法布里-珀罗干涉仪
花招
光学
材料科学
谐振器
光纤传感器
压力传感器
光纤
折射率
振膜(声学)
压力测量
温度测量
纤维
光电子学
声学
物理
振动
波长
复合材料
量子力学
气象学
热力学
作者
Simon Pevec,Denis Đonlagić
出处
期刊:Applied Optics
[The Optical Society]
日期:2012-06-29
卷期号:51 (19): 4536-4536
被引量:125
摘要
This article presents a miniature, high-sensitivity, all-silica Fabry–Perot fiber-optic sensor suitable for simultaneous measurements of pressure and temperature. The proposed sensor diameter does not exceed 125 μm and consists of two low-finesse Fabry–Perot resonators created at the tip of an optical fiber. The first resonator is embodied in the form of a short air cavity positioned at the tip of the fiber. This resonator utilizes a thin silica diaphragm to achieve the sensor’s pressure response. The second resonator exploits the refractive index dependence of silica fiber in order to provide the proposed sensor’s temperature measurement function. Both resonators have substantially different lengths that permit straightforward spectrally resolved signal processing and unambiguous determination of the applied pressure and temperature.
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