Multi-wavelength fiber laser based on highly erbium-doped fiber and nonlinear effects in SMF

摘要

In this paper, a kind of multi-wavelength fiber laser based on highly erbium-doped fiber (HEDF) is introduced. A new type of HEDF is used as the gain medium and four-wave Mixing (FWM) in single mode fiber(SMF) is used to suppress mode competition of the laser. And then, a nonlinear optical fiber loop mirror(NOLM) is added to ring cavity to optimize the experimental structure. The flatness of the output spectrum and side mode suppression ratio(SMSR) are studied. M last, the stability of the experimental system is analyzed by taking two peak light waves near the center wavelength as an example.