{HEAD ~ the optic fiber end surface} is oriented at {TAIL ~ an angle} of 15° to a normal plane of the optic fiber center axis 
is oriented at
{ HEAD ~ the optic fiber end surface } is oriented at { TAIL ~ an angle } of 15 ° to a normal plane of the optic fiber center axis
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH