Fiber-Optic Strain Sensors Based on Linearly Chirped Tapered Fiber Bragg Gratings With Tailored Intrinsic Chirp

Tomasz Osuch , Konrad Markowski , Kazimierz Jędrzejewski

Abstract

In this paper, spectrally tailored tapered chirped fiber Bragg gratings (TCFBGs) are considered for use as strain sensors. Both gratings were written in fused tapered optical fiber using linearly chirped fiber Bragg gratings in co-directional and counter-directional chirp configurations. Theoretical and numerical analysis as well as experimental verification of the influence of applied strain on spectral width of both TCFBG structures were carried out. The results show that TCFBGs exhibit monotonic strain response over the wide operating range of the applied force. Compared with standard tapered FBG written using uniform phase mask, in the case of co-directionally written TCFBG with substantially larger grating chirp the monotonic operating range can be easily broadened toward the higher strain values (even above the applied force at which the optical fiber breaks). In turn, the intrinsic chirp of the counter-directionally written TCFBG can be tailored in such a way as to ensure that the monotonicity of its strain response is always satisfied when tensile force is applied. This is due to the spectral broadening of the reflected spectrum when strain increases.
Author Tomasz Osuch ISE - [Instytut Łączności PIB (IŁ PIB)]
Tomasz Osuch,,
- The Institute of Electronic Systems
- Instytut Łączności PIB
, Konrad Markowski ISE
Konrad Markowski,,
- The Institute of Electronic Systems
, Kazimierz Jędrzejewski ISE
Kazimierz Jędrzejewski,,
- The Institute of Electronic Systems
Journal seriesIEEE Sensors Journal, ISSN 1530-437X
Issue year2016
Vol16
No20
Pages1558-1748
Publication size in sheets9.5
Keywords in EnglishFiber Bragg gratings (FBGs), fiber taper, chirp, strain sensor
DOIDOI:10.1109/JSEN.2016.2601332
URL http://ieeexplore.ieee.org/search/searchresult.jsp?searchWithin=%22Authors%22:.QT.Tomasz%20Osuch.QT.&newsearch=true
projectResearch on measurement, circuit and signal theory and electronic circuits and systems. Project leader: Starecki Tomasz, , Phone: +48 22 825 37 09; 22 234 7744; +48 22 234 3657, start date 12-05-2016, end date 31-12-2017, ISE/2016/DS, Completed
WEiTI Działalność statutowa
Languageen angielski
Score (nominal)30
ScoreMinisterial score [Punktacja MNiSW] = 30.0, 27-03-2017, ArticleFromJournal
Ministerial score (2013-2016) [Punktacja MNiSW (2013-2016)] = 30.0, 27-03-2017, ArticleFromJournal
Publication indicators WoS Impact Factor [Impact Factor WoS]: 2016 = 2.512 (2) - 2016=2.527 (5)
Citation count*11 (2018-06-16)
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