{HEAD ~ IR light} from {TAIL ~ the laser} is directed to the spring region of the suspension by optical fibers 
from
{ HEAD ~ IR light } from { TAIL ~ the laser } is directed to the spring region of the suspension by optical fibers
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH