基于TS-DFT高速光谱解调的FBG温度分布检测

doi:10.3969/j.issn.0255-8297.2023.02.006

Abstract

Abstract: In this paper, high speed demodulation of fiber Bragg grating (FBG) reflectivity spectrum is realized based on time-stretch dispersive Fourier transformation (TS-DFT). The demodulation system consists of mode-locked laser, optical circulator, dispersion compensating fiber, reference FBG, sensing FBG, and data collection and processing module. The time domain mapping spectra of sensing FBG under different temperature fields were obtained in experiments. By comparison with the measured spectra of the optical spectrum analyzer, the high-speed spectral demodulation ability of the system is verified, and the demodulation rate is 51.2 MHz. Combined with the spectral inversion algorithm, the temperature distribution along the axis of sensing FBG is obtained, and the spatial resolution is 200 mm. Therefore, temperature sensing with high speed and high spatial resolution is realized.

Key words: fiber Bragg grating (FBG), time-stretch dispersive Fourier transformation (TS-DFT), distributed sensing, high-speed demodulation

CLC Number:

P751.1

YANG Mei, CHEN Na, LIU Zhenmin, SHANG Yana, LIU Shupeng, CHEN Zhenyi, WANG Tingyun. FBG Temperature Distribution Detection Based on TS-DFT High Speed Spectral Demodulation[J]. Journal of Applied Sciences, 2023, 41(2): 252-261.

References

[1] Ghimire P, De Vega A R, Beczkowski S, et al. Improving power converter reliability:online monitoring of high-power IGBT modules[J]. IEEE Industrial Electronics Magazine, 2014, 8(3):40-50.
[2] Mohammed A, Hu B R, Hu Z D, et al. Distributed thermal monitoring of wind turbine power electronic modules using FBG sensing technology[J]. IEEE Sensors Journal, 2020, 20(17):9886-9894.
[3] Yang Y Y, Zhang Q H, Zhang P J. A fast IGBT junction temperature estimation approach based on ON-state voltage drop[J]. IEEE Transactions on Industry Applications, 2021, 57(1):685-693.
[4] Guo W S, Ma M Y, Wang H, et al. A thermal estimation method for IGBT module adaptable to operating conditions[J]. IEEE Transactions on Power Electronics, 2021, 36(6):6147-6152.
[5] 沈小燕, 韩娅, 张良岳, 等. FBG分布式非均匀应变重构准确度分析研究[J]. 光子学报, 2016, 45(12):40-47. Shen X Y, Han Y, Zhang L Y, et al. Analysis on the FBG distributed non-uniform strain reconstruction precision[J]. Acta Photonica Sinica, 2016, 45(12):40-47. (in Chinese)
[6] Etezad M, Kahrizi M, Khorasani K. Analysis of temperature and strain changes profiles by using fiber Bragg grating sensors[C]//SPIE Defense, Security, and Sensing, Fiber Optic Sensors and Applications VII, Orlando, Florida, USA. 2010, 7677:138-150
[7] Wang H T, Zhang G Z, Zheng S J. Reconstruction of the nonuniform strain profile for fiber Bragg grating using dynamic particle swarm optimization algorithm and its experimental verification[J]. Optical Engineering, 2013, 52(10):107103.
[8] Goda K, Tsia K K, Jalali B. Amplified dispersive Fourier-transform imaging for ultrafast displacement sensing and barcode reading[J]. Applied Physics Letters, 2008, 93(13):131109.
[9] Runge A F J, Broderick N G R, Erkintalo M. Observation of soliton explosions in a passively mode-locked fiber laser[J]. Optica, 2015, 2(1):36-39.
[10] Wu J L, Xu Y Q, Xu J J, et al. Ultrafast laser-scanning time-stretch imaging at visible wavelengths[J]. Light:Science & Applications, 2017, 6(1):196-206.
[11] Dennis M L, Putnam M A, Kang J U, et al. Grating sensor array demodulation by use of a passively mode-locked fiber laser[J]. Optics Letters, 1997, 22(17):1362-1364.
[12] Lei M, Zou W W, Li X, et al. Ultrafast FBG interrogator based on time-stretch method[J]. IEEE Photonics Technology Letters, 2016, 28(7):778-781.
[13] Wang C, Yao J P. Ultrafast and ultrahigh-resolution interrogation of a fiber Bragg grating sensor based on interferometric temporal spectroscopy[J]. Journal of Lightwave Technology, 2011, 29(19):2927-2933.
[14] Lei C, Guo B S, Cheng Z Z, et al. Optical time-stretch imaging:principles and applications[J]. Applied Physics Reviews, 2016, 3(1):011102.
[15] 王志, 贺瑞敬, 刘艳格. 时间拉伸色散傅里叶变换在被动锁模光纤激光器研究中的应用[J]. 中国激光, 2019, 46(5):21-31. Wang Z, He R J, Liu Y G. Applications of time-stretch dispersion Fourier transform technique in study on passively mode-locked fiber lasers[J]. Chinese Journal of Lasers, 2019, 46(5):21-31. (in Chinese)
[16] Goda K, Jalali B. Dispersive Fourier transformation for fast continuous single-shot measurements[J]. Nature Photonics, 2013, 7(2):102-112.
[17] Erdogan T. Fiber grating spectra[J]. Journal of Lightwave Technology, 1997, 15(8):1277-1294.
[18] Ding Y T, Chen N, Chen Z Y, et al. Dynamic temperature monitoring and control with fully distributed fiber Bragg grating sensor[C]//Photonics Asia 2010, Optics in Health Care and Biomedical Optics IV, Beijing, China. 2010, 7845:45-50.

FBG Temperature Distribution Detection Based on TS-DFT High Speed Spectral Demodulation

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 3

Recommended Articles

Metrics

Comments

[1]	LIU Shuai, WANG Zhi, WANG Aiqing, LI Shijian, TU Dongsheng, ZHENG Yu, NUERMAIMAITI·Wumaierjiang. Fracturing Monitoring of Oil-Wells Using Microstructured Optical Fiber Based Distributed Sensing [J]. Journal of Applied Sciences, 2022, 40(2): 190-203.
[2]	GUI Xin, LI Zhengying, WANG Honghai, WANG Lixin, GUO Huiyong. Review of Distributed Optical Fiber Sensing Technology and Application Based on Large-Scale Grating Array Fiber [J]. Journal of Applied Sciences, 2021, 39(5): 747-776.
[3]	YANG Ming-hong, WANG Gao-peng, DAI Ji-xiang, JIANG De-sheng. Application-Oriented Fiber Optic Hydrogen Sensing Technology [J]. Journal of Applied Sciences, 2018, 36(1): 1-19.