title: Differential interferometry of gamma-irradiated optical fibers.
abstract: An interferometric method is discussed which enables changes in refractive index of irradiated optical fibers to be determined. The method was used to determine the changes of step-index fibers irradiated with 1 krad of gamma rays from a (60)Co source. In one case, relative changes in the core and cladding radii of 3.9% and 1.8%, respectively, and in the core and cladding refractive indices of 2.8% and 2.26%, respectively, have been determined.
authors.forename: M
authors.initials: M
authors.lastname: Bertolotti
authors.forename: A
authors.initials: A
authors.lastname: Ferrari
authors.forename: F
authors.initials: F
authors.lastname: Scudieri
authors.forename: A
authors.initials: A
authors.lastname: Serra