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Hollow-core fibre discovery wins Best Student Paper at Advanced Photonics Congress

Date Announced: 09 Nov 2020

ORC student Shuichiro Rikimi wins Best Student Paper at Advanced Photonics Congress.

ORC, Southamptom, UK – Postgraduate research student Shuichiro Rikimi from the Optoelectronics Research Centre (ORC) has drawn praise at The Optical Society's Advanced Photonics Congress for identifying how post-fabrication treatment could extend the lifespan of hollow-core optical fibers.

The novel research in Southampton's Zepler Institute for Photonics and Nanoelectronics discovered that the internal pressure of a hollow-core post-fabrication is significantly below atmospheric pressure, causing air to rush into the freshly drawn fiber.

Further work will determine how gas species from ambient air, such as water vapor, could then interact with the multiple thin glass membranes in a hollow-core fiber and affect optical and mechanical performance as water molecules are known to do in current solid-core fibers.

The finding was awarded the congress's Best Student Paper prize and will now drive new research into further process developments to maximize their lifetime.

Shuichiro, from the ORC's Hollow Core Fibre (HCF) Group, says: "I am delighted that my work has been recognized by the research community. While the potential for hollow-core fibers in practical applications such as telecoms, gas sensing and high-power laser delivery has been demonstrated by several research groups, few systematic investigations related to the reliability of their performance have been reported.

Pressure difference

"In the work presented at the conference, we discovered that air will rush into the holes of a freshly fabricated hollow-core fibers due to the pressure difference. It is a quite surprising result because we do not apply a vacuum to the hollow-core during the fiber drawing process. One of our next steps will now be to study how the in-gassing molecules influence the long-term performance of this next generation fiber."

Ground-breaking research at the ORC is pushing new frontiers in this technology and recently demonstrated record-low 0.28 dB/km loss by antiresonant hollow-core optical fibers.  Shuichiro is supervised in his PhD at the ORC by Dr Natalie Wheeler and Dr Yong Chen.

"I really appreciate the support and guidance I have received from many members of the HCF group and the resources available at the ORC, including access to fibres and necessary equipment," he says. "I would also like to thank Lumenisity Ltd, who are an industrial sponsor of my PhD. I'm very grateful to be working together in this world-leading state-of-the-art group."


Optoelectronics Research Centre,
University of Southampton,
Highfield Campus,
SO17 1BJ
United Kingdom
Phone: +44 (0)23 8059 4521

E-mail: light@orc.soton.ac.uk

Web Site: www.orc.soton.ac.uk

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