Alignment tolerances for plane-wave to single-mode fiber coupling and their mitigation by use of pigtailed collimators.
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.
Wallner
Oswald
O
Institut für Nachrichtentechnik und Hochfrequenztechnik, Vienna University of Technology, Austria. oswald.wallner@ieee.org
Winzer
Peter J
PJ
Leeb
Walter R
WR