| DFB激光器调谐过程的动态线宽特性 |
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| 引用本文： | 刘景旺,杜振辉,齐汝宾,徐可欣.DFB激光器调谐过程的动态线宽特性[J].纳米技术与精密工程,2012,10(4):332-336. |
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| 作者姓名： | 刘景旺 杜振辉 齐汝宾 徐可欣 |
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| 作者单位： | 1. 天津大学精密测试技术及仪器国家重点实验室,天津300072;北华航天工业学院基础部,廊坊065000
2. 天津大学精密测试技术及仪器国家重点实验室,天津,300072 |
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| 基金项目： | 国家自然科学基金重点资助项目，精密测试技术及仪器国家重点实验室资助项目，河北省高等教育学会“十二五”规划资助项目，河北省廊坊市科技支撑计划资助项目 |
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| 摘 要： | 为了获取分布反馈(DFB)激光器在调谐过程的动态线宽特性,提出一种基于光纤延时自外差的激光动态线宽测量方法,对于激光器线宽和测量原理做了理论分析.对商品化DFB激光器的实验结果表明:在整个电流工作范围内,激光动态线宽为20.38～4.73 MHz;工作电流为最大电流的0.58～0.66倍时,激光器的动态线宽最窄,激光器动态线宽最佳工作电流为最大电流的0.5～0.8倍.
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| 关 键 词： | DFB激光器 动态线宽 光纤延时自外差 电流调谐 |
Dynamic Linewidth Characteristics of the DFB Laser in Tuning Process |
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| LIU Jing-wang
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DU Zhen-hui
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QI Ru-bin
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XU Ke-xin.Dynamic Linewidth Characteristics of the DFB Laser in Tuning Process[J].Nanotechnology and Precision Engineering,2012,10(4):332-336. |
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| Authors: | LIU Jing-wang DU Zhen-hui QI Ru-bin XU Ke-xin |
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| Affiliation: | 1(1.State Key Laboratory of Precision Measuring Technology and Instruments,Tianjin University,Tianjin 300072,China; 2.Department of Fundamental Science,North China Institute of Aerospace Engineering,Langfang 065000,China) |
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| Abstract: | In order to acquire the dynamic linewidth characteristics of DFB laser in tuning process,a method based on fiber delay self-heterodyne interferometer(FDSHI) was proposed.Laser dynamic linewidth and measurement principle were theoretically analyzed.Experiments results on commercial DFB laser indicate that the laser dynamic linewidth in the whole working process ranges from 20.38 MHz to 4.73 MHz.When the ratio of working current to maximum current is 0.58 to 0.66,the laser dynamic linewidth is the narrowest.Finally,it is concluded that the optimal operating current is between 0.5 and 0.8 times of the maximum one. |
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| Keywords: | DFB laser dynamic linewidth all-fiber delayed self-heterodyne interferometer(FDSHI) electrically tunable |
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