Method of coupling external light into an optical waveguide and a guided wave from an optical waveguide and optical pickup employing an optical waveguide
文献类型：专利
| 作者 | SUNAGAWA, HIROSHI |
| 发表日期 | 1992-01-14 |
| 专利号 | US5081615 |
| 著作权人 | FUJIFILM CORPORATION |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Method of coupling external light into an optical waveguide and a guided wave from an optical waveguide and optical pickup employing an optical waveguide |
| 英文摘要 | A guided wave is coupled from an optical waveguide through a grating coupler, or an external light beam is coupled into an optical waveguide through a grating coupler. The grating coupler is disposed on a surface of the optical waveguide. The external light beam is diffracted by a wavelength-fluctuation-correcting grating in a direction opposite to the direction of diffraction by the grating coupler on the surface of the optical waveguide, while satisfying the Bragg condition or a predetermined equation. Alternatively, the external light beam is passed through an end surface of the substrate of the optical waveguide so that the light is refracted in the same direction as the direction of diffraction by the grating coupler on the surface of the optical waveguide, the end surface being inclined with respect to the optical waveguide at a certain angle. Optical pickups employing an optical waveguide are also disclosed. |
| 公开日期 | 1992-01-14 |
| 申请日期 | 1989-12-18 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/35960]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | FUJIFILM CORPORATION |
| 推荐引用方式 GB/T 7714 | SUNAGAWA, HIROSHI. Method of coupling external light into an optical waveguide and a guided wave from an optical waveguide and optical pickup employing an optical waveguide. US5081615. 1992-01-14. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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