TY - JOUR
T1 - Low-cost temperature- And strain-insensitive twist sensor based on a hybrid fiber grating structure
AU - Guo, Xi
AU - Xing, Zhikun
AU - Qin, Huabao
AU - Sun, Qizhen
AU - Wang, Hushan
AU - Liu, Deming
AU - Zhang, Lin
AU - Yan, Zhijun
N1 - This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: https://doi.org/10.1364/AO.58.004479. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
PY - 2019/5/31
Y1 - 2019/5/31
N2 - We proposed and experimentally demonstrated a temperature- and strain-insensitive twist sensor based on a hybrid fiber grating structure, in which the hybrid grating structure is constructed with a 45°-tilted fiber grating and a chirped fiber Bragg grating UV-inscribed in a single-mode fiber in series. The sensing performance has been evaluated by experimental and numerical analyses, which are in good consistency. The experimental results show that the hybrid-grating-structure-based twist sensor has a maximum twist sensitivity up to 15.037 dB/rad. Moreover, due to the invariability of the fiber birefringence and the state of polarization of the input light, such sensor has intrinsically low temperature and strain sensitivities of 7.86 × 10−3 dB∕°C and 6.7 × 10−5 dB∕με, corresponding to the maximum twist measurement error resulting from temperature and strain of 5.2 × 10−4 rad∕°C and 4.5 × 10−6 rad∕με, respectively.
AB - We proposed and experimentally demonstrated a temperature- and strain-insensitive twist sensor based on a hybrid fiber grating structure, in which the hybrid grating structure is constructed with a 45°-tilted fiber grating and a chirped fiber Bragg grating UV-inscribed in a single-mode fiber in series. The sensing performance has been evaluated by experimental and numerical analyses, which are in good consistency. The experimental results show that the hybrid-grating-structure-based twist sensor has a maximum twist sensitivity up to 15.037 dB/rad. Moreover, due to the invariability of the fiber birefringence and the state of polarization of the input light, such sensor has intrinsically low temperature and strain sensitivities of 7.86 × 10−3 dB∕°C and 6.7 × 10−5 dB∕με, corresponding to the maximum twist measurement error resulting from temperature and strain of 5.2 × 10−4 rad∕°C and 4.5 × 10−6 rad∕με, respectively.
UR - http://www.scopus.com/inward/record.url?scp=85066487702&partnerID=8YFLogxK
UR - https://www.osapublishing.org/ao/abstract.cfm?uri=ao-58-16-4479
U2 - 10.1364/AO.58.004479
DO - 10.1364/AO.58.004479
M3 - Article
AN - SCOPUS:85066487702
SN - 1559-128X
VL - 58
SP - 4479
EP - 4483
JO - Applied Optics
JF - Applied Optics
IS - 16
ER -