Bend-resistant leaky multi-trench fiber with large mode area and single-mode operation

Shaoshuo Ma, Tigang Ning, Li Pei, Jing Li, Jingjing Zheng, Xueqing He and Xiaodong Wen

PLOS ONE, 2018, vol. 13, issue 8, 1-18

Abstract: A novel structure of modified multi-trench fiber (MTF) with characteristics of bend-resistance and large mode-area is proposed. In this structure, each low refractive-index trench of traditional MTF is broken by two gaps up and down. Numerical investigations show that the mode field area of 840 μm2 can be achieved with effective single-mode (SM) operation when the bending radius is 15 cm. Moreover, the high order mode (HOM) suppression of the proposed design is better than that of standard MTF. The SM operation property can be enhanced with the decreases of bending radius. The proposed design shows great potential in high power fiber lasers with compact structure.

Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0203047

DOI: 10.1371/journal.pone.0203047

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