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Influence of bending diameter on output capability of multimode fiber laser

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Abstract

The output capability of large mode area (LMA) multimode fiber laser depends on the fiber bending. To study the relationship, the output capability of multimode fiber laser was measured under various bending diameters, and it was also theoretically calculated. Measured respectively were the beam quality factor M 2, by means of knife edge for the different bending diameters of LMA fiber, and the slope efficiency. When the bending diameters 285, 195 and 130 mm were used, the corresponding beam quality factors were 2.88, 1.82 and 1.67 with the slope efficiency at 39%, 35% and 34%, respectively. In addition, for the LMA multimode fiber used in the experiment, losses of different modes were calculated theoretically under various bending diameters. The experimental results correspond to the calculated results.

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Authors and Affiliations

  1. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, China

    Libo Li, Qihong Lou, Jun Zhou, Jingxing Dong & Yunrong Wei

  2. Graduate University of Chinese Academy of Sciences, Beijing, 100039, China

    Libo Li

  3. FiberHome Telecommunication Tech Co Ltd, Wuhan, 430074, China

    Jinyan Li

Authors
  1. Libo Li
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  2. Qihong Lou
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  3. Jun Zhou
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  4. Jingxing Dong
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  5. Yunrong Wei
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  6. Jinyan Li
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Correspondence to Libo Li.

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Translated from Chinese Journal of Lasers, 2007, 34(3): 323–326 [译自: 中国激光]

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Li, L., Lou, Q., Zhou, J. et al. Influence of bending diameter on output capability of multimode fiber laser. Front. Optoelectron. China 1, 91–94 (2008). https://doi.org/10.1007/s12200-008-0002-8

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