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

Changgeng Ye; Joona Koponen; Ville Aallos; Laeticia Petit; Ossi Kimmelma; Teemu Kokki

doi:10.1117/12.2038575

7 March 2014 Mode coupling in few-mode large-mode-area fibers

Changgeng Ye, Joona Koponen, Ville Aallos, Laeticia Petit, Ossi Kimmelma, Teemu Kokki

Proceedings Volume 8961, Fiber Lasers XI: Technology, Systems, and Applications; 89612W (2014) https://doi.org/10.1117/12.2038575
Event: SPIE LASE, 2014, San Francisco, California, United States

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.

Citation Download Citation

Changgeng Ye, Joona Koponen, Ville Aallos, Laeticia Petit, Ossi Kimmelma, and Teemu Kokki "Mode coupling in few-mode large-mode-area fibers", Proc. SPIE 8961, Fiber Lasers XI: Technology, Systems, and Applications, 89612W (7 March 2014); https://doi.org/10.1117/12.2038575

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