title: Back-seeding of higher order gain processes in picosecond supercontinuum generation.
abstract: In photonic crystal fibers with closely spaced zero dispersion wavelengths it is possible to have two pairs of four-wave mixing (FWM) gain peaks. Here, we demonstrate both numerically and experimentally how the outer four-wave mixing gain peaks can be used to produce a strong amplification peak in a picosecond supercontinuum. The method involves feeding back part of the output light of a SC source and time matching it with the pump light. In this way it is possible to produce a gain of over 20 dB near the FWM gain wavelengths.
authors.affiliation: Koheras A/S, Blokken 84, DK-3460, Birkerød, Denmark. Peter.Moselund@fotonik.dtu.dk
authors.forename: Peter M
authors.initials: PM
authors.lastname: Moselund
authors.forename: Michael H
authors.initials: MH
authors.lastname: Frosz
authors.forename: Carsten L
authors.initials: CL
authors.lastname: Thomsen
authors.forename: Ole
authors.initials: O
authors.lastname: Bang
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D008027:Light; D008962:Models, Theoretical; D012542:Scattering, Radiation