Infrared single-mode hollow conductive waveguides for stellar interferometry

Details Infrared single-mode hollow conductive waveguides for stellar interferometry Infrared single-mode hollow conductive waveguides for stellar interferometry

Mar 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spie.6123..168l&link_type=abstract

Integrated Optics: Devices, Materials, and Technologies X. Edited by Sidorin, Yakov; Waechter, Christoph A. Proceedings of t

Physics

Optics

3

Scientific paper

This paper reports the design, realisation, and characterisation of singlemode hollow conductive waveguides for stellar interferometry. These waveguides are developed in the frame of technological developments for the ESA DARWIN mission, which aims at direct detection of exoplanets and biomarkers on them (proof of life) using nulling interferometry in the 6-20 μm spectral range. The use of singlemode waveguides is mandatory in order to meet DARWIN required performance by achieving a modal filtering better than 10-6. While there is ongoing developments of infrared dielectric fibers or integrated waveguides, both using chalcogenide glasses or silver halide compounds, this paper presents the first realisation and characterisation of singlemode hollow conductive waveguides in the DARWIN spectral range, by means of standard microelectronic and wafer bonding technologies.

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