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20 June 2024 Non-destructive real-time characterization of anti-resonant hollow-core fibres using Fabry-Pérot interferometry
Michael H. Frosz, Michael Bergler, Patrick Uebel
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Proceedings Volume PC13001, Specialty Optical Fibres VIII; PC1300107 (2024) https://doi.org/10.1117/12.3014998
Event: SPIE Photonics Europe, 2024, Strasbourg, France
Abstract
The diameters of the microscopic anti-resonant (AR) elements inside AR hollow-core fibres can be non-destructively measured in real-time during fibre drawing using interference measurements of light scattered from the side of the fibre, but suffers from measurement deviations as the fibre rotates, as well as other disadvantages. We demonstrate an improved measurement principle based on Fabry-Pérot interference, which also allows direct measurement of the wall-thickness of the AR cladding elements. The method is therefore more robust, and provides more information during fibre drawing than previously possible.
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Michael H. Frosz, Michael Bergler, and Patrick Uebel "Non-destructive real-time characterization of anti-resonant hollow-core fibres using Fabry-Pérot interferometry", Proc. SPIE PC13001, Specialty Optical Fibres VIII, PC1300107 (20 June 2024); https://doi.org/10.1117/12.3014998
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KEYWORDS
Fabry–Perot interferometry
Nondestructive evaluation
Cladding
Geometrical optics
Light sources
Quality control
Simulations
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