Manufacturing method for planar optical waveguides
First Claim
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1. A process for manufacturing glass blanks used to make planar optical waveguides, comprising:
- a. forming a planar fused glass structure comprised of a first glass having a first refractive index and at least a second glass having a second refractive index which is different from said first refractive index; and
b. reducing the thickness of said structure, by stretching said structure, to produce a planar optical can of preselected final dimensions.
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Abstract
A metehod of manufacturing planar optical waveguides in which a planar optical preform which is stretched to form a planar optical cane with substantially smaller cross-sectional dimensions than the original preform, and in which the optical circuitry pattern is achieved by lithographic techniques. Optical fiber preforms may be inserted in slots in a substrate to form the planar optical preform.
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Citations
29 Claims
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1. A process for manufacturing glass blanks used to make planar optical waveguides, comprising:
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a. forming a planar fused glass structure comprised of a first glass having a first refractive index and at least a second glass having a second refractive index which is different from said first refractive index; and b. reducing the thickness of said structure, by stretching said structure, to produce a planar optical can of preselected final dimensions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A process for manufacturing planar optical waveguides, comprising:
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a. forming a planar structure by combining a glass substrate having a first refractive index with at least one region of a second glass having a second refractive index which is different from said first refractive index; b. heating and stretching said structure to produce a planar optical cane with preselected final dimensions; c. removing material from at least one portion of said planar optical can using lithographic techniques to produce preselected optical circuitry thereon; and d. combining a region of additional material with said at least one cane portion over at least one area where material has been removed. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification