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Author: search.filters.author.Jalil, M. A.Subject: search.filters.subject.Dark soliton

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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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    Bright and dark soliton stopping using nonlinear waveguide
    (2011-05-02)
    Afroozeh, A.
    ;
    Aziz, M. S.
    ;
    Jalil, M. A.
    ;
    Ali, J.
    ;
    Yupapin, P. P.
    In this study we propose an interesting system in which a bright and dark soliton pulse can be stopped within a nonlinear nanowaveguide. The system consists of micro and nano ring resonators, in which soliton pulse is input into the system and stopped pulse can be achieved within the nonlinear waveguide. A soliton input is chopped by the nonlinear effects into smaller pulses (chaos). The required pulse is filtered and amplified, which can be controlled and localized within the nonlinear waveguide. The localized bright and dark solitons are stopped by controlling the input power, which means that the photons stopping is controlled by light.