[I_Am_Nous]

Fiber can be patched, but it take a lot more than just twisting the ends together like you can with copper. Usually they have a portable fusion splicer in case of a fiber cut and can at the very least fuse a length of fiber on each end of the break so it can pass light again.

[floodle]

I don't know what a fusion splicer is but I want one

[dotancohen]

Sounds like the type of thing one would borrow from Geordie Laforge.

[h2odragon]

The tool to make connections in fiber optic cables. They've got little handheld ones which are awesome.

https://www.fiberfoxamerica.com/fusion-splicer