Patent US3887876A successfully refreshed from Google Patents.
US3887876A
Expired / Lapsed
US
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Optical intermediate amplifier for a communication system
Assignee: Siemens Corp
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Filing: 1973-09-21
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Granted: 1975-06-03
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Expires: 1993-09-21
Abstract
Abstract An intermediate amplifier for a transmission system intended for communications transmission applications using light waves in optical wave guides employs an optical amplifier which amplifies the light waves on the laser principle. For transmitting pulsemodulated signals, the optical amplifier is pulse pumped at the instant when light pulses arrive. The pumping device includes an electronic amplifier whose input receives a part of the incoming light power by way of a photodiode.
Inventors
- 👤 Gunter Zeidler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:54
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/50; H04; H04B; H04B10/00; H04B10/29; H04B10/291; H04B10/2912; H04B10/2914; H04B10/293; H04B10/2931
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
An intermediate amplifier for a communications transmission system for transmitting communications by way of light waves in optical wave guides, said intermediate amplifier comprising an optical amplifier for amplifying the light waves according to the laser principle, means for electrically pulse pumping said optical amplifier upon receipt of light pulses at said optical amplifier, said pumping means including an electronic amplifier, a photo diode connected to said electronic amplifier and receiving a portion of the incoming light power of the light pulses, said optical amplifier operable in response to said light pulses to provide said optical amplifier with pumping pulses at those times at which subsequent light pulses pass through said optical amplifier.
Claim 2
Dependent Claim
113 words
An intermediate amplifier for a communications transmission system for transmitting communications by way of light waves in optical wave guides, said intermediate amplifier comprising an optical amplifier for amplifying the light waves according to the laser principle, means for electrically pulse pumping said optical amplifier upon receipt of light pulses at said optical amplifier, said pumping means including an electronic amplifier, a photo diode connected to said electronic amplifier and receiving a portion of the incoming light power of the light pulses, said optical amplifier operable in response to said light pulses to provide said optical amplifier with pumping pulses at those times at which subsequent light pulses pass through said optical amplifier.
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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |