材料科学
光学
法布里-珀罗干涉仪
激光阈值
干涉测量
光纤
波长
激光器
光纤传感器
光电子学
自由光谱范围
物理
作者
Hui Zou,Lei Ma,Hui Xiong,Yunshan Zhang,Yong Tao Li
出处
期刊:Laser Physics
[IOP Publishing]
日期:2017-12-04
卷期号:28 (1): 015102-015102
被引量:13
标识
DOI:10.1088/1555-6611/aa94dd
摘要
A ring laser temperature sensor based on a novel reflective fiber Fabry–Perot (F–P) interferometer air cavity is proposed and experimentally demonstrated. The reflective F–P air cavity, which consists of a segment of glass capillary inserted between two single–mode fibers, is utilized as a sensing element as well as as a filter in the fiber ring cavity. As temperature increases, the reflection spectra of the F–P sensor move towards the longer wavelength, and then cause lasing wavelength shifts. By monitoring the variation of lasing wavelength, we obtain a temperature sensor system with a high temperature sensitivity of 0.249 nm °C−1, a narrow 3 dB bandwidth of 0.1514 nm, and a high signal-to-noise ratio of 52 dB. Moreover, it is convenient to fabricate the sensor head, and the stability is very good, giving it a wide range of applications.
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