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Author: search.filters.author.Phongsanam, Prapas

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    Multi-Wavelength optical network security generated by modified add-drop filter
    (2017-10-19)
    Tunsiri, Surachai
    ;
    Soysouvanh, Saysamone
    ;
    Mitatha, Somsak
    ;
    Phongsanam, Prapas
    ;
    Muangsong, Ittisak
    The multi-wavelength optical network security system generated by using an optical nonlinear material within the modified add-drop optical filter for network security is proposed. By using the dark-bright nonlinear pulse control, the optical multi-wavelength can be constructed and applied to securely transport within the network. The advantage is that the dark and bright nonlinear pair (components) can securely propagate for long distance without electromagnetic interference. In operation, the optical intensity from modified add-drop optical filter is established.
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    All optical logic NAND gate using dark-bright soliton conversion control
    (2012-11-12)
    Soysouvanh, Saysamone
    ;
    Phongsanam, Prapas
    ;
    Luangxaysana, Khanthanou
    ;
    Mitatha, Somsak
    ;
    Noriyuki, Komine
    In this paper, we present a new concept of all-optical gates using Dark-Bright soliton conversion behaviors within a modified add/drop filter. The soliton can be used to generate logic data "1" and "0" using for optical gates. We have designed a photonic circuit for all-optical logic NAND Gate using dark-bright soliton conversion control within an optical add-drop multiplexer. The input and control logic ̀0', ̀1' are represented by dark (D) and bright (B) soliton pulses, respectively. We found that the simultaneous optical logic NAND Gate at the through port can be performed.
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    All-optical adder/substractor using dark-bright soliton conversion control
    (2012-10-02)
    Phongsanam, Prapas
    ;
    Mitatha, Somsak
    ;
    Yupapin, Preecha P.
    We propose a new design of most important logical circuits using optical devices for all-optical addition/subtraction applications, in which the simultaneous operation of addition/subtraction arithmetic operation can be performed by using the dark-bright soliton conversion control. In operation, all-optical data input for addition/subtraction of binary operation logic '0' and '1' are formed by dark soliton (D) and bright soliton (B) pulses, respectively. By using the dark-bright soliton conversion behavior, the conversion between dark and bright soliton pulses can be obtained and form the logic pulses by a π/2 phase shifted device (i.e. an optical coupler), in which the binary 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, which can be used for advanced logical system. © 2012 IEEE.
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    High capacity frequency comb generated by a PANDA ring resonator
    (2012-10-02)
    Luangxaysana, Khanthanou
    ;
    Yoshida, Masahiro
    ;
    Komine, Noriyuki
    ;
    Phongsanam, Prapas
    ;
    Mitatha, Somsak
    This paper we propose a new system design for optical frequency comb generator (OFCG) using PANDA ring resonator over terahertz span. This scheme can be generated high capacity frequency comb signal tens to hundreds of frequencies by using a Dark-Bright soliton pulse driven, so that we can obtain high capacity comb signal at the through and drop port, respectively. Our system can tune the rate and pulse width by driving signal or the ring parameter. In application, the proposed scheme can be recognized as a simple flexible and more stable for apply in advance circuit system. © 2012 IEEE.
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    Public key suppression and recovery using a PANDA ring resonator for high security communication
    (2011-03-01)
    Juleang, Pakorn
    ;
    Phongsanam, Prapas
    ;
    Mitatha, Somsak
    ;
    Yupapin, Preecha P.
    An interesting security technique that uses the dark-bright soliton conversion control within the microring resonator is proposed. The obtained outputs for a dark-bright soliton dynamic state can be controlled and used to form the public key suppression for communication security application. However, a good design should be possible to be fabricated; therefore, by using the parameters based on the practical device parameters, the simulation results obtained have shown that the proposed system can indeed be achieved. The public key suppression and public key recovery can be used in a highly secure communication system and has potential applications in optical cryptography. © 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).