Figure 3
From: Experimental demonstration of spectral domain computational ghost imaging

Measured transmission spectra of an unequal path Michelson interferometer with 4 ps (a), 8 ps (b) and 16 ps (c) temporal delay (optical path differences of 1.2 mm, 2.4 mm and 4.8 mm, respectively) corresponding to a spectral modulation period of 2 nm, 1 nm, and 0.5 nm, respectively. (d) The signal measured by the integrating single-pixel detector as a function of the modulation pattern frequency for the case of 16 ps delay. Transmission of a wavelength-division multiplexer measured in rejection (e) and transmission (f) configurations. The solid lines marked as “c”,“m” and “d” correspond to the spectral transmission obtained from computational ghost imaging measurements using ideal complementary patterns, computational ghost imaging measurements using the measured complementary patterns at the waveshaper output, and direct measurement using the OSA, respectively.