| 载波调制型大气光学湍流光纤测量系统的实验研究 |
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| 引用本文： | 梅海平,郝磊,饶瑞中.载波调制型大气光学湍流光纤测量系统的实验研究[J].大气与环境光学学报,2008,3(5):321-325. |
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| 作者姓名： | 梅海平 郝磊 饶瑞中 |
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| 作者单位： | 中国科学院安徽光学精密机械研究所大气光学中心,安徽,合肥,230031 |
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| 基金项目： | 国家高技术研究发展计划(863计划)激光技术领域项目 |
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| 摘 要： | 介绍了利用载波调制型光纤Mach-Zehnder干涉仪测量大气光学湍流折射率起伏的原理,给出了载波调制信号的解调方法.实验研究表明,该系统测量大气折射率起伏方差的噪声水平为2.5×10-16.在真实的大气环境下,通过与传统温度脉动仪的对比测试分析表明,两者的探测结果无论在量级上还是在变化趋势上都有很好的一致性,这标志着大气湍流的光纤测量技术已初步迈入实用阶段.
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| 关 键 词： | 大气光学湍流 折射率起伏 光纤Mach-Zehnder干涉仪 调制解调 |
| 收稿时间： | 2008/6/8 |
Experimental Study on Carrier Modulated Fiber Optic Atmospheric Optical Turbulence Measurement System |
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| MEI Hai-ping,HAO Lei,RAO Rui-zhong.Experimental Study on Carrier Modulated Fiber Optic Atmospheric Optical Turbulence Measurement System[J].Journal of Atmospheric and Environmental Optics,2008,3(5):321-325. |
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| Authors: | MEI Hai-ping HAO Lei RAO Rui-zhong |
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| Affiliation: | MEI Hai-ping HAO Lei RAO Rui-zhong (Center for Atmospheric Optics,Anhui Institute of Optics , Fine Mechanics Chinese Academy of Sciences,Hefei 230031,China) |
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| Abstract: | Principle of measuring refractive index fluctuation in atmospheric optical turbulence by the usage of a carrier modulated fiber optical Mach-Zehnder interferometer is introduced, as well as the signal processing procedure. Experiments show that the noise level of the system C(2,n) variance is about 2.5×10－16. Comparison of the results with that of the traditional micro-thermal anemometer in the real atmosphere shows good agreement in the values and trends, which indicates that the fiber optic turbulence sensing technique is already applicable. |
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| Keywords: | atmospheric optical turbulence refractive index fluctuation fiber Mach-Zehnder interferometer modulation and demodulation |
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