A Closed-Form Expression for the Gaussian Noise Model in the Presence of Raman Amplification
A Closed-Form Expression for the Gaussian Noise Model in the Presence of Raman Amplification
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DOI：
10.1109/jlt.2023.3315127
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发表时间：
2023-04
影响因子：
4.7
通讯作者：
H. Buglia;M. Jarmolovičius;L. Galdino;R. Killey;P. Bayvel
中科院分区：
文献类型：
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作者：
H. Buglia;M. Jarmolovičius;L. Galdino;R. Killey;P. Bayvel
提出了拉曼放大链路中非线性干扰（NLI）的封闭模型，该公式考虑了前向（FW）和后向（BW）泵浦方案以及通道间受激拉曼散射（ISRS）效应。该公式还考虑了任意数量的泵浦、波长相关的光纤参数、发射功率分布，并在分布式拉曼放大系统设置上进行了测试。该公式适用于超宽带 (UWB) 光传输系统，适用于 13 THz 光带宽的信号，对应于 S、C 和 L 频段上的传输。通过与点对点传输链路中高斯噪声（GN）模型的数值积分和分步傅里叶方法（SSFM）模拟的比较，验证了封闭式公式的准确性。
A closed-form model for the nonlinear interference (NLI) in Raman amplified links is presented, the formula accounts for both forward (FW) and backward (BW) pumping schemes and inter-channel stimulated Raman scattering (ISRS) effect. The formula also accounts for an arbitrary number of pumps, wavelength-dependent fibre parameters, launch-power profiles, and is tested over a distributed Raman-amplified system setup. The formula is suitable for ultra-wideband (UWB) optical transmission systems and is applied in a signal with 13 THz optical bandwidth corresponding to transmission over the S-, C-, and L- band. The accuracy of the closed-form formula is validated through comparison with numerical integration of the Gaussian noise (GN) model and split-step Fourier method (SSFM) simulations in a point-to-point transmission link.