TY - JOUR
T1 - Strain dependence of perfluorinated polymer optical fiber Bragg grating measured at different wavelengths
AU - Ishikawa, Ryo
AU - Lee, Heeyoung
AU - Lacraz, Amédée
AU - Theodosiou, Antreas
AU - Kalli, Kyriacos
AU - Mizuno, Yosuke
AU - Nakamura, Kentaro
N1 - Funding Information:
Acknowledgments This work was supported by JSPS KAKENHI Grant Numbers 17H04930 and 17J07226, and by research grants from the Japan Gas Association, the ESPEC Foundation for Global Environment Research and Technology, the Association for Disaster Prevention Research, the Fujikura Foundation, and the Japan Association for Chemical Innovation. Partial funding was received from the People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme FP7=2007-2013=under REA grant agreement No. 608382 (“TRIPOD”) and the Cyprus University of Technology.
Funding Information:
This work was supported by JSPS KAKENHI Grant Numbers 17H04930 and 17J07226, and by research grants from the Japan Gas Association, the ESPEC Foundation for Global Environment Research and Technology, the Association for Disaster Prevention Research, the Fujikura Foundation, and the Japan Association for Chemical Innovation. Partial funding was received from the People Programme (Marie Curie Actions) of the European Unions Seventh Framework Programme FP7=2007-2013=under REA grant agreement No. 608382 (TRIPOD) and the Cyprus University of Technology.
Publisher Copyright:
© 2018 The Japan Society of Applied Physics.
PY - 2018/3
Y1 - 2018/3
N2 - We measure the strain dependence of multiple Bragg wavelengths (corresponding to different diffraction orders) of a fiber Bragg grating (FBG) inscribed in a perfluorinated graded-index polymer optical fiber (PFGI-POF) in the wavelength range up to 1550 nm. On the basis of this result, we show that the fractional sensitivity, which has been conventionally used as a wavelength-independent index for fair comparison of the FBG performance measured at different wavelengths, is dependent on wavelength in this range. The reason for this behavior seems to originate from the non-negligible wavelength dependence of refractive index and its strain-dependence coefficient. Using the wavelength dependence of the refractive index already reported for bulk, we deduce the wavelength dependence of the strain coefficient of the refractive index. This information will be a useful archive in implementing PFGI-POF-based strain sensors based on not only FBGs but also Brillouin scattering in the future.
AB - We measure the strain dependence of multiple Bragg wavelengths (corresponding to different diffraction orders) of a fiber Bragg grating (FBG) inscribed in a perfluorinated graded-index polymer optical fiber (PFGI-POF) in the wavelength range up to 1550 nm. On the basis of this result, we show that the fractional sensitivity, which has been conventionally used as a wavelength-independent index for fair comparison of the FBG performance measured at different wavelengths, is dependent on wavelength in this range. The reason for this behavior seems to originate from the non-negligible wavelength dependence of refractive index and its strain-dependence coefficient. Using the wavelength dependence of the refractive index already reported for bulk, we deduce the wavelength dependence of the strain coefficient of the refractive index. This information will be a useful archive in implementing PFGI-POF-based strain sensors based on not only FBGs but also Brillouin scattering in the future.
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U2 - 10.7567/JJAP.57.038002
DO - 10.7567/JJAP.57.038002
M3 - Article
AN - SCOPUS:85042673405
VL - 57
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 3
M1 - 038002
ER -