| 弱反馈光纤光栅外腔半导体激光器特性研究 |
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| 引用本文： | 薛林,赵华凤,李栩辉,叶亚斌.弱反馈光纤光栅外腔半导体激光器特性研究[J].中国激光,2001,28(10):877-880. |
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| 作者姓名： | 薛林 赵华凤 李栩辉 叶亚斌 |
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| 作者单位： | 清华大学电子工程系 |
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| 基金项目： | 国家“8 6 3”高技术计划 (86 3 30 7)资助项目 |
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| 摘 要： | 分析了弱反馈光纤光栅外腔半导体激光器的工作原理 ,将反馈作用等效为光子寿命的改变 ,利用激光器简化多模速率方程理论计算了外腔激光器输出功率和边模抑制比随光栅反射率的变化关系 ,得出外腔激光器存在光栅最佳反射率的结论。并对用不同反射率光栅作外腔的半导体激光器进行了实验比较 ,对此结论进行了验证。实验中获得了边模抑制比达 2 5dB的单模输出
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| 关 键 词： | 光纤光栅 外腔半导体激光器 多模速率方程 |
| 收稿时间： | 2000/7/24 |
Characteristic of the FBG External Cavity Semiconductor Laser with Weak Feedback |
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| XUE Lin,ZHAO Hua,feng,LI Xu,hui,YE Ya,bin.Characteristic of the FBG External Cavity Semiconductor Laser with Weak Feedback[J].Chinese Journal of Lasers,2001,28(10):877-880. |
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| Authors: | XUE Lin ZHAO Hua feng LI Xu hui YE Ya bin |
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| Abstract: | The theory of FBG external cavity semiconductor laser with weak feedback is simply explained. Regarding the effects of feedback as a change of photons′ life and using the simple multimodes rate equation, the effect of FBG reflectivity on both the output power and SMSR is revealed.The conclusion is that there exists an optimum FBG reflection. The experiments using FBGs with different reflection show the same conclusion. A single laser mode with 25 dB SMSR is achieved. |
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| Keywords: | fiber Bragg grating external cavity semiconductor laser multimodes rate equation |
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