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Proceedings Paper

Optical fiber modal noise suppression in the NIR region using multicore fiber and photonic lanterns
Author(s): Dionne M. Haynes; Itandehui Gris-Sanchez; Tim A. Birks; Roger Haynes
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Paper Abstract

Modal noise has been shown to critically limit the signal-to-noise ratio achievable in fiber-coupled, high-resolution spectrographs. We are investigating new fiber technologies that can potentially solve the modal noise issues in the NIR region. The new technology that we present is a combination of a multicore fiber (MCF) and a photonic lantern (PL) specifically designed to provide highly efficient phase scrambling in the NIR with a low mode count. In this paper we give an overview of the specifications, design and manufacture of the multicore fiber and photonic lantern. We also present the initial modal noise test results for the MCF-PL and an octagonal multimode fiber for comparison.

Paper Details

Date Published: 10 July 2018
PDF: 10 pages
Proc. SPIE 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III, 1070665 (10 July 2018); doi: 10.1117/12.2314224
Show Author Affiliations
Dionne M. Haynes, Leibniz-Institut für Astrophysik Potsdam (Germany)
Itandehui Gris-Sanchez, Univ. of Bath (United Kingdom)
The Barcelona Institute of Science and Technology (Spain)
Tim A. Birks, Univ. of Bath (United Kingdom)
Roger Haynes, Leibniz-Institut für Astrophysik Potsdam (Germany)


Published in SPIE Proceedings Vol. 10706:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III
Ramón Navarro; Roland Geyl, Editor(s)

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