Simulation of an All Optical Switch in Linear State
الموضوعات : Majlesi Journal of Telecommunication DevicesSheler Maktoobi 1 , Rahim Ghayour 2
1 - Department of Electrical Engineering, Fars Science and Research Branch, Islamic Azad University, Shiraz, Iran
2 - Department of Electrical Engineering, Fars Science and Research Branch, Islamic Azad University, Shiraz, Iran
الکلمات المفتاحية: en,
ملخص المقالة :
Switching is a principle process in digital computers and signal processing systems. The growth of optical signal processing systems, draws particular attention to design of ultra-fast optical switches. In this paper to investigate the operation of the photonic crystal switches, several methods are described. Among different methods, FDTD is a preferable method and is used. We have studied the application of photonic crystal lattices, the physics of optical switching and different types of all optical photonic crystal switches. In this paper, an all optical switch based on photonic crystal directional coupler has been simulated and analyzed by the finite difference time domain (FDTD) method. In this paper, a different structures with changes in central row rods (0.12a) in all optical directional coupler switch have been proposed then electric field intensity and the power output that are two factors to improve the switching performance and the device efficiency, have been investigated and simulated by using COMSOL software.
[1] K, Thomas F., De La Rue, Richard M.,S., Brand,“Two-dimensional photonic-bandgap structures operating at near-infrared wavelengths”. Nature, 383: 699- 702, 1996.
[2] J., Zimmermann, M., Kamp, A., Forchel, R., Marz, “Photonic crystal waveguide directional couplers as wavelength selective optical filters”, Opt. Commun. 230 ,pp.387–392, 2004.
[3] S.H., Jeong, N., Yamamoto, J., Sugisaka, M., Okano and K., Komori,“GaAs-based two dimensional photonic crystal slab ring resonator consisting of a directional coupler and bent waveguides”, J. Opt Soc. Am. B (JOSA-B) Vol.24, No.7,1951–1959, 2007.
[4] A., Martinez, F., Cuesta and J., Marti, “Ultra short 2-D photonic crystal directional couplers”, IEEE Photon. Technol. Lett. , Vol.15, No.5, pp 694–696, 2001.
[5] F., Cuesta-Soto, A., Martinez, B., Garcia-Banos and J., Marti, “Numerical analysis of all optical switching based on a 2-D nonlinear photonic crystal directional coupler”, IEEE Select. Top. Quantum Electron. Vol.10, No.5,pp. 1101–1106, 2010.
[6] Eshaghi, A., Mirsalehi, M.M., Attari, A.R., MalekAbadi, S.A “All-optical switching structure using nonlinear photonic crystal directional coupler”, PIERS Proceedings: pp.587-591, 2008
[7] Maksymov, I.S., Marsal, L.F and Pallares, J., “Modeling of two photon absorption in nonlinear photonic crystal all-optical switch”, Elsevier: Optics communications, 269: pp.137-141, 2006.
[8] Yanik, M.F., Fan, S., “All-optical transistor action with bistable switching in a photonic crystal cross-waveguide geometry” optic letters, Vol. 28, No. 24:pp.2506-2508, 2003.
[9] Eshaghi, A., Mirsalehi, M.M., Attari, A.R., and MalekAbadi, S.A., “All-optical switching structure using nonlinear photonic crystal directional coupler”, PIERS Proceeding, pp.587-591,
