Vongchumyen, Charoen

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Vongchumyen, Charoen
Alternative Name
Vongchumyen, C.
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charoen.vo@kmitl.ac.th

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    Item type:Publication,
    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.
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    Dark soliton array generation: Theory and experiment
    (2010-11-01)
    Vongchumyen, C.
    ;
    Mitatha, S.
    ;
    Ali, J.
    ;
    Yupapin, P. P.
    We present the fascinating results of dark soliton pulse array generation using the multilight sources via an optical multiplexer. The dark soliton array with different center wavelengths can be generated. The experimental setup was operated by using the brillouin-enhanced fiber laser scheme, whereas the experimental results of the dark soliton array are generated and achieved. In application, the dark soliton array can be used to form the molecules/atom trapping array, which can be used to form the molecules/atoms memory array for molecular computer and communication. Moreover, the transmission molecules/atoms can be secured by using the dark-bright soliton conversion behaviors. Results obtained have shown that the free spectrum range and the amplified power of 2.1 nm and 20 W of the bright soliton after dark-bright soliton conversion with wavelength center at 1.50 μm can be achieved, respectively. © 2010 Wiley Periodicals, Inc.
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    An atom/molecule/DNA probing and transportation using dynamic optical tweezers via a wavelength router
    (2011-03-01)
    Vongchumyen, C.
    ;
    Tasakorn, M.
    ;
    Mitatha, S.
    ;
    Yupapin, P. P.
    A dark soliton pulse beam that has potential applications in the probing and transport of atoms or molecules as an optical tweezers is demonstrated. The trapped pulse beam is formed in the gap between a BP signal at 1500.00 nm and Stokes signal at 1500.09 nm, which has peak powers of -12 dBm. The generated beam is seen to be stable with no fluctuations over a test period of 10 min, which is important to ensure that the transported atom/molecule is not lost in the link media, therefore, the dynamic optical tweezers are now plausible. The theoretical background of the trapped atom/molecule is also analyzed and described in details. The atomic/molecular network via a wavelength router is also described. © 2010 Elsevier GmbH All rights reserved.