11.2 dB SBS gain suppression in a large mode area Yb-doped optical fiber

Abstract

11.2 dB suppression of stimulated Brillouin scattering (SBS) in an Yb-doped, Al/Ge co-doped large mode area (LMA) gain fiber is demonstrated with a ramp-like acoustic index profile exhibiting an acoustic index contrast of 0.09 and acoustic index slope of 0.01/μm.