US4755037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber optic coupler
Assignee: McDonnell Douglas Corp
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Filing: 1987-04-13
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Granted: 1988-07-05
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Expires: 2007-04-13
Abstract
Abstract A fiber optic coupler is provided having first and second optical fibers fused together along a predetermined length having fused tapered ends for the input and output of optical energy and a constant diameter section therebetween to facilitate coupling of optical energy between the first and second optical fibers. The constant diameter section provides a higher efficient coupling action and a stronger, more rugged coupler.
Inventors
- 👤 Harvey C. Bjornlie
- 👤 Timothy E. Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:59
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/28; G02B6/2804; G02B6/2821; G02B6/2835; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A method of producing a fiber optic coupler, comprising: (a) stripping away the protective jacket and cleaning at least two fiber optic waveguides; (b) placing the stripped and cleaned sections of the waveguides longitudinally side by side in intimate contact under slight tension; (c) heating the fiber optic waveguides along the longitudinally placed sections to cause the outer cladding materials to fuse and melt together; and (d) reheating and stretching the fused waveguides differentially forming a reduced cylindrical constant diameter coupling region at the midsection of the fused waveguides.
Claim 2
Independent Claim
89 words
A method of producing a fiber optic coupler, comprising: (a) stripping away the protective jacket and cleaning at least two fiber optic waveguides; (b) placing the stripped and cleaned sections of the waveguides longitudinally side by side in intimate contact under slight tension; (c) heating the fiber optic waveguides along the longitudinally placed sections to cause the outer cladding materials to fuse and melt together; and (d) reheating and stretching the fused waveguides differentially forming a reduced cylindrical constant diameter coupling region at the midsection of the fused waveguides.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-05 | 1992-01-04 | 1992-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-05 | 1996-01-04 | 1996-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-05 | 2000-01-04 | 2000-07-05 | $7700.00 | Window Closed / Lapsed |