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