{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,27]],"date-time":"2026-01-27T09:55:45Z","timestamp":1769507745044,"version":"3.49.0"},"reference-count":30,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2018,6,10]],"date-time":"2018-06-10T00:00:00Z","timestamp":1528588800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100010198","name":"Ministerio de Econom\u00eda, Industria y Competitividad, Gobierno de Espa\u00f1a","doi-asserted-by":"publisher","award":["TEC2015-71127-C2-1-R"],"award-info":[{"award-number":["TEC2015-71127-C2-1-R"]}],"id":[{"id":"10.13039\/501100010198","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100010198","name":"Ministerio de Econom\u00eda, Industria y Competitividad, Gobierno de Espa\u00f1a","doi-asserted-by":"publisher","award":["TEC2015-71127-C2-2-R"],"award-info":[{"award-number":["TEC2015-71127-C2-2-R"]}],"id":[{"id":"10.13039\/501100010198","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100008433","name":"Consejer\u00eda de Educaci\u00f3n, Juventud y Deporte, Comunidad de Madrid","doi-asserted-by":"publisher","award":["SINFOTON-CM S2013\/MIT-2790"],"award-info":[{"award-number":["SINFOTON-CM S2013\/MIT-2790"]}],"id":[{"id":"10.13039\/501100008433","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100012329","name":"European Association of National Metrology Institutes","doi-asserted-by":"publisher","award":["JRP-i22 14IND13 Photind, H2020-MSCA-RISE-2015:SENSIBLE and ENV58 MeteoMet2"],"award-info":[{"award-number":["JRP-i22 14IND13 Photind, H2020-MSCA-RISE-2015:SENSIBLE and ENV58 MeteoMet2"]}],"id":[{"id":"10.13039\/100012329","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003329","name":"Ministerio de Econom\u00eda y Competitividad","doi-asserted-by":"publisher","award":["IJCI-2016-30484"],"award-info":[{"award-number":["IJCI-2016-30484"]}],"id":[{"id":"10.13039\/501100003329","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this paper we propose and demonstrate two alternative methods for the high-precision calibration of fiber Bragg grating (FBG) interrogators. The first method is based on the direct comparison between the wavelength measurements of the interrogator under test and a calibrated wavemeter, while analyzing a simulated symmetric Bragg grating constructed by a tunable filter and a fiber mirror. This first method is applicable to most commercial systems but presents an uncertainty limited by the spectral width and the wavelength stability of the tunable filter. The second method consists in measuring multiple reference absorption lines of calibrated absorption gas cells. This second method presents lower uncertainties, limited only by the optical resolution of the interrogator and the wavelength uncertainty of the reference cell absorption lines. However, it imposes more restrictive requirements on the interrogator software. Both methods were experimentally demonstrated by calibrating multiple commercial systems, reaching uncertainties down to 0.63 pm at a central wavelength of 1550 nm.<\/jats:p>","DOI":"10.3390\/s18061895","type":"journal-article","created":{"date-parts":[[2018,6,11]],"date-time":"2018-06-11T11:01:01Z","timestamp":1528714861000},"page":"1895","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Experimental Demonstration of Low-Uncertainty Calibration Methods for Bragg Grating Interrogators"],"prefix":"10.3390","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7620-3053","authenticated-orcid":false,"given":"Jos\u00e9 Luis","family":"De Miguel","sequence":"first","affiliation":[{"name":"Instituto de \u00d3ptica, CSIC, C\/Serrano 121, 28006 Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Juan","family":"Galindo-Santos","sequence":"additional","affiliation":[{"name":"Instituto de \u00d3ptica, CSIC, C\/Serrano 121, 28006 Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Concepci\u00f3n","family":"Pulido de Torres","sequence":"additional","affiliation":[{"name":"Instituto de Estructura de la Materia, CSIC, Serrano 123, 28006 Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pedro","family":"Salgado","sequence":"additional","affiliation":[{"name":"Instituto Mexicano del Petr\u00f3leo\u2014IMP, Ciudad de M\u00e9xico 07730, M\u00e9xico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aitor V.","family":"Velasco","sequence":"additional","affiliation":[{"name":"Instituto de \u00d3ptica, CSIC, C\/Serrano 121, 28006 Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pedro","family":"Corredera","sequence":"additional","affiliation":[{"name":"Instituto de \u00d3ptica, CSIC, C\/Serrano 121, 28006 Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,6,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Kashyap, R. 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