title: Algorithms for determining the radial profile of the photoelastic coefficient in glass and polymer optical fibers.
abstract: We discuss two algorithms to determine the value and the radial profile of the photoelastic coefficient C in glass and polymer optical fibers. We conclude that C is constant over the fiber cross-sections, with exception of silica glass fibers containing a fluorine-doped depressed cladding. In the undoped and Ge-doped parts of these silica glass fibers we find a consistent value for C that is slightly larger than in bulk silica. In the fluorine-doped trenches of the absolute value of C decreases with about 27%. In polymethyl methacrylate optical fibers, the value of C significantly varies from fiber to fiber.
authors.forename: Sophie
authors.initials: S
authors.lastname: Acheroy
authors.forename: Patrick
authors.initials: P
authors.lastname: Merken
authors.forename: Thomas
authors.initials: T
authors.lastname: Geernaert
authors.forename: Heidi
authors.initials: H
authors.lastname: Ottevaere
authors.forename: Hugo
authors.initials: H
authors.lastname: Thienpont
authors.forename: Francis
authors.initials: F
authors.lastname: Berghmans