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- W2135432938 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. In this paper, we present the fabrication of a fiber array made with a custom small NA (~ 0.04) conventional single mode fiber to alleviate the problem associated with regular 0.1NA fiber array and 0.04NA PCF array." @default.
- W2135432938 created "2016-06-24" @default.
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- W2135432938 date "2005-01-01" @default.
- W2135432938 modified "2023-10-03" @default.
- W2135432938 title "Single Mode Fiber Array for Planet Detection using a Visible Nulling Interferometer" @default.
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- W2135432938 doi "https://doi.org/10.1109/aero.2005.1559529" @default.
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