Back-seeding of higher order gain processes in picosecond supercontinuum generation
- 25 July 2008
- journal article
- Published by Optica Publishing Group in Optics Express
- Vol. 16 (16) , 11954-11968
- https://doi.org/10.1364/oe.16.011954
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.Keywords
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