title: Measurement of modal dispersion in optical fiber by means of acousto-optic coupling.
abstract: We show that frequency-wavelength tuning characteristics of acousto-optic coupling can be used for measuring the difference of effective index, group index, and chromatic dispersion between core and cladding modes in single-mode fibers. Chromatic dispersion measurements of a 30-cm-long conventional single-mode fiber, a nonzero dispersion-shifted fiber, and a dispersion-compensating fiber with this new method are presented for the wavelength range 1500-1600 nm. Qualitative agreement with independently measured data is obtained.
authors.affiliation: Department of Electrical and Computer Engineering, Henry Samueli School of Engineering, University of California, Irvine, Irvine, California 92697, USA.
authors.forename: Qun
authors.initials: Q
authors.lastname: Li
authors.forename: Pedram Zare
authors.initials: PZ
authors.lastname: Dashti
authors.forename: I V
authors.initials: IV
authors.lastname: Tomov
authors.forename: H P
authors.initials: HP
authors.lastname: Lee