title: Dual-pump Raman amplification with increased flatness using modulation instability.
abstract: The application of modulation instability-initiated nonlinear broadening of two CW pumps at different wavelengths, in order to achieve superior gain ripple performance in broadband Raman amplifiers, is demonstrated for the first time experimentally. A particular example using Truewave and LEAF fibers is offered, in which the 0.1 dB gain ripple band is extended from 5 nm to 19 nm. Experimental results are in a good agreement with numerical modeling. Guidelines for optimal broadening are discussed.
authors.forename: T
authors.initials: T
authors.lastname: Ellingham
authors.forename: J
authors.initials: J
authors.lastname: Ania-Castañón
authors.forename: S
authors.initials: S
authors.lastname: Turitsyn
authors.forename: A
authors.initials: A
authors.lastname: Pustovskikh
authors.forename: S
authors.initials: S
authors.lastname: Kobtsev
authors.forename: M
authors.initials: M
authors.lastname: Fedoruk