Title :
Liquid level sensing based on single leaky mode attenuation
Author :
Linlin Xue ; Zhefu Wu ; Di Che ; Li Yang
Author_Institution :
Coll. of Inf. Eng., Zhejiang Univ. of Technol., Hangzhou, China
Abstract :
A liquid level sensor based on single leaky mode attenuation in a single-mode-multimode-single-mode (SMS) fiber structure is proposed and demonstrated, which aims at the liquid whose refractive index is higher than that of the silica fiber. Its operating principle is investigated theoretically by using the mode expansion method, and a monotonic and linear sensing response is obtained. Experiments are then carried out to verify the theoretical analysis.
Keywords :
fibre optic sensors; level measurement; optical attenuators; refractive index measurement; SMS fiber structure; linear sensing response; liquid level sensor; mode expansion method; monotonic sensing response; refractive index; silica fiber; single leaky mode attenuation; single-mode-multimode-single-mode fiber structure; Attenuation; Interference; Liquids; Optical fiber sensors; Optical fibers; leaky mode; liquid level sensor; optical fiber device; optical fiber sensing;
Conference_Titel :
Industrial Electronics and Applications (ICIEA), 2014 IEEE 9th Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4799-4316-6
DOI :
10.1109/ICIEA.2014.6931537
