Author:
Li Shaode,He Wei,Tan Qimeng,Liu Haochong,Li Zhihan,Zhu Lianqing
Abstract
Abstract
In this paper, the sensor was proposed by combination of grapefruit photonic crystal fiber (GPCF) and femtosecond laser fabricated fiber Bragg grating (FBG) based on Sagnac interferometer. The GPCF was sandwiched between two single-mode fibers (SMFS) to form a SMF-GPCF-SMF structure, which was based on intermodal interference. The FBG with a central wavelength of 1535.32 nm was inscribed through polyimide coating and cladding by the femtosecond laser point-by-point inscribing method. The spectrum drift data of sensing structure were collected and the dual-parameters matrix of temperature-strain was constructed to realize the simultaneous measurement of temperature and strain. The experimental results showed that the linear range of the strain measurement was from 0 με to 2,000 με at different temperature, the wavelength of FBG and GPCF was red drift and blue drift, respectively, the average strain sensitivity at different temperature was 1.25 pm/με and −2.05 pm/με, all the linearity R2 are higher than 0.999, and has the high repeatability. The linear range of temperature measurement was from 20 °C to 450 °C, the wavelength of FBG and GPCF was red drift and blue drift, respectively, the temperature sensitivity of FBG and GPCF was 15.17 pm °C−1 and −8.87 pm °C−1, the linearity was 0.99983 and 0.99989, respectively.
Funder
111 Project
Natural Science Foundation of Beijing Municipality
National Natural Science Foundation of China
Subject
Condensed Matter Physics,Mathematical Physics,Atomic and Molecular Physics, and Optics
Reference32 articles.
1. Strain measurement and defect detection with fiber-optic sensors embedded into the cement sample;Kosheleva;22nd Winter School on Continuous Media Mechanics (WSCMM),2021
2. Fiber optic polarization temperature sensor for biomedical and military security systems;Kyselak,2022
3. Optical fiber-based sensors for oil and gas applications;Johny;Sensors,2021
4. Assessment of the measurement performance of the multimodal fiber optic shape sensing configuration for a morphing wing section;Nazeer;Sensors,2022
5. Compact optical fiber sensor based on silica capillary tube for simultaneous high temperature and transverse load measurement;Jiewen;IEEE Photonics J.,2021
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献