The inner fibers {HEAD ~ each} provides {TAIL ~ an inner connector} to couple with one of OSAs 
The inner fibers { HEAD ~ each } provides { TAIL ~ an inner connector } to couple with one of OSAs
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH