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Applied Optics

Applied Optics


  • Vol. 39, Iss. 17 — Jun. 10, 2000
  • pp: 2881–2887

Study of an ultrafast analog-to-digital conversion scheme based on diffractive optics

Mathias Johansson, Björn Löfving, Sverker Hård, Lars Thylén, Mehran Mokhtari, Urban Westergren, and Costantino Pala  »View Author Affiliations

Applied Optics, Vol. 39, Issue 17, pp. 2881-2887 (2000)

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A potentially ultrafast optical analog-to-digital (A/D) converter scheme is proposed and was partly studied experimentally. In the A/D converter scheme the input signal controls the wavelength of a diode laser, whose output beam is incident on a grating. The beam from the grating hits a diffractive optical element in an array. The wavelength determines which element is illuminated. Each element fans out a unique spot-pattern bit code to be read out in parallel by individual detectors. In the experiment all patterns but one from 64 array elements were read out correctly.

© 2000 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(200.2610) Optics in computing : Free-space digital optics

Original Manuscript: August 20, 1999
Revised Manuscript: March 17, 2000
Published: June 10, 2000

Mathias Johansson, Björn Löfving, Sverker Hård, Lars Thylén, Mehran Mokhtari, Urban Westergren, and Costantino Pala, "Study of an ultrafast analog-to-digital conversion scheme based on diffractive optics," Appl. Opt. 39, 2881-2887 (2000)

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