Abstract (EN):
An optical fiber sensor based on a tapered-FBG coated with 150 nm-thick Pd film is proposed for hydrogen pressure detection. The FBG was written in a 50 ¿-diameter tapered fiberby DUV femtosecond laser technology. A second FBG was inscribed in the untapered fiber regionfor temperature compensation. The sensing head was able to detect the variation of hydrogen pressure in the range 0-780 kPa and a maximum sensitivity of 0.15 pm/kPa was achieved. © 2012 OSA.
Language:
English
Type (Professor's evaluation):
Scientific