Integrated type optical modulator
文献类型：专利
| 作者 | AJISAWA AKIRA |
| 专利号 | JP1991291617A |
| 著作权人 | NEC CORP |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Integrated type optical modulator |
| 英文摘要 | PURPOSE:To improve the coupling efficiency, to execute the modulation at a high speed and to make the wavelength chirping width small by forming an optical waveguide layer of the same structure and the same composition having light emission and absorption functions of light from a quantum well layer and a barrier layer having an energy gap being higher by 20 - 80meV than a quantum level of the quantum well layer. CONSTITUTION:In a laser area I and an optical modulator area II, an optical waveguide layer 3 of the same structure and the same composition having light emission and absorption functions of light is provided. Also, the optical waveguide layer 3 consists of single or plural quantum well layers 13, and a barrier layer 14 having an energy gap being higher by 20 - 80meV than a quantum level of the quantum well layer 13. Also, in the vicinity of the optical waveguide layer 3 of the laser area I, a diffraction grating 7 is provided, and on the laser area I, and on the optical modulator area II, an electrode 9 for injecting a current, and an electrode 10 for applying an electric field are formed independently, respectively. In such a way, optical coupling of 100% is obtained, and also, it can be formed by single crystal growth, therefore, the manhour is small and easy and the yield is enhanced, and moreover, high speed modulation can be executed, and the wavelength chirping width becomes small. |
| 公开日期 | 1991-12-20 |
| 申请日期 | 1990-04-10 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/43973]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | NEC CORP |
| 推荐引用方式 GB/T 7714 | AJISAWA AKIRA. Integrated type optical modulator. JP1991291617A. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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