Optical element
文献类型：专利
| 作者 | KATSUYAMA TOSHIO; NAKAMURA HITOSHI; INOUE HIROAKI; SAKANO SHINJI; MATSUMURA HIROYOSHI |
| 发表日期 | 1987-07-28 |
| 专利号 | JP1987171177A |
| 著作权人 | HITACHI LTD |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Optical element |
| 英文摘要 | PURPOSE:To improve the efficiency of the optical coupling of a light-emitting element and an optical waveguide largely by burying the light-emitting element into the optical waveguide wave-guiding light in a monolithic manner. CONSTITUTION:A waveguide 2 is composed of InGaAsP, and an absorption-edge wavelength is brought to 3mum. The waveguide 2 is 10mum wide and 5mum thick. A distributed feedback type semiconductor layer 3 is buried into the waveguide. InGaAsP is selected as the component of an active layer 4 so that the oscillation wavelength of a semiconductor laser reaches 55mum. The active layer is 0.3mum thick and 5mum wide. An electrode is formed to the upper section of a P-InGaAsP in the laser section. When the laser is oscillated, the efficiency of optical coupling of 90% is acquired. Accordingly, characteristics are improved remarkably at all times as compared to the efficiency of optical coupling of 30% at the time when the distributed feedback type semiconductor laser and the optical waveguide are coupled. |
| 公开日期 | 1987-07-28 |
| 申请日期 | 1986-01-24 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/87424]  |
| 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 | KATSUYAMA TOSHIO,NAKAMURA HITOSHI,INOUE HIROAKI,et al. Optical element. JP1987171177A. 1987-07-28. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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