A scanning
interferometer, containing no principal dispersive element, which first splits a beam into two or
more components, then recombines these with a phase difference. The spectrum is obtained
by a Fourier
transformation of the output of the
interferometer.
Source:
PAC, 1996, 68, 2223
(Glossary of terms used in photochemistry (IUPAC Recommendations 1996))
on page 2243