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