Fig. 1. Structure of waveguide section and distribution of light intensity

Fig. 2. Hydrogel polymer waveguide preparation device and hydrogel polymer waveguide

Fig. 3. Absorption detection device and rhodamine B absorption spectrum

Fig. 4. Fluorescence detection device and rhodamine B fluorescence spectrum

Fig. 5. Observation device of light output change in waveguide section

Fig. 6. Variation of light output in waveguide section