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Analyzing symmetry in photonic band structure of gyro-magnetic photonic crystals

Najafi, A ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.1117/12.895521
  3. Publisher: 2011
  4. Abstract:
  5. In the band structure analysis of photonic crystals it is normally assumed that the full photonic gaps could be found by scanning high-symmetry paths along the edges of Irreducible Brillouin Zones (IBZ). We have recently shown [1] that this assumption is wrong in general for sufficiently symmetry breaking geometries, so that the IBZ is exactly half of the complete BZ. That minimal required symmetry arises from the requirement on time-reversal symmetry. In this paper we show that even that requirement might be broken by using gyro-magnetic materials in the composition of photonic structures we can observe that the IBZ extends fully to the boundaries of the complete BZ, that is IBZ must be as the same as BZ
  6. Keywords:
  7. Band structure ; Photonic crystal ; Plane wave expansion ; Symmetry ; Band structure analysis ; Brillouin zones ; Photonic band structures ; Photonic gaps ; Photonic structure ; Plane-wave expansions ; Symmetry-breaking ; Time reversal symmetries ; Gyroscopes ; Magnetic materials ; Nanostructures ; Optical properties ; Photonic crystals ; Plasmons ; Crystal symmetry
  8. Source: Proceedings of SPIE - The International Society for Optical Engineering ; Volume 8096 , 2011 ; 0277786X (ISSN) ; 9780819487063 (ISBN)
  9. URL: http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1272575