Optical apparatus using wavelength selective photocoupler
文献类型：专利
| 作者 | SAKATA, HAJIME; NOJIRI, HIDETOSHI |
| 发表日期 | 1993-06-15 |
| 专利号 | US5220573 |
| 著作权人 | CANON KABUSHIKI KAISHA |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Optical apparatus using wavelength selective photocoupler |
| 英文摘要 | The present invention relates to optical apparatus such as a photosensor, a semiconductor laser, an optical amplifier in which a wavelength selective photocoupler is used so as to couple two waveguides through a diffraction grating. A photosensor which is one of the optical apparatus according to the present invention comprises a substrate, a first waveguide layer formed on the substrate, a second waveguide layer formed on the first waveguide layer to be stacked in a direction of thickness and which has a guided mode difference from that of the first waveguide layer, a diffraction grating formed on an overlapping region of the guided modes of the first and second waveguide layers and which couples light components of a specific wavelength range of light propagating through the first waveguide layer to the second waveguide layer, a light absorption layer for absorbing at least some light components of the light components coupled to the second waveguide layer, and an electrode for converting the light components absorbed by the light absorption layer into an electrical signal and outputting the electrical signal. |
| 公开日期 | 1993-06-15 |
| 申请日期 | 1991-11-21 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/42236]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | CANON KABUSHIKI KAISHA |
| 推荐引用方式 GB/T 7714 | SAKATA, HAJIME,NOJIRI, HIDETOSHI. Optical apparatus using wavelength selective photocoupler. US5220573. 1993-06-15. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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