title: Spectral interference of frequency-shifted solitons in a photonic-crystal fiber.
abstract: Frequency-shifted solitons in a highly nonlinear photonic-crystal fiber (PCF) are shown to give rise to high-visibility interference fringes in PCF output spectra, indicating flat spectral phase profiles of individual solitons in the PCF output. This experimental finding, supported by numerical simulations, suggests a promising method of fiber-format pulse shaping and an attractive technology for few-cycle pulse synthesis through a coherent addition of frequency-shifted solitons generated in a highly nonlinear fiber.
authors.affiliation: Physics Department, M.V. Lomonosov Moscow State University, Vorob'evy gory, Moscow, Russia.
authors.forename: A A
authors.initials: AA
authors.lastname: Voronin
authors.forename: I V
authors.initials: IV
authors.lastname: Fedotov
authors.forename: A B
authors.initials: AB
authors.lastname: Fedotov
authors.forename: A M
authors.initials: AM
authors.lastname: Zheltikov