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Proceedings Paper • Open Access

Single-mode waveguides in thermal infrared wavelengths for spatial interferometry
Author(s): Emmanuel Laurent; Isabelle Shanen; Pierre Kern; Annie Pradel; Assia Aggad

Paper Abstract

Integrated optics, applied to astronomical interferometry, bring several decisive benefits compared to bulk optics : mechanical and thermal stability, small size, facility to realize combiners for many telescopes. At this time, numerous compoments were dezigned, realized and tested for stellar interferometry applications. Laboratory characterization in the VIS/NIR wavelengths confirm the expected capabilities and performances.

At thermal infrared wavelengths, the concept of integrated optics is of great interest for spatial instrumentations and particulary for the Darwin/IRSI mission. The aim of the mission, launched in 2012−2015, is the detection and the spectroscopic study of extrasolar planets. Our long term goal is the development of monomode integrated optic components for thermal infrared wavelengths. In the near futur, we are interested by the conception and the realization of single mode straight waveguide for using in modal filtering.

In this paper, we present the conception of first thermal waveguide and their characterizations. Around different solutions, we focused our attention on the utilization of chalcogenide glasses because of its wide transmission window, from 1 to 20 microns depending of the material composition, and of the potentially low propagation losses.

Paper Details

Date Published: 21 November 2017
PDF: 10 pages
Proc. SPIE 10569, International Conference on Space Optics — ICSO 2000, 105691K (21 November 2017); doi: 10.1117/12.2307926
Show Author Affiliations
Emmanuel Laurent, Lab. d’Astrophysique de l’Observatoire de Grenoble (France)
Lab. d’Electromagnétisme Microondes et Optoélectronique (France)
Isabelle Shanen, Lab. d’Electromagnétisme Microondes et Optoélectronique (France)
Pierre Kern, Lab. d’Astrophysique de l’Observatoire de Grenoble (France)
Annie Pradel, Lab. de Physicochimie de la Matière Condensée (France)
Assia Aggad, Lab. de Physicochimie de la Matière Condensée (France)


Published in SPIE Proceedings Vol. 10569:
International Conference on Space Optics — ICSO 2000
Georges Otrio, Editor(s)

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