Comparison of two modal decomposition techniques

Robert Brüning; Daniel Flamm; Christian Schulze; Oliver A. Schmidt; Michael Duparré

doi:10.1117/12.908257

6 February 2012 Comparison of two modal decomposition techniques

Robert Brüning, Daniel Flamm, Christian Schulze, Oliver A. Schmidt, Michael Duparré

Proceedings Volume 8236, Laser Resonators, Microresonators, and Beam Control XIV; 82360I (2012) https://doi.org/10.1117/12.908257
Event: SPIE LASE, 2012, San Francisco, California, United States

Abstract

Higher oder modes in multi mode fibers determine fundamental beam properties. Hence, the knowledge about the modal content becomes essential to understand the underlying physical effects. Therefore, different modal decomposition techniques have been developed. In this paper we present a comparison of two methods. At first the modal decomposition by a correlation filter method (CFM) and secondly using a numerical phase retrieval algorithm. Limitations of both techniques are demonstrated and theirs overcoming by combining both is presented.

Citation Download Citation

Robert Brüning, Daniel Flamm, Christian Schulze, Oliver A. Schmidt, and Michael Duparré "Comparison of two modal decomposition techniques", Proc. SPIE 8236, Laser Resonators, Microresonators, and Beam Control XIV, 82360I (6 February 2012); https://doi.org/10.1117/12.908257

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