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Single mode fiber array for planet detection using a visible nulling interferometer

Show simple item record Liu, Duncan Levine, B. Martin Shao, Michael Aguayo, Franciso 2006-02-27T20:52:31Z 2006-02-27T20:52:31Z 2005-03-05
dc.identifier.citation IEEE Aerospace Conference, Big Sky, Montana, March 05, 2005. en
dc.identifier.clearanceno 04-3606
dc.description.abstract We report the design, fabrication, and testing of a coherent large mode field diameter fiber array to be used as a spatial filter in a planet finding visible nulling interferometer. The array is a key component of a space instrument for visible-light detection and spectroscopy of Earth like extrasolar planets. In this concept, a nulling interferometer is synthesized from a pupil image of a single aperture which is then spatially filtered by a coherent array of single mode fibers to suppress the residual scattered star light. The use of the fiber array preserves spatial information between the star and planet. The fiber array uses a custom commercial large mode field or low NA step-index single mode fiber to relax alignment tolerances. A matching custom micro lens array is used to couple light into the fibers, and to recollimate the light out of the fiber array. The use of large mode field diameter fiber makes the fabrication of a large spatial filter array with 300 to 1000 elements feasible. en
dc.description.sponsorship NASA/JPL en
dc.format.extent 381915 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2005. en
dc.subject spatial filters en
dc.subject nulling interferometer en
dc.subject fiber arrays en
dc.subject lens arrays en
dc.title Single mode fiber array for planet detection using a visible nulling interferometer en
dc.type Preprint en

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