title: Phenomenon of spectral switches as a new effect in singular optics with polychromatic light.
abstract: It is shown that the recently discovered phenomenon of so-called spectral switches has a natural interpretation in the framework of singular optics with polychromatic light and that it should be regarded as being primarily a manifestation of diffraction-induced spectral changes rather than correlation-induced spectral changes as was suggested in the original papers [the first one appearing in Opt. Commun. 162, 57 (1999)] reporting this effect.
authors.affiliation: Department of Physics and Astronomy, Mississippi State University, Mississippi State, Mississippi 39762, USA.
authors.forename: John T
authors.initials: JT
authors.lastname: Foley
authors.forename: Emil
authors.initials: E
authors.lastname: Wolf