{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,8]],"date-time":"2026-04-08T20:45:14Z","timestamp":1775681114328,"version":"3.50.1"},"reference-count":19,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2014,8,4]],"date-time":"2014-08-04T00:00:00Z","timestamp":1407110400000},"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>An in-fiber Mach-Zehnder interferometer (MZI) for high temperature measurement is proposed and experimentally demonstrated. The device is constructed of a piece of thin-core fiber (TCF) sandwiched between two short sections of multimode fiber (MMF), i.e., a MMF-TCF-MMF structure. A well-defined interference spectrum is obtained owing to the core-mismatch, and the interference dips are sensitive to the ambient temperature. The experimental results show that the proposed interferometer is capable of high temperature measurement up to 875 \u00b0C with a sensitivity of 92 pm\/\u00b0C over repeated measurements. The explored wavelength drop point may limit the measurement range, which can be improved by repeated thermal annealing.<\/jats:p>","DOI":"10.3390\/s140814210","type":"journal-article","created":{"date-parts":[[2014,8,5]],"date-time":"2014-08-05T10:59:37Z","timestamp":1407236377000},"page":"14210-14221","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["A Thermally Annealed Mach-Zehnder Interferometer for High Temperature Measurement"],"prefix":"10.3390","volume":"14","author":[{"given":"Zhongyao","family":"Feng","sequence":"first","affiliation":[{"name":"Physics Department, Northwest University, No.229, Taibai Road (North), Xi'an 710069, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7916-0685","authenticated-orcid":false,"given":"Jiacheng","family":"Li","sequence":"additional","affiliation":[{"name":"Physics Department, Northwest University, No.229, Taibai Road (North), Xi'an 710069, China"}]},{"given":"Xueguang","family":"Qiao","sequence":"additional","affiliation":[{"name":"Physics Department, Northwest University, No.229, Taibai Road (North), Xi'an 710069, China"}]},{"given":"Ling","family":"Li","sequence":"additional","affiliation":[{"name":"Physics Department, Northwest University, No.229, Taibai Road (North), Xi'an 710069, China"}]},{"given":"Hangzhou","family":"Yang","sequence":"additional","affiliation":[{"name":"Physics Department, Northwest University, No.229, Taibai Road (North), Xi'an 710069, China"}]},{"given":"Manli","family":"Hu","sequence":"additional","affiliation":[{"name":"Physics Department, Northwest University, No.229, Taibai Road (North), Xi'an 710069, China"}]}],"member":"1968","published-online":{"date-parts":[[2014,8,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"070607","DOI":"10.3788\/COL201210.070607","article-title":"High-temperature sensor using a Fabry-Perot interferometer based on solid-core photonic crystal fiber","volume":"10","author":"Zhang","year":"2012","journal-title":"Chin. 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