With the application of 100Gbit/s and 400 Gbit/s wavelength division system in optical transport network
the performances of optical fibers have been challenged. This paper has analyzed the optical performances for ultrahigh transmission system in aspects of figure of merits
optical signal-to-noise ratio
linear effect(dispersion) and nonlinear effects(self-phase modulation
cross-phase modulation and four-wave mixing)
which is of great significance for practical applications.