Paper
26 February 2013 Mode coupling in large-diameter multi-mode silica optical fibers
Changgeng Ye, Joona Koponen, Ville Aallos, Teemu Kokki
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Abstract
We report an experimental study on mode coupling in various large-diameter multi-mode silica optical fibers. The evolution of the far-field angular power distribution is experimentally measured, and the mode coupling characteristics are studied on a variety of fibers with diverse parameters, including core/cladding diameter (50-400μm/125-480μm), length (few to hundreds of meters), NA (0.15-0.46), etc. The influences of fiber geometry, bending are discussed. This study could provide practical guidance in designing power delivery fibers for high-power diode, solid-state and fiber lasers to preserve the input brightness and beam quality.
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Changgeng Ye, Joona Koponen, Ville Aallos, and Teemu Kokki "Mode coupling in large-diameter multi-mode silica optical fibers", Proc. SPIE 8601, Fiber Lasers X: Technology, Systems, and Applications, 86012B (26 February 2013); https://doi.org/10.1117/12.2002819
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KEYWORDS
Optical fibers

Fiber lasers

Silica

Cladding

Semiconductor lasers

Solid state lasers

Diodes

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