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Proceedings Paper

Mode coupling in few-mode large-mode-area fibers
Author(s): Changgeng Ye; Joona Koponen; Ville Aallos; Laeticia Petit; Ossi Kimmelma; Teemu Kokki
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Paper Abstract

We present an experimental study on mode coupling characteristics of few-mode large-mode-area (LMA) fibers, which are widely used in high power fiber lasers. The modal power allocation is measured by modal decomposition of the nearfield intensity profile of the output beam. Cut-back measurements are carried out with commonly-used fibers with different fiber geometries. The evolution of the modal power content due to mode coupling is presented. The influence of the fiber geometry on mode coupling is discussed.

Paper Details

Date Published: 7 March 2014
PDF: 7 pages
Proc. SPIE 8961, Fiber Lasers XI: Technology, Systems, and Applications, 89612W (7 March 2014); doi: 10.1117/12.2038575
Show Author Affiliations
Changgeng Ye, nLIGHT Corp. (Finland)
Joona Koponen, nLIGHT Corp. (Finland)
Ville Aallos, nLIGHT Corp. (Finland)
Laeticia Petit, nLIGHT Corp. (Finland)
Ossi Kimmelma, nLIGHT Corp. (Finland)
Teemu Kokki, nLIGHT Corp. (Finland)

Published in SPIE Proceedings Vol. 8961:
Fiber Lasers XI: Technology, Systems, and Applications
Siddharth Ramachandran, Editor(s)

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