Dynamics of frequency-modulated wave packets in optical guides with complex-valued material parameters
D.I. Sementsova aUl'yanovsk State University, ul. L. Tolstogo 42, Ulyanovsk, 432700, Russian Federation bScientific-Research Institute of Atomic Reactors, Dimitrovgrad, Ul'yanovsk Region, Russian Federation
Features of wave packet dynamics in linear and nonlinear optical fibers are studied allowing for complex-valued dispersion parameters. It is shown that the presence of imaginary components in dispersion parameters affects considerably the compression behavior of a wave packet in single-element and cascaded optical fibers; causes a shift in carrier frequency; and creates frequency-modulated wave packets with a superluminal envelope maximum.
PACS:42.25.Bs, 42.65.Re, 42.79.Gn (all) DOI:10.3367/UFNe.0183.201312e.1353 URL: https://ufn.ru/en/articles/2013/12/e/ Citation: Zolotovskii I O, Minvaliev R N, Sementsov D I "Dynamics of frequency-modulated wave packets in optical guides with complex-valued material parameters" Phys. Usp.56 1245–1256 (2013)