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Applied Physics B

, Volume 95, Issue 3, pp 537–543 | Cite as

Optically-induced defect states in photonic lattices: formation of defect channels, directional couplers, and disordered lattices leading to Anderson-like light localization

  • A. Kanshu
  • C. E. Rüter
  • D. KipEmail author
  • V. M. Shandarov
Article

Abstract

Formation of defect states by optical induction in one-dimensional photonic lattices fabricated in photorefractive lithium niobate is investigated experimentally. First, by using a moving narrow laser beam for defect recording, we investigate light propagation in samples containing single line defects and adjacent channel defects forming directional couplers. Then, these results are used to create lattices with randomly distributed defects, resembling a disordered optical potential. In such lattices, wave propagation is found to change from ballistic transport to transverse Anderson-like light localization as a function of induced disorder.

PACS

42.65.Tg 63.20.Pw 42.25.Gy 

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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • A. Kanshu
    • 1
  • C. E. Rüter
    • 1
  • D. Kip
    • 1
    Email author
  • V. M. Shandarov
    • 2
  1. 1.Institute of Energy Research and Physical TechnologiesClausthal University of TechnologyClausthal-ZellerfeldGermany
  2. 2.State University of Control Systems and RadioelectronicsTomskRussia

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