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Proceedings Paper

Full integrated beam combiner instrument based on SWIFTS concept
Author(s): Pierre Kern; Etienne Le Coärer; Pierre Benech
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Paper Abstract

We present how photonics associated with new arising detection technologies is able to provide fully integrated instrument for interferometric beam combination. The feasibility and operation of on-chip beam combiners have been demonstrated now according to various combination schemes. More recently we have proposed a novel detection principle that allows to directly sample and extract the spectral information of the incoming optical signal together with the flux level measurement. The so-called SWIFTS concept that stands for Stationary-Wave Integrated Fourier Transform Spectrometer, is able to provide the full spectral and spatial information recorded simultaneously thanks to a motionless detecting device. Throughout the newly available detection principle that could be considered for SWIFTS implementation, some technologies are even able to provide photo-counting operation that may bring a significant extension of the astrophysical domain of investigation of interferometry. The proposed new concept is applicable either to a fringe tracker instrument with fast and sensitive capabilities, or to a dispersive instrument with high spectral resolution capabilities.

Paper Details

Date Published: 28 July 2008
PDF: 8 pages
Proc. SPIE 7013, Optical and Infrared Interferometry, 701315 (28 July 2008); doi: 10.1117/12.789511
Show Author Affiliations
Pierre Kern, Lab. d'Astrophysique de Grenoble, Univ. Joseph Fourier, CNRS (France)
Etienne Le Coärer, Lab. d'Astrophysique de Grenoble, Univ. Joseph Fourier, CNRS (France)
Pierre Benech, Institut de Microélectronique d'Electromagnétisme et de Photonique, INPG-UJF-CNRS (France)

Published in SPIE Proceedings Vol. 7013:
Optical and Infrared Interferometry
Markus Schöller; William C. Danchi; Françoise Delplancke, Editor(s)

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