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  • 1-GHz All-Optical Flip-Flop...
    Seoung Hun Lee; Hae Won Jung; Kyong Hon Kim; Min Hee Lee; Byeung-Soo Yoo; Roh, Jay; Shore, K A

    IEEE photonics technology letters, 12/2010, Letnik: 22, Številka: 23
    Journal Article

    All-optical set-reset flip-flop operations of conventional circular cylindrical-shaped 1.55-μm wavelength single-mode vertical-cavity surface-emitting lasers (VCSELs) have been demonstrated at a switching frequency of 1 GHz based on polarization bistability observed via injection current variation. The energy of set and reset pulses was lower than 4.5 fJ at a bias current of the VCSEL of 4 mA. Polarization bistable VCSELs will be useful for high-speed optical signal processing applications.