title: Fabrication and characterization of a planar gradient-index, plasma-enhanced chemical vapor deposition lens.
abstract: A thin, one-dimensional, gradient-index slab lens with a parabolic profile was designed and fabricated in fluorine-doped silica by use of plasma-enhanced chemical vapor deposition in a Helicon plasma reactor. The refractive-index profile of the fabricated lens was determined by the application of an inversion technique to the values of modal effective index measured with a prism coupler. The periodic refocusing property of the lens and the independence of the wavelength were measured with the fluorescence of a specially doped, thin polymer layer spin-coated onto the surface of the lens.
authors.forename: D R
authors.initials: DR
authors.lastname: Beltrami
authors.forename: J D
authors.initials: JD
authors.lastname: Love
authors.forename: A
authors.initials: A
authors.lastname: Durandet
authors.forename: A
authors.initials: A
authors.lastname: Samo
authors.forename: C J
authors.initials: CJ
authors.lastname: Cogswell