Supercontinuum generation in a random fiber laser structure

摘要

A novel supercontinuum (SC) generation structure based on a random fiber laser is demonstrated in this paper. Theeffect of the passive fiber length for spectrum boarding is analyzed and discussed. A near-infrared SC with 20 dBbandwidth of more than 500 nm can be generated with 1 km length of passive fiber under11.13 W pump power. Theexperimental results show that shorter passive fiber length is beneficial for the SC broadening to long wavelength region.The long wavelength edge of the output SC with 200 m and 1930 m passive fiber are 1680 nm and 1375 nm respectivelywhen the pump power is 11.13W. The results proved that random fiber lasers can be a novel, simple, low cost, lowcoherence, and robust near-infrared SC generation source.