Broadband and flat parametric gain with a single low-power pump in a multi-section fiber arrangement

We have theoretically investigated a new fibre optical parametric amplifier (OPA) architecture that provides a nearly flat gain over a 100 nm bandwidth without any gain-equalization filter. It consists in a multi-section in-line dispersion-tailored NLF arrangement and a single low-power pump which meets the current telecommunications requirements. Recent experiments haw shown that this kind of OPA´s would be potentially useful for telecommunications applications and the results presented here predict interesting enhanced performances.