TY  - INPR
AV  - public
Y1  - 2019/08/05/
TI  - Study on the Impact of Nonlinearity and Noise on the Performance of High-Capacity Broadband Hybrid Raman-EDFA Amplified System
N1  - This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions.
UR  - https://doi.org/10.1109/jlt.2019.2933246
PB  - Institute of Electrical and Electronics Engineers (IEEE)
SN  - 1558-2213
N2  - We experimentally demonstrated the transmission of 312 × 35 GBd DP-256QAM over 9 × 70 km spans using hybrid distributed Raman-EDFA (HRE) amplifiers with a continuous 91 nm gain bandwidth. A total throughput of 120 Tbit/s over 630 km is demonstrated, with a net achievable information rate after SD-FEC of 10.99 bit/symbol. We further perform an exten- sive, theoretical assessment of the noise contributions originating from amplifier, transceiver sub-system and fiber nonlinearity using the Gaussian noise model in the presence of inter-channel stimulated Raman scattering (ISRS GN model). The ISRS GN model accounts for arbitrary, wavelength dependent signal power profiles along fiber spans, which is vital for the modeling of ultra- wideband transmission, particularly for hybrid Raman-amplified links. It is found that, due to the low noise HRE amplifier and a transmission distance of 630 km, the noise originating from the transceiver sub-system imposed a penalty of 5 dB in SNR. The transceiver noise is, therefore, the major performance bottleneck and the main limitation of the system throughput.
ID  - discovery10080645
A1  - Galdino, L
A1  - Semrau, D
A1  - Ionescu, M
A1  - Edwards, A
A1  - Pelouch, WS
A1  - Desbruslais, SR
A1  - James, J
A1  - Sillekens, E
A1  - Lavery, D
A1  - Barnes, S
A1  - Killey, RI
A1  - Bayvel, P
KW  - Bandwidth
KW  -  Signal to noise ratio
KW  -  Throughput
KW  -  Optical noise
KW  -  Gain
KW  -  Transceivers
KW  -  Modulation
KW  -  Hybrid Raman-EDFA amplifier
KW  -  broadband transmission system
KW  -  high order modulation format
KW  -  adaptive rate LDPC decoder
JF  - Journal of Lightwave Technology
ER  -