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

Gordienko, V., Stephens, M.F.C., El-Taher, A.E. and Doran, N.J. (2017). Ultra-flat wideband single-pump Raman-enhanced parametric amplification. Optics Express, 25 (5), pp. 4810-4818.

Abstract

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.

Publication DOI: https://doi.org/10.1364/OE.25.004810
Dataset DOI: https://doi.org/10.17036/researchdata.aston.ac.uk.00000171
Divisions: Engineering & Applied Sciences > Electrical, electronic & power engineering
Engineering & Applied Sciences > Institute of Photonics
Additional Information: 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.
Uncontrolled Keywords: nonlinear optics and devices,parametric amplification,Atomic and Molecular Physics, and Optics
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Related URLs: http://www.scopus.com/inward/record.url?scp=85014511588&partnerID=8YFLogxK (Scopus URL)
Published Date: 2017-03-06
Authors: Gordienko, V.
Stephens, M.F.C. ( 0000-0002-6533-1893)
El-Taher, A.E.
Doran, N.J.

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