TY - JOUR
T1 - In-Line Mach-Zehnder Interferometer with D-Shaped Fiber Grating for Temperature-Discriminated Directional Curvature Measurement
AU - Jiang, Biqiang
AU - Bai, Zhiyong
AU - Wang, Changle
AU - Zhao, Yunhe
AU - Zhao, Jianlin
AU - Zhang, Lin
AU - Zhou, Kaiming
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2018/2/1
Y1 - 2018/2/1
N2 - A high-sensitivity curvature sensing configuration is implemented by using a fiber Mach-Zehnder interferometer (MZI) with D-shaped fiber Bragg grating (FBG). A segment of D-shaped fiber is fusion spliced into a single mode fiber at both sides, and then a short FBG is inscribed in the D-shaped fiber. The fiber device yields a significant spectrum sensitivity as high as 87.7 nm/m-1 to the ultralow curvature range from 0 to 0.3 m-1, and can distinguish the orientation of curvature experienced by the fiber as the attenuation dip producing either a blue or red wavelength shift, by virtue of the asymmetry of D-shaped fiber cladding. In addition, by tracking both resonant wavelengths of the MZI and embedded FBG, the temperature and curvature can be measured simultaneously.
AB - A high-sensitivity curvature sensing configuration is implemented by using a fiber Mach-Zehnder interferometer (MZI) with D-shaped fiber Bragg grating (FBG). A segment of D-shaped fiber is fusion spliced into a single mode fiber at both sides, and then a short FBG is inscribed in the D-shaped fiber. The fiber device yields a significant spectrum sensitivity as high as 87.7 nm/m-1 to the ultralow curvature range from 0 to 0.3 m-1, and can distinguish the orientation of curvature experienced by the fiber as the attenuation dip producing either a blue or red wavelength shift, by virtue of the asymmetry of D-shaped fiber cladding. In addition, by tracking both resonant wavelengths of the MZI and embedded FBG, the temperature and curvature can be measured simultaneously.
KW - Curvature measurement
KW - D-shaped fiber
KW - fiber Bragg grating (FBG)
KW - Mach-Zehnder interferometer (MZI)
UR - http://www.scopus.com/inward/record.url?scp=85035816171&partnerID=8YFLogxK
U2 - 10.1109/JLT.2017.2776297
DO - 10.1109/JLT.2017.2776297
M3 - 文章
AN - SCOPUS:85035816171
SN - 0733-8724
VL - 36
SP - 742
EP - 747
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
IS - 3
M1 - 8119788
ER -