Fabrication of microchannels in a nodeless antiresonant hollow-core fiber using femtosecond laser pulses

Paweł Kozioł, Piotr Jaworski, Karol Krzempek, Viktoria Hoppe, Grzegorz Dudzik, Fei Yu, Dakun Wu, Meisong Liao, Jonathan Knight, Krzysztof Abramski

Research output: Contribution to journalArticlepeer-review

4 Citations (SciVal)


In this work, we present femtosecond laser cutting of microchannels in a nodeless antiresonant hollow-core fiber (ARHCF). Due to its ability to guide light in an air core combined with exceptional light-guiding properties, an ARHCF with a relatively non-complex structure has a high application potential for laser-based gas detection. To improve the gas flow into the fiber core, a series of 250 × 30 µm microchannels were reproducibly fabricated in the outer cladding of the ARHCF directly above the gap between the cladding capillaries using a femtosecond laser. The execution time of a single lateral cut for optimal process parameters was 7 min. It has been experimentally shown that the implementation of 25 microchannels introduces low transmission losses of 0.17 dB (<0.01 dB per single microchannel). The flexibility of the process in terms of the length of the performed microchannel was experimentally demonstrated, which confirms the usefulness of the proposed method. Furthermore, the performed experiments have indicated that the maximum bending radius for the ARHCF, with the processed 100 µm long microchannel that did not introduce its breaking, is 15 cm.

Original languageEnglish
Article number7591
Issue number22
Early online date16 Nov 2021
Publication statusPublished - 30 Nov 2021

Bibliographical note

Funding Information:
Funding: This research was funded by the National Science Centre (NCN), grant number UMO-2018/30/Q/ST3/00809, the Polish National Agency for Academic Exchange, grant number PPI/APM/2018/1/00031/U/001, the National Natural Science Foundation of China (61935002, 61961136003), the Key Research Program of Frontier Sciences, Chinese Academy of Sciences (ZDBS-LY-JSC020) and the CAS Pioneer Hundred Talents Program; the Open Fund of the Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques (South China University of Technology). The laser source for the MIR range was supported by the Foundation for Polish Science within the First TEAM program co-financed by the European Union under the European Regional Development Fund (contract no. POIR.04.04.00-00-434D/17-00).


  • Antiresonant hollow core fibers
  • Femtosecond laser micromachining
  • Microchannel fabrication
  • Microstructured fibers

ASJC Scopus subject areas

  • Analytical Chemistry
  • Information Systems
  • Atomic and Molecular Physics, and Optics
  • Biochemistry
  • Instrumentation
  • Electrical and Electronic Engineering


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