Paper
10 February 2011 Modal analysis of beams emerging from a multi-core fiber using computer-generated holograms
Christian Schulze, Oliver A. Schmidt, Daniel Flamm, Michael Duparré, Siegmund Schröter
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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.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Christian Schulze, Oliver A. Schmidt, Daniel Flamm, Michael Duparré, and Siegmund Schröter "Modal analysis of beams emerging from a multi-core fiber using computer-generated holograms", Proc. SPIE 7914, Fiber Lasers VIII: Technology, Systems, and Applications, 79142H (10 February 2011); https://doi.org/10.1117/12.874732
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CITATIONS
Cited by 6 scholarly publications.
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KEYWORDS
Computer generated holography

Fiber lasers

Near field

Modal analysis

Polarizers

Microscopes

Cladding

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