Topic Solutions Main heating source position detection sensor 800, the optical fiber basic material production device which includes the auxiliary means for supporting 1100 which are connected with wire or radio system in the auxiliary means for supporting operation control section 1000 which is connected with wire or radio system to the aforementioned main heating source position detection sensor 800 and the aforementioned auxiliary means for supporting operation control section 1000 and the optical fiber basic material production method of using this are disclosed in the optical fiber basic material production device which can accomplish evaporation process in order to form the optical fiber basic material with this invention the chemical evaporation which becomes deformed (MCVD) with method. Although this invention, it assists supports circular tube 100 and minimizing deflecting the circular tube 100 by making the effective length of circular tube decrease 100, raising evaporation efficiency especially, by making deflecting the leader decrease substantially, it is possible, to produce the optical fiber basic material of high quality, in addition, when producing the large-sized optical fiber basic material, it is possible to overcome the restriction with the length of circular tube 100.
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