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Proceedings Paper

Optically assisted high-speed, high resolution analog-to-digital conversion
Author(s): Henry Zmuda; Shane Hanna; R. J. Bussjager; M. L. Fanto; M. J. Hayduk; S. T. Johns; J. E. Malowicki; P. L. Repak
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Paper Abstract

An approach that modifies an analog fiber optic link with a recirculating optical loop as a means to realize a high-speed, high-resolution Analog-to-Digital Converted (ADC) is presented. The loops stores a time-limited microwave signal so that it may be digitized by using a slower, conventional electronic ADC. Detailed analytical analysis of the dynamic range and noise figure shows that under appropriate conditions the microwave signal degradation is sufficiently small so as to allow the digitization of a multi-gigahertz signal with a resolution greater than 10 effective bits. Experimental data is presented which shows that a periodic extension of the input signal can be sustained for well over one hundred periods that in turn suggests an electronic ADC speed-up factor of over 100. The data also shows that polarization effects must be carefully managed to inhibit the loops tendency to lase even though the loop itself contains no frequency-selective elements.

Paper Details

Date Published: 24 May 2005
PDF: 11 pages
Proc. SPIE 5814, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications, (24 May 2005); doi: 10.1117/12.609863
Show Author Affiliations
Henry Zmuda, Univ. of Florida (United States)
Shane Hanna, Univ. of Florida (United States)
R. J. Bussjager, Air Force Research Lab. (United States)
M. L. Fanto, Air Force Research Lab. (United States)
M. J. Hayduk, Air Force Research Lab. (United States)
S. T. Johns, Air Force Research Lab. (United States)
J. E. Malowicki, Air Force Research Lab. (United States)
P. L. Repak, Air Force Research Lab. (United States)


Published in SPIE Proceedings Vol. 5814:
Enabling Photonics Technologies for Defense, Security, and Aerospace Applications
Andrew R. Pirich; Michael J. Hayduk; Eric J. Donkor; Peter J. Delfyett Jr., Editor(s)

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