New paper 📝! In deep-UV AR-HCFs we found a reversible attenuation effect... like solarization, but temporary. We call it “pseudo-solarization.” doi.org/10.1364/OE.5... #research #photonics

🎉New paper! doi.org/10.1364/OE.5... 📝
We look at how different numbers of capillaries affect the guidance properties of hollow core fibres, enabling the guidance of ~ 50 modes in the near-infrared. Some cool fibres in here that guide the visible and ultraviolet #science #optics #photonics

Ran 10k this weekend with my sisters in memory of our Nan💙
Was special (and chaotic) doing it together — one sister ran with a broken elbow, the other with a broken toe 😅 We’ve raised £1.5k for the hospice. We’re really grateful for all the donations, thanks!
👉 fundraising.pwh.org.uk/fundraising/...

The @uniofbath.bsky.social Optical Fibres group is hiring! They are looking for a Professor and two Lecturers to join. If bespoke optical fibres could benefit your research, this is an opportunity. More info: www.bath.ac.uk/research-gro...

Traditional multi-mode #optical fibres are straightforward, but the same is difficult to achieve in hollow core fibres. We report anti-resonant hollow core optical fibres guiding at least 50 spatial modes in the infrared (~5-fold improvement ). #science #photonics #research
arxiv.org/abs/2501.12996

Presenting 'u-Care #wrapped' for our last '24 meeting! 🎁🎶 Hope they're Spotify fans 😂
🟣 #UV #opticalfibre to 190 nm doi.org/10.1364/OE.5...
🔅 #deep-UV gen. in a hollow core fibre (HCF) doi.org/10.1364/OL.5...
🟢 UVA absorption in HCF doi.org/10.1364/OE.5...
🔬Multi-core HCF doi.org/10.1364/OL.5...

Hi all! Lots of new activity here, so I will introduce myself! I'm a UK early career researcher in photonics. I
🔹 Fabricate novel optical fibres
🔹 Post-process them to create advanced devices
💡 Focused on UV hollow-core fibres & applications in healthcare.
I use bsky to post about my research 🔬

New paper on multi-core hollow-core fibres! 🎉 We show a fibre with low inter-core coupling, achieving optical losses as low as 0.03 dB/m (620 nm) & 0.08 dB/m (1000 nm). Also Robbie’s 2nd first-author paper of his PhD! arxiv.org/abs/2409.14555 #photonics #fiberoptics #research

Exciting week for our PhD student Robbie Mears at #FiO in Denver! 📢He’s presenting 3 of 5 talks in the "Fiber Optics and Optical Communications Photonics" session, covering multi-core & multi-mode hollow-core fibers. 📜Papers coming soon! #Optics #Photonics #UV #Ucare #science

Our #opticalfiber guides most of the UV. Most excitingly, it reaches the shortest wavelength we can test without purging (air is a problem towards 180 nm). For a fibre of these long lengths, this is brand new! We hope this work will enable many transformative UV technologies

Despite this challenge, we managed to fabricate beautiful, long lengths of #DUV guiding optical fibre, important for our
@uCare_EPSRC collaborators who wish to precisely guide #deepUV light for transformative healthcare technologies.

HCFs for UV need to have VERY thin glass structures, which makes them difficult to fabricate. We are essentially making very long glass bubbles in a 2000degree furnace, and hoping to make perfect, symmetrical tubular walls of a few 100 #nanometers thick! It is a challenge!

ormal optical fibres (with glass in the core) are limited at short #UV wavelengths, as they have high attenuation and also darken with exposure over time. #HollowCoreFibers (HCF), being hollow in the core, do not have this problem, as shown in graph from prev UV HCF Bath paper:

Our #DeepUltraviolet hollow core optical fiber paper is finally published! doi.org/10.1364/OE.5...
@Robbie_Mears98
first 1st author paper too !! Below is a thread with a summary breakdown of the important #science in the paper…