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doppler shift through fiber optic cable

doppler shift through fiber optic cable

doppler shift through fiber optic cable

(OP)
I'm thinking about measuring vibration using doppler shift with something like http://www.bksv.com/1067.asp

The problem is that I have a rotating reference frame, and it's unreasonable to move the "beamer" with the test specimen.

Do you think I might be able to use fiber optics to "rotate the beam" without distorting the signal?

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