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SGDX20190919094803949"],"award-info":[{"award-number":["JCYJ20200109105810074, SGDX20190919094803949"]}],"id":[{"id":"10.13039\/501100010877","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The existing optical strain sensors based on fiber Bragg grating (FBG) have limitations, such as a complex structure, a limited strain range (\u00b1200 \u03bc\u03b5) and poor linearity performance (R-squared value &lt; 0.9920); these limitations affect their potential practical applications. Here, four FBG strain sensors equipped with planar UV-curable resin are investigated. The proposed FBG strain sensors have a simple structure, a large strain range (\u00b11800 \u03bc\u03b5) and excellent linearity performance (R-squared value \u2265 0.9998); they further produce the following performances: (1) good optical properties, including an undistorted Bragg peak shape, narrow bandwidth (\u22123 dB bandwidth \u2264 0.65 nm) and a high side mode suppression ratio (SMSR, the absolute value of SMSR \u2265 15 dB); (2) good temperature sensing properties with high temperature sensitivities (\u226547.7 pm\/\u00b0C) and a good linearity performance (R-squared value \u2265 0.9990); and (3) excellent strain sensing properties with no hysteresis behavior (hysteresis error \u2264 0.058%) and excellent repeatability (repeatability error \u2264 0.045%). Based on their excellent properties, the proposed FBG strain sensors are expected to be applied as high-performance strain sensing devices.<\/jats:p>","DOI":"10.3390\/s23052811","type":"journal-article","created":{"date-parts":[[2023,3,6]],"date-time":"2023-03-06T02:28:34Z","timestamp":1678069714000},"page":"2811","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Advantageous Strain Sensing Performances of FBG Strain Sensors Equipped with Planar UV-Curable Resin"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2815-2818","authenticated-orcid":false,"given":"Xiaojin","family":"Li","sequence":"first","affiliation":[{"name":"Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China"},{"name":"Optical Fiber Sensing Engineering Technology R&D Center of Guangdong Province, T&S Communications Co., Ltd., Shenzhen 518118, China"}]},{"given":"Min","family":"Zheng","sequence":"additional","affiliation":[{"name":"Optical Fiber Sensing Engineering Technology R&D Center of Guangdong Province, T&S Communications Co., Ltd., Shenzhen 518118, China"}]},{"given":"Dan","family":"Hou","sequence":"additional","affiliation":[{"name":"Optical Fiber Sensing Engineering Technology R&D Center of Guangdong Province, T&S Communications Co., Ltd., Shenzhen 518118, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8918-6590","authenticated-orcid":false,"given":"Qiao","family":"Wen","sequence":"additional","affiliation":[{"name":"Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China"}]}],"member":"1968","published-online":{"date-parts":[[2023,3,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"303","DOI":"10.1098\/rsta.2006.1928","article-title":"An introduction to structural health monitoring","volume":"365","author":"Farrar","year":"2007","journal-title":"Philos. 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