High-speed Optical Hold Module in Optical Assisted ADC
High-speed Photonic Analog-to-Digital Convertor (ADC) has attracted intense interest of researchers for the past three decades, for it has the potential applications in areas that have extreme bandwidth requirements, such as radio astronomy, real-time measurements and so on. Photonic ADCs can be categorized into two major classes: optical assisted ADC and all-optical ADC. In optical assisted ADC, the sampling is performed in optical domain and the quantization is done in electrical domain. In all-optical ADC, the sampling, quantization and coding are done in optical domain. Optical assisted ADC combines the ultra-stable, ultra-low time jitter characterizations of mode-locked lasers and mature high-speed electronic circuits, therefore it is much easier to implement in practical systems. However, the ultra-short (less than tens of pico-seconds) post-sampling pulse sequence required by high resolution ADC places a challenge for the following electrical processing, because ultra-high-speed (>2GHz) “integrate-hold circuits are hard to design and manufacture. In this paper, an optical hold module (OHM) is proposed, theoretically analyzed, numerically simulated and experimentally demonstrated, which can be used to replace ultra-high-speed “integrate-hold circuits and has more merits than the latter. This optical hold module has potential applications in several other areas, such as fiber sensors, and so on.
Photonic Sampling Optical Assisted ADC All-Optical ADC All-Optical Signal Processing Signal Sampling Pulse Broadening All-Optical Quantization Laser Pulses
Xin Fu Hongming Zhang Minyu Yao
State Key Laboratory on Integrated Optoelectronics,Tsinghua National Laboratory for InformationScien State Key Laboratory on Integrated Optoelectronics,Tsinghua National Laboratory for Information Scie
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）