发明名称 |
Low temperature distributed feedback laser with loss grating and method |
摘要 |
A low threshold distributed feedback (DFB) laser is constructed for improved performance at subzero temperatures. A loss grating is employed to enhance the probability that lasing occurs near the short wavelength side of the stopband and to counteract the effect of negative gain tilt that occurs when DFB lasers are positively detuned. A method of making DFB lasers from wafers with improved yield for low temperature side mode suppression ratio (SMSR) is also disclosed.
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申请公布号 |
US6477194(B1) |
申请公布日期 |
2002.11.05 |
申请号 |
US19990437424 |
申请日期 |
1999.11.15 |
申请人 |
AGERE SYSTEMS GUARDIAN CORP. |
发明人 |
ENG LARS E.;JAMBUNATHAN RAM;KAMATH KISHORE K.;ROBERTSON ALEXANDER;WILT DANIEL PAUL |
分类号 |
H01S5/10;H01S5/12;H01S5/343;(IPC1-7):H01S3/08;H01S5/00 |
主分类号 |
H01S5/10 |
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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