Throughput Maximisation in Ultra-wideband Hybrid-amplified Links

A semi-analytical, real-time nonlinear-interference model including ASE noise in hybrid-amplified links is introduced. Combined with particle-swarm optimisation, the capacity of a hybrid-amplified 10.5 THz 117x57 km link was maximised, increasing throughput by 12% versus an EDFAs-only configuration

A Closed-form Expression for the ISRS GN Model Supporting Distributed Raman Amplification

A closed-form model for the nonlinear interference in distributed Raman amplified links is presented, the formula accounts for both forward and backward pumping. The model accurately estimates the received SNR over a 10 THz bandwidth

Multi-band Transmission over E-, S-, C- and L-band with a Hybrid Raman Amplifier

Capacity enhancement by utilising the unused spectral bands of the low-loss optical window of standard single-mode fibre (SSMF) is a cost-effective solution for meeting the future demand of data traffic. The development of optical amplifiers that can operate in different spectral bands is expected to play an integral part in the establishment of multi-band networks. In this work, we perform experimental, analytical and numerical modelling of a multi-band transmission system using a hybrid distributed-discrete Raman amplifier enabling signal amplification from 1410-1605 nm. The developed amplifier was tested over 50km of SSMF using 200 Gbit/s channels, where successful transmission was achieved, well above the HD-FEC threshold of 8.5 dB. Further study on the multi-band transmission performance was carried out using a semi-analytical closed-form approximation and split-step Fourier method-based simulations for various related test cases. The analytical and numerical models are also compared with experimental results, showing reasonable agreement in terms of system performance estimation

Multi-band Transmission over E-, S-, C- and L-band with a Hybrid Raman Amplifier

Capacity enhancement by utilising the unused spectral bands of the low-loss optical window of standard single-mode fibre (SSMF) is a cost-effective solution for meeting the future demand of data traffic. The development of optical amplifiers that can operate in different spectral bands is expected to play an integral part in the establishment of multi-band networks. In this work, we perform experimental, analytical and numerical modelling of a multi-band transmission system using a hybrid distributed-discrete Raman amplifier enabling signal amplification from 1410-1605 nm. The developed amplifier was tested over 50km of SSMF using 200 Gbit/s channels, where successful transmission was achieved, well above the HD-FEC threshold of 8.5 dB. Further study on the multi-band transmission performance was carried out using a semi-analytical closed-form approximation and split-step Fourier method-based simulations for various related test cases. The analytical and numerical models are also compared with experimental results, showing reasonable agreement in terms of system performance estimation

Data to reproduce the figures from the paper "Ultra-wideband Modelling of Optical Fibre Nonlinearity in Hybrid-amplified Links"

This data provides the data points of Figures from the paper "Ultra-wideband Modelling of Optical FibreNonlinearity in Hybrid-amplified Links", submitted to the Journal of Lightwave Technology (JLT).Each figure is in separate folders. For each figure, you will find the corresponding TXT file used to plot the data of the figures in the paper. The TXT files are made of columns, where each column represents one of the curves in the graphs. The titles of each column are self-explanatory so you can easily relate the column with the graphs in the paper.</p

Evolving Optical Core Networks: Understanding the Impact of Topology Redesign using Space and Wavelength Domains on Network Throughput

In this work, the benefits of network re-design with spatial division multiplexing (SDM) and ultra-wideband (UWB) are investigated. For the first time a comprehensive study of 200 generated topologies and optimal routings show throughput-cost trade-off of re-designing networks with UWB and SDM

Analytical modelling of system impairments in ultrawideband transmission context

Analytical models for the estimation of nonlinearity-caused impairments enable effective maximisation of total data throughput. We demonstrate a 3 times improvement in per-channel mutual information when data is redistributed from the L-band to the S-band