| 基于分布反馈激光器布里渊散射的高精度光谱测量 |
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| 引用本文： | 张震伟,郑万福,张彩霞,康娟,徐贲,李裔.基于分布反馈激光器布里渊散射的高精度光谱测量[J].光电子．激光,2013(9):1763-1767. |
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| 作者姓名： | 张震伟 郑万福 张彩霞 康娟 徐贲 李裔 |
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| 作者单位： | 中国计量学院 光电子技术研究所,浙江 杭州 310018;中国计量学院 光电子技术研究所,浙江 杭州 310018;中国计量学院 光电子技术研究所,浙江 杭州 310018;中国计量学院 光电子技术研究所,浙江 杭州 310018;中国计量学院 光电子技术研究所,浙江 杭州 310018;中国计量学院 光电子技术研究所,浙江 杭州 310018 |
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| 基金项目： | 国家自然科学基金(61007051)和浙江自然科学基金(Y6100244)资助项目 (中国计量学院 光电子技术研究所,浙江 杭州 310018) |
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| 摘 要： | 实现了一种基于光纤中受激布里渊散射(SBS)效应 的高分辨率光谱测量技术。使用连续可调谐分布反馈(DFB) 激光器作为泵浦光,与待测信号光在单模光纤(SMF)中发生受激布里渊放大相互作用,由此 实现对待测光的高分 辨率光谱测量与分析。DFB激光器的波长扫描通过高精度温度调谐来实现。与相关报道 中使用的外腔 可调谐激光器对比,DFB激光器具有体积小、成本低的优势。同时在波长扫描过程中,对DFB 激光器的输出光进行自 拍频处理获得其实时扫描速率,以此校正激光器的实时扫描波长,提高测量准确度。实验 初步验证了本文高分辨率光谱测量技术的可行性,并获得了0.24pm 的光谱分辨率。
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| 关 键 词： | 受激布里渊散射(SBS) 分布反馈(DFB)激光器 光谱测量 自拍频 |
| 收稿时间： | 2013/2/28 0:00:00 |
High resolution optical spectrum measurement based on stimulated Brillouin scattering using DFB lasers |
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| Affiliation: | Institute of Optoelectronic Technology,China Jiliang University,Hangzhou 310018,China;Institute of Optoelectronic Technology,China Jiliang University,Hangzhou 310018,China;Institute of Optoelectronic Technology,China Jiliang University,Hangzhou 310018,China;Institute of Optoelectronic Technology,China Jiliang University,Hangzhou 310018,China;Institute of Optoelectronic Technology,China Jiliang University,Hangzhou 310018,China;Institute of Optoelectronic Technology,China Jiliang University,Hangzhou 310018,China |
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| Abstract: | In this paper,a high resolution optica l spectrum measurement technology based on stimulated Brillouin scattering (SBS) in optical fibers is presented.A continuo usly tunable distributed feedback (DFB) laser is used as pump source.It i nteracts with signal li ght under test in single mode optical fibers via stimulated Brillouin amplification effect.The wavelength scanning of DFB laser is achieved by high precision temperature tuning.Compared with external-cavity tuning lasers used in previous similar studies,the DFB laser has many advantages,such as compact size,low cost,and b etter vibration resistance performance.In order to improve the measurement precision,the outpu t light of DFB laser in tuning is self-beat and the beat frequency is process ed to determine the real-time sweep velocity and wavelength.The feasibility of the high precision optical spectrum measuremen t technology is demonstrated in the measurements of two lasers,and the optical s pectrum resolution of about 0.24pm is obtained. |
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| Keywords: | stimulated Brillouin scattering (SBS) distributed feedback (DFB) laser optical spectrum measurement self-beating frequency |
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