Special optical fiber for temperature sensing based on cladding-mode resonance.
A fiber-optic temperature sensor by using a multi-cladding special fiber is presented. It works on the basis of leaky mode resonance from fiber core to outer cladding. With the thin-thickness inner cladding, the cladding mode is strongly excited and the resonant spectrum is very sensitive to the refractive index variation of coating material. By coating the special fiber with temperature-sensitive silicone, the temperature response was investigated experimentally from -20 degrees C to 80 degrees C. The results show high temperature sensitivity (240 pm/degrees C at 20 degrees C) and good repeatability.
Pang
Fufei
F
The Key Lab of Specialty Fiber Optics and Optical Access Network, Shanghai University, Shanghai, PR China. fpang@shu.edu.cn
Xiang
Wenchao
W
Guo
Hairun
H
Chen
Na
N
Zeng
Xianglong
X
Chen
Zhenyi
Z
Wang
Tingyun
T
D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D055100:Optical Fibers; D012031:Refractometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013821:Thermometers; D014159:Transducers