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Subject: search.filters.subject.Dark-bright soliton conversion

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    All optical half adder/subtractor using dark-bright soliton conversion control
    (2011-05-02)
    Thongmee, Sappasit
    ;
    Yupapin, Preecha P.
    We propose a new design of all-optical circuit using microring and nanoring devices, in which the simultaneous operation of half adder/subtractor arithmetic can be formed by using dark-bright soliton conversion control within the system. The input logic "0" and "1" are performed by using dark and bright soliton pulses, respectively. By using the dark-bright soliton conversion behavior with in the π/2 phase shift device, the arithmetic unit can perform simultaneously at the drop and though port, respectively. In application, the proposed scheme is simple and flexible for performing the logic switching system, which can be used for advanced logical system.
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    A novel system of the simultaneous trapping of dark-bright solitons within a nano-waveguide system
    (2010-10-01)
    Pornsuwancharoen, N.
    ;
    Fujii, Y.
    ;
    Srinuanjan, K.
    ;
    Yupapin, P. P.
    We propose a novel system of a nano-waveguide that can be used to generate the continuous spectrum, i.e. white light. The simultaneous trapping and generation of short and millimeter waves can also be performed by using either bright or dark soliton. A system consists of two micro- and a nano-ring resonators that can be integrated into a single system. The large bandwidth is generated by a soliton pulse within a Kerr-type nonlinear medium where the continuous bandwidth or wavelength can be performed. The simultaneous dark-bright solitons conversion is performed and achieved. Results obtained have shown the potential of using the technique for continuing light spectra generation, where the filtering signals are allowed by using the suitable device parameters. The advantage is that the large bandwidth separation of the short and sub-millimeter waves can be obtained, which is allowed to form the simultaneous generation of short and millimeter waves within a single system. Further, light pulse can be trapped within a nano-waveguide, which is available to form the memory device. © 2009 Elsevier GmbH. All rights reserved.