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Polyvinyl alcohol–coated hybrid fiber grating for relative humidity sensing
fiber Bragg grating tilted-fiber Bragg grating humidity sensing polyvinyl alcohol
2013/5/27
A relative humidity (RH) sensor based on a hybrid fiber grating coated with polyvinyl alcohol is proposed and demonstrated experimentally. The hybrid fiber grating is formed by superimposing a normal ...
Humidity-Induced Spectral Shift in a Cross-Dispersion Echelle Spectrometer and Its Theoretical Investigation
Emission spectrometry Position shift of a spectral line Spectral-shift equation
2011/4/28
The relationship between ambient relative humidity H and the position shift of a spectral line was investigated both experimentally and theoretically. An echelle-based ICP emission spectrometer equip...
Optical humidity sensing behaviour of sol–gel processed nanostructured ZnO films
humidity sensors optical fiber
2011/5/10
This paper reports the humidity sensing behaviour of sol–gel processed ZnO films deposited on U-shaped borosilicate rods as substitute of optical fiber having the same radius of curvature. The films p...