Time-wavelength-mode equalization by PSO for random fiber laser based FMF Raman amplifier

We report an FMF Raman amplifier based on random fiber laser with optimized time-wavelength-mode equalization by PSO method, achieving 1.3-dB spectral gain flatness, 2.3-dB temporal SPV, and 0.03-dB MDG with 15-dB on-off gain.