{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,30]],"date-time":"2025-12-30T15:42:44Z","timestamp":1767109364018,"version":"build-2065373602"},"reference-count":17,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2013,6,25]],"date-time":"2013-06-25T00:00:00Z","timestamp":1372118400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A photonic crystal fiber-based sensing head is proposed for strain measurements. The sensor comprises a Hi-Bi PCF sensing head to measure interferometric signals in-reflection. An experimental background study of the sensing head is conducted through an optical backscatter reflectometer confirming the theoretical predictions,  also included. A cost effective setup is proposed where a laser is used as illumination source, which allows accurate high precision strain measurements. Thus, a sensitivity of ~7.96 dB\/me was achieved in a linear region of 1,200 \u03bce.<\/jats:p>","DOI":"10.3390\/s130708095","type":"journal-article","created":{"date-parts":[[2013,6,25]],"date-time":"2013-06-25T12:43:50Z","timestamp":1372164230000},"page":"8095-8102","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["An In-Reflection Strain Sensing Head Based on a  Hi-Bi Photonic Crystal Fiber"],"prefix":"10.3390","volume":"13","author":[{"given":"Sergio","family":"Rota-Rodrigo","sequence":"first","affiliation":[{"name":"Department of Electric and Electronic Engineering, Universidad P\u00fablica de Navarra, Pamplona 31006, Spain"}]},{"given":"Ana","family":"Pinto","sequence":"additional","affiliation":[{"name":"Department of Electric and Electronic Engineering, Universidad P\u00fablica de Navarra, Pamplona 31006, Spain"}]},{"given":"Mikel","family":"Bravo","sequence":"additional","affiliation":[{"name":"Department of Electric and Electronic Engineering, Universidad P\u00fablica de Navarra, Pamplona 31006, Spain"}]},{"given":"Manuel","family":"Lopez-Amo","sequence":"additional","affiliation":[{"name":"Department of Electric and Electronic Engineering, Universidad P\u00fablica de Navarra, Pamplona 31006, Spain"}]}],"member":"1968","published-online":{"date-parts":[[2013,6,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"587","DOI":"10.1109\/JLT.2011.2106479","article-title":"Fiber optic sensors in structural health monitoring","volume":"29","author":"Cobo","year":"2011","journal-title":"J. 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