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Proceedings Paper

The diffraction limit of an optical spectrum analyzer
Author(s): V. G. Kolobrodov; G. S. Tymchik; M. S. Kolobrodov
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Paper Abstract

This article examines a systematic error that occurs in optical spectrum analyzers and is caused by Fresnel approximation. The aim of the article is to determine acceptable errors of spatial frequency measurement in signal spectrum. The systematic error of spatial frequency measurement has been investigated on the basis of a physical and mathematical model of a coherent spectrum analyzer. It occurs as a result of the transition from light propagation in free space to Fresnel diffraction. Equations used to calculate absolute and relative measurement errors depending on a diffraction angle have been obtained. It allows us to determine the limits of the spectral range according to the given relative error of the spatial frequency measurement.

Paper Details

Date Published: 30 November 2015
PDF: 7 pages
Proc. SPIE 9809, Twelfth International Conference on Correlation Optics, 98090F (30 November 2015); doi: 10.1117/12.2228534
Show Author Affiliations
V. G. Kolobrodov, National Technical Univ. of Ukraine (Ukraine)
G. S. Tymchik, National Technical Univ. of Ukraine (Ukraine)
M. S. Kolobrodov, National Technical Univ. of Ukraine (Ukraine)


Published in SPIE Proceedings Vol. 9809:
Twelfth International Conference on Correlation Optics
Oleg V. Angelsky, Editor(s)

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