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Optical Engineering

Novel data processing techniques for dispersive white light interferometer
Author(s): Bing Qi; Gary R. Pickrell; Juncheng Xu; Po Zhang; Yuhong Duan; Wei Peng; Zhenyu Huo; Hai Xiao; Russell G. May; Anbo Wang
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Paper Abstract

White light interferometry has been used in the sensing area for many years. A novel data processing method for demodulating the information from the interference spectrum of a white light system is presented. Compared with traditional algorithms, both high-resolution and large dynamic range have been achieved with a relatively low-cost system. Details of this arithmetic are discussed. A compact white light interferometric system employing this algorithm has been developed, combined with fiber Fabry-Perot sensors. A ∓0.5-nm stability over 48 hours with a dynamic range on the order of tens of microns has been achieved with this system. The temperature dependence of this system has been analyzed, and a self-compensating data processing approach is adopted. Experimental results demonstrated a ∓1.5-nm shift in the temperature range of 10 to 45°C.

Paper Details

Date Published: 1 November 2003
PDF: 7 pages
Opt. Eng. 42(11) doi: 10.1117/1.1613958
Published in: Optical Engineering Volume 42, Issue 11
Show Author Affiliations
Bing Qi, Virginia Polytechnic Institute and State Univ. (United States)
Gary R. Pickrell, Virginia Polytechnic Institute and State Univ. (United States)
Juncheng Xu, Virginia Polytechnic Institute and State Univ. (United States)
Po Zhang, Virginia Polytechnic Institute and State Univ. (United States)
Yuhong Duan, Virginia Polytechnic Institute and State Univ. (United States)
Wei Peng, Virginia Polytechnic Institute and State Univ. (United States)
Zhenyu Huo, Virginia Polytechnic Institute and State Univ. (United States)
Hai Xiao, Virginia Polytechnic Institute and State Univ. (United States)
Russell G. May, Virginia Polytechnic Institute and State Univ. (United States)
Anbo Wang, Virginia Polytechnic Institute and State Univ. (United States)


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