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Author: search.filters.author.Mitatha, SomsakSubject: search.filters.subject.PANDA ring resonator

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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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    High-capacity terahertz carrier generation using a modified add-drop filter for radio frequency identification
    (2012-08-01)
    Luangxaysana, Khanthanou
    ;
    Mitatha, Somsak
    ;
    Yoshida, Masahiro
    ;
    Komine, Noriyuki
    ;
    Yupapin, Preecha
    A new technique of terahertz (THz) frequency carrier generation for multi-channel radio frequency identification (RFID) use is proposed. The dense wavelength division multiplexing signals can be obtained by using a Gaussian pulse propagating within a modified add-drop filter known as a PANDA ring resonator. The THz device system can be made contributions to the promising applications, especially in highspeed switching, demultiplexing, and wavelength conversion of optical signals, in which the effect of THz control is also required and essential for the potential application to ultra-high speed wireless digital interconnects for computer chips with ultra-high clock rates. In principle, the high-density frequency (wavelength) can be generated and used to form the RFID; moreover, the tiny device system is another advantage, which can be constructed to incorporate the currently used system. The results obtained have shown that higher density and increasing channel capacity can be obtained and are useful for the large demand for RFID applications. © 2012 Society of Photo-Optical Instrumentation Engineers (SPIE).
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    Micro-optical gyroscope using a PANDA ring resonator
    (2012-06-20)
    Sa-Ngiamsak, Wisitsak
    ;
    Sirawattananon, Chaiwat
    ;
    Srinuanjan, Keerayoot
    ;
    Mitatha, Somsak
    ;
    Yupapin, Preecha P.
    We propose a new system of a micro-optical gyroscope (MOG) using a micro-embedded system. This system is comprised of a modified add/drop filter known as a PANDA ring resonator, which can be applied to navigate the direction with 3-D axes. The optical total path length of a MOG has been expanded by mean of an enhanced ring or PANDA ears. Simulation results obtained have shown that the precision signal at the phase difference of rotation orbit (straight line, ellipse, circle, etc.,) as a function of the inertial rotation rate Ω based on the Sagnac effect is achieved. The dependence of the transmission characteristics of the PANDA ring on the coupling coefficients of directional couplers is studied. The mathematical model of the system is analyzed and simulated. © 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).
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    Optical vortices generated by light pulses within a PANDA ring resonator
    (2011-01-01)
    Mitatha, Somsak
    ;
    Piyatamrong, Bunjong
    ;
    Yupapin, Preecha P.
    ;
    Knobnob, Boonying
    ;
    Chaiyasoonthorn, Sawatsakorn
    This paper proposes a new ring resonator device, in which a modified add/drop multiplexer incorporated with two nanoring resonators is modeled. Such a system is known as the PANDA ring resonator structure. By controlling the suitable input parameters and the control optical signals, the optical pulses are employed to form the gradient potentials, finally, the optical vortices (gradient optical fields/wells) are generated, which can be deployed in various applications. © 2011 World Scientific Publishing Company.