title: Modal-noise evaluation in multimode-fiber transmission.
abstract: Modal noise that occurs at fiber connecting points has been investigated theoretically and experimentally. Visibility, an important factor that determines the modal-noise power, has been obtained as a function of laser-diode (LD) coherency and fiber bandwidth. Modal-noise formulas, with such parameters as visibility, fiber-connection loss, and the number of modes that the fiber supports, are presented. Modal noise that is due to LD mode-partition noise is also discussed. The analytical results agree well with the experimnental ones.
authors.forename: T
authors.initials: T
authors.lastname: Kanada
authors.forename: K
authors.initials: K
authors.lastname: Aoyama