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    Network system engineering by controlling the chaotic signals using silicon micro ring resonator
    (2012-10-15)
    Shahidinejad, A.
    ;
    Nikoukar, A.
    ;
    Amiri, I. S.
    ;
    Ranjbar, M.
    ;
    Shojaei, A. A.
    We investigate nonlinear behaviors of light known as bifurcation and chaos within a nonlinear silicon microring resonator (SMRR). The research is used to controlling SMRR's behaviors such as chaos applicable in security coding systems. The variable parameters affect the bifurcation to be happened in smaller roundtrip among total round trip of 20000 or input power. Simulated Results show that rising of the nonlinear refractive indices, coupling coefficients and radius of the SMRR leads to descending in input power and round trips wherein the bifurcation occurs. As result, bifurcation or chaos behaviors are seen at lower input power of 44 W, where the nonlinear refractive index is n <inf>2</inf>=3.2×10 <sup>-20</sup> m <sup>2</sup>/W. Smallest round trips of 4770 and 5720 can be seen for the R=40 μm and κ = 0.1 respectively. The controlled chaotic signals from the SMRR are passing through a polarizer beam splitter to generate quantum binary codes which are used in wireless network communication. © 2012 IEEE.
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    Packet switching start-stop bits generation based on bifurcation behavior of light in a micro ring resonator
    (2010-02-01)
    Mitatha, S.
    ;
    Dejhan, K.
    ;
    Yupapin, P. P.
    ;
    Pornsuwancharoen, N.
    This paper proposes the interesting nonlinear behavior of light known as bifurcation, where the use of such behavior in a micro ring resonator to form the secure digital codes for optical packet switching application is demonstrated. A new concept of the stop-start bits in an optical packet switching protocol is formed by using the bifurcation codes. Bifurcation is introduced when light is input into a nonlinear micro ring device, where the refractive index of an InGaAsP/InP is one of device parameters. The other parameters of the device are coupling coefficient (K) and the ring radius (R), where the ring radii used are ranged from 5 to 10 μm. Simulation results obtained have shown that the packet switching data can be secured by using the generated start-stop bits as the secured codes. © 2008 Elsevier GmbH. All rights reserved.
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    Packet switching start-stop bits generation based on bifurcation behavior of light in a micro ring resonator
    (2008-01-01)
    Pornsuwancharoen, N.
    ;
    Kumbun, J.
    ;
    Yupapin, P. P.
    This paper proposes the interesting nonlinear behavior of light known as bifurcation, where the use of such behavior in a micro ring resonator to form the secure digital codes for optical packet switching application is demonstrated. A new concept of the stop-start bits in an optical packet switching protocol is formed by using the bifurcation codes. The bifurcation is introduced when light is input into a nonlinear micro ring device, where the refractive index of an InGaAsP/InP is one of device parameters. The other parameters of the device are coupling coefficient (K) and the ring radius (R), where the ring radii used are ranged from 5-10 microns. Simulation results obtained have shown that the packet switching data can be secured by using the generated start-stop bits as the secured codes. © 2008 Trans Tech Publications, Switzerland.