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.
© 2002 Optical Society of America
(060.2390) Fiber optics and optical communications : Fiber optics, infrared
(060.2400) Fiber optics and optical communications : Fiber properties
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(070.6110) Fourier optics and signal processing : Spatial filtering
(230.7370) Optical devices : Waveguides
Oswald Wallner, Walter R. Leeb, and Peter J. Winzer, "Minimum length of a single-mode fiber spatial filter," J. Opt. Soc. Am. A 19, 2445-2448 (2002)