MANUFACTURE OF NON-QUARTZ TYPE BASE MATERIAL FOR OPTICAL FIBER

摘要

PURPOSE:To obtain a non-quartz type base material for an optical fiber by a vapor axial deposition (VAD) method by depositing quartz type oxide on one end of a heat resistant rod before growing non-quartz type porous oxide. CONSTITUTION:Quartz type porous oxide 15 consisting of three components of Si, Ge and P is deposited on one end of a heat resistant rod 14 by a VAD method. On the oxide 15 non-quartz type finely powdered oxide 16 consisting of Ge and Sb is similarly deposited and grown to form non-quartz type porous oxide 17 extending in the longitudinal direction of the rod 14. The oxide 17 is converted into transparent glass material by heating to a high temp. Thus, a non-quartz type base material for an optical fiber is obtd. by a VAD method.