How do you get internal reflectance with a hollow core?
Comment on They Need To Stop Doing This
sloppy_diffuser@sh.itjust.works 11 months agoIts a type of fiber optic cable where the center of the cable is literally hollow. Normal fiber uses a glass core. Light passing through glass also travels about 2/3 the speed of the light since the speed of light is only constant in an empty vacuum. With hollow core, light is no longer passing through glass so its speed is much closer to the actual speed of light.
Cort@lemmy.world 11 months ago
AffineConnection@lemmy.world 11 months ago
You can’t have total internal reflection within a hollow core, but that’s not how they function.
Cort@lemmy.world 11 months ago
That’s fair.
mindbleach@sh.itjust.works 11 months ago
… wait, how does that work? Total internal reflection happens at the boundary to a lower index of refraction.
sloppy_diffuser@sh.itjust.works 11 months ago
I don’t know the physics well enough, but here is some general information.
en.m.wikipedia.org/wiki/Photonic-crystal_fiber
www.rp-photonics.com/hollow_core_fibers.html
Croquette@sh.itjust.works 11 months ago
My dumb person guess is that it needs to be in a perfectly straight line.
There’s probably more to it.
sloppy_diffuser@sh.itjust.works 11 months ago
Looks like it comes in spools.
www.ixblue.com/store/ixf-hcf-10-100-950/
I don’t know the physics of it. I posted some info for the parent you responded to. My understanding is the applied physics is different from traditional fiber.
mpl.mpg.de/research-at-mpl/…/hollow-core-pcf