Continuously Varying Thickness Interference Bandpass Filter for the Visible Spectral Range: Using Ion Beam Sputter Deposition

Table 1

Comparison of different parameters of a state-of-the-art optical filter with this work.

Author	Central wavelength (nm)	Stopband (nm)	Stopband (nm)	Materials used	No. of layers	Total thickness (μm)	Fabrication method	Min Tx in passband (%)	Max Tx in stopband (%)
Achieved results	550	130	300–1100	Nb2O5/SiO2	79	8.4	Dual ion beam sputter deposition	71	1.6
Burns et al.	399	32	200–1100	Ta2O5/ZrO2	227	23.4	Enhanced optical sputtering system	80	0.1