Modeling of Loss-induced Superluminal and Negative Group Velocity in Two-port Ring-resonator Circuits

H.P. Uranus, Hugo Hoekstra

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    The group velocity vg of light in two-port ringresonator (TPRR) circuits with loss is theoretically studied. We point out four possible operation regimes, i.e., “slow��? light with positive v_g, “slow��? light with negative v_g, “fast��? light with negative v_g, and “fast��? light with positive v_g, where “slow��? means |v_g| < c and “fast��? means |v_g| > c, with c denoting the velocity of light in vacuum. The temporal behavior of pulses passing through the TPRR for the four operation regimes and the potential of “slow��? light TPRR either with positive or negative v_g for sensing applications are also discussed.
    Original languageUndefined
    Article number10.1109/JLT.2007.901524
    Pages (from-to)2376-2384
    Number of pages9
    JournalJournal of lightwave technology
    Issue numberSupplement/9
    Publication statusPublished - Sep 2007


    • Fast light
    • Slow light
    • Sensor
    • IR-64511
    • superluminal group velocity
    • ring resonator
    • EWI-11515
    • METIS-245834
    • negative group velocity

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