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Proceedings Paper

Combining up to eight telescope beams in a single chip
Author(s): Jean-Philippe Berger; Pierre Benech; Isabelle Schanen-Duport; Ghislaine Maury; Fabien Malbet; Francois Reynaud
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Paper Abstract

In this paper we show that integrated optics offer a very simple and low cost way to combine up to eight beams of an interferometric optical array. These beam combiners will allow accurate visibilities and phase closure terms measurements, and provide consequently, high quality information for astronomical image reconstruction. We present optical designs for two different chips. Using previous laboratory experiments we extrapolate the performances, constraints and limits of different beam combination concepts. In particular spatial encoding and temporal encoding of `all-in-one' schemes are compared and their main properties are evaluated.

Paper Details

Date Published: 5 July 2000
PDF: 10 pages
Proc. SPIE 4006, Interferometry in Optical Astronomy, (5 July 2000); doi: 10.1117/12.390177
Show Author Affiliations
Jean-Philippe Berger, Ecole Nationale Superieure d'Electronique et de Radioelectricite de Grenoble (United States)
Pierre Benech, Ecole Nationale Superieure d'Electronique et de Radioelectricite de Grenoble (France)
Isabelle Schanen-Duport, Ecole Nationale Superieure d'Electronique et de Radioelectricite de Grenoble (France)
Ghislaine Maury, Lab. d'Electromagnetisme Microondes et Optoelectronique (France)
Fabien Malbet, Observatoire de Grenoble (France)
Francois Reynaud, Institut de Recherche en Communications Optiques et Microondes (France)


Published in SPIE Proceedings Vol. 4006:
Interferometry in Optical Astronomy
Pierre J. Lena; Andreas Quirrenbach, Editor(s)

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