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Proceedings Paper

Selective higher order fiber mode excitation using a monolithic setup of a phase plate at a fiber facet
Author(s): Johannes Wilde; Christian Schulze; Robert Brüning; Michael Duparré; Siegmund Schröter
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Paper Abstract

Controlling the modal content coupled into an optical fiber can be desirable in many situations, e.g. for adjusting the sensitivity of the guided field distribution to external perturbations1. For this purpose we used a monolithic setup of a phase plate at a fiber input facet to excite selectively higher order modes, which theoretically can provide a mode purity of more than 99%. We investigated the capabilities of this approach by complete modal decomposition of the fiber output signals, considering the achievable mode purity with respect to several possible imperfections of the setup. The experiments are compared with detailed numerical simulations and show a high agreement. Additionally a comparison with a well known setup with free space phase plates2–4 was undertaken. This showed the monolithic setup to be energetically twice as efficient.

Paper Details

Date Published: 3 March 2015
PDF: 11 pages
Proc. SPIE 9343, Laser Resonators, Microresonators, and Beam Control XVII, 93431P (3 March 2015); doi: 10.1117/12.2078933
Show Author Affiliations
Johannes Wilde, Friedrich-Schiller-Univ. Jena (Germany)
Christian Schulze, Friedrich-Schiller-Univ. Jena (Germany)
Robert Brüning, Friedrich-Schiller-Univ. Jena (Germany)
Michael Duparré, Friedrich-Schiller-Univ. Jena (Germany)
Siegmund Schröter, Leibniz Institute for Photonic Technology Jena (Germany)

Published in SPIE Proceedings Vol. 9343:
Laser Resonators, Microresonators, and Beam Control XVII
Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko; Lutz Aschke; Kunihiko Washio, Editor(s)

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