TY - JOUR
T1 - Twist dependencies of strain and temperature sensitivities of perfluorinated graded-index polymer optical fiber Bragg gratings
AU - Mizuno, Yosuke
AU - Ma, Tianyi
AU - Ishikawa, Ryo
AU - Lee, Heeyoung
AU - Theodosiou, Antreas
AU - Kalli, Kyriacos
AU - Nakamura, Kentaro
N1 - Publisher Copyright:
© 2019 The Japan Society of Applied Physics.
PY - 2019/8/1
Y1 - 2019/8/1
N2 - We measure the twist dependence of the reflected spectrum of a fiber Bragg grating (FBG) inscribed in a perfluorinated graded-index (PFGI) polymer optical fiber (POF). With increasing twist, the strain sensitivity decreases with a coefficient of -34.2 pm/%/turns/m, while the temperature sensitivity increases with a coefficient of 0.39 pm/°C/turns/m. At a twist of 150 turns m-1, the temperature sensitivity is 3 times higher than that with no twist. The controllability of the strain and temperature coefficients without considerable cost is beneficial not only to highly sensitive temperature sensing but also discriminative sensing of strain and temperature using two PFGI-POF-FBGs.
AB - We measure the twist dependence of the reflected spectrum of a fiber Bragg grating (FBG) inscribed in a perfluorinated graded-index (PFGI) polymer optical fiber (POF). With increasing twist, the strain sensitivity decreases with a coefficient of -34.2 pm/%/turns/m, while the temperature sensitivity increases with a coefficient of 0.39 pm/°C/turns/m. At a twist of 150 turns m-1, the temperature sensitivity is 3 times higher than that with no twist. The controllability of the strain and temperature coefficients without considerable cost is beneficial not only to highly sensitive temperature sensing but also discriminative sensing of strain and temperature using two PFGI-POF-FBGs.
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U2 - 10.7567/1882-0786/ab3013
DO - 10.7567/1882-0786/ab3013
M3 - Article
AN - SCOPUS:85071074655
VL - 12
JO - Applied Physics Express
JF - Applied Physics Express
SN - 1882-0778
IS - 8
M1 - 082007
ER -