Further, the present invention is {HEAD ~ a method} for manufacturing {TAIL ~ an optical fiber soot}, which method comprising using the apparatus for manufacturing an optical fiber soot 
for manufacturing
Further , the present invention is { HEAD ~ a method } for manufacturing { TAIL ~ an optical fiber soot } , which method comprising using the apparatus for manufacturing an optical fiber soot
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH