Corrections to “Channel Power Optimization of WDM Systems Following Gaussian Noise Nonlinearity Model in Presence of Stimulated Raman Scattering” [Nov 17, no. 23, 5237-5249]

An error in the equations in the Appendix of the above-named work [ibid., vol. 35, no. 23, pp. 5237–5249, Nov. 2017] has been identified. The corrected equations fix a contradiction in the printed statement at the end of the Appendix. The numerical results presented, including optimized power allocations and figures, used the incorrect model as printed. For the significantly tilted optimized power allocations considered and at the relatively low total fiber powers considered, using the correct model yields a negligible change to those results, so the interpretation and conclusions remain unaltered. The model as corrected here yields correct results at arbitrary power levels, including levels much higher than those considered in the paper.