Transition from slow and frozen to superluminal and backward light through loss or gain in dispersion-engineered waveguides
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White, Thomas; Sukhorukov, Andrey
Description
We describe the generic effects of loss or gain on pulse propagation in photonic-crystal and plasmonic waveguides that support "frozen" or "in-band" slow light at dispersion inflection points in the absence of loss (or gain). Using an analytical perturbation theory, we find that propagating and evanescent modes hybridize when loss exceeds a certain threshold, resulting in a reduced attenuation rate and switching from slow to superluminal velocity. Numerical simulations for photonic-crystal...[Show more]
Collections | ANU Research Publications |
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Date published: | 2012 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/64089 |
Source: | Physical Review A: Atomic, Molecular and Optical Physics |
DOI: | 10.1103/PhysRevA.85.043819 |
Access Rights: | Open Access |
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01_White_Transition_from_slow_and_2012.pdf | 678.32 kB | Adobe PDF | ![]() |
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