title: Fabrication of multi-core structures in an optical fiber using plasma self-channeling.
abstract: Fabrication of multi-core structures in an optical multimode fiber was first demonstrated by the scanning of plasma self-channeling excited by a femtosecond (110 fs) laser (lambdap=790 nm).
authors.forename: Sung-Hak
authors.initials: SH
authors.lastname: Cho
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kumagai
authors.forename: Katsumi
authors.initials: K
authors.lastname: Midorikawa