Near field modal noise reduction using annealed optical fiber

Steven N. Osterman; Gabriel G. Ycas; Chelsea Donaldson; Scott A. Diddams; Suvrath Mahadevan; Lawrence W. Ramsey; Peter P. Plavchan

doi:10.1117/12.2058416

24 July 2014 Near field modal noise reduction using annealed optical fiber

Steven N. Osterman, Gabriel G. Ycas, Chelsea Donaldson, Scott A. Diddams, Suvrath Mahadevan, Lawrence W. Ramsey, Peter P. Plavchan

Author Affiliations +

Proceedings Volume 9147, Ground-based and Airborne Instrumentation for Astronomy V; 91475C (2014) https://doi.org/10.1117/12.2058416
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

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.

Citation Download Citation

Steven N. Osterman, Gabriel G. Ycas, Chelsea Donaldson, Scott A. Diddams, Suvrath Mahadevan, Lawrence W. Ramsey, and Peter P. Plavchan "Near field modal noise reduction using annealed optical fiber", Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91475C (24 July 2014); https://doi.org/10.1117/12.2058416

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