title: Minimum length of a single-mode fiber spatial filter.
abstract: Using the concept of leaky modes, we derive the minimum length of a single-mode fiber required to act as a spatial-mode filter of given quality. The degree of filter action is defined by the ratio of power carried by the fundamental mode to that carried by the leaky modes.
authors.affiliation: Institut für Nachrichtentechnik und Hochfrequenztechnik, Technische Universität Wien, Gusshausstrasse 25/389, A-1040 Vienna, Austria. oswald.wallner@ieee.org
authors.forename: Oswald
authors.initials: O
authors.lastname: Wallner
authors.forename: Walter R
authors.initials: WR
authors.lastname: Leeb
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Winzer