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PLoS One. 2018 Aug 30;13(8):e0203047. doi: 10.1371/journal.pone.0203047. eCollection 2018.

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

Author information

1
Key Lab of All Optical Network & Advanced Telecommunication Network of EMC, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing, China.
2
College of Physics and Engineering, Qufu Normal University, Qufu, China.

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.

PMID:
30161209
PMCID:
PMC6116992
DOI:
10.1371/journal.pone.0203047
[Indexed for MEDLINE]
Free PMC Article

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