Raman amplification: An enabling technology for long-haul coherent transmission systems

WS Pelouch - Journal of Lightwave Technology, 2015 - ieeexplore.ieee.org
Raman amplification has been commercially utilized in optical transmission systems for
more than a decade. The drive toward higher spectral density has increased the interest in …

Pump RIN-induced impairments in unrepeatered transmission systems using distributed Raman amplifier

J Cheng, M Tang, APT Lau, C Lu, L Wang, Z Dong… - Optics …, 2015 - opg.optica.org
High spectral efficiency modulation format based unrepeatered transmission systems using
distributed Raman amplifier (DRA) have attracted much attention recently. To enhance the …

Experimental verification of relative phase noise in Raman amplified coherent optical communication system

L Xu, J Cheng, M Tang, J Wu, S Fu… - Journal of Lightwave …, 2016 - ieeexplore.ieee.org
The intensity fluctuation of a Raman pump laser source will not only transfer to the signal's
intensity through stimulated Raman scattering effect, which has been investigated …

Characterization and optimization of unrepeatered coherent transmission systems using DRA and ROPA

J Cheng, M Tang, S Fu, PP Shum… - Journal of Lightwave …, 2017 - ieeexplore.ieee.org
We present a detailed investigation of the singe-channel 100G polarization-multiplexed
quadrature-phase-shift-keying-based unrepeatered coherent transmissions using various …

G. 654. E optical fibers for high-data-rate terrestrial transmission systems with long reach

JD Downie, S Makovejs, J Hurley… - … , Sub-Systems, and …, 2018 - spiedigitallibrary.org
Data traffic demands continue to increase worldwide, driving requirements for higher
spectral efficiency systems and higher individual channel capacities. To enable terrestrial …

System Performance Analysis of Distributed Raman Amplification With Dual-Order Forward Pumping

A Dutta, Y Akasaka, R Hui - Journal of Lightwave Technology, 2024 - ieeexplore.ieee.org
Performance of distributed Raman amplification (DRA) system with dual order forward (FW)
pumping is analyzed with the consideration of both pump relative intensity noise (RIN) to …

RIN induced penalties in G. 654. E and G. 652. D based distributed Raman amplifiers for coherent transmission systems

P Hazarika, M Tan, MA Iqbal, L Krzczanowicz, AA Ali… - Optics …, 2021 - opg.optica.org
Relative intensity noise (RIN) induced penalties were experimentally measured in
distributed Raman amplifiers (DRAs) for G. 654. E and G. 652. D fibres with forward …

Examination of potential terrestrial system effects from raman pumps below cable cutoff in G. 654. E fibers

M Mlejnek, JD Downie, M O'Sullivan - Journal of Lightwave …, 2019 - opg.optica.org
ITU G. 654. E was recently approved as a new optical fiber standard for terrestrial systems.
While G. 654-compliant fibers have been used extensively in undersea submarine networks …

Pump RIN to Carrier Phase Noise Transfer in Distributed Fiber Raman System Evaluated through Carrier FM Noise Spectrum

R Hui, A Dutta, Y Akasaka - 2023 23rd International Conference …, 2023 - ieeexplore.ieee.org
Relative intensity noise (RIN) of pump lasers can be transferred to both RIN and phase
noise of the optical signal in fiber systems with distributed Raman amplification (DRA). In …

Analysis of potential terrestrial system effects from raman pumps below cable cut-off in G. 654. E fibres

M Mlejnek, JD Downie… - … European Conference on …, 2017 - ieeexplore.ieee.org
The new G. 654. E fibre standard moves the cable cut-off specification to 1530 nm. We
analyse potential signal impairments that may arise from Raman amplification with pump …