Minimum length of a single-mode fiber spatial filter.
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.
Wallner
Oswald
O
Institut für Nachrichtentechnik und Hochfrequenztechnik, Technische Universität Wien, Gusshausstrasse 25/389, A-1040 Vienna, Austria. oswald.wallner@ieee.org
Leeb
Walter R
WR
Winzer
Peter J
PJ