Fig. 7: Spectral reconstruction capabilities of the on-chip OECS. | Nature Communications

Fig. 7: Spectral reconstruction capabilities of the on-chip OECS.

From: Multifunctional integrated electrochromic device by p-n conductive polymers for self-powered smart windows and miniaturized spectrometers

Fig. 7: Spectral reconstruction capabilities of the on-chip OECS.

a Reconstructed spectra of quasi-monochromatic light using the OECS, compared with reference spectra from a commercial grating spectrometer. b Spectral resolution validation showing successful discrimination of two peaks separated by 7.2 nm. c Accuracy assessment of reconstructed peak wavelengths for 1 nm-separated NIR sources, showing minimal deviation from ground-truth values. d Reconstruction of broadband spectra with a single dominant peak. e Reconstruction result of a complex broadband spectrum using a single OECS (OECD-only). f Accurate reconstruction of a cold white LED spectrum using a 16-pixel OECS array with hybrid (OECD + FP cavity array) modulation. g MSE of spectral reconstruction as a function of the number of voltage sampling points.

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