发明名称 |
Acousto-optic device and fabrication method of acousto-optic device |
摘要 |
An acousto-optic device is disclosed which can achieve both of suppression of secular change and prevention of device damage and can maintain a stabilized wavelength selection filtering operation. The acousto-optic device includes a substrate on which a SAW guide for guiding a surface acoustic wave and an optical waveguide for guiding an optical wave are provided. A pyro-electricity coping conductive wiring pattern is provided in a region of the substrate other than the SAW guide and neutralizes polarization charge generated on a surface of the substrate.
|
申请公布号 |
US7218797(B2) |
申请公布日期 |
2007.05.15 |
申请号 |
US20040945923 |
申请日期 |
2004.09.22 |
申请人 |
FUJITSU LIMITED |
发明人 |
MIYATA HIROSHI;TSUNODA YUKITO;NAKAZAWA TADAO |
分类号 |
G02F1/11;G02F1/295;G02F1/125;G02F1/335;H03H9/02;H03H9/145;H03H9/25;H04J14/02 |
主分类号 |
G02F1/11 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|