first clad structure comprises a first clad layer and a second clad layer, wherein the first clad layer is directly on the core layer and the second clad layer is directly on the first clad layer, wherein the second clad layer has an dielectric permittivity larger than that of the first clad layer, and wherein the second clad layer has a thickness thicker than that of the first clad layer, and(2) the second clad structure comprises a first clad layer and a second clad layer, wherein the first clad layer is directly on the core layer and the second clad layer is directly on the first clad layer, wherein the second clad layer has an dielectric permittivity larger than that of the first clad layer, and wherein the second clad layer has a thickness thicker than that of the first clad layer, a first electrode on the first clad structure, where on the first electrode is on the second clad layer of the first clad structure; and a second electrode on the second clad structure, where the second electrode is on the second clad layer of the second clad structure.