Figure 3From: Controlling interferometric properties of nanoporous anodic aluminium oxideFabry-Perot fringe spectrum and relationship between d p and number of fringes. (a) Fabry-Perot fringe spectrum obtained from AAO with dp of 21, 32, and 40 nm showing different numbers of fringes and (b) graph showing the relationship between dp and number of fringes. The lp was kept constant (approximately 4 μm).Back to article page