Triple wavelength pumped silica-fibre Ramanamplifiers with 114 nm bandwidth

The authors demonstrate silica-fibre Raman amplifiers with gain bandwidths of up to 114 nm and peak small-signal gains of up to 41.5 dB. Cascaded Raman fibre lasers operating at wavelengths of 1423, 1455 and 1480 nm have been used to simultaneously pump these amplifiers.