23 cm long Bi 2 O 3 -based EDFA for picosecond pulse amplification with 80 nm gain bandwidth

Abstract
Amplification of a 1 ps pulse train in a 22.7 cm Bismuth oxide (Bi2O3)-based erbium doped fibre amplifier (EDFA) is reported. An amplification bandwidth of 80 nm, from 1520 to 1600 nm is demonstrated. Because of the short length, amplification of picosecond pulses is achieved without pulse broadening over a wide wavelength range.