Combined algorithm of fibonacci-MMSE for optical fiber Fabry-Perot sensor

被引：0

作者：

Yin, Jia-Di ^{[1
,2
]}

Zhou, Ci-Ming ^{[1
,2
]}

Ou, Yi-Wen ^{[1
,2
]}

Li, Meng-Meng ^{[1
,2
]}

机构：

[1] National Engineering Laboratory of Fiber Sensing Technology, Wuhan University of Technology, Wuhan

[2] Key Laboratory of Fiber Optic Sensing Technology and Information Processing (Wuhan University of Technology), The Ministry of Education, Wuhan

来源：

Guangzi Xuebao/Acta Photonica Sinica | 2015年 / 44卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Demodulation; Error analysis; Fabry-Perot interferometers; Fibonacci search technique; High speed; Mean square error; Resolution;

D O I：

10.3788/gzxb20154409.0906002

中图分类号：

学科分类号：

摘要：

A combined algorithm of minimum mean square error estimation and Fibonacci method for fiber Fabry-Perot interferometer was proposed. This united algorithm uses the Fibonacci method to quickly search a series of cavity length estimators and finds the one as demodulation gap which corresponds to the minimum mean square error value. The relationship between iteration number and demodulation accuracy was analyzed by simulation, and a temperature measurement experiment was carried out. The results show that, the average error of this algorithm is less than 2×10-5 pm theoretically, linear fit of actual cavity length is above 0.9999, and dynamic range is up to 2.5 mm. In the experiment, the resolution of algorithm is 0.15 nm, corresponding to a temperature resolution of 0.03℃ with quick demodulation time 0.03 s, both high resolution and fast demodulation speed can be achieved. ©, 2015, Chinese Optical Society. All right reserved.

引用

页数：6

共 16 条

[1]

Jiang Y., Ding W.-H., Recent developments in fiber optics spectral white-light interferometry, Photonic Sensors, 1, 1, pp. 62-71, (2011)

[2]

Rong Q.-Z., Sun H., Qiao X.-G., Et al., A miniature fiber-optic temperature sensor based on a Fabry-Perot interferometer, Journal of Optics, 14, 4, pp. 1-6, (2012)

[3]

Zhang Y.-N., Yuan L., Lan X.-W., Et al., High temperature fiber-optic Fabry-Perot interferometric pressure sensor fabricated by femtosecond laser, Optics Letters, 38, 22, pp. 4609-4612, (2013)

[4]

Wu D., Huang W., Wang G.-Y., Et al., In-line fiber Fabry-Perot refractive index tip sensor based on photonic crystal fiber and spectrum differential integration method, Optics Communications, 313, pp. 270-275, (2014)

[5]

Yu B., Wang A.-B., Gary R.P., Analysis of fiber Fabry-Perot interferometric sensors using low-coherence light sources, Journal of Lightwave Technology, 24, 4, pp. 1758-1767, (2006)

[6]

Li C.-C., Wang M., Xia W., Et al., A novel Fabry-Perot micro-displacement sensor based on intensity demodulation method, Acta Optica Sinica, 34, 6, pp. 280-285, (2014)

[7]

Jiang Y., High-resolution interrogation technique for fiber optic extrinsic Fabry-Perot interferometric sensors by the peak-to-peak method, Applied Optics, 47, 7, pp. 923-925, (2008)

[8]

Zhang P., Zhu Y., Chen W.-M., A study on fourier transformation demodulation theory of the gap of optical fiber Fabry-Perot sensor, Acta Photonica Sinica, 33, 12, pp. 1449-1452, (2004)

[9]

Lei X.-H., Chen W.-M., Zhang P., Demodulation method based on fourier transform with cubic spline interpolation for optical fiber Fabry-Perot sensors, Acta Photonica Sinca, 37, 4, pp. 705-708, (2008)

[10]

Shen F.-B., Wang A.-B., Frequency-estimation-based signal-processing algorithm for white-light optical fiber Fabry-Perot interferometer, Applied Optics, 44, 25, pp. 5206-5214, (2005)

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