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Proceedings Paper

Characterization of silver halide fiber for modal filtering on mid-infrared: imaging, nulling, and spectral transmission
Author(s): R. Grille; L. Labadie; P. Kern; G. Martin; B. Arezki
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Paper Abstract

One of the critical issues for nulling interferometry breadboards for exo-earth detection relies on the possibility to manufacture and properly characterize optical waveguides that present suitable single mode behaviors in the foreseen spectral range (4-20 μm). We developed a dedicated bench for the characterization of available guides for the considered spectral range, in particulary silver halide fibers. This interferometric bench achieves modal characterization in nulling mode and spectral transmission in Fourier Transform spectrometer mode, defining the single mode domain of the components. We present the experimental setup and its performances. We present also some characterization of their single-mode behavior according to the injection conditions. These measurements are very useful for the conception of optimized components.

Paper Details

Date Published: 28 July 2008
PDF: 7 pages
Proc. SPIE 7013, Optical and Infrared Interferometry, 70133Q (28 July 2008); doi: 10.1117/12.789578
Show Author Affiliations
R. Grille, Lab. d'Astrophysique de Grenoble, CNRS, Univ. Joseph Fourier (France)
L. Labadie, Max-Planck-Institut für Astronomie (Germany)
P. Kern, Lab. d'Astrophysique de Grenoble, CNRS, Univ. Joseph Fourier (France)
G. Martin, Lab. d'Astrophysique de Grenoble, CNRS, Univ. Joseph Fourier (France)
B. Arezki, Lab. d'Astrophysique de Grenoble, CNRS, Univ. Joseph Fourier (France)


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

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