title: Refractive-index profiling of optical fibers with axial symmetry by use of quantitative phase microscopy.
abstract: The application of quantitative phase microscopy to refractive-index profiling of optical fibers is demonstrated. Phase images of axially symmetric optical fibers immersed in index-matching fluid are obtained, and the inverse Abel transform is used to obtain the radial refractive-index profile. This technique is straightforward, nondestructive, repeatable, and accurate. Excellent agreement, to within approximately 0.0005, between this method and the index profile obtained with a commercial profiler is obtained.
authors.forename: A
authors.initials: A
authors.lastname: Roberts
authors.forename: E
authors.initials: E
authors.lastname: Ampem-Lassen
authors.forename: A
authors.initials: A
authors.lastname: Barty
authors.forename: K A
authors.initials: KA
authors.lastname: Nugent
authors.forename: G W
authors.initials: GW
authors.lastname: Baxter
authors.forename: N M
authors.initials: NM
authors.lastname: Dragomir
authors.forename: S T
authors.initials: ST
authors.lastname: Huntington