Fig. 3: Experimental model for illustration of Friedrich–Wintgen bound states in the continuum (FW BIC).
From: One-dimensional photonic bound states in the continuum
a 1D photonic crystal (PhC) conjugated with the anisotropic defect layer (ADL) and a metallic mirror. Local intensity of the electric field distribution for the transverse electric (TE) (blue) and transverse magnetic (TM) wave (red) near the FW BIC: asymmetric solution (ϕ = 50.6°, λ = 573.6 nm) in (b). b Numerical TM-polarized reflectance spectra vs anisotropy axis rotation angle ϕ for structures depicted in (a) with low-loss metal (refractive index nM = 0.14 + 20i). Magenta crosses correspond to the asymmetric solutions for BICs.
