Research on the elastic-optical coefficient of fiber-optic and the experimental measurement by fiber Bragg grating

被引：1

作者：

Xu, Mingzhu ^{[1
]}

Shi, Shuangjin ^{[1
]}

Zhang, Tianhang ^{[1
]}

Yang, Hongwei ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Optoelect Informat, Chengdu 610054, Sichuan, Peoples R China

来源：

OPTIK | 2019年 / 195卷

关键词：

Fiber-optic; Refractive index; Strain; Elastic-optical coefficient; Fiber Bragg grating; REFRACTIVE-INDEX; STRAIN;

D O I：

10.1016/j.ijleo.2019.163159

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The strain characteristics of fiber-optic refractive index (RI) is theoretically investigated, combined with practical application situations, including a systematic theoretical model to explain its physical nature and analyze its functional mechanism. The simplified analytical expression of elastic-optical coefficient is obtained, which is more direct than the existing ones. Besides, the change in RI of fiber-optic with strain is measured by a succinct method based on fiber Bragg grating (FBG) that is simple in structure and easy to operate. We got the conclusion that the variation of RI is negative linearly proportional to strain when optical fiber is stretched from the experimental results. As a result, the theoretical and experimental reduction rate of 0.45 x 10(-6)/mu epsilon and 0.44 x 10(-6)/mu epsilon, respectively. The elastic-optical coefficient of fiber-optic is measured and the measurement results agree well with the previous theoretical analysis. Furthermore, our work shows major application potential in fiber-optic strain sensor systems.

引用

页数：6

共 26 条

[1] Measurement of In-Fiber Refractive Index Change Using a Mach-Zehnder Interferometer [J].

Ahmed, Farid ;

Ahsani, Vahid ;

Jo, Seunghwan ;

Bradley, Colin ;

Toyserkani, Ehsan ;

Jun, Martin B. G. .

IEEE PHOTONICS TECHNOLOGY LETTERS, 2019, 31 (01) :74-77

[2] Wide Range Refractive Index Measurement Using a Multi-Angle Tilted Fiber Bragg Grating [J].

Chen, Xiaoyong ;

Xu, Jian ;

Zhang, Xuejun ;

Guo, Tuan ;

Guan, Bai-Ou .

IEEE PHOTONICS TECHNOLOGY LETTERS, 2017, 29 (09) :719-722

[3] Single weakly tilted FBG in 2-μm band capable of measuring temperature, axial strain, and surrounding refractive index [J].

Cheng, Dan ;

Yan, Fengping ;

Feng, Ting ;

Bai, Zhuoya ;

Zhang, Luna ;

Wang, Wei ;

Liu, Shuo ;

Zhou, Hong ;

Hou, Yafei .

OPTICAL ENGINEERING, 2018, 57 (09)

[4]

Coetzee W.Z., 2015, P AFRICON, P1

[5]

Ehrenreich H., 2001, SOLID STATE PHYS

[6]

El Sayed A., 2016, 2 DIMENSIONAL REFRAC

[7]

Fan Hang, 2017, SIMULTANEOUS MEASURE

[8]

Frojdh K., 2017, INT C OPT FIBR SENS

[9] Theoretical and experimental investigations on the temperature dependence of the refractive index of amorphous silica [J].

Guo, Yong ;

Wang, Zhi-Yong ;

Qiu, Qi ;

Su, Jun ;

Wang, Yunxiang ;

Shi, Shuangjin ;

Yu, Zhenfang .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2015, 429 :198-201

[10] Optic fiber sensor-based smart bridge cable with functionality of self-sensing [J].

He, Jianping ;

Zhou, Zhi ;

Ou, Jinping .

MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 2013, 35 (1-2) :84-94

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