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US4744105A
Expired / Lapsed
US
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Receiver using optical feedback
Assignee: Nokia Bell Labs
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Filing: 1986-07-21
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Granted: 1988-05-10
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Expires: 2006-07-21
Abstract
Abstract A receiver for optical signals using optical feedback between the output and input terminals of a transimpedance amplifier.
Inventors
- 👤 Bryon L. Kasper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:56
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/60; H04B10/66; H04B10/69; H03; H03K; H03K17/00; H03K17/51; H03K17/78; H03K17/785; H04B10/693
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
88 words
A receiver comprising an amplifier having an input terminal and an output terminal, a current source being connected to said input terminal, a first photodetector being connected to said input terminal, a first light source being connected to said output terminal, a first optical path coupling said first photodetector and said first light source, said current source comprising a second photodetector; a second light source connected to said output terminal; and a second optical path, said second path optically coupling said second light source and said second photodetector.
Claim 2
Dependent Claim
88 words
A receiver comprising an amplifier having an input terminal and an output terminal, a current source being connected to said input terminal, a first photodetector being connected to said input terminal, a first light source being connected to said output terminal, a first optical path coupling said first photodetector and said first light source, said current source comprising a second photodetector; a second light source connected to said output terminal; and a second optical path, said second path optically coupling said second light source and said second photodetector.
Claim 3
Dependent Claim
17 words
A receiver as recited in claim 1 in which said first optical path comprises an optical waveguide.
Claim 4
Dependent Claim
16 words
A receiver as recited in claim 2 in which said optical waveguide comprises an optical fiber.
Claim 5
Dependent Claim
16 words
A receiver as recited in claim 3 in which said second path comprises an optical waveguide.
References Cited (Backward Citations)
GB203020A
Cited
US3972004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-10 | 1991-11-09 | 1992-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-10 | 1995-11-09 | 1996-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-10 | 1999-11-09 | 2000-05-10 | $7700.00 | Window Closed / Lapsed |