Long period fiber gratings for the mitigation of parasitic laser effects in mid-infrared fiber amplifiers

A concept to mitigate parasitic lasing in mid-IR fiber amplifiers using a single long period fiber grating is shown. Using tightly confined ultrashort laser pulses at 800 nm, a grating was directly inscribed into the core of an erbium doped fluoride glass fiber showing a strong attenuation down to ...

Source: Optics Express - July 16, 2019 Category: Physics Authors: Maximilian Heck Jean-Christophe Gauthier Andreas T ü nnermann R é al Vall é e Stefan Nolte Martin Bernier Source Type: research