Fig. 1. Periodic PT symmetric structure (ABC)N

Fig. 2. Reflectance spectra and transmittance spectra under four incidence conditions with θ = 30° and H0=1600 Gauss. (a) Reflectance spectra; (b) transmittance spectra

Fig. 3. Transmittance spectra of the structure with different incident angles and H0=1650 Gauss. (a) θ=30°; (b) θ=45°; (c) θ=60°

Fig. 4. Relationship between the incident angle and band-edge position of transmittance

Fig. 5. Transmittance spectra with θ= 45° and H0=±1600 Gauss

Fig. 6. Transmittance spectra with different applied magnetic fields. (a) H0=1600 Gauss; (b) H0=1700 Gauss; (c) H0=1800 Gauss

Fig. 7. Relationship between the magnetic field and band-edge position of transmittance