Open AccessHigh-sensitivity temperature-independent differential pressure sensor using fiber Bragg gratings
Author(s) -
Hao-Jan Sheng,
WenFung Liu,
Kuei-Ru Lin,
Sheau-Shong Bor,
MingYue Fu
Publication year - 2008
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.016013
Subject(s) - fiber bragg grating , materials science , sensitivity (control systems) , optics , fiber optic sensor , pressure sensor , phosfos , optical fiber , differential pressure , pressure measurement , refractive index , temperature measurement , differential (mechanical device) , optoelectronics , polarization maintaining optical fiber , physics , electronic engineering , quantum mechanics , meteorology , mechanics , thermodynamics , engineering
By means of novel packaged-structure design, a temperature independent differential pressure sensor based on fiber Bragg gratings with high sensitivity is experimentally demonstrated. The differential pressure sensitivity of the sensor can reach to 821.87nm/MPa. This device can also be used for simultaneous measurement of temperature and differential pressure, which is suitable for applications involving measurement of liquid level, liquid density or specific gravity detection.