Optical waveguide structure and its manufacture
文献类型：专利
| 作者 | MOROSAWA KENICHI; NAKAMURA HITOSHI; KATSUYAMA TOSHIO; INOUE HIROAKI; MATSUMURA HIROYOSHI; SAKANO SHINJI; KURODA TAKARO |
| 发表日期 | 1988-07-06 |
| 专利号 | JP1988163407A |
| 著作权人 | HITACHI LTD |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Optical waveguide structure and its manufacture |
| 英文摘要 | PURPOSE:To efficiently couple each optical device, or elements in an optical integrated circuit, by providing an incident end whose thickness becomes thin gradually, or an exiting end whose thickness becomes thick gradually, which is placed on the same optical axis. CONSTITUTION:With respect to an optical waveguide, an area of an end face is enlarged in the coupling part of an optical fiber and an element, and also, the optical waveguide is removed so that the optical path length of the interval of a flat end face of an element in an optical integrated circuit becomes about the integer multiple of half of the wavelength to be used. In such a way, since the waveguide is widened in the thickness direction in a coupling part to the optical fiber, coupling can be easily executed. Also, in the case of removing the optical waveguide, the effective refractive index of the optical waveguide of the element and the effective refractive index of an optically coupled element are aligned to the same degree, an air-gap between the optical waveguides of these two elements becomes an etalon and handled as a general multiple reflection, therefore, when the optical path length of this air-gap is the integer multiple of half of the wavelength, in the case of a plane wave, a reflection factor becomes '0', and the coupling efficiency of 100% can be obtained. |
| 公开日期 | 1988-07-06 |
| 申请日期 | 1986-12-26 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/65789]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | HITACHI LTD |
| 推荐引用方式 GB/T 7714 | MOROSAWA KENICHI,NAKAMURA HITOSHI,KATSUYAMA TOSHIO,et al. Optical waveguide structure and its manufacture. JP1988163407A. 1988-07-06. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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