Proposal of a small self-holding 2×2 optical switch using phase-change material

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    29 Citations (Scopus)


    A small and fast self-holding 2×2 optical switch using phase change material is proposed. This switch is based on a directional coupler in which a short waveguide made of a phase-change material (PCM) is sandwiched between two Si waveguides. The characteristics of the proposed switch were simulated by a beam propagation method (BPM). This switch can be as small as 3μm × 21 μm because the change in the refractive index of PCMs between the crystalline and amorphous states is very large; in addition, by utilizing the self-holding characteristics, it has the potential for low power consumption. The loss and the crosstalk were calculated to be 2.5 dB and -20.4dB in the bar state and 1.3 dB and -14.3 dB in the cross state, respectively.

    Original languageEnglish
    Pages (from-to)442-445
    Number of pages4
    JournalIEICE Electronics Express
    Issue number12
    Publication statusPublished - 2008 Jun 25


    • Optical switch
    • Optical waveguide
    • Phase change material

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Electrical and Electronic Engineering

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