Fig. 4: Spectra of narrow band sources (white light followed by narrow band filters) measured by the parallel spectrometer design (blue bold) and by the benchtop spectrometer for the same corresponding OPD range (red dash dot).
From: On-chip parallel Fourier transform spectrometer for broadband selective infrared spectral sensing
i Spectrum of a single interferometer. ii, iii and iv Spectrum of the concatenated interferograms of two interferometers, three interferometers and four interferometers, respectively. a Spectra of the filter at 1.55 μm. b Spectra of the filter at 2 μm
