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Author: search.filters.author.Mitatha, SomsakSubject: search.filters.subject.communication security

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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).
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    Dark-soliton multiplexing system for high-capacity and -security communication within a wavelength router
    (2010-05-01)
    Vongchumyen, Charoen
    ;
    Kulsirirat, Kathawut
    ;
    Mitatha, Somsak
    ;
    Yupapin, Preecha P.
    We propose a novel system for generating multiplexed dark-soliton pulses using multiple light sources via an optical multiplexer, whereby dark solitons with different center wavelengths can be generated. The multiplexed signals can be transmitted into the communication link and filtered by using an optical add-drop filter. By using suitable simulation parameters, we have shown that dark solitons with different center wavelengths can in fact be obtained. In application, the communication capacity can be increased by using the multiplexed dark solitons; moreover, the transmission signals can be secured by utilizing the behavior of dark solitons. A free spectrum range (FSR) 2.5 nm and an amplified power of 30 W of dark solitons with wavelength 1.60 μm can be achieved. Channel spacing of the communication signals within a wavelength router can be provided by using a suitable FSR, which can be managed by using crosstalk effect analysis. © 2010 Society of Photo-Optical Instrumentation.