150-Channel Four Wave Mixing Based Multiwavelength Brillouin-Erbium Doped Fiber Laser

Abstract

A wide band tunable multiwavelength Brillouin-erbium fiber laser (BEFL)is developed. In this structure, the laser is formed between a doublepass amplification box and a highly nonlinear fiber (HNLF), whichacts as a virtual mirror, results in removing the reflective physicalmirror from one side of the laser structure. A large number of Stokesand anti-Stokes lines are generated through cascading stimulatedBrillouin scattering and inducing four wave mixing process insidethe HNLF. Due to optimizing Brillouin and erbium doped fiber (EDF)pump powers, the Rayleigh back scattering is efficiently suppressed,and the generated BEFL wavelengths are free from self lasing cavitymodes over a wide tuning range. At EDF pump power and Brillouin pumppower of 100 mW and 3 dBm, respectively, up to 150 Stokes lines withwavelength spacing of 0.076 nm, and a tuning range of 40 nm wereachieved