Novel configuration for cross-gain modulation (XGM) wavelength conversion based on the single-port-coupled semiconductor optical amplifier (SOA), in which the input and the output share one port, has been demonstrated...Novel configuration for cross-gain modulation (XGM) wavelength conversion based on the single-port-coupled semiconductor optical amplifier (SOA), in which the input and the output share one port, has been demonstrated with the output extinction ratio as high as 15 dB, even in the 2.5 Gbit/s wavelength up conversion with a 12.8 nm span. Owing to the existence of double-pass gain and the transmission loss of the rear facet, the novel scheme can be achieved with simpler implementation and higher output extinction ratio, compared with the conventional schemes based on double-port-coupled SOA either with identical long chip or double long chip.展开更多
A 3-input all-optical priority encoder is designed. Proof-of-concept experiment is performed at 40-Gbit/s based on a cross-gain modulation （XGM） in two parallel semiconductor optical amplifiers （SOAs）. Output logi...A 3-input all-optical priority encoder is designed. Proof-of-concept experiment is performed at 40-Gbit/s based on a cross-gain modulation （XGM） in two parallel semiconductor optical amplifiers （SOAs）. Output logic signals with over 10-dB extinction ratios （ERs） and clear open eye diagrams are obtained. No additional input light beam is used. The proposed scheme may be a promising candidate for future ultrafast all-optical digital signal processing circuits and computing systems.展开更多
基金The authors would like to thank Dr. Zhang Zheming, Dr. Huang Gefan, Dr. Gong Wei and Dr. Fu Yan-feng at Wuhan Institute of Post and Telecommunication for their kind help This work was supported by the National High Technology Development Program of Chi
文摘Novel configuration for cross-gain modulation (XGM) wavelength conversion based on the single-port-coupled semiconductor optical amplifier (SOA), in which the input and the output share one port, has been demonstrated with the output extinction ratio as high as 15 dB, even in the 2.5 Gbit/s wavelength up conversion with a 12.8 nm span. Owing to the existence of double-pass gain and the transmission loss of the rear facet, the novel scheme can be achieved with simpler implementation and higher output extinction ratio, compared with the conventional schemes based on double-port-coupled SOA either with identical long chip or double long chip.
基金This work was supported by the National Science Fund for Distinguished Young Scholars （No. 61125501）, the National Natural Science Foundation of China （Grant No. 60877056）, and the National Basic Research Program of China （No. 2011CB301704）.
文摘A 3-input all-optical priority encoder is designed. Proof-of-concept experiment is performed at 40-Gbit/s based on a cross-gain modulation （XGM） in two parallel semiconductor optical amplifiers （SOAs）. Output logic signals with over 10-dB extinction ratios （ERs） and clear open eye diagrams are obtained. No additional input light beam is used. The proposed scheme may be a promising candidate for future ultrafast all-optical digital signal processing circuits and computing systems.
