Journal
OPTICS EXPRESS
Volume 27, Issue 15, Pages 20567-20582Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.27.020567
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Funding
- Royal Academy of Engineering research fellowship
- Royal Society university research fellowship
- European Research Council program LightPipe [682724]
- UK Engineering and Physical Sciences Research Council [EP/N00762X/1, EP/P030181/1]
- EPSRC [EP/N00762X/1, EP/P030181/1, EP/H02607X/1] Funding Source: UKRI
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The fabrication of hollow core microstructured fibers is significantly more complex than solid fibers due to the necessity to control the hollow microstructure with high precision during the draw. We present the first model that can recreate tubular anti-resonant hollow core fiber draws, and accurately predict the draw parameters and geometry of the fiber. The model was validated against two different experimental fiber draws and very good agreement was found. We identify a dynamic within the draw process that can lead to a premature and irreversible contact between neighboring capillaries inside the hot zone, and describe mitigating strategies. We then use the model to explore the tolerance of the draw process to unavoidable structural variations within the preform, and to study feasibility and limiting phenomena of increasing the produced yield. We discover that the aspect ratio of the capillaries used in the preform has a direct effect on the uniformity of drawn fibers. Starting from high precision preforms the model predicts that it could be possible to draw 100 km of fiber from a single meter of preform. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.
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