All Solid Multistep-Index Core Large Mode Area Single-Mode Fiber
In this paper, a large-mode-area (LMA) single-mode fiber based on multistep-index core structure is proposed. The multistep-index core increases the mode field area (MFA). The trapezoidal refractive ring structure and the trench layer structure ensure the fiber maintains effective single-mode regime...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2025-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/11098657/ |
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| author | Yulai She Runyu Song Daiqi Hou Tiansheng Ling Jianping Ma |
| author_facet | Yulai She Runyu Song Daiqi Hou Tiansheng Ling Jianping Ma |
| author_sort | Yulai She |
| collection | DOAJ |
| description | In this paper, a large-mode-area (LMA) single-mode fiber based on multistep-index core structure is proposed. The multistep-index core increases the mode field area (MFA). The trapezoidal refractive ring structure and the trench layer structure ensure the fiber maintains effective single-mode regime. The structure is analyzed using the finite element method (FEM). Numerical results show that the proposed fiber is capable of maintaining effective single-mode regime at a bending radius of 10 cm. The MFA reaches 2578.136 μm<sup>2</sup> at the wavelength of 2.0 μm. The leakage loss (Loss) is 0.076 dB/m for fundamental mode (FM). The fiber structure also has the potential to develop LMA single-mode fiber with high performance at the wavelength of 1.55 μm. Furthermore, the circular symmetry of the fiber structure makes it insensitive to bending direction. These features indicate the proposed fiber has great potential in the application of the high-power laser system. |
| format | Article |
| id | doaj-art-370a47fb65024f8bbf805324c2bdf124 |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-370a47fb65024f8bbf805324c2bdf1242025-08-20T03:46:58ZengIEEEIEEE Photonics Journal1943-06552025-01-0117511010.1109/JPHOT.2025.359272511098657All Solid Multistep-Index Core Large Mode Area Single-Mode FiberYulai She0https://orcid.org/0000-0002-4547-0351Runyu Song1https://orcid.org/0009-0006-0385-0918Daiqi Hou2Tiansheng Ling3https://orcid.org/0000-0001-6266-5516Jianping Ma4Guangxi Key Laboratory of Manufacturing System & Advanced Manufacturing Technology, Guilin University of Electronic Technology, Guilin, ChinaGuangxi Key Laboratory of Manufacturing System & Advanced Manufacturing Technology, Guilin University of Electronic Technology, Guilin, ChinaGuangxi Key Laboratory of Manufacturing System & Advanced Manufacturing Technology, Guilin University of Electronic Technology, Guilin, ChinaGuangxi Key Laboratory of Manufacturing System & Advanced Manufacturing Technology, Guilin University of Electronic Technology, Guilin, ChinaGuangxi Key Laboratory of Manufacturing System & Advanced Manufacturing Technology, Guilin University of Electronic Technology, Guilin, ChinaIn this paper, a large-mode-area (LMA) single-mode fiber based on multistep-index core structure is proposed. The multistep-index core increases the mode field area (MFA). The trapezoidal refractive ring structure and the trench layer structure ensure the fiber maintains effective single-mode regime. The structure is analyzed using the finite element method (FEM). Numerical results show that the proposed fiber is capable of maintaining effective single-mode regime at a bending radius of 10 cm. The MFA reaches 2578.136 μm<sup>2</sup> at the wavelength of 2.0 μm. The leakage loss (Loss) is 0.076 dB/m for fundamental mode (FM). The fiber structure also has the potential to develop LMA single-mode fiber with high performance at the wavelength of 1.55 μm. Furthermore, the circular symmetry of the fiber structure makes it insensitive to bending direction. These features indicate the proposed fiber has great potential in the application of the high-power laser system.https://ieeexplore.ieee.org/document/11098657/All-solid-fibereffective mode areafinite element method (FEM)large mode area fibersingle mode operation |
| spellingShingle | Yulai She Runyu Song Daiqi Hou Tiansheng Ling Jianping Ma All Solid Multistep-Index Core Large Mode Area Single-Mode Fiber IEEE Photonics Journal All-solid-fiber effective mode area finite element method (FEM) large mode area fiber single mode operation |
| title | All Solid Multistep-Index Core Large Mode Area Single-Mode Fiber |
| title_full | All Solid Multistep-Index Core Large Mode Area Single-Mode Fiber |
| title_fullStr | All Solid Multistep-Index Core Large Mode Area Single-Mode Fiber |
| title_full_unstemmed | All Solid Multistep-Index Core Large Mode Area Single-Mode Fiber |
| title_short | All Solid Multistep-Index Core Large Mode Area Single-Mode Fiber |
| title_sort | all solid multistep index core large mode area single mode fiber |
| topic | All-solid-fiber effective mode area finite element method (FEM) large mode area fiber single mode operation |
| url | https://ieeexplore.ieee.org/document/11098657/ |
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