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Proceedings Paper

Multimode to single-mode converters: new results on 1-to-61 photonic lanterns
Author(s): J.-C. Olaya; K. Ehrlich; D. M. Haynes; R. Haynes; S. G. Leon-Saval; D. Schirdewahn
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Paper Abstract

Photonic Lanterns are a fibre-based component performing the adiabatic conversion from a multimode fibre to a series of single-mode fibres. This conversion is required for combining fibre-based instruments used in astronomy with complex photonic functions. As any fibre-based system, the optical properties of the Photonic Lanterns need to be fully evaluated. In this paper, we present results on the performance of a 1-to-61 Photonic Lantern in terms of spectral transmission and modal noise characteristics. Firstly, we compare the spectra obtained at the output of two photonic lanterns spliced together in multimode-to-multimode configuration with spectra obtained when transmitting light through step-index single-mode and multimode fibres. We then show that the photonic lantern is generating less modal noise than a step-index multimode fibre of same core diameter, when it is submitted to bending and stretching, and we propose an interpretation of this result based on static mode scrambling performance and single-mode behavior.

Paper Details

Date Published: 13 September 2012
PDF: 15 pages
Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 84503K (13 September 2012); doi: 10.1117/12.925161
Show Author Affiliations
J.-C. Olaya, Leibniz-Institut für Astrophysik Potsdam (Germany)
K. Ehrlich, Leibniz-Institut für Astrophysik Potsdam (Germany)
D. M. Haynes, Leibniz-Institut für Astrophysik Potsdam (Germany)
R. Haynes, Leibniz-Institut für Astrophysik Potsdam (Germany)
S. G. Leon-Saval, The Univ. of Sydney (Australia)
D. Schirdewahn, Leibniz-Institut für Astrophysik Potsdam (Germany)

Published in SPIE Proceedings Vol. 8450:
Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II
Ramón Navarro; Colin R. Cunningham; Eric Prieto, Editor(s)

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