Patent
Optical communication system
Heidemann Rolf
- 21 May 1992
About: The article was published on 21 May 1992. The article focuses on the topics: Optical communication.
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References
Patent
Optical amplifier and optical communication system provided with the optical amplifier
Masuo Suyama
- 31 Aug 1990
TL;DR: In this paper, a modulating circuit modulates the pumping light beam with a high-frequency modulating signal having a period shorter than the life span of fluorescence resulting from an excited state.
87
Patent
Gain stabilized fiber amplifier
Martin Zirngibl
- 22 Jan 1992
TL;DR: In this article, an optical fiber doped with a rare earth element and coupled to be pumped with a laser is coupled to an optical feedback loop, where a narrow bandwidth filter coupled to the feedback loop allows a selected wavelength of the amplified spontaneous emission to pass from the output of the fiber amplifier to the input of the optical amplifier.
54
Patent
Telemetry for optical fiber amplifier repeater
M.T. Fatehi,N.A. Olsson +1 more
- 18 Mar 1991
TL;DR: In this article, an optical communication system including a doped optical fiber amplifier such as, for example, an erbium doped amplifier, is provided with an amplifier pump which operates at approximately 1.48µm.
54
Patent
Optical fiber telecommunication line with separate, optically transmitted service channels
Grasso Giorgio,Tamburello Mario +1 more
- 29 Jan 1991
TL;DR: In this article, an optical fiber transmission line which includes units for injecting into, and units for extracting, optical service signals from the line's optical fiber is defined, and each of the units is associated with an optical coupler which is inserted in the line and which is suitable for coupling it with the line fiber and/or for extracting the optical service signal signals.
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