> That looks like single mode fiber never refracts…
No, it does.
> Surely it can't go round any bend, then, though?
No, if you bend the fiber too much the light leaks out into the cladding.
No, it does.
> Surely it can't go round any bend, then, though?
No, if you bend the fiber too much the light leaks out into the cladding.
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