{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T16:03:18Z","timestamp":1775145798519,"version":"3.50.1"},"reference-count":17,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2017,1,20]],"date-time":"2017-01-20T00:00:00Z","timestamp":1484870400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This paper proposes the strategy of fabricating an all fiber wide-range displacement sensor based on the macro-bend coupling effect which causes power transmission between two twisted bending plastic optical fibers (POF), where the coupling power changes with the bending radius of the fibers. For the sensor, a structure of two twisted plastic fibers is designed with the experimental platform that we constructed. The influence of external temperature and displacement speed shifts are reported. The displacement sensor performance is the sensor test at different temperatures and speeds. The sensor was found to be satisfactory at both room temperature and 70 \u00b0C when the displacement is up to 140 mm. The output power is approximately linear to a displacement of 110 mm\u2013140 mm under room temperature and 2 mm\/s speed at 19.805 nW\/mm sensitivity and 0.12 mm resolution. The simple structure of the sensor makes it reliable for other applications and further utilizations, promising a bright future.<\/jats:p>","DOI":"10.3390\/s17010196","type":"journal-article","created":{"date-parts":[[2017,1,20]],"date-time":"2017-01-20T10:10:12Z","timestamp":1484907012000},"page":"196","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["A Wide-Range Displacement Sensor Based on Plastic Fiber Macro-Bend Coupling"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7319-0683","authenticated-orcid":false,"given":"Jia","family":"Liu","sequence":"first","affiliation":[{"name":"Key Laboratory of Instrumentation Science &amp; Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, China"},{"name":"Science and Technology on Electronic Test &amp; Measurement Laboratory, North University of China, Taiyuan 030051, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yulong","family":"Hou","sequence":"additional","affiliation":[{"name":"Key Laboratory of Instrumentation Science &amp; Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Huixin","family":"Zhang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Instrumentation Science &amp; Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4547-0992","authenticated-orcid":false,"given":"Pinggang","family":"Jia","sequence":"additional","affiliation":[{"name":"Key Laboratory of Instrumentation Science &amp; Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shan","family":"Su","sequence":"additional","affiliation":[{"name":"Key Laboratory of Instrumentation Science &amp; Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guocheng","family":"Fang","sequence":"additional","affiliation":[{"name":"Science and Technology on Electronic Test &amp; Measurement Laboratory, North University of China, Taiyuan 030051, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wenyi","family":"Liu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Instrumentation Science &amp; Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, China"},{"name":"Science and Technology on Electronic Test &amp; Measurement Laboratory, North University of China, Taiyuan 030051, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jijun","family":"Xiong","sequence":"additional","affiliation":[{"name":"Key Laboratory of Instrumentation Science &amp; Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, China"},{"name":"Science and Technology on Electronic Test &amp; Measurement Laboratory, North University of China, Taiyuan 030051, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2017,1,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1019","DOI":"10.1016\/j.optlaseng.2011.01.010","article-title":"A novel distributed optic fiber transduser for landslides monitoring","volume":"49","author":"Zhu","year":"2011","journal-title":"Opt. Laser Eng."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"13204","DOI":"10.3390\/s131013204","article-title":"A Wireless Laser Displacement Sensor Node for Structural Health Monitoring","volume":"13","author":"Park","year":"2013","journal-title":"Sensors"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"2426","DOI":"10.1364\/AO.55.002426","article-title":"Simultaneous measurement of dynamic displacement and strain in a single fiber using coarse wavelength-division multiplexing and fiber Bragg-grating filter-based sensing system","volume":"55","author":"Chuang","year":"2016","journal-title":"Appl. Opt."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"333","DOI":"10.1016\/j.measurement.2013.11.007","article-title":"A review of recent developed and applications of plastic fiber optic displacement sensors","volume":"48","author":"Yang","year":"2014","journal-title":"Measurement"},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Podhraski, M., and Trontelj, J. (2016). A Differential Monolithically Integrated Inductive Linear Displacement Measurement Microsystem. Sensors, 16.","DOI":"10.3390\/s16030384"},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Wang, B., Long, J., and Teo, K.H. (2016). Multi-Channel Capacitive Sensor Arrays. Sensors, 16.","DOI":"10.3390\/s16020150"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"51","DOI":"10.1016\/j.sna.2011.05.030","article-title":"Novel temperature-insensitive fiber Bragg grating sensor for displacement measurement","volume":"170","author":"Shen","year":"2011","journal-title":"Sens. Actuat. A Phys."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"36","DOI":"10.1016\/j.cryogenics.2015.02.002","article-title":"Design, fabrication, and testing of fiber Bragg grating sensors for cryogenic long-range displacement measurement","volume":"68","author":"Li","year":"2015","journal-title":"Cryogenics"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"3631","DOI":"10.1109\/JSEN.2014.2330998","article-title":"Flexinble Optical Fiber Bending Transducer for Application in Glove-Based Sensors","volume":"14","author":"Fujiwara","year":"2014","journal-title":"IEEE Sens. J."},{"key":"ref_10","first-page":"520","article-title":"Bent of plastic optical fiber with structural imperfections for displacement sensor","volume":"52","author":"Arifin","year":"2014","journal-title":"Indian J. Pure Appl. Phys."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"6526","DOI":"10.1364\/AO.50.006526","article-title":"Using a validated transmission model for the optimization of bundled fiber optic displacement sensors","volume":"50","author":"Moro","year":"2011","journal-title":"Appl. Opt."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"23231","DOI":"10.1364\/OE.22.023231","article-title":"Polymer optical fiber twisted macro-bend coupling system for liquid level detection","volume":"22","author":"Hou","year":"2014","journal-title":"Opt. Express"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"997","DOI":"10.1364\/AO.42.000997","article-title":"Dependence of bending losses on cladding thickness in plastic optical fibers","volume":"42","author":"Durana","year":"2003","journal-title":"Appl.Opt."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"037204","DOI":"10.1103\/PhysRevLett.117.037204","article-title":"Snell\u2019s Law for Spin Waves","volume":"117","author":"Stigloher","year":"2016","journal-title":"Phys. Rev. Lett."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"580","DOI":"10.1016\/j.sna.2006.12.010","article-title":"Theoretical and experimental study on the optical fiber bundle displacement sensors","volume":"136","author":"Cao","year":"2007","journal-title":"Sens. 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