High-temperature and stress response behavior of femtosecond laser pulses inscribed eccentric fiber Bragg gratings

被引：1

作者：

Jiang, Peng ^{[1
,2
,3
]}

Xu, Qiang ^{[1
,2
,3
]}

Zhang, Rui ^{[1
]}

Bai, Haiping ^{[4
]}

Li, Kang ^{[5
]}

Copner, Nigel ^{[5
]}

Gong, Yongkang ^{[6
]}

机构：

[1] Baoji Univ Arts & Sci, Coll Phys & Optoelect Technol, Baoji 721016, Peoples R China

[2] Engn Technol Res Ctr Ultrafast Opt & Adv Mat Baoji, Baoji 721016, Peoples R China

[3] Baoji Key Lab Micronano Optoelect & Terahertz Tech, Baoji 721016, Peoples R China

[4] Inner Mongolia Agr Univ, Coll Sci, Hohhot 010018, Peoples R China

[5] Univ South Wales, Sch Engn, Cardiff CF37 1DL, Wales

[6] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, Wales

来源：

HELIYON | 2023年 / 9卷 / 06期

关键词：

Eccentric fiber Bragg gratings; Femtosecond laser; High temperature; Strain; Sensor; REFRACTIVE-INDEX SENSOR; STRAIN;

D O I：

10.1016/j.heliyon.2023.e17185

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Eccentric fiber Bragg grating (EFBG) is inscribed in standard communication single-mode fiber using femtosecond laser pulses, and the temperature and strain sensing characteristics are experimentally demonstrated and analyzed. The EFBG exhibits strong thermal stability and good robustness in high-temperature measurement up to 1000 degrees C, and undergoes different thermal sensitivities during Bragg peak and the strong resonance coupled cladding spectral comb. The temperature sensitivity linearly increases with respect to the effective index of the resonant modes. Such a situation also occurs in axial strain measurement. These characteristics are of high interest for multiparametric sensing at high temperatures.

引用

页数：8

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