TY - JOUR
T1 - Potential of Discriminative Sensing of Strain and Temperature Using Perfluorinated Polymer FBG
AU - Mizuno, Yosuke
AU - Ishikawa, Ryo
AU - Lee, Heeyoung
AU - Theodosiou, Antreas
AU - Kalli, Kyriacos
AU - Nakamura, Kentaro
N1 - Funding Information:
Manuscript received January 10, 2019; revised February 7, 2019; accepted February 16, 2019. Date of publication February 21, 2019; date of current version May 16, 2019. This work was supported in part by the Japan Society for the Promotion of Science KAKENHI under Grant 17H04930 and Grant 17J07226 and in part by the Fujikura Foundation. The associate editor coordinating the review of this paper and approving it for publication was Prof. Agostino Iadicicco. (Corresponding author: Yosuke Mizuno.) Y. Mizuno, R. Ishikawa, H. Lee, and K. Nakamura are with the Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, Japan (e-mail: ymizuno@sonic.pi.titech.ac.jp; rishikawa@sonic.pi.titech.ac.jp; hylee@sonic.pi.titech.ac.jp; knakamur@sonic.pi.titech.ac.jp).
Publisher Copyright:
© 2019 IEEE.
PY - 2019/6/15
Y1 - 2019/6/15
N2 - Though the strain characteristics of fiber Bragg gratings (FBGs) inscribed in perfluorinated graded-index (PFGI) polymer optical fibers (POFs) have been reported, their temperature characteristics have not yet been detailed. In this paper, we experimentally investigate the temperature dependence of the Bragg wavelength of a PFGI-POF-FBG. With the increasing temperature, each peak of the FBG-reflected spectrum shifted to longer wavelength with different coefficients. The temperature coefficient of one of the clearest peaks was 0.09 nm/°C, which was eight times larger than those of FBGs in silica single-mode fibers and almost the same as those of FBGs in polymethyl methacrylate POFs. A temperature-independent but strain-dependent peak was also observed, which indicates the potential of discriminative sensing of strain and temperature.
AB - Though the strain characteristics of fiber Bragg gratings (FBGs) inscribed in perfluorinated graded-index (PFGI) polymer optical fibers (POFs) have been reported, their temperature characteristics have not yet been detailed. In this paper, we experimentally investigate the temperature dependence of the Bragg wavelength of a PFGI-POF-FBG. With the increasing temperature, each peak of the FBG-reflected spectrum shifted to longer wavelength with different coefficients. The temperature coefficient of one of the clearest peaks was 0.09 nm/°C, which was eight times larger than those of FBGs in silica single-mode fibers and almost the same as those of FBGs in polymethyl methacrylate POFs. A temperature-independent but strain-dependent peak was also observed, which indicates the potential of discriminative sensing of strain and temperature.
KW - Polymer optical fibers
KW - fiber Bragg gratings
KW - strain sensing
KW - temperature sensing
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U2 - 10.1109/JSEN.2019.2900464
DO - 10.1109/JSEN.2019.2900464
M3 - Article
AN - SCOPUS:85065879450
VL - 19
SP - 4454
EP - 4462
JO - IEEE Sensors Journal
JF - IEEE Sensors Journal
SN - 1530-437X
IS - 12
M1 - 8648393
ER -