In one embodiment, {TAIL ~ the fiber sensing cables} 42 are configured inside {HEAD ~ the rotor shaft} 50 or casing such as in a bore, cavity, or channel 
In one embodiment , { TAIL ~ the fiber sensing cables } 42 are configured inside { HEAD ~ the rotor shaft } 50 or casing such as in a bore , cavity , or channel
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH