| 用光纤准直耦合光路测量大气光学湍流 |
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| 引用本文： | 梅海平,黄红莲,饶瑞中.用光纤准直耦合光路测量大气光学湍流[J].红外与激光工程,2007,36(6):910-913. |
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| 作者姓名： | 梅海平 黄红莲 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) |
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| 摘 要： | 阐述了利用光纤准直器对组成的耦合光路的附加损耗产生的机理，证明大气湍流运动可引起该光路的附加损耗发生随机变化。根据湍流大气光传播原理，推导出了耦合光功率与光路参数和湍流参数关系式。分析表明：实际湍流大气造成的随机附加损耗主要取决于湍流强度。实验验证了利用该光路可在很短的空气间隙内获得湍流强度的变化信息。
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| 关 键 词： | 光纤准直耦合 附加损耗 大气光学 湍流强度 |
| 文章编号： | 1007-2276（2007）06-0910-04 |
| 收稿时间： | 2007-02-15 |
| 修稿时间： | 2007-03-21 |
Fiber microlens collimation and coupling optical path in measuring atmospheric optical turbulence |
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| MEI Hai-ping,HUANG Hong-lian,RAO Rui-zhong.Fiber microlens collimation and coupling optical path in measuring atmospheric optical turbulence[J].Infrared and Laser Engineering,2007,36(6):910-913. |
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| Authors: | MEI Hai-ping HUANG Hong-lian RAO Rui-zhong |
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| Affiliation: | Center for Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031,China |
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| Abstract: | Theory of excess loss in coupling optical path consisting of a pair of fiber optical microlens collimators is presented. It is shown that atmospheric turbulence can result in random variation of the excess loss. According to the light propagation theory in turbulent atmosphere, the relation of coupling light power with optical path and turbulence parameters is derived. It is illuslrated that the random excess loss arisen from actual turbulent atmosphere is dominated by the turbulence intensity. Experiment demonslrates that the turbulence intensity variation information within a short-range air gap can be obtained. |
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| Keywords: | Fiber collimation and coupling Excess loss Atmospheric optics Turbulence intensity |
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