Chen Yongzhou, Long Xiping. Study on repeaterless transmission spans of single-channel 10Gbit/s lines[J]. 2008,(6):1-3. DOI: 10.13756/j.gtxyj.2008.06.005.
intersymbol interferences brought about by nonlinear effects must be removed in long-haul transmissions.At present
the dispersion compensation
EDFA and Raman technologies are often applied for this purpose.In-depth researches on these technologies have greatly improved the line transmission quality and extended the repeaterless line transmission span.This paper introduces a method for improving the system OSNR and extending the transmission span by enhancing the input power of the EA laser.Experiments prove that optical input power at 18 dB can still ensure the transmission quality.