title: Arbitrary single-mode coupling by tapered and nontapered grin fiber lenses.
abstract: Arbitrary modal field coupling is analyzed and optimized by using tapered and nontapered GRIN fiber lenses as single-mode optical fiber connectors. Conditions for achieving maximum coupling efficiency are derived.
authors.forename: J
authors.initials: J
authors.lastname: Linares
authors.forename: C
authors.initials: C
authors.lastname: Gomez-Reino