title: Extended parametric gain range in photonic crystal fibers with strongly frequency-dependent field distributions.
abstract: The parametric gain range of a degenerate four-wave mixing process is determined in the undepleted pump regime. The gain range is considered with and without taking the mode field distributions of the four-wave mixing components into account. It is found that the mode field distributions have to be included to evaluate the parametric gain correctly in dispersion-tailored speciality fibers and that mode profile engineering can provide a way to increase the parametric gain range.
authors.forename: Sidsel R
authors.initials: SR
authors.lastname: Petersen
authors.forename: Thomas T
authors.initials: TT
authors.lastname: Alkeskjold
authors.forename: Christina B
authors.initials: CB
authors.lastname: Olausson
authors.forename: Jesper
authors.initials: J
authors.lastname: Lægsgaard