{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:17:49Z","timestamp":1760242669990,"version":"build-2065373602"},"reference-count":24,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2016,1,12]],"date-time":"2016-01-12T00:00:00Z","timestamp":1452556800000},"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>A compact fiber-optic inclinometer is proposed and experimentally demonstrated based on a Fabry-Perot interference (FFPI). The sensing head consists of a short segment of thin-core fiber (TCF) following with a piece of hollow-core fiber (HCF). High-order cladding modes have been excited because of core diameter mismatch. A clear interference spectrum has been obtained as the consequence of interference among the reflected core modes and cladding modes. Fringe contrast of the interference spectrum is highly sensitive to fiber bending with direction independence, and good linearity has been observed during the bending range from 1\u00b0 to 3\u00b0 with a sensitivity of 2.71 dB\/deg.<\/jats:p>","DOI":"10.3390\/s16010092","type":"journal-article","created":{"date-parts":[[2016,1,12]],"date-time":"2016-01-12T04:42:26Z","timestamp":1452573746000},"page":"92","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["A Compact Fiber Inclinometer Using a Thin-Core Fiber with Incorporated an Air-Gap Microcavity Fiber Interferometer"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7916-0685","authenticated-orcid":false,"given":"Jiacheng","family":"Li","sequence":"first","affiliation":[{"name":"Physics Department, Northwest University, No.229, Taibai Road (North), Xi\u2019an 710069, China"}]},{"given":"Xueguang","family":"Qiao","sequence":"additional","affiliation":[{"name":"Physics Department, Northwest University, No.229, Taibai Road (North), Xi\u2019an 710069, China"}]},{"given":"Qiangzhou","family":"Rong","sequence":"additional","affiliation":[{"name":"Physics Department, Northwest University, No.229, Taibai Road (North), Xi\u2019an 710069, China"}]},{"given":"An","family":"Sun","sequence":"additional","affiliation":[{"name":"International Institute for Urban Systems Engineering, Southeast University, PailouFour No. Two, Nanjing 210096, China"}]}],"member":"1968","published-online":{"date-parts":[[2016,1,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"224","DOI":"10.1109\/LPT.2003.820101","article-title":"Temperature-independent fiber bragg grating tilt sensor","volume":"16","author":"Guan","year":"2004","journal-title":"IEEE Photonics Technol. 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