Total reflection of near infrared range wave from subwavelength silicon 1D photonic crystal with small packing density

摘要

One-dimensional (1D) photonic crystals have been widely used in silicon photonics due to their simple structure and multiple working regimes. In this paper we present the computation of reflection and transmission spectra and spatial electric field patterns for 1D photonic crystal with packing density less than 10 percent with use of matrix Riccati equation technique in the theory of multiple electromagnetic wave scattering in inhomogeneous media. Narrow (Δλ approx. < 30 nm with maximum at λ = 1550 nm) reflectivity peaks reaching 100 percent maximum were observed for photonic crystals represented as periodically located silicon threads with rectangular or round cross section. The shape and dimensions of the threads were altered to investigate their influence on the peaks width.