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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 21 — Oct. 13, 2008
  • pp: 16509–16515

Photonic subsampling analog-to-digital conversion of microwave signals at 40-GHz with higher than 7-ENOB resolution

Jungwon Kim, Matthew J. Park, Michael H. Perrott, and Franz X. Kärtner  »View Author Affiliations


Optics Express, Vol. 16, Issue 21, pp. 16509-16515 (2008)
http://dx.doi.org/10.1364/OE.16.016509


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Abstract

Conversion of analog signals into digital signals is one of the most important functionalities in modern signal processing systems. As the signal frequency increases beyond 10 GHz, the timing jitter from electronic clocks, currently limited at ~100 fs, compromises the achievable resolution of analog-to-digital converters (ADCs). Owing to their ultralow timing jitter, the use of optical pulse trains from passively mode-locked lasers has been considered to be a promising way for sampling electronic signals. In this paper, based on sub-10 fs jitter optical sampling pulse trains, we demonstrate a photonic subsampling ADC that downconverts and digitizes a narrowband microwave signal at 40 GHz carrier frequency with higher than 7 effective-number-of-bit (ENOB) resolution.

© 2008 Optical Society of America

OCIS Codes
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(140.4050) Lasers and laser optics : Mode-locked lasers
(350.4010) Other areas of optics : Microwaves
(060.5625) Fiber optics and optical communications : Radio frequency photonics
(320.7085) Ultrafast optics : Ultrafast information processing

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: September 2, 2008
Revised Manuscript: September 26, 2008
Manuscript Accepted: September 26, 2008
Published: October 1, 2008

Citation
Jungwon Kim, Matthew J. Park, Michael H. Perrott, and Franz X. Kärtner, "Photonic subsampling analog-to-digital conversion of microwave signals at 40-GHz with higher than 7-ENOB resolution," Opt. Express 16, 16509-16515 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-21-16509


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