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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 4 — Feb. 25, 2013
  • pp: 3969–3989

Filters with random transmittance for improving resolution in filter-array-based spectrometers

J. Oliver, Woong-Bi Lee, and Heung-No Lee  »View Author Affiliations

Optics Express, Vol. 21, Issue 4, pp. 3969-3989 (2013)

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In this paper, we introduce a method for improving the resolution of miniature spectrometers. Our method is based on using filters with random transmittance. Such filters sense fine details of an input signal spectrum, which, when combined with a signal processing algorithm, aid in improving resolution. We also propose an approach for designing filters with random transmittance using optical thin-film technology. We demonstrate that the improvement in resolution is 7-fold when using the filters with random transmittance over what was achieved in our previous work.

© 2013 OSA

OCIS Codes
(100.6640) Image processing : Superresolution
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.6320) Spectroscopy : Spectroscopy, high-resolution

ToC Category:

Original Manuscript: October 11, 2012
Revised Manuscript: December 7, 2012
Manuscript Accepted: January 13, 2013
Published: February 11, 2013

Virtual Issues
Vol. 8, Iss. 3 Virtual Journal for Biomedical Optics

J. Oliver, Woong-Bi Lee, and Heung-No Lee, "Filters with random transmittance for improving resolution in filter-array-based spectrometers," Opt. Express 21, 3969-3989 (2013)

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