Phase measurement improvement in temporal speckle pattern interferometry using empirical mode decomposition |
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| Authors: | Fernando A. Marengo Rodriguez Alejandro Federico |
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| Affiliation: | a Instituto de Física Rosario (Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Rosario), Blvd. 27 de Febrero 210 bis, S2000EZP Rosario, Argentina
b Electrónica e Informática, Instituto Nacional de Tecnología Industrial, P.O. Box B1650WAB, B1650KNA San Martín, Argentina |
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| Abstract: | When the Hilbert transform method is used to recover the phase distribution in temporal speckle pattern interferometry, the influence of the fluctuations of the bias and the modulation intensities on the calculated phase must be driven heuristically. In this paper we show that the Empirical Mode Decomposition method can overcome these drawbacks and consequently introduces an improvement in the evaluation of the phase distribution. An example is used to illustrate the phase measurement improvement that can be obtained by the application of the proposed approach. |
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| Keywords: | 42.30.Ms 42.30.Rx 42.40.Kw |
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