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    All-optical S-R flip-flop using dark-bright soliton conversion control
    (2012-10-02)
    Soysouvanh, S.
    ;
    Luangxaysana, K.
    ;
    Yoshida, M.
    ;
    Komine, N.
    ;
    Phongsanam, P.
    We propose a new design for all-optical S-R flip-flop using optical technique namely dark-bright soliton conversion control within an optical add-drop filter. In operation, all-optical data input logic '0', '1' is formed by dark soliton (D) and bright soliton (B) pulses, respectively. The conversion behaviour between dark and bright soliton pulses can be obtained and formed the logic pulses by a π/2 phase shifted device (i.e. an optical coupler), in which the binary logic operation can be formed simultaneously at the thought and drop ports, respectively. In all-optical S-R flip-flop application can be recognized as a simple and flexible system for forming the logic switching system. Numerical simulation results are obtained and confirmed for the useful application, in which the advanced logical system can be operated. © 2012 IEEE.
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    Novel all-optical flip-flop using dark-bright soliton conversion control
    (2012-07-09)
    Luangxaysana, K.
    ;
    Phongsanam, P.
    ;
    Mitatha, S.
    ;
    Yoshida, M.
    ;
    Komine, N.
    This study proposed a new design for all-optical S-R and D flip-flop using optical technique namely dark-bright soliton conversion control within an optical add-drop filter. In operation, all-optical data input logic '0', '1' is formed by dark soliton (D) and bright soliton (B) pulses, respectively. The conversion behavior between dark and bright soliton pulses can be obtained and formed the logic pulses by a π/2 phase shifted optical coupler device. The binary logic operation can be formed simultaneously at the through and drop ports, respectively. In application, the proposed scheme can be recognized as a simple and flexible system for forming the logic switching system. Numerical simulation results are obtained and confirmed for the useful application of an advanced logical system can be operated. © 2012 Asian Network for Scientific Information.