2001
DOI: 10.1364/ao.40.006319
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Forbidden gaps in finite periodic and quasi-periodic Cantor-like dielectric multilayers at normal incidence

Abstract: Periodic and quasi-periodic Cantor-like bandgap structures that bordered upon a medium of refractive index n(0) are analyzed. An immersion model is used with the assumption that each layer is embedded between two identical regions of refractive index n(0) and thickness d(0), where d(0) is set equal to zero. Transmittance and group velocity are determined. Their dependence on n(0) is emphasized. Relations for the midgap value of the normalized group velocity are given. By use of these relations, diagrams are co… Show more

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Cited by 9 publications
(10 citation statements)
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“…Subsequently, a wealth of photonic quasicrystals have been conceived, the most outstanding ones being Thue-Morse [19][20][21] and Cantor [22][23][24][25][26]. Both classical (light) and quantum (electrons) waves in these media have been shown to have a self-similar energy spectrum [27], a pseudo-bandgap of forbidden frequencies [28], and critically localized states [29] whose wave functions are distinguished by power law asymptotes and selfsimilarity [30,31].…”
Section: Introductionmentioning
confidence: 99%
“…Subsequently, a wealth of photonic quasicrystals have been conceived, the most outstanding ones being Thue-Morse [19][20][21] and Cantor [22][23][24][25][26]. Both classical (light) and quantum (electrons) waves in these media have been shown to have a self-similar energy spectrum [27], a pseudo-bandgap of forbidden frequencies [28], and critically localized states [29] whose wave functions are distinguished by power law asymptotes and selfsimilarity [30,31].…”
Section: Introductionmentioning
confidence: 99%
“…As anticipated in the Introduction, an infinite multilayer is unrealistic in practice, and one should consider N -period finite structures, for which the previous standard approach fails [17,18].…”
Section: Finite Periodic Structures and Iwasawa Decompositionmentioning
confidence: 99%
“…Subsequently, a wealth of other photonic quasicrystals have been conceived, the most outstanding ones being Thue-Morse [37][38][39] and Cantor [40,41].…”
Section: Introductionmentioning
confidence: 99%