TY - JOUR
T1 - Hollow Core Fiber Based Interferometer for High-Temperature (1000 °c) Measurement
AU - Liu, Dejun
AU - Wu, Qiang
AU - Mei, Chao
AU - Yuan, Jinhui
AU - Xin, Xiangjun
AU - Mallik, Arun Kumar
AU - Wei, Fangfang
AU - Han, Wei
AU - Kumar, Rahul
AU - Yu, Chongxiu
AU - Wan, Shengpeng
AU - He, Xingdao
AU - Liu, Bo
AU - Peng, Gang Ding
AU - Semenova, Yuliya
AU - Farrell, Gerald
N1 - Publisher Copyright:
© 1983-2012 IEEE.
PY - 2018/5/1
Y1 - 2018/5/1
N2 - A simple, cost effective high-temperature sensor (up to 1000 °C) based on a hollow core fiber (HCF) structure is reported. It is configured by fusion splicing a short section of HCF with a length of few millimeters between two standard single mode fibers (SMF-28). Due to multiple beam interference introduced by the cladding of the HCF, periodic transmission dips with high spectral extinction ratio and high-quality (Q) factor are excited. However, theoretical analysis shows that minor variations of the HCF cladding diameter may result in a significant decrease in the Q factor. Experimental results demonstrate that the position of periodic transmission dips are independent of the HCF length, but spectral Q factors and transmission power varies with different HCF lengths. A maximum Q factor of 3.3 × 104 has been demonstrated with large free spectral range of 23 nm and extinction ratio of 26 dB. Furthermore, the structure is proved to be an excellent high-temperature sensor with advantages of high sensitivity (up to 33.4 pm/ °C), wide working temperature range (from room temperature to 1000 °C), high resolution, good stability, repeatability, relatively low strain sensitivity (0.46 pm/μϵ), low cost, and a simple and flexible fabrication process that offers a great potential for practical applications. A thorough theoretic analysis of the HCF-based fiber structure has been proposed. The experimental results are demonstrated to be well matched with our simulation results.
AB - A simple, cost effective high-temperature sensor (up to 1000 °C) based on a hollow core fiber (HCF) structure is reported. It is configured by fusion splicing a short section of HCF with a length of few millimeters between two standard single mode fibers (SMF-28). Due to multiple beam interference introduced by the cladding of the HCF, periodic transmission dips with high spectral extinction ratio and high-quality (Q) factor are excited. However, theoretical analysis shows that minor variations of the HCF cladding diameter may result in a significant decrease in the Q factor. Experimental results demonstrate that the position of periodic transmission dips are independent of the HCF length, but spectral Q factors and transmission power varies with different HCF lengths. A maximum Q factor of 3.3 × 104 has been demonstrated with large free spectral range of 23 nm and extinction ratio of 26 dB. Furthermore, the structure is proved to be an excellent high-temperature sensor with advantages of high sensitivity (up to 33.4 pm/ °C), wide working temperature range (from room temperature to 1000 °C), high resolution, good stability, repeatability, relatively low strain sensitivity (0.46 pm/μϵ), low cost, and a simple and flexible fabrication process that offers a great potential for practical applications. A thorough theoretic analysis of the HCF-based fiber structure has been proposed. The experimental results are demonstrated to be well matched with our simulation results.
KW - Optical fiber applications
KW - optical fiber sensors
KW - optical interferometry
KW - optical spectroscopy
KW - temperature sensors
UR - http://www.scopus.com/inward/record.url?scp=85039799049&partnerID=8YFLogxK
U2 - 10.1109/JLT.2017.2784544
DO - 10.1109/JLT.2017.2784544
M3 - Article
AN - SCOPUS:85039799049
SN - 0733-8724
VL - 36
SP - 1583
EP - 1590
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
IS - 9
M1 - 8219386
ER -