Information-theoretic approach to Fourier transform spectrometry

摘要: We describe a specific bandpass sampling procedure that provides high efficiency for interferogram sampling. This new approach is able to mitigate the important radiometric and noise disadvantages of Fourier transform spectrometry recent theoretical investigations have pointed out. Proof concept given using simulations measurements performed with Sagnac triangular interferometer. Adopting an information-theoretic spectrometry, we demonstrate existence limitations achieved by any interferential or dispersive multiplex spectrometers. find extension optics well-known data processing inequality, confirming Fellgett (multiplex) advantage inappropriate expectation. give evidence implicit in coded aperture architecture typical compressive sensing.