TY - JOUR
T1 - Investigation of Temperature Dependence of Microfiber Coil Resonators
AU - Yin, Yu
AU - Yu, Jibo
AU - Jiang, Yuxuan
AU - Li, Shi
AU - Ren, Jing
AU - Farrell, Gerald
AU - Lewis, Elfed
AU - Wang, Pengfei
N1 - Publisher Copyright:
© 1983-2012 IEEE.
PY - 2018/10/15
Y1 - 2018/10/15
N2 - The temperature-sensitive performance of a microfiber coil resonator (MCR) is thoroughly investigated. The MCR is fabricated by wrapping a microfiber on a PMMA rod coated with a UV-curable low refractive index epoxy. The temperature sensitivity is measured by investigating the correlation between the shift of the resonant wavelength and the surrounding temperature. It is determined that a range of parameters of the MCRs, including the gap between two adjacent rings, the diameter of the supporting rod, the number of rings, and the diameter of the microfiber, have a great influence on the temperature sensitivity of the MCRs. By optimizing the fabrication parameters of MCRs, such as the gap of the adjacent microrings and the diameter of supporting rod, etc., the maximum temperature sensitivity obtained is 237.31 pm/°C, which is about 2.3 times higher than that of MCR embedded in EFIRON UV-373 polymer and 23 times higher than that of MCR embedded in Teflon because of the strong thermo-optic and thermal expansion effects of the low refractive index epoxy and the supporting rod used in the experiments. Theoretical (numerical) simulation and experiment results are considered in the assessment of the optical performance improvement of MCR-based optical fiber temperature sensors.
AB - The temperature-sensitive performance of a microfiber coil resonator (MCR) is thoroughly investigated. The MCR is fabricated by wrapping a microfiber on a PMMA rod coated with a UV-curable low refractive index epoxy. The temperature sensitivity is measured by investigating the correlation between the shift of the resonant wavelength and the surrounding temperature. It is determined that a range of parameters of the MCRs, including the gap between two adjacent rings, the diameter of the supporting rod, the number of rings, and the diameter of the microfiber, have a great influence on the temperature sensitivity of the MCRs. By optimizing the fabrication parameters of MCRs, such as the gap of the adjacent microrings and the diameter of supporting rod, etc., the maximum temperature sensitivity obtained is 237.31 pm/°C, which is about 2.3 times higher than that of MCR embedded in EFIRON UV-373 polymer and 23 times higher than that of MCR embedded in Teflon because of the strong thermo-optic and thermal expansion effects of the low refractive index epoxy and the supporting rod used in the experiments. Theoretical (numerical) simulation and experiment results are considered in the assessment of the optical performance improvement of MCR-based optical fiber temperature sensors.
KW - Fabrication parameters
KW - microfiber coil resonator
KW - temperature sensitivity
UR - http://www.scopus.com/inward/record.url?scp=85051783721&partnerID=8YFLogxK
U2 - 10.1109/JLT.2018.2866000
DO - 10.1109/JLT.2018.2866000
M3 - Article
SN - 0733-8724
VL - 36
SP - 4887
EP - 4893
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
IS - 20
M1 - 8438953
ER -