Wide-Dynamic-Range High-Resolution Fiber Fabry-Perot Interferometric Sensor With Chirped Fiber Bragg Gratings

被引：11

作者：

Wada, Atsushi ^{[1
]}

Ikuma, Keisuke ^{[1
]}

Syoji, Masakatsu ^{[1
]}

Tanaka, Satoshi ^{[1
]}

Takahashi, Nobuaki ^{[1
]}

机构：

[1] Natl Def Acad, Yokosuka, Kanagawa 2398686, Japan

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2013年 / 31卷 / 19期

关键词：

Fiber gratings; Wavelength measurement; Optical pulses; Optical interferometry; Strain; Optical sensors; strain sensor; Chirped fiber Bragg grating; FabryPerot interferometer; fiber Bragg grating;

D O I：

10.1109/JLT.2013.2280279

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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 narrowwavelength 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.

引用

页码：3176 / 3180

页数：5

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