发明名称 |
Gain-coupled distributed feedback semiconductor laser including first-order and second-order gratings |
摘要 |
A gain-coupled distributed feedback (DFB) semiconductor laser includes a grating formed by grooves through at least a part of an active region of a laser cavity. The DFB laser may be configured with a substantially pure gain-coupled grating and may be configured to provide facet power asymmetry. The grating may include at least a first-order grating section and a second-order grating section. A lasing wavelength may be obtained at the Bragg wavelength of the second-order grating section by substantially eliminating index coupling in the grating. The first-order grating section may act as a reflector for the lasing wavelength, thereby producing asymmetric power distribution in the laser cavity. |
申请公布号 |
US8121170(B2) |
申请公布日期 |
2012.02.21 |
申请号 |
US20080119586 |
申请日期 |
2008.05.13 |
申请人 |
MAKINO TOSHIHIKO;APPLIED OPTOELECTRONICS, INC. |
发明人 |
MAKINO TOSHIHIKO |
分类号 |
H01S5/00;H01S3/08 |
主分类号 |
H01S5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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