US3659915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fused silica optical waveguide
Assignee: Corning Glass Works
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Filing: 1970-05-11
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Granted: 1972-05-02
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Expires: 1990-05-11
Abstract
Abstract An optical waveguide having a high purity fused silica cladding layer, and a core of high plurality fused silica doped with a sufficient amount of a multivalent metal oxide so as to increase the index of refraction of the core above that of the cladding layer.
Inventors
- 👤 Robert D Maurer
- 👤 Peter C Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:05
CPC Classifications
C; C03; C03C; C03C13/00; C03C13/04; C03C13/045; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/025; C03B37/027; G; G02; G02B; G02B6/00; G02B6/02; Y; Y10; Y10S; Y10S65/00; Y10S65/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
14 words
The waveguide of claim 1 wherein the cladding layer is substantially pure fused silica.
Claim 2
Dependent Claim
30 words
The waveguide of claim 9 wherein the core is formed of at least 94.75 percent by weight of fused silica and an effective amount up to 5.25 percent titanium oxide.
Claim 3
Dependent Claim
98 words
An optical waveguide comprising a cladding layer formed of a material selected from the group consisting of pure fused silica and doped fused silica, and a core formed of fused silica doped to a degree in excess of that of the cladding layer so that the index of refraction thereof is of a value greater than the index of refraction of said cladding layer, said core being doped with at least one multivalent metal oxide selected from the group consisting of titanium oxide, tantalum oxide, tin oxide, niobium oxide, zirconium oxide, ytterbium oxide, lanthanum oxide, and aluminum oxide.
Claim 4
Dependent Claim
82 words
An optical waveguide comprising a cladding layer formed of a material selected from the group consisting of pure fused silica and doped fused silica, and a core formed of fused silica doped to a degree in excess of that of the cladding layer so that the index of refraction thereof is of a value greater than the index of refraction of said cladding layer, said core being doped with at least one material selected from the group consisting of cesium and rubidium.
Claim 5
Dependent Claim
81 words
An optical waveguide comprising a cladding layer formed of fused silica doped with at least one multivalent metal oxide selected from the group consisting of titanium oxide, tantalum oxide, tin oxide, niobium oxide, zirconium oxide, ytterbium oxide, lanthanum oxide, and aluminum oxide, and a core of fused silica doped to a degree in excess of that of the cladding layer so that the index of refraction thereof is of a value greater than the index of refraction of said cladding layer.
Claim 6
Dependent Claim
67 words
An optical waveguide comprising a cladding layer formed of fused silica doped with at least one material selected from the group consisting of cesium and rubidium, and a core formed of a fused silica doped to a degree in excess of that of the cladding layer so that the index of refraction thereof is of a value greater than the index of refraction of said cladding layer.
Claim 7
Dependent Claim
62 words
An optical waveguide comprising a cladding layer formed of fused silica doped with titanium oxide, and a core formed of fused silica doped to a degree in excess of that of the cladding layer so that the index of refraction thereof is of a value greater than the index of refraction of said cladding layer, said core being doped with titanium oxide.
Claim 8
Dependent Claim
52 words
An optical waveguide comprising a cladding layer formed of substantially pure fused silica, and a core formed of fused silica doped to a degree so that the index of refraction thereof is of a value greater than the index of refraction of said cladding layer, said core being doped with titanium oxide.
Claim 9
Dependent Claim
63 words
An optical waveguide comprising a cladding layer formed of substantially pure fused silica, and a core formed of fused silica doped to a degree so that the index of refraction thereof is of a value greater than the index of refraction of said cladding layer, said core being doped with at least one material selected from the group consisting of cesium and rubidium.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |