Compact optical fiber sensor based on Vernier effect with speckle patterns

Zhao, Fang1; Lin, Weihao1,2; Guo, Penglai3; Hu, Jie1; Liu, Yuhui4; Liu, Shuaiqi1,2; Yu, Feihong1; Zuo, Guomeng1,5; Wang, Guoqing6; Liu, Huanhuan1; Chen, Jinna1; Li, Yi7; Shum, Perry ping1,5; Shao, Liyang1,5

2023-10-23

10.1364/OE.505104

OPTICS EXPRESS   影响因子和分区

1094-4087

We propose a Vernier effect-based sensor for temperature and salinity measurements. This sensor utilizes the correlation speckle pattern generated by spatial multimode interference and has undergone testing to validate its effectiveness. The speckle demodulation method is used to solve the problem of inconsistent envelope measurement when tracking with different upper and lower envelopes. The device consists of two Fabry Perot interferometers (FPIs) created by connecting hole core fiber (HCF) and erbium-doped fiber (EDF) in series. The speckle image produced by the interferometers is analyzed using the Zero means normalized cross-correlation (ZNCC) technique. The ZNCC value demonstrates a linear relationship with salinity and temperature, allowing for the measurement of these parameters. The sensor exhibits a temperature detection sensitivity of -0.0224 /degrees C and a salinity detection sensitivity of -0.0439/%. The sensor offers several advantageous features, including its compact size, low-cost manufacturing, high sensitivity, stability, and convenient reflection measurements. These characteristics make it a valuable tool for various applications. The proposed Vernier effect-based temperature and salinity sensor shows great potential for simultaneous monitoring and measurement of temperature and salinity in environments such as marine settings or industrial processes where accurate control of these parameters is crucial.

SCI ; EI

英语

第一 ; 通讯

Department of Natural Resources of Guangdong Province (GDNRC)[22] ; Science, Technology and Innovation Commission of Shenzhen Municipality[20220815121807001] ; Intelligent Laser Basic Research Laboratory[PCL2021A14-B1] ; Natural Science Foundation of Zhejiang Province[LY22F050004]

Optics

Optics

WOS:001097851600006

Optica Publishing Group

20234915164724

Fabry-Perot interferometers ; Fiber optic sensors ; Multimode fibers ; Speckle

Light/Optics:741.1 ; Fiber Optics:741.1.2 ; Optical Instruments:941.3

PHYSICS

Web of Science

1.Southern Univ Sci & Technol, Sch Elect & Elect Engn, Shenzhen 518055, Peoples R China
2.Univ Macau, Fac Sci & Technol, Dept Elect & Comp Engn, Taipa 999078, Macau, Peoples R China
3.Macau Univ Sci & Technol, Sch Comp Sci & Engn, Taipa 999078, Macau, Peoples R China
4.Hong Kong Polytech Univ, Dept Appl Phys, Hong Kong 999077, Peoples R China
5.Peng Cheng Lab, Shenzhen 518055, Guangdong, Peoples R China
6.Shenzhen Inst Informat Technol, Sch Microelect, Shenzhen 518172, Peoples R China
7.China Jiliang Univ, Coll Opt & Elect Technol, Hangzhou 310018, Peoples R China

Zhao, Fang,Lin, Weihao,Guo, Penglai,et al. Compact optical fiber sensor based on Vernier effect with speckle patterns[J]. OPTICS EXPRESS,2023,31(22):36940-36951.

Zhao, Fang.,Lin, Weihao.,Guo, Penglai.,Hu, Jie.,Liu, Yuhui.,...&Shao, Liyang.(2023).Compact optical fiber sensor based on Vernier effect with speckle patterns.OPTICS EXPRESS,31(22),36940-36951.

Zhao, Fang,et al."Compact optical fiber sensor based on Vernier effect with speckle patterns".OPTICS EXPRESS 31.22(2023):36940-36951.