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Optica Applicata

Tytuł artykułu

A novel structure for 4-channel all optical demultiplexer using 12-fold photonic quasicrystal

Autorzy Pishvai Bazargani, H. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
EN In this work, a new structure for a 4-channel all optical demultiplexer has been designed, using a 12-fold photonic quasicrystal (PQC). The structure used in this research is composed of air rods of 150 nm in diameter, arranged on silicon nitride substrate with a pitch of 260 nm and lattice constant of 0.25. The area of the structure is only 16 ?m2 which is quite interesting for optical integrated circuit applications. The four channels are separated by introducing some defects to the crystal. Also, superprism effect in PQCs has been investigated by changing the tiling angle of input Gaussian modulated wave. Finally, four channels with spacing of 7.8 nm between channels one and two, 3.6 nm between channels two and three and 7.3 nm between channels three and four, around 0.6 ?m as the central wavelength have been separated. The crosstalk level between adjacent channels is about -8 dB for channels one and two, -3 dB for channels two and three and -6.5 dB for channels three and four.
Słowa kluczowe
EN photonic quasicrystal   demultiplexer   defect   superprism effect  
Wydawca Oficyna Wydawnicza Politechniki Wrocławskiej
Czasopismo Optica Applicata
Rocznik 2011
Tom Vol. 41, nr 3
Strony 661--668
Opis fizyczny Bibliogr. 12 poz.
autor Pishvai Bazargani, H.
  • Photonic and Nanocrystal Research Lab. (PNRL), Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz 51666-14671, Iran
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