title: Measuring the refractive-index profile of optical fibers by the cladding-mode near-field technique.
abstract: A new measurement system has been developed that simply determines the refractive-index profile of any optical fiber by analyzing the propagation of cladding modes. Measurement accuracy was verified by a comparison with the refractive near-field method, and a sufficient resolution level was achieved to produce the fine structural details in single-mode fibers.
authors.forename: W H
authors.initials: WH
authors.lastname: Hatton
authors.forename: E L
authors.initials: EL
authors.lastname: Buckland
authors.forename: M
authors.initials: M
authors.lastname: Nishimura