Fig. 5From: Tapered photonic crystal fibers coated with ultra-thin films for highly sensitive bio-chemical sensingCalculated results of a relative intensity at the taper output at different hydrogen concentrations (volume %): (a) 1.2%, (b) 2.0%, (c) 3.8%, and (d) 5.6% (solid curves); circles are obtained with experiments, dashed lines indicate, for comparison, an interpolation of experimental data at a zero hydrogen concentrationBack to article page