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Proceedings Paper

An optical fiber-based high contrast imager
Author(s): Stefan R. Martin; Kurt M. Liewer; Alexander Ksendzov; Eugene Serabyn
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Paper Abstract

Arrays of single mode fibers can be used to form segmented pupils of almost arbitrary geometry. Such pupil arrays can be used both for interferometric imaging, for example by non-redundant aperture masking or in direct imaging systems such as the phased array coronagraph. Achieving control over the optical coupling, phase and dispersion for fiber arrays of reasonable size is a technological challenge. Progress has been made using a monolithic block of single mode fibers, lens arrays and masks, and mirror arrays. On one testbed, arrays of up to 37 beamlets are being combined to form a single image. On a second testbed, control of dispersion between fibers of slightly different length is being evaluated. The combination of the techniques being demonstrated has a range of potential uses in astronomy. In this paper we discuss the initial testbed results.

Paper Details

Date Published: 14 September 2011
PDF: 13 pages
Proc. SPIE 8146, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts V, 81460J (14 September 2011); doi: 10.1117/12.895517
Show Author Affiliations
Stefan R. Martin, Jet Propulsion Lab. (United States)
Kurt M. Liewer, Jet Propulsion Lab. (United States)
Alexander Ksendzov, Jet Propulsion Lab. (United States)
Eugene Serabyn, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 8146:
UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts V
Howard A. MacEwen; James B. Breckinridge, Editor(s)

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