Peer-Reviewed Journal Details
Mandatory Fields
Frascella, P. and Antony, C. and Fabbri, S.J. and Gunning, F.C.G. and Gunning, P. and McAuliffe, W. and Cassidy, D. and Ellis, A.D.
IEEE Photonics Technology Letters
Impact of Raman Amplification on a 2-Tb/s Coherent WDM System
Optional Fields
OFDM Raman amplification installed link capacity limits
The impact of hybrid erbium-doped fiber amplifier
(EDFA)/Raman amplification on a spectrally efficient
coherent-wavelength-division-multiplexed (CoWDM) optical
communication system is experimentally studied and modeled.
Simulations suggested that 23-dB Raman gain over an unrepeatered span of 124 km single-mode fiber would allow a decrease of the mean input power of 6 dB for a fixed bit-error rate (BER). Experimentally we demonstrated 1.2-dB -factor improvement for a 2-Tb/s seven-band CoWDM with backward Raman amplification. The system delivered an optical signal-to-noise ratio of 35 dB at the output of the receiver preamplifier providing a worst-case BER of over 49 subcarriers at 42.8 Gbaud,
leaving a system margin (in terms of -factor) of 4 dB fromthe
forward-error correction threshold.
Grant Details