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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 3 — Feb. 2, 2009
  • pp: 1925–1934

Pupil remapping for high contrast astronomy: results from an optical testbed

T. Kotani, S. Lacour, G. Perrin, G. Robertson, and P. Tuthill  »View Author Affiliations


Optics Express, Vol. 17, Issue 3, pp. 1925-1934 (2009)
http://dx.doi.org/10.1364/OE.17.001925


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Abstract

The direct imaging and characterization of Earth-like planets is among the most sought-after prizes in contemporary astrophysics, however current optical instrumentation delivers insufficient dynamic range to overcome the vast contrast differential between the planet and its host star. New opportunities are offered by coherent single mode fibers, whose technological development has been motivated by the needs of the telecom industry in the near infrared. This paper presents a new vision for an instrument using coherent waveguides to remap the pupil geometry of the telescope. It would (i) inject the full pupil of the telescope into an array of single mode fibers, (ii) rearrange the pupil so fringes can be accurately measured, and (iii) permit image reconstruction so that atmospheric blurring can be totally removed. Here we present a laboratory experiment whose goal was to validate the theoretical concepts underpinning our proposed method. We successfully confirmed that we can retrieve the image of a simulated astrophysical object (in this case a binary star) though a pupil remapping instrument using single mode fibers.

© 2009 Optical Society of America

OCIS Codes
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(070.6110) Fourier optics and signal processing : Spatial filtering
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(350.1260) Other areas of optics : Astronomical optics

History
Original Manuscript: December 3, 2008
Revised Manuscript: December 29, 2008
Manuscript Accepted: December 30, 2008
Published: January 30, 2009

Virtual Issues
Focus Issue: Astrophotonics (2009) Optics Express

Citation
T. Kotani, S. Lacour, G. Perrin, G. Robertson, and P. Tuthill, "Pupil remapping for high contrast astronomy: results from an optical testbed," Opt. Express 17, 1925-1934 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-3-1925


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