Wavelength (300 - 2500 nm),

Angles (0˚), n0 = ns = Air = 1

Composite structures

Photonic crystals

Refractive index

Constant

Variables

Structure 1

TiO2/SiO2

n1 = 2.6142/

n2 = 1.4585

1) Thickness

50/50 nm

N = 1, 2, 4, 6, 8

2) Top layer constant d1, N = 8

50/50 nm

50/100 nm

50/150 nm

Structure 2

TiO2/SnO2

n1 = 2.6142/

n2 = 2.0

3) Bottom layer constant d2, N = 8

100/150 nm

150/150 nm

300/150 nm

500/150 nm

800/150nm

Structure 3

SiO2/SnO2

n1 = 1.458/ n2 = 2.0