Characteristic selector for semiconductor laser
文献类型：专利
| 作者 | SASAKI YOSHIHIRO |
| 发表日期 | 1989-03-20 |
| 专利号 | JP1989074787A |
| 著作权人 | NEC CORP |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Characteristic selector for semiconductor laser |
| 英文摘要 | PURPOSE:To execute measurement including wavelength selection efficiently without an optical spectrum measurement system, which has been used, by arranging an optical filter, through which only a wave range required is transmitted, in front of a photodetector and measuring injection current versus optical output characteristics. CONSTITUTION:When the oscillation wavelength of a semiconductor laser 2 is kept near 1310nm, the transmittance of an optical filter 3 (wavelength transmission characteristics 7) is 95%, approximately the greater part of light emitted from the semiconductor laser 2 reach a photodetector 4, and injection current versus optical output characteristics 11 are approximately equal to the case of no optical filter 3. When the oscillation wavelength of the semiconductor laser 2 is kept near 1295nm, the amount of light entering the photodetector 4 reaches 50% of the amount of emission of the semiconductor laser 2, thus bringing the gradient of injection current versus optical output characteristics 12 to 50% of the case of no optical filter 3. Accordingly, when a standard for selection is set previously regarding the gradient of injection current versus optical output characteristics the characteristics of the semiconductor laser including wavelength selection are selected without measuring an optical spectrum. |
| 公开日期 | 1989-03-20 |
| 申请日期 | 1987-09-16 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/62614]  |
| 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 | SASAKI YOSHIHIRO. Characteristic selector for semiconductor laser. JP1989074787A. 1989-03-20. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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