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Corning has ignored my requests for a dev kit, but hopefully the purchasing power of Inventables can speak with a louder voice:
Also I’d be interested in unterminated bulk lengths of the material, and a bunch of other stuff, let me know if there’s interest in pursuing this and I’ll post my whole braindump about the possibilities and questions.
Looks like it. The ones that I use are laser-engraved to reflect light out at certain angles. This looks complete. It says they are glass, though. Maybe a marketing term. No response yet from them.
It’s glass, the datasheets call out a 170-micron core diameter, 230 micron cladding, 900-micron jacket.
The effect is from deliberately-introduced “scattering sights” [sites], within the core. Their density can be controlled at manufacture, to control the magnitude of scattering per unit length. There’s no mention of the degree of back-scattering but I imagine this stuff must look hilarious/hellacious on an OTDR.
All the samples and documents talk about feeding the external light source from one end only, but I have a feeling that more even illumination could be achieved, where it’s practical, by feeding it from both ends. If I can get my hands on a sample I plan to try reconnectorizing the blunt end; I think it should work with normal OM1 connectors.
I can also envision situations where the light source might not be near the start of the Fibrance segment; I believe cheap 62.5-micron multimode fiber should couple efficiently into the Fibrance’s thicker core, but I can’t get Corning to confirm this. (Notably, coupling back out of the Fibrance material would not be very good, owing to the diameter mismatch.)
Mostly I want to get my hands on bulk lengths so I can try braided and twisted constructions, particularly for sequenced effects. We’ve all seen the 3-strand “flowing” EL wire, and I think that effect would look even cooler with thinner material.
(in slightly related news, i3detroit’s department of whackass experiments is accepting donations of tunable laser sources…)
Since we’re talking fiberoptic stuff, you have any use for some Buelher Fibramet PSA disks or mylar-backed sheet? I came across a cache of the stuff a while back, and I’ve got a heap larger than I can use in quite a long time. Most likely, more than I can use in a lifetime or two. lol