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Proceedings Paper

Near field modal noise reduction using annealed optical fiber
Author(s): Steven N. Osterman; Gabriel G. Ycas; Chelsea Donaldson; Scott A. Diddams; Suvrath Mahadevan; Lawrence W. Ramsey; Peter P. Plavchan
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Paper Abstract

Incomplete and unstable mode population has long complicated the application of optical fiber for transferring star and calibration light to high precision spectrographs. The need for improved precision calibrators in support of radial velocity planet surveys has led to the introduction of coherent wavelengths sources using single mode fibers that are then coupled into multi-mode fibers, further exacerbating this problem. We explore mode scrambling in annealed optical fiber with and without agitation, as compared to that obtained using octagonal fiber and using an integrating sphere. We observe improved scrambling with annealed fibers compared to conventional and octagonal fibers.

Paper Details

Date Published: 24 July 2014
PDF: 6 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91475C (24 July 2014); doi: 10.1117/12.2058416
Show Author Affiliations
Steven N. Osterman, Johns Hopkins Univ. Applied Physics Lab. (United States)
Univ. of Colorado, Boulder (United States)
Gabriel G. Ycas, National Institute of Standards and Technology (United States)
Chelsea Donaldson, Southwest Research Institute (United States)
Scott A. Diddams, National Institute of Standards and Technology (United States)
Univ. of Colorado, Boulder (United States)
Suvrath Mahadevan, The Pennsylvania State Univ. (United States)
Lawrence W. Ramsey, The Pennsylvania State Univ. (United States)
Peter P. Plavchan, NASA Exoplanet Science Institute (United States)
Missouri State Univ. (United States)


Published in SPIE Proceedings Vol. 9147:
Ground-based and Airborne Instrumentation for Astronomy V
Suzanne K. Ramsay; Ian S. McLean; Hideki Takami, Editor(s)

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