发明名称 |
Waveguide type optical element |
摘要 |
A waveguide type optical element wherein Zn is selectively diffused on a light absorption layer using an undoped InP layer. Since an impurity diffusion area is made on the light absorption layer under a ridge part, a depletion layer becomes thin in a thickness direction and an electric field can strongly be applied. Thereby, an extinction ratio characteristic of a device can be improved.
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申请公布号 |
US7289711(B2) |
申请公布日期 |
2007.10.30 |
申请号 |
US20050063832 |
申请日期 |
2005.02.23 |
申请人 |
OKI ELECTRIC INDUSTRY CO., LTD. |
发明人 |
NAKAMURA KOJI |
分类号 |
G02B6/10;G02F1/017;G02B6/12;G02F1/025;H01S5/026;H01S5/22;H01S5/30 |
主分类号 |
G02B6/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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