A Generalized Raman Scattering Model for Real-Time SNR Estimation of Multi-Band Systems

被引:8
作者
Lasagni, Chiara [1 ,2 ]
Serena, Paolo [3 ,4 ]
Bononi, Alberto [3 ,4 ]
Antona, Jean-Christophe [5 ]
机构
[1] Univ Aquila, Dept Phys & Chem Sci, I-67100 Laquila, Italy
[2] CNIT Natl Lab Adv Opt Fibers Photon FIBERS, Laquila, Italy
[3] Univ Parma, Dept Engn & Architecture, I-43124 Parma, Italy
[4] CNIT Natl Lab Adv Opt Fibers Photon FIBERS, I-67100 Laquila, Italy
[5] Alcatel Submarine Networks, F-91620 Nozay, France
关键词
Stimulated Raman scattering (SRS); Gaussian noise (GN) model; multi-band; ultra-wide band; NONLINEAR INTERFERENCE; NOISE; APPROXIMATION; AMPLIFIERS;
D O I
10.1109/JLT.2023.3250751
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We investigate the impact of stimulated Raman scattering (SRS) in multi-band transmissions. We first derive and test against numerical results an extended Christodoulides-Zirngibl (ECZ) SRS model based on a triangular approximation of the Raman gain. Then, we exploit the ECZ SRS model in the context of the Gaussian noise (GN) model. We generalize some known closed-form expressions of the self- and cross-phase modulation variances, as well as the amplified spontaneous emission noise variance, over multi-band systems of bandwidth wider than the SRS bandwidth, i.e., beyond the C+L band. Finally, the proposed theoretical model is used to estimate the performance of multi-band systems in terms of signal-to-noise ratio (SNR) and achievable information rate (AIR).
引用
收藏
页码:3407 / 3416
页数:10
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