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.
© 2014 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: July 4, 2014
Revised Manuscript: July 15, 2014
Manuscript Accepted: July 15, 2014
Published: August 14, 2014
Sidsel R. Petersen, Thomas T. Alkeskjold, Christina B. Olausson, and Jesper Lægsgaard, "Extended parametric gain range in photonic crystal fibers with strongly frequency-dependent field distributions," Opt. Lett. 39, 4891-4894 (2014)