2.5 Accidental-Degeneracy-Induced Dirac Cones in Photonic Crystals
35
(a)
(b) ω = 0.5 × 10 9 rad/s
(c) ω = 1.0 × 10 9 rad/s
(d) ω = 1.5 × 10 9 rad/s
Fig. 2.7 The electric field distribution inside the NZPI medium at different frequencies
(a) Lattice
(b) Unit cell
Fig. 2.8 Zero-index metamaterial proposed by Huang et al. in 2011 [27]
35
(a)
(b) ω = 0.5 × 10 9 rad/s
(c) ω = 1.0 × 10 9 rad/s
(d) ω = 1.5 × 10 9 rad/s
Fig. 2.7 The electric field distribution inside the NZPI medium at different frequencies
(a) Lattice
(b) Unit cell
Fig. 2.8 Zero-index metamaterial proposed by Huang et al. in 2011 [27]