Title :
13.625 Gb/s real-time dual-band adaptive optical orthogonal frequency division multiplexing transmissions over 25 km standard single-mode fibre intensity modulation and direct detection systems utilising strongly saturated reflective semiconductor optical
Author :
Qianwu Zhang ; Hugues-Salas, E. ; Giddings, R.P. ; Junjie Zhang ; Min Wang ; Jianming Tang
Author_Institution :
Sch. of Electron. Eng., Bangor Univ., Bangor, UK
Abstract :
Record-high 13.625 Gb/s real-time end-to-end dual-band optical orthogonal frequency division multiplexing (OFDM) transmissions are experimentally demonstrated over intensity modulation and direct detection-based 25 km standard single-mode fibres utilising 1.125 GHz reflective semiconductor optical amplifier (RSOA) intensity modulators. The 7.375 Gb/s OFDM baseband (0-2 GHz) and 6.25 Gb/s OFDM passband (4.125-8.125 GHz) are adaptively modulated independently and sampled at 4 GS/s. Experimental results show that strongly saturated RSOAs can intensity-modulate adaptive bit- and power-loaded radio frequency (RF) OFDM signals having bandwidths approximately eight times higher than the 3 dB small-signal modulation bandwidths of the RSOAs.
Keywords :
OFDM modulation; intensity modulation; optical modulation; passive optical networks; semiconductor optical amplifiers; OFDM baseband; OFDM passband; bit rate 13.625 Gbit/s; bit rate 6.25 Gbit/s; bit rate 7.375 Gbit/s; direct detection-based standard single-mode fibres; frequency 0 GHz to 2 GHz; frequency 1.125 GHz; frequency 4.125 GHz to 8.125 GHz; intensity-modulate adaptive bit-loaded RF OFDM signal; power-loaded RF OFDM signal; real-time end-to-end dual-band optical orthogonal frequency division multiplexing transmission; saturated RSOA; saturated reflective semiconductor optical amplifier intensity modulators; size 25 km; standard single-mode fibre intensity modulation;
Journal_Title :
Optoelectronics, IET
DOI :
10.1049/iet-opt.2013.0106
