title: All-optical intermodal switch using periodic coupling in a two-mode waveguide.
abstract: An intermodal switch based on optically induced (through the Kerr effect) periodic coupling in a two-mode waveguide is described and demonstrated. A high-power pump beam injected into the two modes of the waveguide produces a periodic modulation of the refractive-index profile with a period equal to the modal beat length, which causes coupling between the two modes of a simultaneously injected probe beam. The operating principle was successfully demonstrated in an elliptical-core two-mode fiber with counterpropagating pump and probe beams.
authors.forename: H G
authors.initials: HG
authors.lastname: Park
authors.forename: S Y
authors.initials: SY
authors.lastname: Huang
authors.forename: B Y
authors.initials: BY
authors.lastname: Kim