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

被引：1
|
作者：
Ye, Changgeng [1 ]
Koponen, Joona [1 ]
Aallos, Ville [1 ]
Petit, Laeticia [1 ]
Kimmelma, Ossi [1 ]
Kokki, Teemu [1 ]
机构：
[1] NLIGHT Corp, Lohja 08500, Finland
来源：
FIBER LASERS XI: TECHNOLOGY, SYSTEMS, AND APPLICATIONS | 2014年 / 8961卷
关键词：
mode coupling; few-mode; large-mode-area fiber; silica optical fiber; beam quality; mode decomposition; DECOMPOSITION;
D O I：
10.1117/12.2038575
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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 near-field 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.
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页数：7
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