{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,11]],"date-time":"2026-02-11T19:07:31Z","timestamp":1770836851401,"version":"3.50.1"},"reference-count":25,"publisher":"MDPI AG","issue":"21","license":[{"start":{"date-parts":[[2022,11,3]],"date-time":"2022-11-03T00:00:00Z","timestamp":1667433600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"NSFC","doi-asserted-by":"publisher","award":["62275096"],"award-info":[{"award-number":["62275096"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"NSFC","doi-asserted-by":"publisher","award":["IEC\\NSFC\\201015"],"award-info":[{"award-number":["IEC\\NSFC\\201015"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"NSFC","doi-asserted-by":"publisher","award":["62111530153"],"award-info":[{"award-number":["62111530153"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"NSFC","doi-asserted-by":"publisher","award":["2021Szvup089"],"award-info":[{"award-number":["2021Szvup089"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Royal Society International Exchanges 2020 Cost Share of United Kingdom","award":["62275096"],"award-info":[{"award-number":["62275096"]}]},{"name":"Royal Society International Exchanges 2020 Cost Share of United Kingdom","award":["IEC\\NSFC\\201015"],"award-info":[{"award-number":["IEC\\NSFC\\201015"]}]},{"name":"Royal Society International Exchanges 2020 Cost Share of United Kingdom","award":["62111530153"],"award-info":[{"award-number":["62111530153"]}]},{"name":"Royal Society International Exchanges 2020 Cost Share of United Kingdom","award":["2021Szvup089"],"award-info":[{"award-number":["2021Szvup089"]}]},{"name":"NSFC-RS Exchange Programme","award":["62275096"],"award-info":[{"award-number":["62275096"]}]},{"name":"NSFC-RS Exchange Programme","award":["IEC\\NSFC\\201015"],"award-info":[{"award-number":["IEC\\NSFC\\201015"]}]},{"name":"NSFC-RS Exchange Programme","award":["62111530153"],"award-info":[{"award-number":["62111530153"]}]},{"name":"NSFC-RS Exchange Programme","award":["2021Szvup089"],"award-info":[{"award-number":["2021Szvup089"]}]},{"name":"Science, Technology and Innovation Commission of Shenzhen Municipality","award":["62275096"],"award-info":[{"award-number":["62275096"]}]},{"name":"Science, Technology and Innovation Commission of Shenzhen Municipality","award":["IEC\\NSFC\\201015"],"award-info":[{"award-number":["IEC\\NSFC\\201015"]}]},{"name":"Science, Technology and Innovation Commission of Shenzhen Municipality","award":["62111530153"],"award-info":[{"award-number":["62111530153"]}]},{"name":"Science, Technology and Innovation Commission of Shenzhen Municipality","award":["2021Szvup089"],"award-info":[{"award-number":["2021Szvup089"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this paper, a novel inline optical fiber sensor for curvature and temperature measurement simultaneously has been proposed and demonstrated, which can measure two parameters with very little crosstalk. Two combinational mechanisms of anti-resonant reflecting optical waveguide and inline Mach\u2013Zehnder interference structure are integrated into a 3 mm-long single hole twin suspended core fiber (SHTSCF). The 85 \u03bcm hole core gives periodic several dominant resonant wavelengths in the optical transmission spectrum, acting as the anti-resonant reflecting optical waveguide (ARROW). The modes in two suspended cores and the cladding form the comb pattern. Reliable sensor sensitivity can be obtained by effective experiments and demodulation. Through intensity demodulation of the selected dip of Gaussian fitting, the curvature sensitivity can be up to \u22127.23 dB\/m\u22121. Through tracking the MZI dip for wavelength demodulation, the temperature sensitivity can be up to 28.8 pm\/\u00b0C. The sensor is simple in structure, compact, and has good response, which can have a bright application in a complex environment.<\/jats:p>","DOI":"10.3390\/s22218457","type":"journal-article","created":{"date-parts":[[2022,11,4]],"date-time":"2022-11-04T04:00:51Z","timestamp":1667534451000},"page":"8457","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Optical Fiber Sensor for Curvature and Temperature Measurement Based on Anti-Resonant Effect Cascaded with Multimode Interference"],"prefix":"10.3390","volume":"22","author":[{"given":"Yinqiu","family":"Gui","sequence":"first","affiliation":[{"name":"Wuhan National Laboratory for Optoelectronics (WNLO) and National Engineering Laboratory for Next Generation Internet Access System, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China"},{"name":"Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518057, China"}]},{"given":"Qian","family":"Shu","sequence":"additional","affiliation":[{"name":"Wuhan National Laboratory for Optoelectronics (WNLO) and National Engineering Laboratory for Next Generation Internet Access System, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China"},{"name":"Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518057, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8431-1444","authenticated-orcid":false,"given":"Ping","family":"Lu","sequence":"additional","affiliation":[{"name":"Wuhan National Laboratory for Optoelectronics (WNLO) and National Engineering Laboratory for Next Generation Internet Access System, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China"},{"name":"Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518057, China"},{"name":"Wuhan OV Optical Networking Technology Co., Ltd., Wuhan 430074, China"}]},{"given":"Jiajun","family":"Peng","sequence":"additional","affiliation":[{"name":"Wuhan National Laboratory for Optoelectronics (WNLO) and National Engineering Laboratory for Next Generation Internet Access System, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China"}]},{"given":"Jiangshan","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Electronics and Information Engineering, Huazhong University of Science and Technology, Wuhan 430074, China"}]},{"given":"Deming","family":"Liu","sequence":"additional","affiliation":[{"name":"Wuhan National Laboratory for Optoelectronics (WNLO) and National Engineering Laboratory for Next Generation Internet Access System, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China"}]}],"member":"1968","published-online":{"date-parts":[[2022,11,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1063","DOI":"10.1109\/JLT.2017.2764951","article-title":"Long period gratings in multicore optical fibers for directional curvature sensor implementation","volume":"36","author":"Barrera","year":"2018","journal-title":"J. 