作者
Anatol Khilo, Steven J Spector, Matthew E Grein, Amir H Nejadmalayeri, Charles W Holzwarth, Michelle Y Sander, Marcus S Dahlem, Michael Y Peng, Michael W Geis, Nicole A DiLello, Jung U Yoon, Ali Motamedi, Jason S Orcutt, Jade P Wang, Cheryl M Sorace-Agaskar, Miloš A Popović, Jie Sun, Gui-Rong Zhou, Hyunil Byun, Jian Chen, Judy L Hoyt, Henry I Smith, Rajeev J Ram, Michael Perrott, Theodore M Lyszczarz, Erich P Ippen, Franz X Kärtner
发表日期
2012/2/13
期刊
Optics express
卷号
20
期号
4
页码范围
4454-4469
出版商
Optica Publishing Group
简介
Accurate conversion of wideband multi-GHz analog signals into the digital domain has long been a target of analog-to-digital converter (ADC) developers, driven by applications in radar systems, software radio, medical imaging, and communication systems. Aperture jitter has been a major bottleneck on the way towards higher speeds and better accuracy. Photonic ADCs, which perform sampling using ultra-stable optical pulse trains generated by mode-locked lasers, have been investigated for many years as a promising approach to overcome the jitter problem and bring ADC performance to new levels. This work demonstrates that the photonic approach can deliver on its promise by digitizing a 41 GHz signal with 7.0 effective bits using a photonic ADC built from discrete components. This accuracy corresponds to a timing jitter of 15 fs – a 4-5 times improvement over the performance of the best electronic ADCs …
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A Khilo, SJ Spector, ME Grein, AH Nejadmalayeri… - Optics express, 2012