Crystal structure

Polarization

Band

$\frac{\omega a}{2\pi c}$

The mid-gap frequency of the gap (ω_m)

Band-gap width

(Δω)

Gap-midgap ratio

(Δω/ω_m)

Gap percentage

(%)

Hexagonal lattice of germanium rods in air

TE

1^st

0.21613 - 0.37472

0.2957508839032

0.1582820154111

0.5351869564078

53.52

2^nd

0.44292 - 0.53025

0.4866459910868

0.08734716525899

0.1794881019443

17.95

3^rd

0.69928 - 0.72882

0.7141210658904

0.02931735176066

0.04105375567392

4.11

TM

1^st

0.40284 - 0.44292

0.4233175504743

0.03957080196718

0.09347782042782

9.35