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    Determination of FWHM for soliton trapping
    (2011-12-01)
    Afroozeh, A.
    ;
    Amiri, I. S.
    ;
    Ali, J.
    ;
    Yupapin, P. P.
    In this study an interesting system in which a bright and dark soliton pulse can be stopped inside a nonlinear waveguide is presented. Here, we propose a system consisting of a series of ring resonators for optical trapping within a nonlinear waveguide. The bright and dark solitons can be controlled and slowed down within the waveguide. The FWHM for the output signals are calculated and used as an optical memory. Bright and dark soliton behaviors within a micro and nano ring resonator are also investigated and described. The required pulse is filtered and amplified, can be controlled and localized within the system. The localized bright and dark solitons are stopped by controlling the input power, which means that the photon stopping can be controlled by light in a ring resonator. © Penerbit UTM Press, Universiti Teknologi Malaysia.
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    Optical dark and bright soliton generation and amplification
    (2011-11-11)
    Afroozeh, A.
    ;
    Amiri, I. S.
    ;
    Kouhnavard, M.
    ;
    Jalil, M. A.
    ;
    Ali, J.
    We propose two designed systems consist of series of micro ring resonator (MRR) and an add/drop multiplexer in which the optical dark and bright soliton pulse propagating within the nonlinear waveguides can be amplified which can be used in long communication system. The dark or bright soliton is input into designed systems and travels within the waveguide. A continuous soliton pulse is sliced into smaller pulses by the nonlinear effect which is known as chaos. In this way large bandwidth of optical signals can be obtained. The power amplification occurs when the soliton propagates along the MRRs or add/drop systems. The add/drop multiplexer system can itself be used to amplify the optical soliton when the bright soliton is input at the drop part of the system. In this work we have studied the generation of amplified pulse of optical dark and bright soliton when they propagating inside single systems or when they interact and collide during propagation inside an add/drop device. It means that amplified soliton pulse also can be obtained when two types of soliton i.e., dark and bright soliton collide with each other in a same system. In such a way the amplified dark soliton or bright soliton can be used to perform the long distance link. © 2011 American Institute of Physics.
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    Simulation of soliton amplification in micro ring resonator for optical communication
    (2011-01-01)
    Afroozeh, A.
    ;
    Amiri, I. S.
    ;
    Bahadoran, M.
    ;
    Ali, J.
    ;
    Yupapin, P. P.
    A system consisting of a series of micro ring resonator (MRR) is proposed. Optical dark and bright soliton pulses propagating through the nonlinear waveguides are amplified. This system can be used in long distance communication system. The dark and bright soliton is input into the designed system. The nonlinear effect contributes to segregation of continuous soliton pulse into smaller pulses. In this way large bandwidth of optical signals can be obtained. The power amplification occurs when the soliton propagates along the MRRs systems. In this research the concern is the generation of amplified pulse of optical dark and bright soliton while propagating in the MRR device. Simulated results show the amplification of bright soliton in which the input power increases from 0.6 W to 10.9331 W and 7.684 W at the trapped wavelength of 1520.428 nm and 1519.912 nm respectively. © Penerbit UTM Press, Universiti Teknologi Malaysia.