Glass base material manufacturing apparatus with super imposed back-and-forth burner movement

An apparatus for manufacturing a glass base material, which is a base material of an optical fiber, comprising:

• a base rod, around and along which said glass base material is formed;
• a burner that hydrolyzes and accumulates a gas material, which is a base material of said glass base material, around and along said base rod;
• a first burner-moving-unit, on which said burner is provided, that moves said burner in a direction parallel with a longitudinal direction of said base rod;
• and
• a second burner-moving-unit, on which said first burner moving unit is provided, that moves said first burner-moving-unit in a same moving direction of said first burner-moving-unit;
• wherein:
• said first burner-moving-unit further has a first shaft, along which said first burner moving unit moves, and said second burner-moving-unit further has a second shaft provided parallel to said first shaft, along which said second burner-moving-unit moves, and a second stage engaged with said second shaft, and said first shaft is provided on said second stage so that said first shaft is moved in the longitudinal direction of said second shaft.