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Proceedings Paper

Three-dimensional photonic combiner for optical astro interferometry
Author(s): Stefano Minardi; Thomas Pertsch; Ralph Neuhaeuser
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Paper Abstract

We put forward an innovative scheme allowing multiple beam combination and closure-phase retrieval by means of a three dimensional array of coupled optical waveguides. Light propagation in an array of evanescently coupled waveguides is similar to conventional diffraction, however it is bound to a system with finite degrees of freedom. We have demonstrated that the latter feature allows relating uniquely the intensity pattern at the end of a 3x3 waveguide array to the amplitude and relative phases of three monochromatic fields coupled to suitable input waveguides. The method is scalable to arbitrary large arrays of telescopes and baselines.

Paper Details

Date Published: 21 July 2010
PDF: 7 pages
Proc. SPIE 7734, Optical and Infrared Interferometry II, 77343P (21 July 2010); doi: 10.1117/12.856446
Show Author Affiliations
Stefano Minardi, Friedrich-Schiller-Univ. Jena (Germany)
Thomas Pertsch, Friedrich-Schiller-Univ. Jena (Germany)
Ralph Neuhaeuser, Friedrich-Schiller-Univ. Jena (Germany)

Published in SPIE Proceedings Vol. 7734:
Optical and Infrared Interferometry II
William C. Danchi; Françoise Delplancke; Jayadev K. Rajagopal, Editor(s)

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