19-Gb/s adaptively modulated optical OFDM transmission by separated I/Q baseband delivery using 1 GHz RSOAs

19-Gb/s transmission over 23-km SMF is demonstrated based on 1-GHz bandwidth limited RSOAs with adaptively modulated optical OFDM. A novel baseband transmission technique is applied to halve the sampling speed requirements compared to traditional OFDM transmission techniques using Hermitian Symmetric. Selective bit loading with pre-emphasis and compensation is used to optimize the transmission performance.

► We have demonstrated 19-Gb/s optical OFDM signal transmission over 23-km SMF.
► This system based on separated I/Q baseband delivery using 1 GHz RSOAs.
► This transmission technique is applied to halve the sampling speed requirements.
► Adaptive modulation with pre-emphasis and compensation are used to optimize.
► The proposed technique would be useful to colorless ONU based on 1 GHz RSOAs.