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

• Autorzy: Pishvai Bazargani H.
• Języki publikacji: EN

Abstrakty

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.

Twórcy

autor

Pishvai Bazargani H.

• Photonic and Nanocrystal Research Lab. (PNRL), Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz 51666-14671, Iran

Bibliografia

• [1] GAUTHIER R.C., MNAYMNEH K., Photonic band gap properties of 12-fold quasi-crystal determind through FDTD analysis, Optics Express 13(6), 2005, pp. 1985–1998.
• [2] HAN ZHAO, ZACCARIA R.P., JUN-FENG SONG, KAWATA S., HONG-BO SUN, Photonic quasicrystals exhibit zero-transmission regions due to translational arrangement of constituent parts, Physical Review B 79(11), 2009, p. 115118.
• [3] AGI K., BROWN E.R., MCMAHON O.B., DILL C., III MALLOY K.J., Design of ultrawideband photonic crystals for broadband antenna applications, Electronics Letters 30(25), 1994, pp. 2166–2167;
• [4] MEKIS A., CHEN J.C., KURLAND I., SHANHUI FAN, VILLENEUVE P.R., JOANNOPOULOS J.D., High transmission through sharp bends in photonic crystal waveguides, Physical Review Letters 77(18), 1996, pp. 3787–3790.
• [5] NAKA Y., IKUNO H., Two-dimensional photonic crystal L-shaped bent waveguide and its application to wavelength multi/demultiplexer, Turkish Journal of Electrical Engineering and Computer Sciences 10(2), 2002, pp. 245–256.
• [6] ZEXUAN QIANG, WEIDONG ZHOU, SOREF R.A., Optical add-drop filters based on photonic crystal ring resonators, Optics Express 15(4), 2007, pp. 1823–1831.
• [7] MOMENI B., HUANG J., SOLTANI M., ASKARI M., MOHAMMADI S., RAKHSHANDEHROO M., ADIBI A., Compact wavelength demultiplexing using focusing negative index photonic crystal superprisms, Optics Express 14(6), 2006, pp. 2413–2422.
• [8] WU L., MAZILU M., KRAUSS T.F., Beam steering in planar-photonic crystal: From superprism to supercollimator, Journal of Lightwave Technology 21(2), 2003, pp. 561–566.
• [9] LUPU A., CASSAN E., LAVAL S., EL MELHAOUI L., LYAN P., FEDELI J.M., Exprimental evidence for superprism phenomena in SOI photonic crystal, Optics Express 12(23), 2004, pp. 5690–5696.
• [10] ZOOROB M.E., CHARLTON M.D.B., PARKER G.J., BAUMBERG J.J., NETTI M.C., Complete photonic bandgaps in 12-fold symmetric quasicrystals, Nature 404, 2000, pp. 740–743.
• [11] BAYINDIR M., CUBUKCU E., BULU I., OZBAY E., Photonic band-gap effect, localization, and waveguiding in the two-dimensional Penrose lattice, Physical Review B 63(16), 2001, p. 161104(R).
• [12] CHAN Y.S., CHAN C.T., LIU Z.Y., Photonic band gaps in two dimensional photonic quasicrystals, Physical Review Letters 80(5), 1998, pp. 956–959.