Abstract
This paper investigates the Quality-factor (Q-factor) deterioration due to individual effects of stimulated Raman scattering, cross-phase modulation, and four-wave mixing and their collective impact on system Q-factor in presence of amplified spontaneous emission noise for various ITU-T compliant fibers (G.652, G. 652D, G. 653, G. 654, and G.655), considering the optical frequency grid based on ITU-T Recommendation G.692. The results obtained through the developed mathematical model show very clearly that the performance of G.653 fiber is worst compared to other fiber types, thus justifying the preferred use of fibers with high dispersion and effective area values (G.652, G.652D, G.654, and G.655) over G.653 in view of combating the deleterious effects of nonlinearities. The results suggest that with the use of a fiber having low dispersion and effective area values, it may not be possible to obtain the desired error rate of 10−9 (Q=6). The simulation results make it evident that deterioration due to nonlinearities is not the same for different fiber types which suggest the nature of limitations due to different nonlinearities and fiber types.
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