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US 10,407,337 B2Granted
Method of making optical fiber preform with pressed soot
AssigneeCorning Incorporated
InventorsDaniel Robert Boughton, James Gerard Fagan, Larry Gleason Hubbard, Jr., Ji Wang
Life of this patent
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Abstract
According to some embodiments method for making an optical fiber preform comprises the steps of: (i) placing a plurality of rods with an outer surface having a coefficient of friction 0.02≤COF≤0.3 into an inner cavity of an apparatus; (ii) placing particulate glass material in the inner cavity between the rods and an inner wall of the mold cavity; and (iii) applying pressure against the particulate glass material to press the particulate glass material against the plurality of rods.
Claims20
A method for forming an optical fiber preform comprising the steps of:
- (I) placing a plurality of rods into a mold cavity of an apparatus, wherein at least one of the plurality of rods is a metal or ceramic rod having a coating, the coating comprising at least one of:
- amorphous silicon (a-silicon), xylan flouropolymer, composites of xylan with other polymers, molydisulfide (molybdenum disulfide), tungsten disulfide, electroless nickel infused with Teflon, nickel infused with SiC;
- (II) placing particulate glass material in the mold cavity between the rods and an inner wall of the mold cavity;
- and
- (Ill) applying pressure against the particulate glass material to press the particulate glass material against the plurality of rods.
2 more elements
A method for making an optical fiber preform comprising the steps of:
- placing a plurality of rods into a mold cavity of an apparatus, wherein at least two of the plurality of rods comprise an outer surface comprising at least one of the following coatings:
- amorphous silicon (a-silicon), Teflon, xylan flouropolymer, composites of xylan with other polymers, molydisulfide (molybdenum disulfide), tungsten disulfide, electroless nickel infused with Teflon, nickel infused with SiC;
- placing particulate glass material in the mold cavity between the rods and an inner wall of the mold cavity;
- and
- applying pressure against the particulate glass material to press the particulate glass material against the plurality of rods.
2 more elements
A method of making an optical fiber, the method comprising the steps of:
- (I) placing a plurality of rods into a mold cavity of an apparatus, wherein at least one of the plurality of rods is a metal or ceramic rod having a coating thereon, the coating comprising at least one of:
- amorphous silicon coating (a-silicon), xylan flouropolymer, composites of xylan with other polymers, molydisulfide (molybdenum disulfide), tungsten disulfide, electroless nickel infused with Teflon, nickel infused with SiC;
- (II) placing particulate glass material in the mold cavity between the rods and inner wall of the mold cavity;
- (Ill) forming a soot compact by applying pressure against the particulate glass material to press the particulate glass material against the plurality of rods;
- (IV) removing the least one of said plurality of rods from the soot compact, thereby to format least one void within the soot compact;
- (V) forming an optical fiber preform assembly by inserting at least one glass rod into the at least one void;
- (VI) forming the optical fiber preform by sintering the optical fiber preform;
- and
- (VII) drawing an optical fiber from the optical fiber preform.
6 more elements
A method of making an optical fiber, the method comprising the steps of:
- (I) placing a plurality of rods into a mold cavity of an apparatus, wherein at least two of the plurality of rods comprise an outer surface comprising at least one of the following coatings:
- amorphous silicon (a-silicon), Teflon, xylan flouropolymer, composites of xylan with other polymers, molydisulfide (molybdenum disulfide), tungsten disulfide, electroless nickel infused with Teflon, nickel infused with SiC, wherein the outer surface has a coefficient of friction COF, and 0.02≤COF≤0.3;
- (II) placing particulate glass material in the mold cavity between the rods and an the inner wall of the mold cavity;
- (III) forming a soot compact by applying pressure against the particulate glass material to press the particulate glass material against the plurality of rods, and;
- (IV) removing at least two of the plurality of rods from the soot compact to form at least two voids within the soot compact;
- (V) forming an optical fiber preform assembly by inserting at glass rods into said voids;
- (VI) forming the optical fiber preform by sintering the optical fiber preform assembly;
- and
- (VII) drawing an optical fiber from the optical fiber preform.
6 more elements
A method of making an optical fiber, the method comprising the steps of:
- (I) placing a plurality of rods into a mold cavity of an apparatus, wherein at least two of the plurality of rods comprise an outer surface comprising at least one of the following coatings:
- amorphous silicon (a-silicon), Teflon, xylan flouropolymer, composites of xylan with other polymers, molydisulfide (molybdenum disulfide), tungsten disulfide, electroless nickel infused with Teflon, nickel infused with SiC, wherein the outer surface has a coefficient of friction COF, and 0.02<COF<0.3;
- (II) placing particulate glass material in the mold cavity between the rods and an inner wall of the mold cavity;
- (III) forming a soot compact by applying pressure against the particulate glass material to press the particulate glass material against the plurality of rods, and;
- (IV) forming an optical preform assembly by removing the at least two of the plurality of rods from the soot compact to form at least two voids within the soot compact;
- (V) sintering the optical fiber preform assembly and forming the optical fiber preform;
- and
- (VI) drawing an optical fiber from the optical fiber preform.
5 more elements
Dependencies are inferred from the claim text.