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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Photonic ADC: Overcoming the bottleneck of electronic jitter
Optics Express, Volume 20, No. 4, Year 2012
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Description
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 which exist today. On the way towards an integrated photonic ADC, a silicon photonic chip with core photonic components was fabricated and used to digitize a 10 GHz signal with 3.5 effective bits. In these experiments, two wavelength channels were implemented, providing the overall sampling rate of 2.1 GSa/s. To show that photonic ADCs with larger channel counts are possible, a dual 20- channel silicon filter bank has been demonstrated. © 2012 Optical Society of America.
Authors & Co-Authors
Khilo, Anatol
United States, Cambridge
Massachusetts Institute of Technology
Spector, Steven J.
United States, Cambridge
Massachusetts Institute of Technology
Grein, Matthew E.
United States, Cambridge
Massachusetts Institute of Technology
Nejadmalayeri, Amir H.
United States, Cambridge
Massachusetts Institute of Technology
Holzwarth, Charles W.
United States, Cambridge
Massachusetts Institute of Technology
United States, Santa Clara
Intel Corporation
Sander, Michelle Y.
United States, Cambridge
Massachusetts Institute of Technology
Dahlem, Marcus S.
United States, Cambridge
Massachusetts Institute of Technology
United Arab Emirates, Abu Dhabi
Khalifa University of Science and Technology
Peng, Michael Y.
United States, Cambridge
Massachusetts Institute of Technology
Geis, Michael W.
United States, Cambridge
Massachusetts Institute of Technology
DiLello, Nicole A.
United States, Cambridge
Massachusetts Institute of Technology
Yoon, Jung U.
United States, Cambridge
Massachusetts Institute of Technology
Motamedi, Ali
United States, Cambridge
Massachusetts Institute of Technology
Orcutt, Jason S.
United States, Cambridge
Massachusetts Institute of Technology
Wang, Jade P.
United States, Cambridge
Massachusetts Institute of Technology
Sorace-Agaskar, Cheryl M.
United States, Cambridge
Massachusetts Institute of Technology
Popović, Miloš A.
United States, Cambridge
Massachusetts Institute of Technology
United States, Boulder
University of Colorado Boulder
Sun, Jie
United States, Cambridge
Massachusetts Institute of Technology
Zhou, Gui Rong
United States, Cambridge
Massachusetts Institute of Technology
United States, Sunnyvale
Synopsys Incorporated
Byun, Hyunil
United States, Cambridge
Massachusetts Institute of Technology
South Korea, Suwon
Samsung Electronics Co. Ltd.
Chen, Jian
United States, Cambridge
Massachusetts Institute of Technology
United States, Cambridge
Bbn Technologies
Hoyt, Judy L.
United States, Cambridge
Massachusetts Institute of Technology
Smith, Henry I.
United States, Cambridge
Massachusetts Institute of Technology
Ram, Rajeev J.
United States, Cambridge
Massachusetts Institute of Technology
Perrott, Michael
United States, Cambridge
Massachusetts Institute of Technology
United Arab Emirates, Abu Dhabi
Khalifa University of Science and Technology
Lyszczarz, Theodore M.
United States, Cambridge
Massachusetts Institute of Technology
Ippen, Erich P.
United States, Cambridge
Massachusetts Institute of Technology
Kärtner, Franz X.
United States, Cambridge
Massachusetts Institute of Technology
Germany, Hamburg
Universität Hamburg
Statistics
Citations: 388
Authors: 27
Affiliations: 8
Identifiers
Doi:
10.1364/OE.20.004454
e-ISSN:
10944087