{TAIL ~ An apparatus} for manufacturing an optical fiber soot, which comprises a core partition having {HEAD ~ an opening portion} at core burner side provided on a periphery of a core burner, in a reactor of the apparatus to be used in a conventional VAD method 
{ TAIL ~ An apparatus } for manufacturing an optical fiber soot , which comprises a core partition having { HEAD ~ an opening portion } at core burner side provided on a periphery of a core burner , in a reactor of the apparatus to be used in a conventional VAD method
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH