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
We propose a novel optical signal regeneration system based on wavelength converters by use of cross gain modulation in cascaded semiconductor optical amplifiers. The nonlinearity in optical input/output characteristi...We propose a novel optical signal regeneration system based on wavelength converters by use of cross gain modulation in cascaded semiconductor optical amplifiers. The nonlinearity in optical input/output characteristics and eye opening using NRZ signal were archived.展开更多
Based on cross-gain modulation of Amplified Spontaneous Emission (ASE) in Semiconductor Optical Amplifier (SOA), single to 16-channel wavelength conversion at 10Gb/s is first demonstrated simultaneously without any ad...Based on cross-gain modulation of Amplified Spontaneous Emission (ASE) in Semiconductor Optical Amplifier (SOA), single to 16-channel wavelength conversion at 10Gb/s is first demonstrated simultaneously without any additional probe lights.展开更多
An analytic solution derived by multisection model to the small-signal frequency response （SSFR） of wavelength conversion based on cross-gain modulation （XGM） in semiconductor optical amplifiers （SOAs） is presen...An analytic solution derived by multisection model to the small-signal frequency response （SSFR） of wavelength conversion based on cross-gain modulation （XGM） in semiconductor optical amplifiers （SOAs） is presented. The result contains details that can affect the characteristics of SSFR significantly more than previous ones.展开更多
All-optical XNOR and AND logic gates using four-wave mixing （FWM） and cross-gain modulation （XGM） in a single semiconductor optical amplifier （SOA） with improved dynamics are simultaneously realized. By numerica...All-optical XNOR and AND logic gates using four-wave mixing （FWM） and cross-gain modulation （XGM） in a single semiconductor optical amplifier （SOA） with improved dynamics are simultaneously realized. By numerical simulation, the effects of the input optical wave powers and injection current on the critical factors of the logic gate performances, such as the ON-OFF contrast ratio, the power-output level of the logic ＇1＇, and the difference between power outputs of the logic ＇1＇, are investigated in detail. In addition, the effect of the counter-propagating CW pump on the gain recovery is analysed.展开更多
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.
文摘We propose a novel optical signal regeneration system based on wavelength converters by use of cross gain modulation in cascaded semiconductor optical amplifiers. The nonlinearity in optical input/output characteristics and eye opening using NRZ signal were archived.
文摘Based on cross-gain modulation of Amplified Spontaneous Emission (ASE) in Semiconductor Optical Amplifier (SOA), single to 16-channel wavelength conversion at 10Gb/s is first demonstrated simultaneously without any additional probe lights.
基金Project supported by the National Nature Science Foundation of China （Grant No 60407001）, National High Technology Developing Program of China （Grant No 2006AA03Z0414）, the Science Fund for Distinguished YoungScholars of Hubei Province （Grant No 2006ABB017） and the Program for New Century Excellent Talents of Ministry of Education, China （Grant No NCET-04-0715）.
文摘An analytic solution derived by multisection model to the small-signal frequency response （SSFR） of wavelength conversion based on cross-gain modulation （XGM） in semiconductor optical amplifiers （SOAs） is presented. The result contains details that can affect the characteristics of SSFR significantly more than previous ones.
基金Project supported by the National Natural Science Foundation of China （Grant No 60407001） and the National Science Foundation for Post-doctoral Scientists of China （Grant No 20060390246）.
文摘All-optical XNOR and AND logic gates using four-wave mixing （FWM） and cross-gain modulation （XGM） in a single semiconductor optical amplifier （SOA） with improved dynamics are simultaneously realized. By numerical simulation, the effects of the input optical wave powers and injection current on the critical factors of the logic gate performances, such as the ON-OFF contrast ratio, the power-output level of the logic ＇1＇, and the difference between power outputs of the logic ＇1＇, are investigated in detail. In addition, the effect of the counter-propagating CW pump on the gain recovery is analysed.
