Robert Boschgmbh

Ant Nachrichtentechnik Gmbh

Ulrich Kohn

Roland Mueller-Fiedler

Albrecht Kuke

Heiner Hauer

Bernhard Schwaderer

Friedrich-Christian Tischer

Ernst-Ulrich Scheuing

A device with an optical fiber amplifier, wherein a control circuit is provided for stabilizing the amplification. In the control circuit, a supplemental optical signal (z) is supplied to the input of the fiber amplifier within its optical amplification bandwidth. The level of the former is controlled by a control member (Q), to whose first input a first measuring signal (m1) is supplied, which represents the level of an optical signal, amplified by the fiber amplifier (V), from a first area of the amplification bandwidth. A second measuring signal (m2) is present at the second input of the control member, which represents the level of a not yet amplified optical signal from the second area of the amplification bandwidth.

Device with optical fibre amplifier

Fibre-optic communications-transmission method and intermediate repeater

Transmission station, intermediate repeater and receiver station for a

The optical amplifier device for an optical transmission system with bidirectional wavelength multiplex to a light transmission wave guide includes a first optical amplifier (OV1) for amplifying signals of a first wavelength (.lambda..sub.1) in a first direction; a second optical amplifier (OV2) for amplifying signals of a second wavelength (.lambda..sub.2) in a second direction; a first wavelength selective coupler (WDM1) connecting the input of the first optical amplifier (OV1) and the output of the second optical amplifier (OV2) with a light transmission wave guide (U) and a second wavelength selective coupler (WDM2) connecting the input of the second optical amplifier (OV2) and the output of the first optical amplifier (OV1) with the light transmission wave guide (U). Because of reflections noise amplification due to resonance would be considerable but according to the invention the noise resonances are prevented since the wavelength selective couplers (WDM1, WDM2) have a signal attenuation of 3 dB at different wavelengths.

Optical amplifier device

The invention relates to an optical fiber amplifier having an amplification waveguide, having a pump source and having a wavelength-selective coupler. The pump light from the pump source is coupled into the amplification waveguide via the coupler. A carrier substrate (GS) is provided, on which passive (eg. couplers, dividers) and active components (eg. amplification waveguides) of the fiber amplifier are integrated. In addition, a silicon carrier (ST1) is provided, which is fitted to one end of the carrier substrate (GS). The silicon carrier (ST1) has anisotropically etched grooves with optical components. The pump source is fixed on the silicon carrier (ST1). The optical components on silicon carrier (ST1) and carrier substrate (GS) are adjusted in relation to one another.

Optical fiber amplifier

Growing community of inventors

Backnang, Germany

Ulrich Kohn