Yang Qi1, Zhang Xiaoyin1. Ultra-wideband high-capacity optical transmission based on OFDM modulation and Nyquist filtering[J]. 2012,(6):6-9. DOI: 10.13756/j.gtxyj.2012.06.006.
This paper first reviews the industrial background of realizing ultra-wideband transmission and introduces two main approaches for its realization: OFDM modulation and Nyquist filtering and their fundamental principles.It then analyzes and compares their advantages and disadvantages.Finally
it summarizes the present conditions of their researches and looks forward to their prospects.