High efficiency supercontinuum generation using ultra-long Raman fiber cavities

Atalla E. El-Taher, Juan D. Ania-Castañón, Vassilis Karalekas, Paul Harper

Research output: Contribution to journalArticlepeer-review


Supercontinuum generation in a multi-fiber ultra-long Raman fiber laser cavity is experimentally investigated for the first time. We demonstrate significantly enhanced spectral flatness and supercontinuum generation efficiency using only conventional single mode silica fiber. With a pump power of only 1.63W a ~15dB bandwidth >260 nm wide (from 1440 to >1700nm) supercontinuum source is reported with a flatness of <1dB over 180nm using an optimised hybrid TW/HNLF cavity. We address the dependence of the supercontinuum spectrum on the input pump power and ultra-long Raman cavity.
Original languageEnglish
Pages (from-to)17909-17915
Number of pages7
JournalOptics Express
Issue number20
Publication statusPublished - 22 Sept 2009

Bibliographical note

© 2009 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://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-20-17909. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. Also a conference paper at the European Conference and Exhibiton on Optical Communication (ECOC) 2008, Brussels, Belgium


  • photonics
  • ultra-long Raman fiber cavities


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