Now showing items 1-5 of 5

    • Chiral metamaterial and high-contrast grating based polarization selective devices 

      Mutlu, Mehmet (Bilkent University, 2013)
      The utilization of purposely designed artificial media with engineered electromagnetic responses enables the obtaining of intriguing features that are either impossible or difficult to realize using readily available ...
    • Chiral metamaterials: From negative index to asymmetric transmission 

      Mutlu, Mehmet; Li, Zhaofeng; Özbay, Ekmel (IEEE, 2013)
      Chiral metamaterials are attractive for their intriguing properties such as negative refractive index, optical activity and circular dichroism, and asymmetric transmission. In this paper, we review the research we have ...
    • Dual-frequency division de-multiplexer based on cascaded photonic crystal waveguides 

      Akosman, Ahmet E.; Mutlu, Mehmet; Kurt, H.; Özbay, Ekmel (Elsevier, 2012-02-28)
      A dual-frequency division de-multiplexing mechanism is demonstrated using cascaded photonic crystal waveguides with unequal waveguide widths. The de-multiplexing mechanism is based on the frequency shift of the waveguide ...
    • Photonic crystal based multi-mode high-qcavity 

      Akosman, Ahmet Emin; Mutlu, Mehmet; Kurt H.; Özbay, Ekmel (IEEE, 2011)
      An optical race-track has been investigated in order to obtain a multi resonant structure with high-Q factors. Photonic crystal based structure provides strong field confinement and scalability in the dimensions of the ...
    • Tight-binding mechanism in slow light regime 

      Akosman, Ahmet Emin; Mutlu, Mehmet; Kurt, Hamza; Özbay, Ekmel (IEEE, 2011)
      In this study, tight-binding formalism is applied to a photonic crystal coupled cavity structure in order to investigate the characteristics of ultra slow light modes. Eigen-mode splitting is observed and resulting group ...