US3943358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terminal and repeater stations for telecommunication system using optical fibers
Assignee: Thales SA
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Filing: 1974-07-23
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Granted: 1976-03-09
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Expires: 1994-07-23
Abstract
Abstract In the telecommunication system using optical fibers, each terminal or repeater station comprises negative feedback via an optical channel, the output electroluminescent diode being coupled to the input photodiode by an optical fiber.
Inventors
- 👤 Jean-Claude Reymond
- 👤 Luigi d'Auria
- 👤 Guy Chevalier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:13
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/29
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
135 words
An optical fiber telecommunication system comprising a transmitting station, at least one repeating station, and a receiving station, optical fibers for interconnecting said stations and propagating light energy carrying an electric signal respectively transmitted, repeated and received by said stations; each repeating station having an input, a photodiode connected to said electric input for detecting said signal, an amplifier having an input connected to said photodiode for amplifying said electric signal and an output, an electroluminescent diode connected to said amplifier output for transmitting amplified light energy modulated by said electric signal, and optical fiber means coupled to said electroluminescent diode for taking a portion of said amplified light energy and for transmitting said portion backward to said input photodiode of one of said repeating stations disposed between said receiving station and said transmitting station.
Claim 2
Dependent Claim
135 words
An optical fiber telecommunication system comprising a transmitting station, at least one repeating station, and a receiving station, optical fibers for interconnecting said stations and propagating light energy carrying an electric signal respectively transmitted, repeated and received by said stations; each repeating station having an input, a photodiode connected to said electric input for detecting said signal, an amplifier having an input connected to said photodiode for amplifying said electric signal and an output, an electroluminescent diode connected to said amplifier output for transmitting amplified light energy modulated by said electric signal, and optical fiber means coupled to said electroluminescent diode for taking a portion of said amplified light energy and for transmitting said portion backward to said input photodiode of one of said repeating stations disposed between said receiving station and said transmitting station.
Claim 3
Dependent Claim
23 words
A system according to claim 1 further comprising means connected to said electroluminescent diode for adjusting said portion of said amplified light energy.
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) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |