Novel configuration of multiwavelength mode-locked fiber lasers using fiber Bragg gratings

Summary form only given. A novel configuration of multiwavelength operation of a mode-locked fiber laser using fiber Bragg gratings (FBGs) was successfully demonstrated. Compared with previous configurations, this scheme has the following advantages: (1) because the light components of all wavelengths selected by the FBGs travel the same route, the cavity lengths for those wavelengths are equal automatically; (2) only one cavity length stabilizing feedback system is needed to achieve stable output pulses; (3) multiple FBGs can be directly cascaded in the laser cavity to select the desired wavelengths.