Abstract
In this work, multi-mode anti-resonant hollow-core fiber (AR-HCF) with 18 fan-shaped resonators is fabricated and characterized. The ratio of core diameter over transmitted wavelengths in the lowest transmission band is up to 85. The measured attenuation at 1 µm wavelength is below 0.1 dB/m and the bend loss below 0.2 dB/m at a bend radius smaller than 8 cm. Modal content of the multi-mode AR-HCF is characterized using the S2 imaging technique and seven LP-like modes in total are identified using a 23.6 meter fiber length. Multi-mode AR-HCFs for longer wavelengths are fabricated by scaling up the same design, extending the transmission window beyond 4 µm wavelength. Low-loss multi-mode AR-HCF could find applications in the delivery of high-power laser light with a medium beam quality, where higher coupling efficiency and laser damage threshold are expected.
| Original language | English |
|---|---|
| Pages (from-to) | 21870-21880 |
| Number of pages | 11 |
| Journal | Optics Express |
| Volume | 31 |
| Issue number | 13 |
| Early online date | 13 Jun 2023 |
| DOIs | |
| Publication status | Published - 19 Jun 2023 |
Bibliographical note
Funding Information:Funding. STI2030-Major Projects (2022ZD0212100); the Open Fund of the Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology; Chinese Academy of Sciences (ZDBS-LY JSC020); National Natural Science Foundation of China (61935002, 62075200, 62127815); National Key Research and Development Program of China (2020YFB1312802).
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics