Micromachining structured optical fibers using focused ion beam milling
C. Martelli, P. Olivero, J. Canning, N. Groothoff, B. Gibson, S., Huntington

TL;DR
This paper demonstrates the use of focused ion beam milling to precisely create side holes in air-silica structured optical fibers, enabling new fiber modifications.
Contribution
It introduces a novel application of focused ion beam milling for structuring optical fibers, which was not previously explored.
Findings
Successful milling of side holes in different fiber types
Precise control over hole dimensions and placement
Potential for advanced fiber design and customization
Abstract
A focused ion beam is used to mill side holes in air-silica structured fibres. By way of example, side holes are introduced in two types of air-structured fibres (1) a photonic crystal four-ring fibre and (2) a 6-hole single ring step index structured fibre.
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