Xi'an Institute of Optics and Precision Mechanics,CAS
Distributed feedback type semiconductor laser device | |
其他题名 | Distributed feedback type semiconductor laser device |
MATSUMOTO KENJI; SUZUKI KAZUO | |
1988-07-04 | |
专利权人 | TOSHIBA CORP |
公开日期 | 1988-07-04 |
授权国家 | 日本 |
专利类型 | 发明申请 |
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. |
其他摘要 | 目的:通过使分布式反射器中的至少一组成为可变光学传播常数可变的,使整个系统紧凑,从而通过耦合的各个光电探测器的输出差分信号控制可变分布式反射器的光学传播常数有两个分布式反射器。组成:半导体激光振荡部分由增益区域10,可变分布反射器13和14,其传播常数可变以及相位调整区域15组成。此外,振荡波长测量部分由Y形多点组成连接到可变分布反射器14的类型波导16,具有比连接到上述波导的波长更短的布拉格波长的分布式反射器18,具有比布拉格波长稍短的波长的分布式反射器20,以及连接到布拉格波长的光电探测器19和21。分布式反射器18和20.可变分布反射器13和14由光电探测器19和21的输出差信号控制,并且以这种方式控制振荡波长。然后,由于增益区10由光电探测器19和21的输出和信号控制,所以可以控制光输出功率。 |
申请日期 | 1986-12-24 |
专利号 | JP1988160391A |
专利状态 | 失效 |
申请号 | JP1986306510 |
公开(公告)号 | JP1988160391A |
IPC 分类号 | H01S5/00 | H01S5/026 | H01S5/0625 | H01S5/068 | H01S5/0683 | H01S5/12 | H01S3/133 | H01S3/18 |
专利代理人 | - |
代理机构 | - |
文献类型 | 专利 |
条目标识符 | 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[P]. 1988-07-04. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
JP1988160391A.PDF(340KB) | 专利 | 开放获取 | CC BY-NC-SA | 请求全文 |
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。
修改评论