作者
Yuchen Song, Qirui Fan, Chao Lu, Danshi Wang, Alan Pak Tao Lau
发表日期
2022/11/23
期刊
Journal of Lightwave Technology
卷号
41
期号
5
页码范围
1445-1453
出版商
IEEE
简介
We propose an efficient three-step amplifier configuration algorithm to improve and maintain the generalized signal-to-noise ratio (GSNR) performance of dynamic C+L-band links in presence of amplifier spontaneous emission (ASE) noise, Kerr nonlinearity and stimulated Raman scattering (SRS) using erbium-doped fiber amplifiers (EDFA). In step 1, we derive sub-optimal signal power profiles at the beginning of each span using the local optimization global optimization (LOGO) strategy [1] that takes into account ASE noise and Kerr nonlinearity. The effect of SRS, which is the dominant impairment in wideband transmissions, is compensated through amplifier gain pre-tilt of each span in step 2. In step 3, we use the closed-form inter-channel stimulated Raman scattering Gaussian noise (ISRSGN) model [2] to compute the GSNR of a multi-span link as a function of the inline amplifier gains and tilts and propose an …
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