High-sensitivity chirped tapered fiber-Bragg-grating-based Fabry–Perot cavity for strain measurements

Konrad Markowski , Piotr Araszkiewicz , Juliusz Bojarczuk , Krzysztof Perlicki

Abstract

In this Letter, a novel, to the best of our knowledge, Fabry–Perot cavity, based on Bragg grating technology for temperature and strain monitoring, is presented. Such a structure consists of two linearly chirped fiber Bragg gratings of a significant length written in a thermally tapered optical fiber. The technological process for manufacturing such a grating allows for utilization of almost every tapered fiber, by means of its profile and also phase masks with various chirp ratios. For this type of structure, a method for strain discrimination based on monitoring of the cavity length is proposed, enabling potential multiplexation of the sensor of two structures, which have the similar reflection spectra, by means of their spectral position. The utilized sensing mechanism allowed for achieving strain sensitivity by means of the cavity length change as high as 5 µm/µε. Also, as it has been experimentally shown a structure can also be employed for measurements of temperature, with the sensitivity equal to 8.96 pm/C.

Author Konrad Markowski (FEIT / IT)
Konrad Markowski,,
- The Institute of Telecommunications
, Piotr Araszkiewicz (FEIT / IT)
Piotr Araszkiewicz,,
- The Institute of Telecommunications
, Juliusz Bojarczuk (FEIT / IT)
Juliusz Bojarczuk,,
- The Institute of Telecommunications
, Krzysztof Perlicki (FEIT / IT)
Krzysztof Perlicki,,
- The Institute of Telecommunications
Journal seriesOptics Letters, ISSN 0146-9592, e-ISSN 1539-4794
Issue year2020
Vol45
No10
Pages2838-2841
Publication size in sheets0.5
ASJC Classification3107 Atomic and Molecular Physics, and Optics
DOIDOI:10.1364/OL.390784
URL https://www.osapublishing.org/ol/abstract.cfm?uri=ol-45-10-2838
Languageen angielski
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2020 Markowski High-sensitivity chirped tapered fiber-Bragggrating-based Fabry–Perot.pdf 1,006.34 KB
Score (nominal)140
Score sourcejournalList
ScoreMinisterial score = 140.0, 18-09-2020, ArticleFromJournal
Publication indicators Scopus Citations = 1; GS Citations = 1.0; WoS Citations = 1; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.597; WoS Impact Factor: 2018 = 3.866 (2) - 2018=3.499 (5)
Citation count*1 (2020-09-14)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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