title: Tunneling - radiating effect in elliptical step-index fibers.
abstract: The tunneling region below cutoff frequency of the different modes in an elliptical step-index fiber is examined. The whispering modes can undergo either a pure tunneling or a tunneling-radiating effect, whereas the bouncing modes show only the tunneling-radiating effect.
authors.affiliation: Istituto di Ricerca sulle Onde Elettromagnetiche, CNR, Firenze, Italy.
authors.forename: P F
authors.initials: PF
authors.lastname: Checcacci
authors.forename: R
authors.initials: R
authors.lastname: Falciai
authors.forename: A M
authors.initials: AM
authors.lastname: Scheggi