title: Alignment tolerances for plane-wave to single-mode fiber coupling and their mitigation by use of pigtailed collimators.
abstract: We discuss the efficiency with which coherent plane waves can be coupled to single-mode fibers in the presence of deterministic or stochastic misalignments of the fiber relative to the focal point of a lens. We point out how the alignment demands can be relaxed by means of graded-index-lens fiber-pigtailed collimators.
authors: Institut für Nachrichtentechnik und Hochfrequenztechnik, Vienna University of Technology, Austria. oswald.wallner@ieee.org
authors: Oswald
authors: O
authors: Wallner
authors: Peter J
authors: PJ
authors: Winzer
authors: Walter R
authors: WR
authors: Leeb