Dual-pump Raman amplification with increased flatness using modulation instability

T.J. Ellingham, J.D. Ania-Castañón, S.K. Turitsyn, A. Pustovskikh, S. Kobtsev, M.P. Fedoruk

Research output: Contribution to journalArticlepeer-review


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. © 2005 Optical Society of America.

Original languageEnglish
Pages (from-to)1079-1084
Number of pages6
JournalOptics Express
Issue number4
Publication statusPublished - 21 Feb 2005

Bibliographical note

© 2005 OSA
This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OPEX.13.001079. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.


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