Optical SNR degradation due to stimulated Raman scattering in dual-band WDM transmission systems and its compensation by optical level management

Hoshida, Takeshi; Terahara, T.; Kumasako, J.; Onaka, H.

doi:10.1109/apcc.1999.824543

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Although bandwidth expansion can lead to higher data throughputs, several challenges arise in modelling UWB transmission. Among these challenges, the wavelength-dependent optical fibre parameters [5,6], together with the ISRS effect [7,8,9], play a significant role. In contrast to conventional C-band systems, they must be taken into account.…”

Section: Introductionmentioning

confidence: 99%

A Closed-Form Expression for the Gaussian Noise Model in the Presence of Inter-Channel Stimulated Raman Scattering Extended for Arbitrary Loss and Fibre Length

Buglia

Jarmolovicius

Vasylchenkova

et al. 2023

J. Lightwave Technol.

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A closed-form formula for the nonlinear interference (NLI) estimation using the Gaussian noise (GN) model in the presence of inter-channel stimulated Raman scattering (ISRS) is derived. The formula enables accurate estimation of the NLI evolution along any portion of the fibre span together with arbitrary values of optical fibre losses. The formula also accounts for wavelength-dependent fibre parameters, variable modulation formats and launch power profiles. The formula is suitable for ultra-wideband (UWB) optical transmission systems and its accuracy is assessed for a system with 20 THz optical bandwidth over the entire S-, C-, and L-band through comparison with numerical integration of the ISRS GN model and split-step Fourier method (SSFM) simulations in point-to-point transmission and inline NLI estimation scenarios.

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Section: Introductionmentioning

confidence: 99%

A Closed-Form Expression for the Gaussian Noise Model in the Presence of Inter-Channel Stimulated Raman Scattering Extended for Arbitrary Loss and Fibre Length

Buglia

Jarmolovicius

Vasylchenkova

et al. 2023

J. Lightwave Technol.

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“…The importance of launch power setting in UWB systems was initially discussed in the late 1990's [14][15][16]. However, recent development of fast and accurate models and algorithms have enabled its computation, including global optimisation algorithms such as evolutionary algorithms (EA) [17,18], particle swarm optimisation (PSO) [19], artificial neural network (ANN) [20] and faster but sub-optimal strategies [21].…”

Section: Introductionmentioning

confidence: 99%

On the impact of launch power optimization and transceiver noise on the performance of ultra-wideband transmission systems [Invited]

Galdino

Blugia

Sillekens

et al. 2022

J. Opt. Commun. Netw.

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Ultra-wideband transmission is a promising, cost-effective solution to meet the increasing demand for data traffic in optical fiber systems. However, system performance and quality of transmission (QoT) are limited by fiber nonlinearity, in particular, interchannel stimulated Raman scattering (ISRS), leading to a power transfer from short to long wavelengths. As the result, per-channel launch power optimization is required to maximize the system throughput. In this paper, we investigate how the transceiver noise and launch power optimization impact the total throughput and the per-channel QoT for transmission bandwidths of up to 20 THz, using the S-, C-, and L-bands. To measure the gains through the optimum launch power profile, a spectrally uniform launch power is used as a baseline. Through experimental analysis and theoretical modeling, the main limitations constraining the achieved data throughput of 178 Tb/s over a continuous bandwidth of 16.83 THz and 40 km were investigated. The impact of the launch power optimization and the transceiver constrained signal-to-noise ratio (SNR) are analyzed and compared, and the approaches to overcome data throughput limitations are considered. An extensive theoretical investigation for different system configurations is described, demonstrating the trade-off between ISRS impact and transceiver noise. The former degrades the QoT and increases the gains in performance obtained by optimizing the launch power, while the latter reduces these gains and the SNR variation across the bandwidth, with a major impact over short distances.

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128×10.66 Gbit/s transmission over 840 km standard SMF with 140 km optical repeater spacing (30.4 dB loss) employing dual-band distributed Raman amplification

Terahara

Hoshida

Kumasako

et al.

Optical Fiber Communication Conference. Technical Digest Postconference Edition. Trends in Optics and Photonics Vol.37 (IEEE Ca

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Optical SNR degradation due to stimulated Raman scattering in dual-band WDM transmission systems and its compensation by optical level management

Abstract: We investigated optical SNR penalty due to the Raman effects among WDM channels in dual-band repeated transmission, where 5.8 dB penalty is predicted after 64-WDM 500-km transmission over SMF. We propose penalty compensation technique and demonstrate its effectiveness.

Cited by 3 publications

References 2 publications

A Closed-Form Expression for the Gaussian Noise Model in the Presence of Inter-Channel Stimulated Raman Scattering Extended for Arbitrary Loss and Fibre Length

A Closed-Form Expression for the Gaussian Noise Model in the Presence of Inter-Channel Stimulated Raman Scattering Extended for Arbitrary Loss and Fibre Length

On the impact of launch power optimization and transceiver noise on the performance of ultra-wideband transmission systems [Invited]

128×10.66 Gbit/s transmission over 840 km standard SMF with 140 km optical repeater spacing (30.4 dB loss) employing dual-band distributed Raman amplification

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