A simple white-light fiber-optic interferometric sensing system for absolute position measurement
A simple white-light fiber-optic interferometric sensing system for absolute position measurement
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DOI：
10.1016/j.optlaseng.2009.08.008
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发表时间：
2010-04
影响因子：
4.6
通讯作者：
L. Manojlović
中科院分区：
文献类型：
--
作者：
L. Manojlović
An absolute position-sensing system based on a white-light spectrum modulation in a very simple fiber-optic interferometer is presented. The channelled spectrum, captured by a commercial spectrometer, is analyzed using the algorithm based on fitting the calculated autocorrelation function of the captured optical power spectrum with the sum of two Gaussian functions. The absolute position is obtained directly from the separation between two fitted Gaussian functions. The system currently provides unambiguous measurement over a range of 200μm with a minimal error of better than 6nm.
