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      • Department of Electrical and Electronics Engineering
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      Asymmetric light propagation in chirped photonic crystal waveguides

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      Author
      Kurt H.
      Yilmaz, D.
      Akosman, A.E.
      Özbay, Ekmel
      Date
      2012
      Source Title
      Optics Express
      Print ISSN
      10944087
      Publisher
      Optical Society of American (OSA)
      Volume
      20
      Issue
      18
      Pages
      20635 - 20646
      Language
      English
      Type
      Article
      Item Usage Stats
      132
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      110
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      Abstract
      We report numerical and experimental investigations of asymmetric light propagation in a newly designed photonic structure that is formed by creating a chirped photonic crystal (PC) waveguide. The use of a non-symmetric distribution of unit cells of PC ensures the obtaining of asymmetric light propagation. Properly designing the spatial modulation of a PC waveguide inherently modifies the band structure. That in turn induces asymmetry for the light's followed path. The investigation of the transmission characteristics of this structure reveals optical diode like transmission behavior. The amount of power collected at the output of the waveguide centerline is different for the forward and backward propagation directions in the designed configuration. The advantageous properties of the proposed approach are the linear optic concept, compact configuration and compatibility with the integrated photonics. These features are expected to hold great potential for implementing practical optical rectifier-type devices. © 2012 Optical Society of America.
      Keywords
      Laser optics
      Light propagation
      Photonics
      Waveguides
      Backward propagation
      Centerlines
      Chirped photonic crystals
      Experimental investigations
      Integrated photonics
      Linear optics
      Optical diodes
      PC waveguides
      Photonic structure
      Spatial modulations
      Transmission behavior
      Transmission characteristics
      Unit cells
      Light transmission
      article
      computer aided design
      computer simulation
      equipment design
      equipment failure analysis
      instrumentation
      light
      radiation scattering
      surface plasmon resonance
      theoretical model
      Computer Simulation
      Computer-Aided Design
      Equipment Design
      Equipment Failure Analysis
      Light
      Models, Theoretical
      Scattering, Radiation
      Surface Plasmon Resonance
      Permalink
      http://hdl.handle.net/11693/21359
      Published Version (Please cite this version)
      http://dx.doi.org/10.1364/OE.20.020635
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      • Department of Electrical and Electronics Engineering 3524
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