Spectrum-efficient 50-Gbps Long-Range Optical Access over 85-km SSMF via DML Using Windowed OFDM Supporting Quasi-Gapless Asynchronous Multiband Transmission

This paper demonstrates a long-range optical access network using windowed OFDM, providing 50.22-Gbps data rate over 85-km SSMF transmission via DML. In multiband transmission, windowed OFDM has achieved 153% bandwidth gain with suppressed out-of-band leakage.