TY - JOUR
T1 - Directional Bending Sensor Based on a Dual Side-Hole Fiber Mach-Zehnder Interferometer
AU - Tian, Ye
AU - Chai, Quan
AU - Tan, Tao
AU - Mu, Boxin
AU - Liu, Qiang
AU - Liu, Yanlei
AU - Ren, Jing
AU - Zhang, Jianzhong
AU - Oh, Kyunghwan
AU - Lewis, Elfed
AU - Yang, Jun
AU - Liu, Zhihai
AU - Zhang, Wenping
AU - Yuan, Libo
N1 - Publisher Copyright:
© 1989-2012 IEEE.
PY - 2018/2/15
Y1 - 2018/2/15
N2 - A new directional bending sensor based on a dual side-hole fiber (DSHF) that can detect both the direction and magnitude of bending in a self-temperature compensated manner is described and experimentally demonstrated. The sensor is based on an in-fiber Mach-Zehnder interferometer (MZI), where a DSHF segment was spliced between two standard single-mode fibers (SMFs) as input and output. The sensor has two orthogonal axes which are formed by both the asymmetry in the side-hole location in DSHF and an offset in the fusion splice between the SMF and DSHF. The visibility in the MZI output intensity and the spectral shifts of MZI fringes show separate responses to the bending curvature and direction, which is a key feature of the directional curvature sensor. An inscribed fiber Bragg grating in the DSHF measure allows the temperature to be measured independently. The sensor can provide salient advantages in its unique capability to precisely quantify the direction and magnitude of bending along with its reproducibility, compactness, and suitability for mass production, which makes it suitable for many practical bending sensing applications.
AB - A new directional bending sensor based on a dual side-hole fiber (DSHF) that can detect both the direction and magnitude of bending in a self-temperature compensated manner is described and experimentally demonstrated. The sensor is based on an in-fiber Mach-Zehnder interferometer (MZI), where a DSHF segment was spliced between two standard single-mode fibers (SMFs) as input and output. The sensor has two orthogonal axes which are formed by both the asymmetry in the side-hole location in DSHF and an offset in the fusion splice between the SMF and DSHF. The visibility in the MZI output intensity and the spectral shifts of MZI fringes show separate responses to the bending curvature and direction, which is a key feature of the directional curvature sensor. An inscribed fiber Bragg grating in the DSHF measure allows the temperature to be measured independently. The sensor can provide salient advantages in its unique capability to precisely quantify the direction and magnitude of bending along with its reproducibility, compactness, and suitability for mass production, which makes it suitable for many practical bending sensing applications.
KW - Directional bending sensor
KW - dual side-hole fiber
KW - FBG
KW - temperature measurement
UR - http://www.scopus.com/inward/record.url?scp=85039769923&partnerID=8YFLogxK
U2 - 10.1109/LPT.2017.2786338
DO - 10.1109/LPT.2017.2786338
M3 - Article
AN - SCOPUS:85039769923
SN - 1041-1135
VL - 30
SP - 375
EP - 378
JO - IEEE Photonics Technology Letters
JF - IEEE Photonics Technology Letters
IS - 4
M1 - 8234575
ER -