Hermetic coatings for optical fiber and product
AssigneeSpecTran Corporation
InventorsPeter C. Schultz, Satyabrata Raychaudhuri
Life of this patent
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Abstract
A method for hermetically sealing a silica based fiber product after the fiber product has been drawn from a melt or preform wherein a hermetic layer of boron carbide or a ceramic compound having a density of above about 4 g/cc is deposited upon the fiber product. The fiber product can be initially coated with carbon or boron carbide prior to the application of the ceramic compound. Also, a method for making such fiber products using these methods, and the resultant hermetically sealed fiber products produced thereby.
Claims29
A method for hermetically sealing optical fiber products which comprises coating said optical fiber products with a hermetic coating of at least one ceramic compound of a transition metal carbide, nitride or boride, said compound having a density of above about 4 g/cc.
A method for making a hermetically sealed optical fiber product which comprises:
- drawing an optical fiber product from a melt or preform;
- and
- coating said optical fiber product with a hermetic layer of at least one ceramic compound of a transition metal carbide, nitride, boride, or mixture thereof, said compound having a density of above about 4 g/cc as to form a hermetically sealed optical fiber product.
A method for hermetically sealing optical based fiber products which comprises:
- initially coating said optical fiber products with a layer of carbon or boron carbide;
- and
- further coating said carbon coated fibers with at least one ceramic compound.
A method for making a hermetically sealed silica based optical fiber product which comprises:
- drawing a silica based optical fiber product from a melt or preform;
- initially coating said optical fiber product with a layer of carbon or boron carbide;
- and
- further coating said carbon coated fiber product with at least one ceramic compound.
A method for hermetically sealing silica based optical fiber products which comprises coating said fiber products with a hermetic layer of boron carbide.
An optical fiber product having an encapsulating hermetic coating comprising at least one ceramic compound of a transitional metal carbide, nitride or boride, said compound having a density above about 4 g/cc.
An optical fiber product having an encapsulating hermetic coating comprising a layer of boron carbide.
An optical fiber product having an encapsulating hermetic coating comprising a first layer of carbon or boron carbide and a second layer of at least one ceramic compound upon said first layer.
An optical fiber product having an encapsulating hermetic coating comprising tungsten oxide, chromium oxide, or mixtures thereof.
An optical fiber product having an encapsulating hermetic coating comprising a first layer of boron carbide deposited upon said fiber and a second layer of tungsten carbide, tungsten boride, tungsten oxide, titanium carbide, titanium nitride, titanium boride, chromium oxide, chromium nitride, chromium boride, or mixtures there of deposited upon said boron carbide layer.
Dependencies are inferred from the claim text.