发明名称 |
Semiconductor laser module |
摘要 |
A semiconductor laser module (1) in which: the distance between a semiconductor laser chip (11) and a diffraction grating can be shortened; the light output spectrum is stabilized; and the output characteristic does not fluctuate due to the external condition. In the semiconductor laser module (1), a diffraction grating structure (FG) is constituted in an optical fiber (21) by at least two diffraction gratings (FG1,FG2) for reflecting light with different wavelengths respectively. The diffraction grating structure is formed in a place corresponding to the inside of the package or the inside of the coupling means. <IMAGE> |
申请公布号 |
EP0860917(B1) |
申请公布日期 |
2001.05.16 |
申请号 |
EP19980103039 |
申请日期 |
1998.02.20 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
HAMAKAWA, ATSUSHI;SHIGEHARA, MASAKAZU |
分类号 |
G02B6/34;G02B6/02;G02B6/42;H01S5/00;H01S5/022;H01S5/12;H01S5/125;H01S5/14 |
主分类号 |
G02B6/34 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|