Sinusoidal-Core Long Period Fiber Grating for Refractive Index Measurement

被引：15

作者：

Ma, Yiwei ^{[1
]}

Su, Chunbo ^{[1
]}

Dai, Zizhao ^{[1
]}

Tian, Tian ^{[1
]}

Yang, Xinghua ^{[1
]}

Geng, Tao ^{[1
]}

Yuan, Libo ^{[2
]}

机构：

[1] Harbin Engn Univ, Key Lab In Fiber Integrated Opt, Minist Educ China, Harbin 150001, Peoples R China

[2] Guilin Univ Elect Technol, Photon Res Ctr, Guilin 541004, Peoples R China

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2022年 / 40卷 / 14期

基金：

中国国家自然科学基金;

关键词：

Optical fiber sensors; Sensors; Optical fiber theory; Heating systems; Temperature measurement; Refractive index; Temperature sensors; Long period fiber grating (LPFG); RI measurement; sinusoidal-; core; TEMPERATURE; SENSOR; SENSITIVITY; CURVATURE; WRITTEN; LASER;

D O I：

10.1109/JLT.2022.3168318

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Optic fiber sensors for refractive index (RI) measurement have brought about widespread attention in an extensive range owing to their unique properties. In this paper, we theoretically analyzed and experimentally verified a brand-new type of long period fiber grating with two resonant peaks. This structure is obtained by side-polishing method and melting tapered method. Firstly, a single-mode fiber (SMF) is produced into staggered V-shaped grooves on symmetrical sides by high-frequency CO2 laser. It is then heated and stretched by optic fiber melting tapered system for bending the core towards two-sides grooves. The sinusoidal core is closer to external environment and exhibits a stronger refractive index modulation, which prompts this structure more sensitive to RI. The structure possesses two resonant peaks of 1382.6 nm (dip-1) and 1473.4 nm (dip-2), which can be used to measure temperature and RI simultaneously. The experimental results present that the maximum RI sensitivity of the proposed sensor exhibits 620 nm/RIU (RI unit) in dip-2. Furthermore, compact sensing area, low cost and strong mechanical property of the proposed sensor make itself more suitable for high-accuracy RI measurement.

引用

页码：4903 / 4910

页数：8

共 32 条

[1] U-bent plastic optical fiber probes as refractive index based fat sensor for milk quality monitoring [J].

Annasamy, Gowri ;

Rajamani, Allwyn S. ;

Bandaru, Ramakrishna ;

Sai, V. V. R. .

OPTICAL FIBER TECHNOLOGY, 2019, 47 :15-20

[2] Effect of induced inner curvature on refractive index sensitivity in internally tilted long-period gratings [J].

Arjmand, Mojtaba ;

Chiavaioli, Francesco ;

Berneschi, Simone ;

Baldini, Francesco ;

Soltanolkotabi, Mahmood ;

Trono, Cosimo .

OPTICS LETTERS, 2016, 41 (07) :1443-1446

[3] Simultaneous Measurement of Refractive Index and Temperature Based on NFN Structure [J].

Bai, Yunlong ;

Yin, Bin ;

Liu, Chao ;

Liu, Shuo ;

Lian, Yudong ;

Jian, Shuisheng .

IEEE PHOTONICS TECHNOLOGY LETTERS, 2014, 26 (21) :2193-2196

[4] Design of turn around point long period fiber grating sensor with Au-nanoparticle self monolayer [J].

Bandyopadhyay, Sankhyabrata ;

Basumallick, Nandini ;

Bysakh, Sandip ;

Dey, Tanoy Kumar ;

Biswas, Palas ;

Bandyopadhyay, Somnath .

OPTICS AND LASER TECHNOLOGY, 2018, 102 :254-261

[5] Optical fiber long-period grating sensors [J].

Bhatia, V ;

Vengsarkar, AM .

OPTICS LETTERS, 1996, 21 (09) :692-694

[6] Novel Compact and Low-Cost Ultraweak Fabry-Perot Interferometer as a Highly Sensitive Refractive Index Sensor [J].

Chen, Pengcheng ;

Shu, Xuewen ;

Cao, Haoran .

IEEE PHOTONICS JOURNAL, 2017, 9 (05)

[7] Specially designed long period grating with internal geometric bending for enhanced refractive index sensitivity [J].

Chiavaioli, F. ;

Trono, C. ;

Baldini, F. .

APPLIED PHYSICS LETTERS, 2013, 102 (23)

[8] Femtomolar Detection by Nanocoated Fiber Label-Free Biosensors [J].

Chiavaioli, Francesco ;

Zubiate, Pablo ;

Del Villar, Ignacio ;

Zamarreno, Carlos R. ;

Giannetti, Ambra ;

Tombelli, Sara ;

Trono, Cosimo ;

Arregui, Francisco J. ;

Matias, Ignacio R. ;

Baldini, Francesco .

ACS SENSORS, 2018, 3 (05) :936-943

[9] Refractive Index Sensor Based on Graphene Oxide-Coated Long-Period Fiber Grating Inscribed in a Two-Mode Fiber [J].

Dong, Jie ;

Sang, Mei ;

Wang, Shuang ;

Xu, Tianhua ;

Yang, Lei ;

Han, Yingdong ;

Zhao, Fan ;

Liu, Tiegen .

IEEE ACCESS, 2020, 8 (08) :109028-109037

[10] Simultaneous measurement of refractive index and temperature using a hybrid-grating sensor [J].

Fan, Xiaojun ;

Jiang, Junfeng ;

Zhang, Xuezhi ;

Liu, Kun ;

Wan, Shuang ;

Liu, Tiegen .

APPLIED PHYSICS EXPRESS, 2019, 12 (11)

← 1 2 3 4 →