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Low-loss random fiber gratings made with an fs-IR laser for distributed fiber sensing

Par Conseil national de recherches du Canada

DOITrouver le DOI : https://doi.org/10.1109/JLT.2019.2917389
AuteurRechercher : 1Identifiant ORCID : https://orcid.org/0000-0002-8610-4032; Rechercher : 1Identifiant ORCID : https://orcid.org/0000-0002-6144-0937; Rechercher : 1; Rechercher : 1; Rechercher : Identifiant ORCID : https://orcid.org/0000-0002-5525-0694
Affiliation
  1. Conseil national de recherches du Canada. Technologies de sécurité et de rupture
FormatTexte, Article
Sujetfiber optics sensors; gratings; rayleigh; scattering; ltrafast lasers
Résumé
By using the plane-by-plane grating inscription method with an fs-IR laser, random fiber gratings with low laser-induced loss were fabricated in SMF-28 fiber for distributed temperature sensing. Compared to conventional random gratings having broadband backscattering enhancement, the demonstrated random fiber grating has a well defined narrower bandwidth of backscattering enhancement, higher laser-induced backscattering level, and lower laser-induced loss, which are critical for long-haul distributed fiber sensor systems with high measurement accuracy. Experimental results showed that by using fabricated random fiber gratings along with the technique of optical frequency-domain reflectometry, a distributed temperature fiber sensor could be realized having a gauge length of 10 mm, standard deviation of temperature measurement as low as 0.00085 °C, and laser-induced loss of 0.08 dB/m.
Date de publication
Maison d’éditionIEEE
Dans
  • Journal of Lightwave Technology 37, nº 18 : 4697–4702.
Langueanglais
Publications évaluées par des pairsOui
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Identificateur de l’enregistrement436e82de-47a9-4455-b002-1d53d05e6083
Enregistrement créé2021-03-19
Enregistrement modifié2021-03-19
Date de modification :