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- W1995364847 abstract "Spectral modulated interference fringes are observed in the form of the periodical modulation of broadband spectrum at the output of interferometer provided with a subsequent spectrometer. Group optical path difference of interfering light waves corresponding to the distance from the surface to be measured is characterized by the phase function or fringe frequency of the spectral modulated interferogram. The phase locked loop (PLL) method was used to demodulate spectral fringes. It is supposed a priori unknown carrier fringe frequency, and PLL technique is realized in iterative mode to calculate full fringe phase. At the first iteration step the fringe phase equal to zero is supposed. The second iteration takes the demodulated phase found form the first iteration, etc. As a result, the phase function of the spectral fringes is found. Method was verified experimentally with application to the analysis of the spectral modulated interferograms inherent in Michelson interferometer excited by a low-coherent source." @default.
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- W1995364847 date "2002-04-03" @default.
- W1995364847 modified "2023-09-23" @default.
- W1995364847 title "Mensuration of the spectral modulated interferograms by the iterative phase-locked loop method" @default.
- W1995364847 doi "https://doi.org/10.1117/12.464466" @default.
- W1995364847 hasPublicationYear "2002" @default.
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