We experimentally demonstrate and simulate a novel technique employing pump polarisation to improve/flatten a one-pump FOPA gain spectrum by as much as 2 dB from peak and to enable ultraflat (<0.5 dB gain variation) operation over >100 nm gain bandwidth.
Gordienko, V., Stephens, M. F., Ferreira, F., & Doran, N. J. (2018). Gain Spectrum Shaping Technique for One-Pump Fibre Optical Parametric Amplifier (FOPA). In 2017 European Conference on Optical Communication (ECOC) IEEE. https://doi.org/10.1109/ECOC.2017.8345891