1
Walter Hagenlocher, Lutz Rapp, Werner Eschen, Istvan Ragaly, Heinz Scharpf, Jorg Streller, Johann Weigand, Klaus Winkler: Alternator-rectifier unit with economical connections to wires embedded in a circuit board. Robert Bosch, Frishauf Holtz Goodman & Woodward, September 10, 1985: US04540907 (7 worldwide citation)

A wire conductor embedded in a circuit board for interconnecting rectifier diodes passes through a cut-out of the circuit board and is bent out of the cut-out beyond the surface of the circuit board so as to provide a U-shaped connection piece in which the end of a generator winding wire can be laid ...


2
Lutz Rapp: Bidirectional optical amplifier. Siemens Aktiengesellschaft, Bell Boyd & Lloyd, April 27, 2004: US06728027 (4 worldwide citation)

An optical amplifier contains two amplifier paths. An optical user signal (&agr;, &bgr;) is in each case supplied to an optical amplifier (EDF


3
Lutz Rapp: Optical fiber amplifier. Siemens Aktiengesellschaft, Bell Boyd & Lloyd, June 24, 2003: US06583923 (4 worldwide citation)

The invention is directed to an optical fiber amplifier having a switchable or interchangeable fiber module for varying the effective length of an amplification fiber. An optical fiber amplifier for wavelength-division multiplex (WDM) signals comprises an interchangeable fiber module (FM) in the bas ...


4
Lutz Rapp, Dario Setti: Optical amplifier configuration. Nokia Siemens Network Oy, Laurence A Greenberg, Werner H Stemer, Ralph E Locher, May 29, 2012: US08189258 (3 worldwide citation)

An optical amplifier configuration for WDM (wavelength division multiplex) systems uses a common pump source connected to an input of an optical splitter deploying pump light via variable optical attenuators to a plurality of optical amplifiers. Control circuits determine individually the output pow ...


5
Lutz Rapp: Optical network and optical network element. Xieon Networks r l, Nelson Mullins Riley & Scarborough, July 18, 2017: US09712242 (3 worldwide citation)

An optical network is suggested, comprising a first set of optical fibers, a multimode multiplexer, a multimode amplifier, a multimode demultiplexer, and a second set of optical fibers, wherein the first set of optical fibers is connected via the multimode multiplexer to the multimode amplifier and ...


6
Stefan Gianordoli, Lutz Rapp, Michael Rasztovits Wiech, Andreas Stadler: Bidirectional optical amplifier arrangement. Nokia Siemens Networks & Co KG, Laurence A Greenberg, Werner H Stemer, Ralph E Locher, February 4, 2014: US08644707 (3 worldwide citation)

The invention relates to a bidirectional optical amplifier array (VA) which is preferably used in a passive optical network (PON) system, is disposed between a first line termination (OLT) and a second line termination (ONU), and is penetrated by an optical downstream signal (OSD) in one direction a ...


7
Guido Gentner, Anton Schex, Lutz Rapp: Control method and optical data transmission path for compensating changes in SRS-induced power exchange. Siemens Aktiengesellschaft, Bell Boyd & Lloyd, November 13, 2007: US07295782 (3 worldwide citation)

Control method and optical data transmission path having a device for determining the tilting of the spectrum, and having a quick control and slow control for compensating the tilting of the spectrum.


8
Lutz Rapp: Compensation of gain variations in a multistage optical amplifier. Nokia Siemens Networks & Co KG, Dickinson Wright PLLC, Kevin R Spivak, May 19, 2009: US07535632 (3 worldwide citation)

There is described a method for compensation of gain variations in a multistage optical amplifier, for the amplification of an optical wavelength multiplex signal, comprising several amplifier stages in series, each with at least one pumping device. Gain variation occurring after a switching process ...


9
Lutz Rapp: Method for controlling a pump unit while optically amplifying a transmitted wavelength multiplex (WDM) signal. Siemens Aktiengesellschaft, August 8, 2006: US07088496 (2 worldwide citation)

The invention relates to a novel method for controlling a pump unit of a fiber amplifier, with which a transmitted wavelength multiplex (WDM) signal is amplified by at least a distribution of output powers of a plurality of pump sources in order to achieve a favorable noise figure of the amplified W ...


10
Lutz Rapp: Multistage fiber amplifier and method for adapting a pump power of a multistage fiber amplifier. GM Global Technology Operations, Laurence A Greenberg, Werner H Sterner, Ralph E Locher, January 3, 2012: US08089690 (2 worldwide citation)

The invention relates to a multistage fiber amplifier having a first amplifying fiber, at least one further amplifying fiber connected in series with the first amplifying fiber, a pump source, a first pump signal fed to the first amplifying fiber, and a further pump signal fed to the further amplify ...