Bi2O3-based erbium doped fiber for short pulse amplification

We have developed boron co-doped Bi2O3-based erbium doped fiber and double core fiber to improve power conversion efficiency at 980 nm pumping and to enhance confinement factor. We show the demonstration of short pulse amplification using Bi2O3-based Erbium doped double core fiber and compared with silica-based EDF. The short length of Bi2O3-based EDF with highly confinement factor shows highly nonlinear tolerance and superior short pulse amplification performances.