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

doi:10.1117/12.874732

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

Proceedings Volume 7914, Fiber Lasers VIII: Technology, Systems, and Applications; 79142H (2011) https://doi.org/10.1117/12.874732
Event: SPIE LASE, 2011, San Francisco, California, United States

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.

Citation Download Citation

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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