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Proceedings Paper

Development of silver-halide single-mode fibers for modal filtering in the mid-infrared
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Paper Abstract

Modal filtering is mandatory in nulling interferometers dedicated to direct detection of extrasolar terrestrial planets. However, up to date no appropriate waveguides to act as wavefront filter were available for the mid-infrared wavelengths in question. We present the development of silver-halide fibers and chalcogenide fibers to be used for modal filtering within the European DARWIN mission. We give a trade-off of suitable waveguides geometries, possible materials, and fabrication technologies and present measurements of the beam profiles, the insertion loss, and of the modal filtering capability of the developed fiber samples.

Paper Details

Date Published: 20 October 2004
PDF: 11 pages
Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); doi: 10.1117/12.551609
Show Author Affiliations
Oswald Wallner, Technische Univ. Wien (Austria)
Viatcheslav G. Artjuschenko, ART-Photonics GmbH (Germany)
Reinhold Flatscher, EADS Astrium GmbH (Germany)

Published in SPIE Proceedings Vol. 5491:
New Frontiers in Stellar Interferometry
Wesley A. Traub, Editor(s)

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