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      Multifunctional blazed gratings for multiband spatial filtering, retroreflection, splitting, and demultiplexing based on C2 symmetric photonic crystals

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      Author(s)
      Serebryannikov, A.E.
      Skigin, D.C.
      Vandenbosch, G.A.E.
      Özbay, Ekmel
      Date
      2022-06-08
      Source Title
      Journal of Applied Physics
      Electronic ISSN
      1089-7550
      Publisher
      AIP Publishing LLC
      Volume
      131
      Issue
      22
      Pages
      1 - 11
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      The concept of multifunctional reflection-mode gratings that are based on rod-type photonic crystals (PhCs) with 𝐶2 symmetry is introduced. The specific modal properties lead to the vanishing dependence of the first-negative-order maximum on the angle of incidence and the nearly sinusoidal redistribution of the incident-wave energy between zero order (specular reflection) and first negative diffraction order (deflection) at frequency variation. These features are key enablers of diverse functionalities and the merging of different functionalities into one structure. The elementary functionalities, of which multifunctional scenarios can be designed, include but are not restricted to multiband spatial filtering, multiband splitting, retroreflection, and demultiplexing. The proposed structures are capable of multifunctional operation in the case of a single polychromatic incident wave or multiple mono-/polychromatic waves incident at different angles. The generalized demultiplexing is possible in the case of several polychromatic waves. The aforementioned deflection properties yield merging demultiplexing with splitting in one functionality. In turn, it may contribute to more complex multifunctional scenarios. Finally, the proposed PhC gratings are studied in transmissive configuration, in which they show some unusual properties.
      Permalink
      http://hdl.handle.net/11693/111546
      Published Version (Please cite this version)
      https://doi.org/10.1063/5.0093989
      Collections
      • Department of Electrical and Electronics Engineering 4011
      • Department of Physics 2550
      • Institute of Materials Science and Nanotechnology (UNAM) 2256
      • Nanotechnology Research Center (NANOTAM) 1179
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