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

Oswald Wallner; Viatcheslav G. Artjuschenko; Reinhold Flatscher

doi:10.1117/12.551609

20 October 2004 Development of silver-halide single-mode fibers for modal filtering in the mid-infrared

Oswald Wallner, Viatcheslav G. Artjuschenko, Reinhold Flatscher

Proceedings Volume 5491, New Frontiers in Stellar Interferometry; (2004) https://doi.org/10.1117/12.551609
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

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.

Citation Download Citation

Oswald Wallner, Viatcheslav G. Artjuschenko, and Reinhold Flatscher "Development of silver-halide single-mode fibers for modal filtering in the mid-infrared", Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); https://doi.org/10.1117/12.551609

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