Xi'an Institute of Optics and Precision Mechanics,CAS
Optical apparatus using wavelength selective photocoupler | |
其他题名 | Optical apparatus using wavelength selective photocoupler |
SAKATA, HAJIME; NOJIRI, HIDETOSHI | |
1993-06-15 | |
专利权人 | CANON KABUSHIKI KAISHA |
公开日期 | 1993-06-15 |
授权国家 | 美国 |
专利类型 | 授权发明 |
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. |
其他摘要 | 光学装置本发明涉及光学装置,如光电传感器,半导体激光器,光学放大器,其中使用波长选择光电耦合器以便通过衍射光栅耦合两个波导。作为根据本发明的光学装置之一的光电传感器包括基板,形成在基板上的第一波导层,形成在第一波导层上的第二波导层,其在厚度方向上堆叠并且具有引导模式与第一波导层的模式差异,衍射光栅形成在第一和第二波导层的导模的重叠区域上,并且将通过第一波导层传播的特定波长范围的光的光分量耦合到第二波导层波导层,用于吸收耦合到第二波导层的光分量的至少一些光分量的光吸收层,以及用于将由光吸收层吸收的光分量转换成电信号并输出电信号的电极。 |
授权日期 | 1993-06-15 |
申请日期 | 1991-11-21 |
专利号 | US5220573 |
专利状态 | 失效 |
申请号 | US07/795966 |
公开(公告)号 | US5220573 |
IPC 分类号 | H01S5/00 | H01S5/026 | H01S5/125 | H01S5/16 | H01S5/22 | H01S3/19 |
专利代理人 | - |
代理机构 | FITZPATRICK,CELLA,HARPER & SCINTO |
文献类型 | 专利 |
条目标识符 | 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[P]. 1993-06-15. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
US5220573.PDF(469KB) | 专利 | 开放获取 | CC BY-NC-SA | 请求全文 |
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