Distributed feedback type semiconductor laser device
文献类型：专利
| 作者 | MATSUMOTO KENJI; SUZUKI KAZUO |
| 发表日期 | 1988-07-04 |
| 专利号 | JP1988160391A |
| 著作权人 | TOSHIBA CORP |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Distributed feedback type semiconductor laser device |
| 英文摘要 | PURPOSE:To make the whole system compact by causing a set at least out of the distributed reflectors to be variable ones where optical propagation constant is variable, thereby controlling optical propagation constant of the variable distributed reflactors by output difference signals of respective photodetectors that are coupled with two distributed reflectors. CONSTITUTION:A semiconductor laser oscillation part is composed of a gain region 10, variable distributed reflectors 13 and 14 where propagation constant is variable as well as a phase adjustment region 15. Moreover, an oscillation wavelength measuring part is composed of a Y-shaped multipoint type waveguide 16 connecting to the variable distributed reflector 14, a distributed reflector 18 having a sligntly longer Bragg wavelength than that connecting to the above waveguide, the distributed reflector 20 having a slightly shorter wavegude than the Bragg wavelength, and photodetectors 19 and 21 connecting to the distributed reflectors 18 and 20. The variable distributed reflectors 13 and 14 are controlled by output difference signals of the photodetectors 19 and 21 and in this way, oscillation wave lengths are controlled. Then, since the gain region 10 is controlled by the output sum signals of the phtodetectors 19 and 21, light output powers can be controlled. |
| 公开日期 | 1988-07-04 |
| 申请日期 | 1986-12-24 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/88656]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | TOSHIBA CORP |
| 推荐引用方式 GB/T 7714 | MATSUMOTO KENJI,SUZUKI KAZUO. Distributed feedback type semiconductor laser device. JP1988160391A. 1988-07-04. |
入库方式： OAI收割
来源：西安光学精密机械研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。