S-shaped S-band multi-wavelength Brillouin Raman Fiber Laser employing Raman amplifier

The simulation demonstrated an S-shaped multi-wavelength Brillouin-Raman Fiber Laser employing Raman amplifier in the cavity. Raman amplifier- average power model is employed for signals amplification. This configuration is operated in the S-band wavelength region with tuning range between 1460 nm to 1530 nm. A laser signal at 1500 nm with 4 dBm of output power act as the Brillouin pump, while at output power of 90 mW with 1425 nm of wavelength act as the Raman pump. As a result, at 10 km of single mode fiber and output coupling ratio of 90%, 7 outputs of Brillouin Stokes signals are obtained with maximum output power of 33.88 dBm. Meanwhile, maximum gain values at 38. 07 dBm is recorded at 90 mW of injected Raman pump power. It is notable that the Raman gain broadening occurs around 1500 nm to 1530 nm in S-band wavelength region.