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Proceedings Paper

Modal analysis of beams emerging from a multi-core fiber using computer-generated holograms
Author(s): Christian Schulze; Oliver A. Schmidt; Daniel Flamm; Michael Duparré; Siegmund Schröter
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Paper Abstract

We investigate the beam emerging from a 3m-long passive large mode area multi-core fiber (MCF) at two different wavelengths to demonstrate the analysis of differently complex mode mixtures. Our method uses a computer-generated hologram (CGH) to modally decompose the beam exiting the fiber end facet. At 1064 nm the MCF is measured to be single-mode whereas at 633nm ten modes are guided. The excitation of distinct mode mixtures at 633nm is done by changing the input coupling situation enabled by a nano-positioning device. Furthermore it is demonstrated how bending of the fiber alters the modal spectrum.

Paper Details

Date Published: 10 February 2011
PDF: 9 pages
Proc. SPIE 7914, Fiber Lasers VIII: Technology, Systems, and Applications, 79142H (10 February 2011); doi: 10.1117/12.874732
Show Author Affiliations
Christian Schulze, Friedrich-Schiller-Univ. Jena (Germany)
Oliver A. Schmidt, Friedrich-Schiller-Univ. Jena (Germany)
Daniel Flamm, Friedrich-Schiller-Univ. Jena (Germany)
Michael Duparré, Friedrich-Schiller-Univ. Jena (Germany)
Siegmund Schröter, Institute for Photonic Technologies (Germany)

Published in SPIE Proceedings Vol. 7914:
Fiber Lasers VIII: Technology, Systems, and Applications
Jay W. Dawson, Editor(s)

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