Wide-dynamic-range high-resolution fiber Fabry-Perot interferometric sensor with chirped fiber Bragg gratings
Wide-dynamic-range high-resolution fiber Fabry-Perot interferometric sensor with chirped fiber Bragg gratings
复制标题
具有啁啾光纤布拉格光栅的宽动态范围高分辨率光纤法布里-珀罗干涉传感器
DOI：
10.1109/jlt.2013.2280279
复制
发表时间：
2013
影响因子：
4.7
通讯作者：
and Nobuaki Takahashi
中科院分区：
文献类型：
--
作者：
Atsushi Wada;Keisuke Ikuma;Masakatsu Syoji;Satoshi Tanaka;and Nobuaki Takahashi
我们提出了一种基于法布里-珀罗干涉仪的新型光纤传感器，该干涉仪具有啁啾光纤布拉格光栅（CFBG-FPI），使用窄波长扫描范围。在光纤布拉格光栅 (FBG) 传感器中，可以检测反射光谱中的波长变化。使用带有FBG的光纤法布里-珀罗干涉仪（FBG-FPI），可以提高分辨率，但其动态范围会减小。这里，CFBG-FPI 用于扩展动态范围。它在其宽反射带内有许多尖锐的透射率峰值。将窄波长扫描中透射率峰值位置的精确检测与进入扫描范围的峰值数量的变化相结合，在比 FBG-FPI 传感器大一百倍的宽动态范围内实现与 FBG-FPI 传感器一样精确的测量。
We present a novel optical fiber sensor based on a Fabry-Perot interferometer with chirped fiber Bragg gratings (CFBG-FPI) using a narrow wavelength sweep range. In a fiber Bragg grating (FBG) sensor, wavelength shifts in the reflection spectrum are detected. Using a fiber Fabry-Perot interferometer with FBGs (FBG-FPI), the resolution can be improved, but its dynamic range is reduced. Here, a CFBG-FPI is used to expand the dynamic range. It has many sharp transmittance peaks in its wide reflection band. Combining precise detection of the position of a transmittance peak position in a narrow wavelength sweep with the change in the number of peaks entering the sweep range, measurements as precise as FBG-FPI sensors are achieved over a wide dynamic range, a hundred times larger than that of FBG-FPI sensors.