Integrated optical modulator
文献类型：专利
| 作者 | NUMAI TAKAAKI |
| 发表日期 | 1991-08-22 |
| 专利号 | JP1991192788A |
| 著作权人 | NEC CORP |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Integrated optical modulator |
| 英文摘要 | PURPOSE:To improve the optical coupling of a semiconductor laser with a modulator and to obtain an integrated optical modulator normal in electrical property by a method wherein an undoped optical guide layer possessing both an optical wave guide and an optical absorbing function is provided in common to a laser region and a modulation region. CONSTITUTION:An undoped optical waveguide layer 120 possessing both an optical wave guide and an optical absorbing function is provided in common to a laser region 100 and a modulation region 200, an active layer 140 is formed on the optical waveguide layer 120 in the laser region 100, a second conductivity type clad layer 150 is formed on the active layer 140, a second conductivity type clad layer 160 is provided onto the modulation region 200, and a diffraction grating which functions to determine the oscillation frequency of a laser is provided adjacent to the active layer 140. The forbidden bandwidth of the optical waveguide layer 120 is so set as to be larger than the oscillation frequency energy of a laser by 30-80meV, a current injection electrode 300 is provided onto the clad layer in the laser region, and a voltage applying electrode 300 is formed in the modulation region. By this setup, an optical coupling between a semiconductor laser and a modulator is excellent and an integrated optical modulator is normal in electrical property. |
| 公开日期 | 1991-08-22 |
| 申请日期 | 1989-12-21 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/84412]  |
| 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 | NUMAI TAKAAKI. Integrated optical modulator. JP1991192788A. 1991-08-22. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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