发明名称 |
Optical modulation device having excellent electric characteristics by effectively restricting heat drift |
摘要 |
An optical waveguide for guided an incident light is formed on a substrate having an electro-optic effect. A first buffer layer is formed to cover an upper surface of the substrate. A conductive film is formed above the first buffer layer. A center electrode and a ground electrode are formed for applying a voltage in order to induce an electric field in the optical waveguide. A second buffer layer is formed between the conductive film and at least one of the center electrode and the ground electrode. The conductive film is formed to be present on at least a part below the ground electrode. A light guided through the optical waveguide is modulated by changing a phase by a voltage applied to the optical waveguide. Thereby, a thermal drift can be effectively restricted so that an optical modulation device having excellent electric characteristics can be realized.
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申请公布号 |
US2003174920(A1) |
申请公布日期 |
2003.09.18 |
申请号 |
US20030333546 |
申请日期 |
2003.01.22 |
申请人 |
ANRITSU CORPORATION |
发明人 |
KAWANO KENJI;NAKAHIRA TORU;UCHIDA SEIJI;NANAMI MASAYA;SATO YUJI |
分类号 |
G02F1/225;(IPC1-7):G02F1/035;G02B6/26 |
主分类号 |
G02F1/225 |
代理机构 |
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