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Proceedings Article

Combining up to eight telescope beams in a single chip

[+] Author Affiliations
Jean-Philippe Berger

Ecole Nationale Superieure d'Electronique et de Radioelectricite de Grenoble (USA)

Pierre Benech, 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)

Proc. SPIE 4006, Interferometry in Optical Astronomy, 986 (July 5, 2000); doi:10.1117/12.390177
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From Conference Volume 4006

  • Interferometry in Optical Astronomy
  • Pierre J. Lena; Andreas Quirrenbach
  • Munich, Germany | March 27, 2000

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.

© (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Jean-Philippe Berger ; Pierre Benech ; Isabelle Schanen-Duport ; Ghislaine Maury ; Fabien Malbet, et al.
"Combining up to eight telescope beams in a single chip", Proc. SPIE 4006, Interferometry in Optical Astronomy, 986 (July 5, 2000); doi:10.1117/12.390177; http://dx.doi.org/10.1117/12.390177


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