DocumentCode
930001
Title
Highly Sensitive Liquid-Level Sensor Based on Etched Fiber Bragg Grating
Author
Binfeng Yun ; Na Chen ; Yiping Cui
Author_Institution
Adv. Photonics Center, Southeast Univ., Nanjing, China
Volume
19
Issue
21
fYear
2007
Firstpage
1747
Lastpage
1749
Abstract
A highly sensitive liquid-level sensor based on etched fiber Bragg grating (FBG) is proposed and demonstrated. The transmission dips of FBG spectra are affected by the fraction of the length of the etched FBG that is surrounded by the liquid. The experiments show that for a liquid-level variation of 24 mm, the transmission dip difference changes about 32 dB. Also in the linear region, a high sensitivity of 2.56 dB/mm is achieved.
Keywords
Bragg gratings; fibre optic sensors; level measurement; fiber Bragg grating; linear region; liquid-level sensor; transmission dip difference; Bragg gratings; Chemical processes; Chemical sensors; Couplings; Etching; Fiber gratings; Mechanical sensors; Optical fiber sensors; Refractive index; Temperature sensors; Etch; fiber Bragg grating (FBG); liquid-level sensor;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/LPT.2007.905093
Filename
4349172
Link To Document