| 光纤法布里-珀罗传感器及其高温应用 |
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| 作者姓名： | 毛国培 李金洋 史青 |
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| 作者单位： | 北京遥测技术研究所 |
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| 基金项目： | 民用航天“十三五”第三批预先研究项目（B0104）；中国科协青年人才托举工程（2018QNRC001） |
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| 摘 要： | 随着航天技术不断发展，大推力运载火箭等精细化设计需求日益增加，飞行器高温工况结构及流场状态感知已成为当前研究的关键环节。基于法布里-珀罗干涉结构的光纤传感器在高温、高压、狭小空间等特殊环境展现出独特优势，被视为下一代高温原位测量工具。介绍了法布里-珀罗传感器的基本结构及原理，并分别从温度、应变和压力监测方面介绍了法布里-珀罗高温传感技术研究进展以及未来的发展趋势。基于石英光纤的法布里-珀罗传感器能够应用于1000°C以下环境，对于1000°C以上环境，需要以蓝宝石光纤作为敏感元件和传光介质。
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| 关 键 词： | 光纤光学 法布里-珀罗腔传感器 高温测量 温度 应变 压力 |
Optic fiber Fabry-Perot sensor and its applications in high temperature |
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| Authors: | MAO Guopei LI Jinyang SHI Qing |
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| Affiliation: | Beijing Research Institute of Telemetry |
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| Abstract: | With the continuous development of aerospace technology, the demand for fine design of high-thrust launch vehicles and other related equipment is increasing. The aircraft structure and flow field state perception under high temperature working condition have become critical in current research. Fiber optic sensor based on Fabry-Perot cavity, which is regarded as the next generation measuring tool of high temperature in situation measurement, gradually shows the superiority in special environments such as high-temperature, high-pressure and narrow space. The basic structure and principle of Fabry-Perot sensor are introduced, as well as describes its recent progress and future development trends from the measurements of temperature, strain and pressure. The Fabry-Perot sensor based on silica fiber can be applied below 1000 °C, for environments more than 1000 °C, sapphire fiber is needed as the sensing element and light-transmission medium. |
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| Keywords: | Fiber optics Fabry-Perot sensors High temperature measuring Temperature Strain Pressure |
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