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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 22 — Aug. 1, 2007
  • pp: 4932–4942

Performance comparison of aperture codes for multimodal, multiplex spectroscopy

Ashwin A. Wagadarikar, Michael E. Gehm, and David J. Brady  »View Author Affiliations

Applied Optics, Vol. 46, Issue 22, pp. 4932-4942 (2007)

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We experimentally evaluate diverse static independent column codes in a coded aperture spectrometer. The performance of each code is evaluated based on the signal-to-noise ratio (SNR), defined as the peak value in the spectrum to the standard deviation of the background noise, as a function of subpixel vertical misalignments. Among the code families tested, an S-matrix-based code produces spectral reconstructions with the highest SNR. The SNR is least sensitive to vertical subpixel misalignments on the detector with a Hadamard-matrix-based code. Finally, the increased sensitivity of a spectrometer using a coded aperture instead of a slit is demonstrated.

© 2007 Optical Society of America

OCIS Codes
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.6190) Spectroscopy : Spectrometers

ToC Category:

Original Manuscript: February 12, 2007
Manuscript Accepted: April 11, 2007
Published: July 3, 2007

Ashwin A. Wagadarikar, Michael E. Gehm, and David J. Brady, "Performance comparison of aperture codes for multimodal, multiplex spectroscopy," Appl. Opt. 46, 4932-4942 (2007)

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