Author/Authors :
L.، Zhang, نويسنده , , K.، Zhou, نويسنده , , I.، Bennion, نويسنده , , X.، Chen, نويسنده ,
Abstract :
A novel and simple optical chemsensor concept based on cladding etched Bragg gratings UV-inscribed in D-fibre is reported. The sensitisation process of the Bragg structure to the refractive index of surrounding-medium under HF-etching has been investigated. Two etched devices were used to measure the concentrations of sugar solution, giving sensitivity as high as 0.02 nm/%.
