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Proceedings Paper

High speed optoelectronics polyphase scheme for sampling and demultiplexing RF analog signals
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Paper Abstract

A novel optoelectronic scheme for optical sampling and parallel demultiplexing of different phases (polyphase) of an input analog signal is presented. With this scheme higher sampling rate can be attained by scaling. A unique feature of this approach is that the electrical-in to electrical-out signal transfer is maintained for the optoelectronic sampling and demultiplexing process. We demonstrate the basic tenets of this approach by implementing an optoelectronics two-stages divide-by-four decimator circuit where the first stage demultiplexs a sampled signal having a repetition rate f into its even and odd subsamples with each subsample having a repetition rate of f/2 , and the second stage demultiplexs the even and odd subsamples into four subsamples, odd/odd, odd/even, even/odd and even/even, each subsample having a repetition rate of . f/4 As a practical testing, a 100MHz RF electrical signal was sampled at the rate of 1.28GSPS (Giga/Samples/Sec) and demultiplexed into four 320GSPS sampled signals.

Paper Details

Date Published: 24 March 2008
PDF: 8 pages
Proc. SPIE 6975, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications IV, 69750G (24 March 2008); doi: 10.1117/12.781449
Show Author Affiliations
Carlos Villa, Univ. of Connecticut (United States)
Patrick Kumavor, Univ. of Connecticut (United States)
Aaron Feldstein, Univ. of Connecticut (United States)
Jennifer Hernandez, Univ. of Connecticut (United States)
Eric Donkor, Univ. of Connecticut (United States)


Published in SPIE Proceedings Vol. 6975:
Enabling Photonics Technologies for Defense, Security, and Aerospace Applications IV
Michael J. Hayduk; Peter J. Delfyett; Andrew R. Pirich; Eric J. Donkor, Editor(s)

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