| 光纤延迟线对激光器线宽测量的影响及修正 |
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| 引用本文： | 李舒然,林鹏,胡志凌,张爱玲.光纤延迟线对激光器线宽测量的影响及修正[J].天津理工大学学报,2012,28(3):27-29,45. |
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| 作者姓名： | 李舒然 林鹏 胡志凌 张爱玲 |
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| 作者单位： | 天津理工大学计算机与通信工程学院 天津市薄膜电子与通信器件重点实验室,天津,300384 |
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| 基金项目： | 国家大学生创新性实验计划 |
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| 摘 要： | 针对延迟线长度对拍频测量法的影响进行了理论分析,并找出了延迟线长度不同时测量线宽和激光本征线宽的关系模型.在此基础上对自制的窄线宽光纤激光器纵模线宽进行了测量.使用消除延迟线长度对线宽测量的影响的数据修正方法,得到的激光器的本征线宽为5.74 kHz.之后将实测数据分别与利用该方法得到的功率谱线型和标准洛伦兹线型进行比较,证明这种修正方法能够更准确的反映激光通过延迟线后的线型.
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| 关 键 词： | 光纤激光器 拍频 线型 光纤延迟线 |
Effect of fiber delay line on measurement of laser linewidth and data correction |
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| LI Shu-ran
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LIN Peng
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HU Zhi-ling
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ZHANG Ai-ling.Effect of fiber delay line on measurement of laser linewidth and data correction[J].Journal of Tianjin University of Technology,2012,28(3):27-29,45. |
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| Authors: | LI Shu-ran LIN Peng HU Zhi-ling ZHANG Ai-ling |
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| Institution: | (School of Computer and Communications Engineering,Tianjin Key Laboratory of Film Electronic and Communication Device,Tianjin University of Technology,Tianjin 300384,China) |
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| Abstract: | The lengths of the optical fiber delay line which influence the beat frequency measurement method are analyzed in this paper.A model of the relationship between power spectral linewidths and true linewidths were presented.On the basis analysis,the longitudinal-mode linewidth of the self-made fiber laser with narrow linewidth is measured.Considering the influence of the length of the optical fiber delay line,the true linewidth is calculated to be 5.74 kHz.Compare the emulational power spectrum linetype with standard Lorentz linetype,and prove that this method can accurately depict the linetypes of laser beam through a delay line. |
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| Keywords: | fiber laser beat frequency linetype fiber delay line |
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