Method of manufacturing a silica glass preform
First Claim
1. A method of manufacturing a silica glass preform comprising the steps of:
- inserting a rod-like member mainly containing a ductile material, into a forming space of a mold;
charging a remaining space of the forming space with a forming material containing silica glass powder, or doped silica glass powder;
compressing the mold charged with the forming material from outside such as to form a porous glass body of the forming material around the rod-like member;
removing the rod-like member from the porous glass body thereby forming a hole after removal of the rod-like member;
inserting a glass rod into the hole;
purifying said porous glass body in which the glass rod is inserted; and
consolidating said porous glass body purified in the above purifying step.
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Abstract
The method of manufacturing a silica glass preform comprises the steps of inserting a rod-like member mainly containing a ductile material, into a forming space of a mold, charging the remaining space of the forming space with a forming material containing silica glass powder or doped silica glass powder, compressing the mold charged with the forming material from outside such as to form a porous glass body of the forming material around the rod-like member, removing the rod-like member from the porous glass body, inserting a glass rod into the hole formed after removal of the rod-like member, purifying said porous glass body in which the glass rod is inserted, and consolidating said porous glass body purified in the above purifying step.
49 Citations
17 Claims
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1. A method of manufacturing a silica glass preform comprising the steps of:
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inserting a rod-like member mainly containing a ductile material, into a forming space of a mold; charging a remaining space of the forming space with a forming material containing silica glass powder, or doped silica glass powder; compressing the mold charged with the forming material from outside such as to form a porous glass body of the forming material around the rod-like member; removing the rod-like member from the porous glass body thereby forming a hole after removal of the rod-like member; inserting a glass rod into the hole; purifying said porous glass body in which the glass rod is inserted; and consolidating said porous glass body purified in the above purifying step. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification