| Liquid-level Measurement with Fiber-optic Low Coherence Interferometer. Micrometer-resolution Approach |
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| 作者姓名： | YANG Yan-fang SUN Yu-xing SUN Chang-sen |
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| 作者单位： | Department of Physics，Dalian University of Technology，Dalian 116023，CHN |
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| 基金项目： | Dalian Science and Technology Foundation，国家自然科学基金 |
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| 摘 要： | According to the fact that the surface of liquid with low viscosity coefficient is a good reflection plane for a broadband light beam, liquid-level measurement in micrometer resolution is designed based on a fiber-optic low coherence interferometer in Michelson configuration. The wave front of the reflected light beam is well enough to form an interferogram with a beam reflected from an optic mirror mounted on a stepping scanning-motor. The central peak of the interferogram is read as a measure of the liquid level. Experimental results show that this noncontact method can reach a resolution of ±1.25 μm in the measurement range of 86 mm.
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| 关 键 词： | 纤维光学低相干干涉仪 液面 液位测量 测微计-分辨率法 |
| 文章编号： | 1007-0206（2007）02-0108-04 |
| 收稿时间： | 2006-10-08 |
| 修稿时间： | 2006-12-06 |
Liquid-level Measurement with Fiber-optic Low Coherence Interferometer:Micrometer-resolution Approach |
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| YANG Yan-fang,SUN Yu-xing,SUN Chang-sen.Liquid-level Measurement with Fiber-optic Low Coherence Interferometer. Micrometer-resolution Approach[J].Semiconductor Photonics and Technology,2007,13(2):108-111. |
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| Authors: | YANG Yan-fang SUN Yu-xing SUN Chang-sen |
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| Abstract: | According to the fact that the surface of liquid with low viscosity coefficient is a good reflection plane for a broadband light beam,liquid-level measurement in micrometer resolution is designed based on a fiber-optic low coherence interferometer in Michelson configuration.The wave front of the reflected light beam is well enough to form an interferogram with a beam reflected from an optic mirror mounted on a stepping scanning-motor.The central peak of the interferogram is read as a measure of the liquid level.Experimental results show that this noncontact method can reach a resolution of ±1.25 μm in the measurement range of 86 mm. |
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| Keywords: | liquid-level white-light interferometer micrometer-resolution |
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