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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 2 — Jan. 10, 2003
  • pp: 264–270

Dynamic demonstration of diffractive optic analog-to-digital converter scheme

Sheila Galt, Anders Magnusson, and Sverker Hård  »View Author Affiliations


Applied Optics, Vol. 42, Issue 2, pp. 264-270 (2003)
http://dx.doi.org/10.1364/AO.42.000264


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Abstract

Dynamic behavior of an analog-to-digital converter (ADC) based on diffractive optical element(s) (DOE)(s) was studied and found to be in agreement with predictions. The analog signal was translated to an angular deflection of a laser beam by means of an acousto-optic (AO) cell. The number of bits in this experimental demonstration was three, using an eight-element DOE array. The maximum sample rate was found to be 2.5 MS/s, the limiting factor being the transit time for the acoustic wave across the width of the laser beam in the AO cell. The study is intended as a first dynamic demonstration of a proposed ADC scheme previously demonstrated in a quasi-static version. The full potential of the ADC scheme will require the use of a fast tunable diode laser to replace the AO deflection scheme used here.

© 2003 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(200.4740) Optics in computing : Optical processing

History
Original Manuscript: May 24, 2002
Revised Manuscript: October 7, 2002
Published: January 10, 2003

Citation
Sheila Galt, Anders Magnusson, and Sverker Hård, "Dynamic demonstration of diffractive optic analog-to-digital converter scheme," Appl. Opt. 42, 264-270 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-2-264

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