Fiber coupler, system and associated methods for reducing back reflections

An apparatus which couples light to a fiber from a light source at an input plane while reducing back reflections includes returning light reflected back through such that the returning light does not substantially overlap with an output of the light source in the input plane. This apparatus may inc...

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Bibliographic Details
Main Authors KATHMAN ALAN D, JOHNSON ERIC G, TEKOLSTE ROBERT D, KOEHLER CHARLES S, WELCH WILLIAM H
Format Patent
LanguageEnglish
Published 22.05.2007
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:An apparatus which couples light to a fiber from a light source at an input plane while reducing back reflections includes returning light reflected back through such that the returning light does not substantially overlap with an output of the light source in the input plane. This apparatus may include a mode matching element and/or an angular distribution altering element. The apparatus may be reciprocal. The reciprocal apparatus may prevent light traversing the apparatus again having a change in phase of light from substantially overlapping an original object in an input plane.
Bibliography:Application Number: US20020320525