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Proceedings Paper

New scramblers for precision radial velocity: square and octagonal fibers
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Paper Abstract

One of the remaining limitation of the precise radial velocity instruments is the imperfect scrambling produced by the circular fibers. We present here experimental studies on new optical fibers aiming at an improvement of the scrambling they provide. New fibers shapes were tested: square and octagonal. Measurements have been performed of the scrambling performances of these fibers in the near field as well FRD measurements. These fibers show extremely promising performances in the near field scrambling: an improvement of a factor 5 to 10 compared to the circular fiber. They however show some strange behavior in the far field that need to be understood.

Paper Details

Date Published: 20 July 2010
PDF: 9 pages
Proc. SPIE 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation, 773947 (20 July 2010); doi: 10.1117/12.856874
Show Author Affiliations
Bruno Chazelas, Observatory of Geneva, Univ. of Geneva (Switzerland)
Francesco Pepe, Observatory of Geneva, Univ. of Geneva (Switzerland)
François Wildi, Observatory of Geneva, Univ. of Geneva (Switzerland)
Francois Bouchy, Institut d'Astrophysique de Paris, CNRS, Univ. Pierre & Marie Curie (France)
Observatoire de Haute-Provence, CNRS/OAMP, St. Michel l'Observatoire (France)
Sandrine Perruchot, Observatoire de Haute-Provence, CNRS/OAMP, St. Michel l'Observatoire (France)
Gerardo Avila, European Southern Observatory (Germany)


Published in SPIE Proceedings Vol. 7739:
Modern Technologies in Space- and Ground-based Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)

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