Recent advances in fabrication and applications of nanostructured soft-glass optical fibres

Jiang, Xin; Babic, Fehim; Huang, Jiapeng; Xie, Shangran; Wang, Z.; Sopalla, R.; Joly, Nicolas Y.; Russell, P. St. J.

doi:10.1364/sof.2018.som2h.2

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“…We have recently been investigating the use of soft-glass extrusion through 3D printed titanium dies as a method for fabricating microstructured optical fiber preforms [16]. This has great potential for fabricating highly complex optical fiber designs [17,18]. Importantly, we have shown that despite the surface roughness present in 3D printed dies, by simply polishing the exit of the 3D printed die, preforms can be extruded with optical quality surface finish [16].…”

Section: Introductionmentioning

confidence: 99%

Soft-glass imaging microstructured optical fibers

Warren‐Smith¹,

Dowler²,

Ebendorff-Heidepriem³

2018

Opt. Express

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We demonstrate the fabrication of multi-core (imaging) microstructured optical fiber via soft-glass preform extrusion through a 3D printed titanium die. The combination of extrusion through 3D printed dies and structured element (capillary) stacking allows for unprecedented control of the optical fiber geometry. We have exploited this to demonstrate a 100 pixel rectangular array imaging microstructured fiber. Due to the high refractive index of the glass used (n = 1.62), such a fiber can theoretically have a pixel pitch as small as 1.8 µm. This opens opportunities for ultra-small, high-resolution imaging fibers fabricated from diverse glass types.

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