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Mode coupling in few-mode large-mode-area fibers

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


Original languageEnglish
Title of host publicationFiber Lasers XI: Technology, Systems, and Applications
ISBN (Print)9780819498748
Publication statusPublished - 2014
Publication typeA4 Article in a conference publication
EventFiber Lasers XI: Technology, Systems, and Applications - San Francisco, CA, United States
Duration: 3 Feb 20146 Feb 2014


ConferenceFiber Lasers XI: Technology, Systems, and Applications
CountryUnited States
CitySan Francisco, CA


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.


  • Beam quality, Few-mode, Large-mode-area fiber, Mode coupling, Mode decomposition, Silica optical fiber