The whole mechanism tends to be mounted inside the case on some kind of damping, but I would assume that has more to do with overall ruggedness than with vibrations in operation (it's precision micro mechanics that are quite rigid, flexing of the fiber itself does not seem like much of an issue to me).
Ah, I see. Interesting. Thanks for the explanation! If a public tour is ever offered on such a repair ship, I'll check it out, it sounds like awesome technology.