title: Very-large-mode-area, single-mode multicore fiber.
abstract: A single-mode evanescently coupled multicore fiber consisting of 19 hexagonally arranged cores is investigated. Theoretical and experimental results are presented and compared to an equivalent hypothetical step-index fiber. A fundamental mode with an effective area of 465 microm(2) and a beam propagation factor M(2) of 1.02 was measured, showing the high potential of the developed fiber.
authors.affiliation: Institut für Strahlwerkzeuge (IFSW), Universität Stuttgart, Pfaffenwaldring 43, 70695 Stuttgart, Germany. moritz.vogel@ifsw.uni-stuttgart.de
authors.forename: Moritz M
authors.initials: MM
authors.lastname: Vogel
authors.forename: Marwan
authors.initials: M
authors.lastname: Abdou-Ahmed
authors.forename: Andreas
authors.initials: A
authors.lastname: Voss
authors.forename: Thomas
authors.initials: T
authors.lastname: Graf