Now showing items 1-7 of 7

    • Characterization of photonic crystals at microwave frequencies 

      Temelkuran, Burak (Bilkent University, 1996)
      VVe investigated the surface reflection properties of layer-by-layer photonic crystals, for dielectric and metallic based photonic crystals. By using a FabryPerot cavity analogy with the reflection-phase information of ...
    • Highly directional resonant antennas built around photonic crystals 

      Özbay, Ekmel; Temelkuran, Burak; Bayındır, Mehmet; Biswas, R.; Sigalas, M. M.; Tuttle, G.; Ho, K. M. (IEEE, 1999)
      We report a photonic crystal-based resonant antenna with a very high directivity and gain. The layer-by-layer dielectric photonic crystal we used in our experiments was designed to have a three dimensional band gap with a ...
    • Microwave applications of photonic band gap structures 

      Temelkuran, Burak; Bayındır, Mehmet; Özbay, Ekmel; Biswas, R.; Sigalas, M. M.; Tuttle, G.; Ho, K.-M. (IEEE, 2000-10)
      We have investigated two major applications of photonic band gap materials. We demonstrated the guiding and bending of electromagnetic waves through planar waveguides built around layer-by-layer photonic crystals. We then ...
    • Photonic-crystal-based resonant-cavity-enhanced detectors 

      Temelkuran, Burak; Özbay, Ekmel; Kavanaugh, J. P.; Tuttle, G.; Ho, K. M. (IEEE, 1998)
      A layer-by-layer three-dimensional photonic crystal, with a full photonic bandgap (PBG) in all directions is proposed. The electrical fields in the cavities of this crystal are usually enhanced, and by placing active devices ...
    • Physics and applications of photonic crystals 

      Temelkuran, Burak (Bilkent University, 2000)
      We first fabricated a dielectric based layer-by-layer photonic crystal, with a three-dimensional photonic band gap at microwave frequencies. We investigated the transmission, reflection and defect characteristics of the ...
    • Reflection properties and defect formation in metallic photonic crystals 

      Özbay, Ekmel; Temelkuran, Burak; Sigalas, M.; Tuttle, G.; Soukoulis, C. M.; Ho, K. M. (IEEE, 1998-05)
      The reflection properties of layer-by-layer metallic photonic crystals were investigated using metallic photonic crystals with simple-tetragonal (st) structure. The observed properties were used to predict defect formation ...
    • Resonant cavity-enhanced detectors embedded in photonic crystals 

      Temelkuran, Burak; Özbay, Ekmel (IEEE, 1996)
      Summary form only given. We demonstrate the resonant-cavity-enhanced effect by placing microwave detectors in a layer-by-layer photonic crystal. We used the output of a network analyzer as the microwave source, and fed the ...