Soot pressing for optical fiber overcladding
First Claim
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1. A method for making an optical fiber preform comprising the steps of:
- depositing a plurality of rods into a mold cavity of an apparatus having an inner wall;
depositing particulate glass material in the mold cavity between the rods and the inner wall; and
applying 25 psig to 250 psig of pressure against the particulate glass material to pressurize the particulate glass material against the plurality of rods, creating a soot compact.
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Abstract
A method and an apparatus for making an optical fiber preform comprising the steps of (i) depositing a plurality of rods are deposited into an inner cavity of an apparatus; (ii) depositing particulate glass material in the inner cavity between the rods and the inner wall; and (iii) applying pressure against the particulate glass material to pressurize the particulate glass material against the plurality of rods.
19 Citations
31 Claims
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1. A method for making an optical fiber preform comprising the steps of:
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depositing a plurality of rods into a mold cavity of an apparatus having an inner wall; depositing particulate glass material in the mold cavity between the rods and the inner wall; and applying 25 psig to 250 psig of pressure against the particulate glass material to pressurize the particulate glass material against the plurality of rods, creating a soot compact. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method for making an optical fiber preform with an apparatus comprising an inner wall, an outer wall, and a mold cavity, the outer wall surrounding the inner wall and the inner wall surrounding the mold cavity, said method comprising the steps of:
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depositing a plurality of rods into the mold cavity; depositing particulate glass material in the mold cavity between the rods and the inner wall; and applying 25 psig to 250 psig of pressure against the particulate glass material to pressurize the particulate glass material against the plurality of rods, wherein the pressure is applied at least radially inwards against the particulate glass material to pressurize the particulate glass material against the rods and, wherein the inner wall comprises a rolled sheet with interdigitated fingers, and the step of applying a radially inward pressure comprises pulling the interdigitated fingers in opposite directions in order to reduce the diameter of the rolled sheet.
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Specification