Amplification at 1.3 μm in a Pr ³⁺ -doped single-mode fluorozirconate fibre

Abstract

Gain of 10.5 dB has been achieved at a wavelength of 1.3 μm, by using a 17 m length of single mode fluorozirconate fibre doped with 560 ppmw Pr3+, and pumped at 1.007 μm. The gain increased almost linearly with launched pump power, with a slope efficiency of 0.019 dB/m W.