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Gain enhancement in distributed erbium-doped fibre amplifier by Raman amplification of 1480 nm pump radiation

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3 Author(s)
Patrick, D.M. ; BT Labs., Ipswich, UK ; Spirit, D.M. ; Williams, D.L.

A 3 dB enhancement of the small-signal gain has been obtained at 1537 nm in a 12.7 km distributed erbium-doped fibre amplifier by Raman amplification of the 1480 nm pump. By copumping at 1319 nm, the 1480 nm erbium pump radiation was amplified by the 800 cm-1 Raman gain band of silica, which resulted in an increased erbium amplifier gain at the signal wavelength of 1537 nm.

Published in:

Electronics Letters  (Volume:28 ,  Issue: 13 )