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View article: Transient gas-induced differential refractive index effects in as-drawn hollow core optical fibers
Transient gas-induced differential refractive index effects in as-drawn hollow core optical fibers Open
When a hollow core fiber is drawn, the core and cladding holes within the internal cane geometry are pressurized with an inert gas to enable precise control over the internal microstructure of the fiber and counteract surface tension force…
View article: Transient differential pressure-induced loss variation in as-drawn hollow core optical fibres
Transient differential pressure-induced loss variation in as-drawn hollow core optical fibres Open
We demonstrate transient changes in the optical properties, specifically the loss, of antiresonant hollow core fibres (HCFs) due to a combination of the sub-atmospheric gas pressure inside the fibre holes post-fabrication and the subsequen…
View article: Long-term behaviour of water vapour absorption in hollow core fibres
Long-term behaviour of water vapour absorption in hollow core fibres Open
We report on the long-term behaviour of water vapour absorption in 19 cell HC-PBGFs in open and spliced conditions. Two main trends were observed as a function of time: increase in absorption of water vapour after opening sealed ends and r…