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Optical Engineering

Intelligent reduction of zero-order diffraction in Fourier optical systems
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Paper Abstract

A simple and intelligent technique of reducing the zero-order diffraction in an optical spectrographic processor is discussed and the corresponding nonbias optical architecture, by which spectrograms can indeed be obtained, is proposed. Reduction of zero-order diffraction in a Fourier optical system arises from the removal of the dc bias, which is usually needed when a conventional optical spectrographic processor is utilized. We have shown that discrimination sensitivity of the optical spectrograms is significantly enhanced and the dynamic range (DR) requirement for the spectrogram capturing device is also notably reduced due to the removal of the dc bias. In addition, energy utilization efficiency in the optical signal processing is drastically improved by our nonbias architecture. Simulated demonstration is provided.

Paper Details

Date Published: 1 October 2005
PDF: 6 pages
Opt. Eng. 44(10) 103602 doi: 10.1117/1.2065407
Published in: Optical Engineering Volume 44, Issue 10
Show Author Affiliations
Yuexin Liu, The Pennsylvania State Univ. (United States)
Ruyan Guo, The Pennsylvania State Univ. (United States)
Francis T.S. Yu, The Pennsylvania State Univ. (United States)

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