US4575187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical fiber with embedded metal layer
Assignee: Nokia Bell Labs
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Filing: 1983-01-28
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Granted: 1986-03-11
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Expires: 2003-01-28
Abstract
Abstract Selected portions of the interior surface of a substrate tube, or of the cladding or core layers deposited on the interior surface of the substrate tube, are treated by one or more process steps such as shaping, diffusing, leaching, or depositing. Patterning processes such as photolithography and lift-off are employed to define the selected portions. The resulting core and/or cladding layers of the fiber can be made to have a variety of geometric shapes and composition profiles useful, for example, in realizing birefringent fibers and multiple-core fibers. Also described is the similar treating of metal layers and the incorporation of such layers into the fiber.
Inventors
- 👤 Richard E. Howard
- 👤 William Pleibel
- 👤 Rogers H. Stolen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:30
CPC Classifications
C; C03; C03C; C03C15/00; C03B; C03B37/00; C03B37/01; C03B37/012; C03B37/014; C03B37/018; C03C25/00; C03C25/10; C03C25/42; C03C25/46; G; G02; G02B; G02B6/00; G02B6/02; G02B6/02042; G02B6/10; G02B6/105; C03B2203/00; C03B2203/30; C03B2203/34; C03C2218/00; C03C2218/30; C03C2218/355
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
53 words
An optical fiber including an interior portion for guiding lightwaves and a metal layer embedded in said interior portion, said metal layer extending axially along said fiber, said interior portion of said fiber comprising a glass core, a glass cladding surrounding said core, and wherein said metal layer is embedded in said cladding.
Claim 2
Dependent Claim
53 words
An optical fiber including an interior portion for guiding lightwaves and a metal layer embedded in said interior portion, said metal layer extending axially along said fiber, said interior portion of said fiber comprising a glass core, a glass cladding surrounding said core, and wherein said metal layer is embedded in said cladding.
Claim 3
Dependent Claim
31 words
The fiber of claim 1 wherein said cladding comprises an inner cladding, an outer cladding, and wherein said metal layer is located at the interface between said inner and outer claddings.
Claim 4
Dependent Claim
24 words
The fiber of claim 1 or 2 wherein said metal layer comprises a plurality of spatially separate metal segments positioned circumferentially around said fiber.
References Cited (Backward Citations)
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Cited
NL7602236A
Cited
US4179189A
Cited
US4274854A
Cited
US4407561A
Cited
US4418984A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-10 | 1989-09-09 | 1990-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-10 | 1993-09-09 | 1994-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-10 | 1997-09-09 | 1998-03-11 | $7700.00 | Window Closed / Lapsed |