Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Francisco Soares

Moritz Baier

Martin Schell

Martin Moehrle

Norbert Grote

Victor Dolores Calzadilla

Marlene Zander

Garri Genrich

Ziyang Zhang

A modulator assembly for modulating light comprising a first and a second electro-absorption modulator which each at least substantially only act on a polarization component of incident light; a light generating assembly for generating light which includes a first and a second polarization component; a first electro-absorption modulator for modulating the light generated by the light generating assembly, wherein the first electro-absorption modulator at least substantially only modulates the first polarization component of the light, so that the light exiting from the first electro-absorption modulator includes a modulated and an unmodulated polarization component; a polarization converter for changing the polarization direction of the light exiting from the first electro-absorption modulator. The light exiting from the polarization converter couples into the second electro-absorption modulator and is polarized such that by means of the second electro-absorption modulator a modulation at least substantially is effected only of the previously unmodulated polarization component.

Modulator assembly and method for modulating light

It is provided a method for producing a polarization converter The method comprising the following steps: producing a first converter element which has a base side, an upper side extending parallel to the base side, and a longitudinal side oriented obliquely at an angle &#x3b5;to the base side or a curved longitudinal side; producing a second converter element which has a base side, an upper side extending parallel to the base side, and a longitudinal side oriented obliquely at an angle &#x3b5;to the base side or a curved longitudinal side; arranging the first and the second converter element in series in such a way that the obliquely oriented or curved longitudinal sides point in opposite directions.

Method for producing a polarization converter, polarization converter and polarization converter element

It is provided a method for fabricating an electroabsorption modulated laser comprising generating a single mode laser section and an electroabsorption modulator section, comprising fabricating at least one n-doped layer of the laser section and at least one n-doped layer of the modulator section; generating an isolating section for electrically isolating at least the n-doped layer of the laser section and the n-doped layer of the modulator section from one another. Generating the isolating section comprises epitaxially growing at least one isolating layer and structuring the isolating layer before the generation of the n-doped layer of the laser section and the n-doped layer of the modulator section.

Method for fabricating an elctro-absorption modulated laser and electro-absorption modulated laser

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Berlin, Germany

Francisco Soares