An ultra-sensitive liquid-level indicator based on an etched chirped-fiber bragg grating

Hung Ying Chang; Yu-Chung Chang; Hao Jan Sheng; Ming Yue Fu; Wen Fung Liu; Raman Kashyap

doi:10.1109/LPT.2015.2494611

An ultra-sensitive liquid-level indicator based on an etched chirped-fiber bragg grating

Hung Ying Chang, Yu-Chung Chang, Hao Jan Sheng, Ming Yue Fu, Wen Fung Liu, Raman Kashyap

Department of Electrical Engineering

Research output: Contribution to journal › Article

29 Citations (Scopus)

Abstract

A novel ultra-sensitive liquid-level indicator using an etched chirped fiber Bragg grating is experimentally demonstrated with a sensitivity of 1.214 nm/mm for detecting tens of micro-meter liquid-level variation. The operation mechanism is based on the superposition wavelength-peak shift created by the overlap between the spectrum of the etched CFBG section immersed in the liquid and the spectrum of the rest of the grating in air. This sensor may be used to precisely measure the liquid-level variation in bio-hazardous systems or industrial containers that demand accurate interrogation of the amounts of the contents.

Original language	English
Article number	2494611
Pages (from-to)	268-271
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	28
Issue number	3
DOIs	https://doi.org/10.1109/LPT.2015.2494611
Publication status	Published - 2016 Feb 1

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All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

Cite this

Chang, H. Y., Chang, Y-C., Sheng, H. J., Fu, M. Y., Liu, W. F., & Kashyap, R. (2016). An ultra-sensitive liquid-level indicator based on an etched chirped-fiber bragg grating. IEEE Photonics Technology Letters, 28(3), 268-271. [2494611]. https://doi.org/10.1109/LPT.2015.2494611

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10.1109/LPT.2015.2494611