Characterization Of A Snapshot Fourier Transform Imagingspectrometer Based On An Array Of Fabry-Perot Interferometers

This study focuses on a novel snapshot Fourier Transform imaging spectrometer based on an array of Fabry-Perot interferometers. This device fully relies on signal processing in order to provide intelligible outputs and thus requires a precise characterisation. In this paper, we present a strategy for estimating the thickness of the Fabry-Perot cavities, as this information is typically not precise or even available. This is a fundamental step for obtaining calibrated acquisitions with this device and for allowing further data processing and analysis. The proposed technique relies on the device optical model and has proven effective with respect to alternative strategies when applied to real acquisitions.