Progress of Single Mode Propagation Technology in Large Mode Area Fiber

Abstract

Due to nonlinear effects and optical damage which limit the power promotion of fiber lasers, large mode area fiber with single mode propagation has aroused wide public interest over recent years. The latest progress of single mode output technology in large mode area fiber is introduced from three aspects including fiber modes filtering, structure design and modes conversion. The development trends of high power fiber lasers are also prospected by comparing these methods.