Optimal non-circular fiber geometries for image scrambling in high-resolution spectrographs

Julian Stürmer, Christian Schwab, Stephan Grimm, André Kalide, Adam P. Sutherland, Andreas Seifahrt, Kay Schuster, Jacob L. Bean, Andreas Quirrenbach

    Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

    7 Citations (Scopus)

    Abstract

    Optical fibers are a key component for high-resolution spectrographs to attain high precision in radial velocity measurements. We present a custom fiber with a novel core geometry - a 'D'-shape. From a theoretical standpoint, such a fiber should provide superior scrambling and modal noise mitigation, since unlike the commonly used circular and polygonal fiber cross sections, it shows chaotic scrambling. We report on the fabrication process of a test fiber and compare the optical properties, scrambling performance, and modal noise behaviour of the D-fiber with those of common polygonal fibers.

    Original languageEnglish
    Title of host publicationAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation II
    EditorsRaman Navarro, James H. Burge
    Place of PublicationBellingham, Washington
    PublisherSPIE
    Pages1-7
    Number of pages7
    ISBN (Electronic)9781510602045
    ISBN (Print)9781510602038
    DOIs
    Publication statusPublished - 2016
    EventAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation II - Edinburgh, United Kingdom
    Duration: 26 Jun 20161 Jul 2016

    Publication series

    NameProceedings of SPIE
    PublisherSPIE
    Volume9912
    ISSN (Print)0277-786X
    ISSN (Electronic)1996-756X

    Other

    OtherAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation II
    Country/TerritoryUnited Kingdom
    CityEdinburgh
    Period26/06/161/07/16

    Keywords

    • Dynamical billiards
    • Modal noise
    • Optical fibers
    • Radial velocity
    • Scrambling

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