A tunable hybrid Brillouin-Raman fiber laser system with simple structure is proposed. With a tunable ECL
laser whose power is 3dBm used as Brillouin pump, a fiber Raman laser whose maximum output is 1200 mW
used as Raman pump, and 25km DSF fiber used as both Brillouin and Raman gain media, an Brillouin-Raman
fiber laser with tunable range more than 40 (1530-1570 nm) nm was demonstrated. Multi-frequency Stokes
lines at an average of 10GHz frequency spacing was observed across the tuning range. When the wavelength of
Brillouin pump is in the range of 1550nm to 1565 nm, more than 10 stokes lines were observed. The Brillouin
fiber laser has the potential of simpler configuration, wider tunable range and more wavelengths when compared
with Brillouin-Erbium fiber laser.