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Lett."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1237","DOI":"10.1109\/LPT.2016.2531988","article-title":"Two-axis bending sensor based on cascaded eccentric core fiber Bragg gratings","volume":"28","author":"Kong","year":"2016","journal-title":"IEEE Photonics Technol. Lett."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"832","DOI":"10.1364\/OL.41.000832","article-title":"Ultrasensitive vector bending sensor based on multicore optical fiber","volume":"41","author":"Villatoro","year":"2016","journal-title":"Opt. Lett."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"12777","DOI":"10.1364\/OE.23.012777","article-title":"Multimode microfiber interferometer for dual-parameters sensing assisted by Fresnel reflection","volume":"23","author":"Sun","year":"2015","journal-title":"Opt. Express"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"129","DOI":"10.1364\/PRJ.5.000129","article-title":"Liquid modified photonic crystal fiber for simultaneous temperature and strain measurement","volume":"5","author":"Lin","year":"2017","journal-title":"Photonics Res."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"39","DOI":"10.1016\/j.optcom.2014.11.085","article-title":"Simultaneous measurement of temperature and strain or temperature and curvature based on an optical fiber Mach\u2013Zehnder interferometer","volume":"340","author":"Sun","year":"2015","journal-title":"Opt. Commun."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"73","DOI":"10.1016\/j.sna.2014.01.017","article-title":"Simultaneous measurement of refractive index and temperature based on a core-offset Mach\u2013Zehnder interferometer combined with a fiber Bragg grating","volume":"209","author":"Yao","year":"2014","journal-title":"Sens. Actuators A Phys."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"23770","DOI":"10.1364\/OE.26.023770","article-title":"Two-dimensional vector bending sensor based on seven-core fiber Bragg gratings","volume":"26","author":"Hou","year":"2018","journal-title":"Opt. Express"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"4835","DOI":"10.1364\/OL.39.004835","article-title":"Interferometric fiber-optic bending\/nano-displacement sensor using plastic dual-core fiber","volume":"39","author":"Qu","year":"2014","journal-title":"Opt. Lett."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"18081","DOI":"10.1364\/OE.25.018081","article-title":"Self-referenced anti-resonant reflecting guidance mechanism for directional bending sensing with low temperature and strain crosstalk","volume":"25","author":"Gao","year":"2017","journal-title":"Opt. Express"},{"key":"ref_17","first-page":"1","article-title":"In-Line Hybrid Fiber Sensor for Curvature and Temperature Measurement","volume":"11","author":"Cheng","year":"2019","journal-title":"IEEE Photonics J."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"12372","DOI":"10.1364\/OE.25.012372","article-title":"Single hole twin eccentric core fiber sensor based on anti-resonant effect combined with inline Mach-Zehnder interferometer","volume":"25","author":"Ni","year":"2017","journal-title":"Opt. Express"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"7005","DOI":"10.1364\/OE.26.007005","article-title":"Design and fabrication of a heterostructured cladding solid-core photonic bandgap fiber for construction of Mach-Zehnder interferometer and high sensitive curvature sensor","volume":"26","author":"Hu","year":"2018","journal-title":"Opt. Express"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"31690","DOI":"10.1364\/OE.21.031690","article-title":"Anti-resonant reflecting guidance in alcohol-filled hollow core photonic crystal fiber for sensing applications","volume":"21","author":"Liu","year":"2013","journal-title":"Opt. Express"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"5600106","DOI":"10.1109\/JSTQE.2016.2544705","article-title":"Optical displacement sensor in a capillary covered hollow core fiber based on anti-resonant reflecting guidance","volume":"23","author":"Gao","year":"2017","journal-title":"IEEE J. Sel. Top. Quantum Electron."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"5239","DOI":"10.1109\/JLT.2016.2611007","article-title":"Temperature insensitive liquid level sensor based on anti-resonant reflecting guidance in silica tube","volume":"34","author":"Liu","year":"2016","journal-title":"J. Light. Technol."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"3490","DOI":"10.1109\/JLT.2016.2580566","article-title":"Magnetic fluid-infiltrated anti-resonant reflecting optical waveguide for magnetic field sensing based on leaky modes","volume":"34","author":"Gao","year":"2016","journal-title":"J. Light. Technol."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"18341","DOI":"10.1364\/OE.26.018341","article-title":"Simultaneous implementation of enhanced resolution and large dynamic range for fiber temperature sensing based on different optical transmission mechanisms","volume":"26","author":"Ni","year":"2018","journal-title":"Opt. Express"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"1289","DOI":"10.1364\/OE.23.001289","article-title":"Anti-resonant hexagram hollow core fibers","volume":"23","author":"Hayes","year":"2015","journal-title":"Opt. 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