SEMPO - Singularity Expansion Method

SEMPO: Singularity Expansion Method – Parameter Optimizer

SEMPO allows to retrieve the complex poles, zeros and residues of any response function from experimental or simulated data at real frequencies.

If you want to cite this work, please refer to the original article:
I. Ben Soltane, M. Roy, R. Andre, N. Bonod, "SEMPO-Retrieving poles, residues and zeros in the complex frequency plane from an arbitrary spectral response," Comput. Phys. Commun. 320, 109929 (2026)
https://doi.org/10.1016/j.cpc.2025.109929

This online tool is a preview of some of the functionalities which can be found in the Python package:
https://github.com/ibensoltane/SEMPO

App development: Maycon BERNARDES
App deployment: Frédéric FORESTIER

File Upload

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Select a csv file with at least 3 columns:
frequency/wavelength, real part and imaginary part

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Please load data first in the Data Processing tab before running the ADC method.