Fig. 3: Comparison between the reconstructed spectra (red curves) and the measurements (black curves) from a commercial grating-based spectrometer (Horiba iHR550).
From: Ultra-simplified diffraction-based computational spectrometer
It should be noticed that all these results are normalized to their peak intensities and the QE coefficient of the detector is eliminated from the reconstructions. a Calculated discrete scatters (yellow circles) of a spectrum with 4 narrowband peaks corresponding to 532 nm, 580 nm, 633 nm, and 710 nm, compared with the measurement. b The reconstructed spectrum (red line) from the calculated discrete data in (a). c Calculated discrete scatters and the reconstructions of a bimodal spectrum with peaks of 8 nm apart under different Hann kernel sizes compared with the measurement. d The reconstruction of a bimodal spectrum with peaks of 3 nm separation. e, f Reconstructions of two different broadband spectra modulated by filters from a supercontinuum light source with the bandwidth of 100 nm and 230 nm, respectively. In f, the mean spectrum of five trials of measurements and the corresponding error bar (standard deviation)
