Title :
Double-Layer antireflection coating design for semi-infinite one-dimensional photonic Crystals
Author :
Park, Yeonsang ; Jeon, Heonsu
Author_Institution :
Sch. of Phys. & the Nano-Syst. Inst., Seoul Nat. Univ., South Korea
Abstract :
A theoretical formalism is established for double-layer (DL) antireflection coating (ARC) on a one-dimensional (1-D) photonic crystal (PC). Conventional DL-ARC for a bulk is equally applicable for a 1-D PC when the bulk substrate index is replaced with the optical admittance, which can be obtained from the electromagnetic Bloch waves of the infinite 1-D PC. Numerical calculations are performed for a model structure composed of GaAs and AlAs-oxide layers to confirm the validity of the theory. In terms of realization and practicality, this DL-ARC is expected to be superior to the single-layer version.
Keywords :
III-V semiconductors; aluminium compounds; antireflection coatings; gallium arsenide; optical constants; optical design techniques; optical multilayers; photonic crystals; GaAs-AlAs; double-layer antireflection coating design; electromagnetic Bloch waves; optical admittance; semiinfinite one-dimensional photonic crystals; Admittance; Coatings; Optical materials; Optical reflection; Optical refraction; Optical variables control; Personal communication networks; Photonic band gap; Photonic crystals; Refractive index; 1-D PCs; Bloch wave; DL-ARC; double-layer antireflection coating; one-dimensional photonic crystals; optical admittance;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2004.832436
