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    Item type:Publication,
    The analysis of IRBUS channel allocation for decrease four-wave mixing in DWDM system
    (2013-09-18)
    Jumpates, Ashira
    ;
    Srinuan, Chollatee
    ;
    Noppanakeepong, Suthichai
    ;
    Rachnarong, Vissavavit
    ;
    Injoungjirakit, Nainapas
    This paper presents a new model of optical channel allocation named "IRBUS" for improving the operation of a DWDM light source multiplexing by not have to use an optical filter in the DWDM de-multiplexer device. By our method can reduce transmission loss in case of the number of channels are plentiful and each of the channels is nearby that be found in Dense Wavelength Division Multiplexing (DWDM) Systems. The transmission loss is called "Four-Wave Mixing (FWM)" caused by the nonlinearity of the optical fiber signal. The results of numerical computation shown that the IRBUS model can decrease average FWM efficiency from -12.03dBm to -28.27dBm indicated that the remains FWM value are less than other methods and can also reduce the BER probabilities from - 5dBm to -19.75 dBm. © 2013 SPIE.
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    The analysis of paired unequally spaced reapeated alternate unequally spaced allocation channels for FDM lightwave system
    (2011-12-01)
    Jumpates, Ashira
    ;
    Rachnarong, Vissavavit
    ;
    Noppanakeepong, Suthichai
    This paper proposes the new technique to improve the conventional techniques in the channel allocations, in order to reduce transmission loss, in case of there are a large number of channel and each of channel is nearby. We have found this case in Dense Wavelength Division Multiplexing (DWDM) that is the cause of transmission loss called Four-Wave Mixing due to the fiber nonlinear. The channel allocations that used to resolve this problem are Equally Spaced (ES), Unequally Spaced (US), Repeated Alternate US (RAUS). This paper present the new technique to arrange the channel allocation in called paired URAUS to avoid the four-wave mixing. From the simulation results, the new proposed technique has lower the effect of Four-Wave Mixing than the conventional techniques and decrease bit error probabilities and bandwidth, containing higher channels, in DWDM transmission systems.
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