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Applied Optics

Applied Optics


  • Vol. 31, Iss. 8 — Mar. 10, 1992
  • pp: 1074–1082

Synthesis of diffractive optical bar codes

Steven J. Bever and Jan P. Allebach  »View Author Affiliations

Applied Optics, Vol. 31, Issue 8, pp. 1074-1082 (1992)

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A new type of diffractive optical bar code (DOBC) is proposed. Rather than scanning directly, the DOBC is coherently illuminated, and the first diffraction order is sensed. The spacing between the bars is chosen so that the thresholded diffraction pattern yields a specified binary code. Two approaches are investigated for synthesis of the DOBC: phase shaping and a gradient-based, nonlinear, constrained optimization technique. The two design methods are compared based on numerical results, and the validity of the overall design approach is verified by optically sensing the diffraction patterns for a number of fabricated DOBC’s.

© 1992 Optical Society of America

Original Manuscript: June 19, 1990
Published: March 10, 1992

Steven J. Bever and Jan P. Allebach, "Synthesis of diffractive optical bar codes," Appl. Opt. 31, 1074-1082 (1992)

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