Nature of the enhanced resonant modes in one-dimensional photonic random dimer systems

H. Khalfoun, M. Bouamoud, S. Bentata, L. Henrard, C. Vandenbem

Research output: Contribution to journalArticle

Abstract

The propagation of light in a one-dimensional multilayer stack is examined for a disordered system with short range correlation. As known in the random dimer model, pairing the defect elements at random breaks down the Anderson localization and opens a frequency window of extended propagating modes around the predicted conventional dimer resonance. By dealing with host and defect layers with identical phase thicknesses at both host and defect principal standing resonances, we demonstrate the existence of a new ballistic-like regime at an additional standing commuting resonance. Moreover, by suitably tuning the host standing and conventional defect dimer resonances relative to each other, the transmission responses are both turned into a ballistic transmission regime. By scaling the transmission coefficient over the system length within the resonance window, we analyse the nature of the propagating modes, i.e.ballistic or diffusive. Beyond the resonance, quantitative views on the different transmission regimes and their related phase transitions are examined, pointing out the possibility of designing attractive ballistic resonant optical devices with adjustable transmission responses.

Original languageEnglish
Article number125102
JournalJournal of Optics A: Pure and Applied Optics
Volume11
Issue number12
DOIs
Publication statusPublished - 26 Nov 2009

Keywords

  • Ballistic resonances and transmission regimes
  • Cellular and spatial disorders
  • Dimer and commuting resonances
  • Photonic crystals
  • Random dimer model

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  • Student Theses

    Etude des propriétés des hamiltoniens unidimensionnels aléatoires : Application au cas dimère

    Author: Khalfoun, H., 21 Apr 2010

    Supervisor: Henrard, L. (Supervisor), Deparis, O. (President), Lepere, M. (Jury), Bouamoud, M. (External person) (Co-Supervisor) & Charlier, J. (External person) (Jury)

    Student thesis: Doc typesDoctor of Sciences

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