Ultra-flat wideband single-pump Raman-enhanced parametric amplification

V. Gordienko*, M.F.C. Stephens, A.E. El-Taher, N.J. Doran

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We experimentally optimize a single pump fiber optical parametric amplifier in terms of gain spectral bandwidth and gain variation (GV). We find that optimal performance is achieved with the pump tuned to the zero-dispersion wavelength of dispersion stable highly nonlinear fiber (HNLF). We demonstrate further improvement of parametric gain bandwidth and GV by decreasing the HNLF length. We discover that Raman and parametric gain spectra produced by the same pump may be merged together to enhance overall gain bandwidth, while keeping GV low. Consequently, we report an ultra-flat gain of 9.6±0.5 dB over a range of 111 nm (12.8 THz) on one side of the pump. Additionally, we demonstrate amplification of a 60 Gbit/s QPSK signal tuned over a portion of the available bandwidth with OSNR penalty less than 1 dB for Q2 below 14 dB.
Original languageEnglish
Pages (from-to)4810-4818
Number of pages9
JournalOptics Express
Issue number5
Early online date22 Feb 2017
Publication statusPublished - 6 Mar 2017

Bibliographical note

Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

Funding: EPSRC) (EP/M005283/1, EP/J017582/1).

The experimental and theoretical data contained within this paper are available for
download at: http://doi.org/10.17036/researchdata.aston.ac.uk.00000171.


  • nonlinear optics and devices
  • parametric amplification


Dive into the research topics of 'Ultra-flat wideband single-pump Raman-enhanced parametric amplification'. Together they form a unique fingerprint.

Cite this