Fig. 1. Refractive index curve of high refractive index material of Ti2O3

Fig. 2. Simulated transmittance curve of band-pass films surface

Fig. 3. Simulated transmittance curve of long-wave cutoff films surface

Fig. 4. Simulated transmittance curve of broad-band pass filter

Fig. 5. Measured transmittance curve of band-pass films surface

Fig. 6. Measured transmittance curve of long-wave cutoff films surface

Fig. 7. Measured transmittance curve of final sample piece