US3826992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for amplification of a coherent optical signal
Assignee: Eltro GmbH and Co
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Filing: 1973-03-23
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Granted: 1974-07-30
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Expires: 1993-03-23
Abstract
Abstract A device for the amplification of a coherent optical signal including a light amplifying conductive filament having an optically passive core encompassed by a sleeve including a selective fluorescent optically active material, which is in turn encompassed by an optically passive outer sleeve; a second lightconductive propagating filament being positioned in axial alignment therewith and formed of a core and encompassing sleeve of optically passive materials; and a spectroscopic divider being interposed between said amplifying and propagating lightconductive filaments.
Inventors
- 👤 W Friedl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:23
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/06; H01S3/063; H01S3/067; H01S3/06754; H01S3/06708; H01S3/06729
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
209 words
A device for the amplification of a coherent optical signal with a selective fluorescent and optically active material, comprising at least one amplifying light-conductive filament said filament including a core and a first sleeve encompassing said core, said sleeve having a major portion of the refractive index thereof for optical propagated wave length smaller than the refractive index of said core, selective fluorescent material being contained in said first sleeve, said core formed of an optically passive material, and a second sleeve formed of an optically passive material encompassing said first sleeve, said second sleeve having refractive index smaller than the major portion of the refractive index of said first sleeve; a lightconductive filament formed of an optically passive material being positioned in coaxial alignment and contiguous relationshIp with said amplifying-light conductive filament and adapted to impart optical light propagation through said device, said propagatinglight conductive filament including a core and a sleeve encompassing said core, said core and sleeve having refractive indices equal to the major portions of the refractive indices of the core and the first sleeve of said amplifying-light conductive filament; and a spectroscopic divider for effecting the conveyance of the propagated optical signal and of the signal to be amplified into said amplifying-light conductive filament.
Claim 2
Independent Claim
209 words
A device for the amplification of a coherent optical signal with a selective fluorescent and optically active material, comprising at least one amplifying light-conductive filament said filament including a core and a first sleeve encompassing said core, said sleeve having a major portion of the refractive index thereof for optical propagated wave length smaller than the refractive index of said core, selective fluorescent material being contained in said first sleeve, said core formed of an optically passive material, and a second sleeve formed of an optically passive material encompassing said first sleeve, said second sleeve having refractive index smaller than the major portion of the refractive index of said first sleeve; a lightconductive filament formed of an optically passive material being positioned in coaxial alignment and contiguous relationshIp with said amplifying-light conductive filament and adapted to impart optical light propagation through said device, said propagatinglight conductive filament including a core and a sleeve encompassing said core, said core and sleeve having refractive indices equal to the major portions of the refractive indices of the core and the first sleeve of said amplifying-light conductive filament; and a spectroscopic divider for effecting the conveyance of the propagated optical signal and of the signal to be amplified into said amplifying-light conductive filament.
Claim 3
Dependent Claim
22 words
A device as claimed in claim 1, said spectroscopic divider being positioned intermediate said amplifying-light conductive filament and said propagating-light conductive filament.
Claim 4
Dependent Claim
46 words
A device as claimed in claim 1, said amplifying-light conductive filament having an inclined end surface distal to the end contacting said propagating-light conductive filament, said inclined end surface subtending an acute angle with reference to an axis normal to the longitudinal axis of said filaments.
References Cited (Backward Citations)
US3484710A
Cited
US3599106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |