Apparatus for production of optical fiber preform

An apparatus for producing an optical fiber preform, comprising:

• an oxygen-hydrogen burner adapted to hydrolyze a feedstock gas and which traverses a target back and forth, the target including a seed rod or a soot body formed on a seed rod, said oxygen-hydrogen burner produces glass particulate for deposition on said seed rod or said soot body;
• first charging means for charging said particulate to a first polarity and to a predetermined charged before said particulate are deposited on said target;
• a plate electrode, provided at a position on an opposite side of said target from said first charging means, for creating an electric field having a second polarity, said second polarity being opposite said first polarity;
• means for measuring a surface potential of said target;
• and
• means for ejecting ions responsive to the measured surface potential.

An apparatus for producing an optical fiber preform, comprising:

• an oxygen-hydrogen burner adapted to hydrolyze a feedstock gas and which traverses a target back and forth, the target including a seed rod or a soot body formed on a seed rod, said oxygen-hydrogen burner produces glass particulate for deposition on said seed rod or said soot body;
• first charging means for charging said particulate to a first polarity and to a predetermined charge before said particulate are deposited on said target;
• a plate electrode, provided at a position on an opposite side of said target from said first charging means, for creating an electric field having a second polarity, said second polarity being opposite said first polarity;
• means for measuring a surface potential of said target;
• and
• means for controlling the amount of the feedstock gas introduced to said burner in response to the measured surface potential.

An apparatus for producing an optical fiber preform, comprising:

• an oxygen-hydrogen burner adapted to hydrolyze a feedstock gas and which traverses a target back and forth, the target including a seed rod or a soot body formed on a seed rod, said oxygen-hydrogen burner produces glass particulate for deposition on said seed rod or said soot body;
• first charging means for charging said particulate to a first polarity and to a predetermined charge before said particulate are deposited on said target;
• plate electrode, provided at a position on an opposite side of said target from said first charging means, for creating an electric field having a second polarity, said second polarity being opposite said first polarity;
• a drive mechanism which causes the target to traverse the burner in a longitudinal direction of said target, and which causes said target to rotate around a longitudinal axis of said target;
• and
• means for alternating the polarity of the predetermined charge in response to a direction of the traverse, and the charged particulate being deposited onto the target.

An apparatus for producing an optical fiber preform, comprising:

• an oxygen-hydrogen burner adapted to hydrolyze a feedstock gas and which traverses a target back and forth, the target including a seed rod or a soot body formed on a seed rod, said oxygen-hydrogen burner produces glass particulate for deposition on said seed rod or said soot body;
• first charging means for charging said particulate to a first polarity and to a predetermined charge before said particulate are deposited on said target;
• an electrode, provided at a position on an opposite side of said target from said first charging means, for creating an electric field having a second polarity, said second polarity being opposite said first polarity;
• and
• a drive mechanism which causes the target to traverse the burner in a longitudinal direction of the target and causes the target to rotate around a longitudinal axis of the target.

An apparatus for producing an optical fiber preform, comprising:

• an oxygen-hydrogen burner adapted to hydrolyze a feedstock gas and which traverses a target back and forth, the target including a seed rod or a soot body formed on a seed rod, said oxygen-hydrogen burner produces glass particulate for deposition on said seed rod or said soot body;
• first charging means for charging said particulate to a first polarity and to a predetermined charge before said particulate are deposited on said target;
• a plate electrode, provided at a position on an opposite side of said target from said first charging means, for creating an electric field having a second polarity, said second polarity being opposite said first polarity;
• and
• a drive mechanism which causes the target to traverse the burner in a longitudinal direction of the target and causes the target to rotate around a longitudinal axis of the target, and
• said plate electrode ejecting ions onto the target before said charged particulate are produced from the burner, said ions being charged to a polarity opposite to the polarity of the particulate.

An apparatus for producing an optical fiber preform, comprising:

• an oxygen-hydrogen burner adapted to hydrolyze a feedstock gas and which traverses a target back and forth, the target including a seed rod or a soot body formed on a seed rod, said oxygen-hydrogen burner produces glass particulate for deposition on said seed rod or said soot body;
• first charging means for charging said particulate to a first polarity and to a predetermined charge before said particulate are deposited on said target;
• plate electrode, provided at a position on an opposite side of said target from said first charging means, for creating an electric field having a second polarity, said second polarity being opposite said first polarity;
• and
• a drive mechanism which causes said target to traverse said burner in a longitudinal direction of said target an causes said target to rotate around a longitudinal axis of said target.

An apparatus for producing an optical fiber preform, comprising:

• an oxygen-hydrogen burner adapted to a hydrolyze a feedstock gas and which traverses a target back and forth, the target including a seed rod or a soot body formed on a seed rod, said oxygen-hydrogen burner produces glass particulate for deposition on said seed rod or said soot body;
• first charging means for charging said particulate to a first polarity and to a predetermined charge before said particulate are deposited on said target;
• a plate electrode, provided at a position on an opposite side of said target from said first charging means, for creating an electric field having a second polarity, said second polarity being opposite said first polarity;
• and
• a drive mechanism which causes said target to traverse said burner in a longitudinal direction of said target and causes said target to rotate around a longitudinal axis of the target;
• said plate electrode ejecting ions onto the target before said charged particulate are produced from the burner, said ions being charged to a polarity opposite to the polarity of the particulate.

An apparatus for producing an optical fiber preform, comprising:

• a reaction vessel;
• a burner in said reaction vessel, adapted to traverse a target back and forth, the target and producing particulate for deposition on the target;
• a first charging device located in said reaction vessel on a first side of the target, separate from the target and charging the particulate produced by said burner with a first polarity before the particulate are deposited on the target;
• and
• a second charged device separate from the target and located in said reaction vessel on a second side of the target opposite to the first side and creating an electric field of a second polarity opposite to the first polarity.

An apparatus for producing an optical fiber preform, comprising:

• a reaction vessel;
• a target located in said reaction vessel;
• a burner in said reaction vessel and producing glass particulate for deposition on the target;
• a driving mechanism adapted to move said target in back and forth with respect to said burner;
• a first charging device located in said reaction vessel on a first side of the target, separate from the target and charging the particulate produced by said burner with a first polarity before the particulate are deposited on the target;
• a second charged device separate from the target and located in said reaction vessel on a second side of the target opposite to the first side and creating an electric field of a second polarity opposite to the first polarity;
• and
• a charge alternating mechanism adapted to change a charge of the first and second polarities responsive to the back and forth movement caused by said driving mechanism and to increase the charge applied at an end of the target.