Title :
Temperature Sensing Based on Ethanol-Filled Photonic Crystal Fiber Modal Interferometer
Author :
Qian, Wenwen ; Zhao, Chun-liu ; Chan, Chi Chiu ; Hu, Limin ; Li, Tao ; Wong, Wei Chang ; Zu, Peng ; Dong, Xinyong
Author_Institution :
Inst. of Optoelectron. Technol., China Jiliang Univ., Hangzhou, China
Abstract :
A modal interferometer made of a short ethanol-filled photonic crystal fiber (PCF) combined with a fully collapsed splicing with single-mode fibers (SMFs) is proposed for temperature measurement. Two fully collapsed splicing regions between the ethanol-filled PCF and SMFs excite and recombine two interfering modes in the ethanol-filled PCF. The interference spectrum of the ethanol-filled PCF is more sensitive to temperature than that of original PCF. By monitoring one peak wavelength shift of the ethanol-filled PCF modal interference spectrum, the temperature sensitivity reaches up to -0.35 nm/°C for a 3.25-cm long ethanol-filled PCF.
Keywords :
chemical sensors; fibre optic sensors; light interferometers; organic compounds; photonic crystals; temperature measurement; temperature sensors; SMF; ethanol-filled PCF modal interference spectrum; ethanol-filled PCF modal interferometer; ethanol-filled photonic crystal fiber modal interferometer; interference spectrum; single-mode fibers; size 3.25 cm; temperature measurement; temperature sensing; Ethanol; Optical fiber sensors; Optical interferometry; Splicing; Temperature measurement; Temperature sensors; Interferometers; optical fiber sensors; temperature sensors;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2012.2197822
