624314.fig.001a
(a) Silica nonadiabatic tapered fiber probe
624314.fig.001b
(b) Tapered POF probe
Figure 1: Experimental setup of the proposed relative humidity sensor based on two different probes (a) silica nonadiabatic tapered fiber (b) tapered POF which are coated with HEC/PVDF composite. Inset of (a) shows the sample of HEC/PVDF solution and its microscopic image.