Omnidirectional reflection from Fibonacci quasi-periodic one-dimensional photonic crystal

• Published in: Optics communications Vol. 198; no. 4; pp. 273 - 279
• Main Authors: Lusk, D, Abdulhalim, I, Placido, F
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01-11-2001; Elsevier Science
• Subjects: Edge and boundary effects; reflection and refraction; Exact sciences and technology; Fibonacci series; Fundamental areas of phenomenology (including applications); Multilayers; Omnidirectional reflection; Optical materials; Optics; Photonic bandgap materials; Photonic crystals; Physics; Quasi-periodic structures; Thin film optics; Wave optics; Multilayers; Thin film optics; 42.70−a; Omnidirectional reflection; Fibonacci series; Photonic crystals; 85.60.J; 41.20−Jb; Quasi-periodic structures; Thin films; Photonic crystal; Fibonacci sequence; Theoretical study; Electromagnetic wave reflection; One dimensional structure; Quasi periodic structure
• ISSN: 0030-4018; 1873-0310
• DOI: 10.1016/S0030-4018(01)01531-0

It is shown that omnidirectional reflection (ODR) is possible from quasi-periodic isotropic dielectric stacks following a Fibonacci sequence (FS). The transition from truly periodic to fully quasi-periodic structure is investigated by building periodic structures having unit cells made of FS of order
j. The number of periods required to achieve ODR decreases as
j increases until only a single period is required at which the structure is fully quasi-periodic. As compared to the periodic case, for the quasi-periodic structure the spectral range is wider, the thickness of the single layers is smaller and the tolerance on the layer thicknesses is smaller.