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A draw tower (left) was employed to make the final optical fiber (right).
The researchers used a 3D printing method known as direct-light projection (DLP) to make silica fiber preforms. They fabricated preforms for a a structured preform. These preforms were then placed in a draw tower (left) to make the final optical fiber (right). The orange inset shows a cross section of a step index fiber. Credit: John Canning, University of Technology in Sydney.
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