25.25-Gb/s Real-Time Multi-Band Optical OFDM Transmission Over 300-m MMFs With IQ Modulated Passband

Abstract

Record-high 25.25-Gb/s real-time end-to-end optical orthogonal frequency-division multiplexing transmissions over an intensity-modulation and direct-detection-based 300-m OM2 multi-mode fiber links are achieved with a tri-sub-band transceiver architecture. A 9.75-Gb/s baseband signal is RF multiplexed with two 7.75-Gb/s sub-bands, which are IQ modulated onto a 6.125-GHz RF carrier. The adaptive bit/power-loaded, independently power-optimized sub-bands sampled at 4 GS/s are multiplexed to intensity modulate an EML. Similar BERs and <0.5-dB optical penalties are observed for all sub-bands.

Experimental demonstration of 60 Gb/s optical OFDM transmissions at 1550 nm over 100 m OM1 MMF IMDD system with central launching

“…Making use of adaptive subcarrier bit and subcarrier/sub-band power loading, 20.125 Gb/s real-time dual-band optical OFDM transmissions over 100 m optical mode (OM2)-only MMF systems and 20 Gb/s over 100 m OM1-only MMFs are experimentally demonstrated by Salas et al [6] . The 25.25 Gb/s real-time end-to-end optical OFDM transmissions over an IMDDbased 300 m OM2 MMF link are experimentally demonstrated with tri-sub-band transceiver architecture [18] . Mode-division multiplexing of a 30 Gb/s 2 × 2 direct-detection OFDM transmission over a 200 m OM3 conventional MMF link is demonstrated by Luo et al [19] .…”