Femtosecond Laser-Inscribed High-Order Bragg Gratings in Large-Diameter Sapphire Fibers for High-Temperature and Strain Sensing

doi:10.1109/jlt.2018.2840699

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	Femtosecond Laser-Inscribed High-Order Bragg Gratings in Large-Diameter Sapphire Fibers for High-Temperature and Strain Sensing
	Chen, C.; Zhang, X. Y.; Yu, Y. S.; Wei, W. H.; Guo, Q.; Qin, L.; Ning, Y. Q.; Wang, L. J.; Sun, H. B.
	2018
发表期刊	Journal of Lightwave Technology
ISSN	0733-8724
卷号	36 期号:16 页码:3302-3308
摘要	Aiming for structural health monitoring applications in harsh environments, a high-order sapphire fiber Bragg grating (HO-SFBG) written with a femtosecond (fs) laser in a large-diameter sapphire fiber is demonstrated. The radial refractive index modulation area induced by scanning exposure is greater than 60% of the fiber cross-section area. The large mode overlapping area leads to a transmission resonance strength of approximately 3.0 dB. As demonstrated by numerical simulations of mode excitation and multimode resonance, each mode resonance is significantly superposed when the coupling coefficient is above 0.0005. A study of the high temperature and strain sensing characteristics of the HO-SFBG shows that each high-order resonance has different response characteristics. This type of large-diameter SFBG has important application potential for high-temperature smart materials with embedded fiber sensors.
关键词	Femtosecond (fs) laser fiber Bragg gratings optical fiber sensors sapphire fiber multimode optical-fibers composite structures sensor inscription radiation spectra single Engineering Optics Telecommunications
DOI	10.1109/jlt.2018.2840699
收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60997
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Chen, C.,Zhang, X. Y.,Yu, Y. S.,et al. Femtosecond Laser-Inscribed High-Order Bragg Gratings in Large-Diameter Sapphire Fibers for High-Temperature and Strain Sensing[J]. Journal of Lightwave Technology,2018,36(16):3302-3308.
APA	Chen, C..,Zhang, X. Y..,Yu, Y. S..,Wei, W. H..,Guo, Q..,...&Sun, H. B..(2018).Femtosecond Laser-Inscribed High-Order Bragg Gratings in Large-Diameter Sapphire Fibers for High-Temperature and Strain Sensing.Journal of Lightwave Technology,36(16),3302-3308.
MLA	Chen, C.,et al."Femtosecond Laser-Inscribed High-Order Bragg Gratings in Large-Diameter Sapphire Fibers for High-Temperature and Strain Sensing".Journal of Lightwave Technology 36.16(2018):3302-3308.

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