An optical quantizing and coding method for all-optical ADC based on asymmetrical nonlinear optical-loop mirrors
Self-and cross-phase modulation (SPM, XPM) in fiber is expected to play a major role in ultrafast all-optical analog-todigital conversion(ADC), which can overcome the obstacles of inherently limited operating speed of electronic ADC. In this paper, we propose an optical quantizing and coding method for all-optical ADC based on asymmetrical nonlinear optical-loop mirrors. The multiperiod transfer function, which is the key to quantizing and coding, is achieved through a careful design of the asymmetrical nonlinear optical-loop mirrors. We conducted proof-of-principle numerical simulation and successfully demonstrated 3-bits all optical ADC with Gray code output, it is ready for experiments in future. The proposed optical quantizing and coding, combined with existing optical sampling techniques, will enable ultrafast photonic ADC without electronics.
Optical analog-to-digital conversion self-phase modulation cross-phase modulation. nonlinear optical loop mirror symmetrical Sagnac interferometer.
Lixun Zhang Yong Liu Yongzhi Liu
School of Opto-Electronic Information,University of Electronic Science and Technology of China,Chengdu,610054,P.R.China;Key Laboratory of Broadband Optical Fiber Transmission & Communication Networks,Ministry of Education (UESTC)
国际会议
2008亚太光通信会议(Asia-Pacific Optical Communications 2008)
杭州
英文
2008-10-26（万方平台首次上网日期，不代表论文的发表时间）