Design And Application Of The Ultra Long Span Fiber Transmission In Inner-Monogolia Area

2.5G SDH rate for ultra-long span optical transmission circuit in the optical fiber attenuation, optical dispersion tolerance and 10G SDH rate of ultra-long span optical transmission circuit in the optical fiber attenuation, nonlinear circuits and the effect of the optical dispersion tolerance made specific solutions. On the ultra-long span optical fiber transmission system optical amplification technology, introduced by case Raman (FRA)-release technology in the application of the actual lines. Release technology can effectively improve the line-noise ratio (OSNR), applicable to G.652, G.655 fiber, can be good to upgrade the performance of optical fiber transmission system. Ultra long haul optical transmission technology applications, network operators to reduce maintenance complexity, and reduced maintenance costs.