Title :
Modeling of Loss-Induced Superluminal and Negative Group Velocity in Two-Port Ring-Resonator Circuits
Author :
Uranus, H.P. ; Hoekstra, H.J.W.M.
Author_Institution :
Univ. of Twente, Enschede
Abstract :
The group velocity vg of light in two-port ring- resonator (TPRR) circuits with loss is theoretically studied. We point out four possible operation regimes, i.e., "slow" light with positive vg, "slow" light with negative vg, "fast" light with negative vg, and "fast" light with positive vg, where "slow" means |vg| < c and "fast" means |vg| > 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 vg for sensing applications are also discussed.
Keywords :
optical losses; optical resonators; optical sensors; optical waveguides; loss-induced superluminal group velocity; negative group velocity; optical sensor; optical waveguides; temporal behavior; two-port ring-resonator circuits; Coupling circuits; Crystalline materials; Fiber nonlinear optics; Lighting control; Nonlinear optics; Optical fiber dispersion; Optical materials; Optical pulse generation; Optical ring resonators; Optical sensors; Fast light; negative group velocity; ring resonator; sensor; slow light; superluminal group velocity;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2007.901524
