Fig. 3
From: Computational spectropolarimetry with a tunable liquid crystal metasurface
Simulated spectropolarimetric reconstruction. a Comparison of reconstructed wavelengths and polarization states with the ground truth for monochromatic incident light. Dashed and solid lines in insets represent reconstructed polarization states and ground truth, respectively. b Illustration of the Poincaré sphere and the definition of εp. The solid and hollow circle represents the ground truth and reconstructed polarization, respectively. c,d The polarization and wavelength measurement error εp (blue line) and ελ (orange line) as a function of Np (c) and SNR (d), respectively. e Comparison between the reconstructed spectrum (upper panel) and Stokes parameters (lower panel) and the ground truth for a broadband input signal. Dashed and solid lines in the inset of the upper panel represent reconstructed polarization states and the ground truth, respectively. f Reconstructed narrowband spectra with a fixed bandwidth of 2 nm and peak positions of 1430 nm, 1450 nm, and 1470 nm, respectively. Dashed and solid lines in the inset represent reconstructed polarization states and the ground truth, respectively. g Reconstructed peak positions of narrowband spectra ranging from 1400 to 1500 nm with a fixed bandwidth of 2 nm. The solid line is the mean reconstructed peak positions over different reconstruction cycles. The upper and lower boundaries of the shaded region are the corresponding standard deviations of the reconstructed peak position. h Reconstructed bandwidths of spectra with a fixed peak position of 1455 nm and bandwidths ranging from 1 to 10 nm. The blue line is the mean reconstructed bandwidths over different reconstruction cycles, and the black line is the ground truth. The upper and lower boundaries of the shaded region are the corresponding standard deviations of the reconstructed bandwidth