Link-adaptive digital twin for robust physical-layer modeling in hybrid-amplified ultra-wideband optical networks
Accurate physical-layer modeling is increasingly essential for reliable ultra-wideband operation and capacity optimization, especially under the intensified inter-channel stimulated Raman scattering (ISRS) effect. This paper proposes the link-adaptive digital twin (LA-DT) for hybrid-amplified ultra-wideband links to overcome the generalization and speed limitations of existing methods, achieving accurate modeling and robust generalized signal-to-noise ratio (GSNR) estimation across diverse links. First, to address EDFA heterogeneity, the GSNR modeling task is decomposed into three key power predictions: ASE, NLI, and signal powers before EDFA entry. Second, to enhance cross-scenario gener...
| Authors | Xiaoxuan Gao, Rentao Gu, Yingchun Wang et al. |
|---|---|
| Primary category | cs.NI |
| Published | 11 August 2026 |
| Last updated at source | 11 August 2026 |
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