Passband and defective bands in photonic and quasi-crystals

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

2 Scopus Citations
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Author(s)

  • S. H. XU
  • Y. P. ZHU
  • L. W. WANG
  • P. X. YANG
  • Paul CHU

Detail(s)

Original languageEnglish
Pages (from-to)664 - 671
Journal / PublicationJournal of the Optical Society of America B: Optical Physics
Volume31
Issue number4
Publication statusPublished - 1 Apr 2014

Abstract

The origin of the passband in one-dimensional photonic crystals and Fibonacci quasi-crystals is investigated by the transmission spectra and effective medium theory. The interference and coupling effects influence the formation and properties of the passbands, which can be divided into the basic band and subband formed by coupling interference modes and inhomogeneous dielectric constants, respectively. The optimal length can be obtained through a transcendental equation to show the maximum bandgap for a photonic crystal at the balance condition between interference and coupling effects. By changing the sequence of the two dielectric materials to fabricate a photonic crystal heterostructure, composed of the photonic crystal and quasi-crystal, an enlarging photonic bandgap can be obtained, since the width of the dielectric and air bands can be narrowed by decreasing the photon coupling effect, and the subband and defective band can be eliminated. The effective medium theory provides a good understanding about the formation mechanism of passbands in photonic and quasi-crystals. © 2014 Optical Society of America.

Citation Format(s)

Passband and defective bands in photonic and quasi-crystals. / XU, S. H.; ZHU, Y. P.; WANG, L. W.; YANG, P. X.; CHU, Paul.

In: Journal of the Optical Society of America B: Optical Physics, Vol. 31, No. 4, 01.04.2014, p. 664 - 671.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal