Abstract: The invention relates to an apparatus and a method for evaluating spectral properties of a measurement object. It comprises a plurality of light emission units, each emitting light with a predetermined emission spectrum and having a respective output configured for emitting the light with the predetermined emission spectrum onto the measurement object, an optical spectrograph having an input port adapted to receive light from the measurement object and a diffraction unit adapted to distribute different wavelengths of the received light to different output ports comprising the optical detectors, wherein the diffraction unit is adapted to distribute said received light to the respective output ports such that the lights in the respective output port have different wavelengths at different diffraction orders; a signal identification unit adapted to identify which of the light emission units contribute to the respective light in the respective output ports.

Abstract: The invention relates to an apparatus and a method for evaluating spectral properties of a measurement object. It comprises a plurality of light emission units, each emitting light with a predetermined emission spectrum and having a respective output configured for emitting the light with the predetermined emission spectrum onto the measurement object, an optical spectrograph having an input port adapted to receive light from the measurement object and a diffraction unit adapted to distribute different wavelengths of the received light to different output ports comprising the optical detectors, wherein the diffraction unit is adapted to distribute said received light to the respective output ports such that the lights in the respective output port have different wavelengths at different diffraction orders; a signal identification unit adapted to identify which of the light emission units contribute to the respective light in the respective output ports.

Abstract: In a method and an evaluation device for determining the position of a structure located in an object to be investigated by means of X-ray computer tomography, a cutting data record, which images the object in a cutting plane, is determined from a volume data record of the object. The cutting data record is binarized to form a binary data record, in which the structure voxels imaging the structure and the surface voxels imaging an object surface are determined. To determine the position, a distance data record is produced in such a way that a distance value, which characterizes the smallest distance of the respective distance voxel from the surface voxels, is assigned to each distance voxel of the distance data record. The distance voxels corresponding to the structure voxels are then determined and the associated distance values evaluated.

Abstract: In a method and an evaluation device for determining the position of a structure located in an object to be investigated by means of X-ray computer tomography, a cutting data record, which images the object in a cutting plane, is determined from a volume data record of the object. The cutting data record is binarized to form a binary data record, in which the structure voxels imaging the structure and the surface voxels imaging an object surface are determined. To determine the position, a distance data record is produced in such a way that a distance value, which characterizes the smallest distance of the respective distance voxel from the surface voxels, is assigned to each distance voxel of the distance data record. The distance voxels corresponding to the structure voxels are then determined and the associated distance values evaluated.

Abstract: The invention relates to a method and a device for operating an optical transmitting device having a plurality of optical transmitters that can be driven independently. The method includes detecting the parameter values of the individual transmitters, comparing the parameter values determined with one another and/or with a prescribed comparison value, and selecting one of the transmitters for the communication operation of the transmitting device based on the comparison. The method further includes operating the transmitting device with the selected transmitter.

Abstract: A semiconductor component has at least one Peltier element and at least one thermogenerator element that are thermally coupled to one another via a coupling device. By virtue of the thermal coupling of the Peltier element and the thermogenerator element through the coupling device, it is possible to use the Peltier element to cool a microstructure, in particular an optoelectronic component (e.g. a laser diode). Efficient temperature regulation and efficient operation of an optoelectronic component are thus possible.

Abstract: An electrooptical transmitting and/or receiving module has a lead frame and an optoelectronic transducer mounted thereon. The lead frame and the optoelectronic transducer are potted by a shaped body made from transparent, formable material. Introduced into the shaped body is a reflector element. A radiation beam emitted by a transmitter, or a received radiation beam to be directed onto a receiver is deflected at a prescribed angle by the reflector element. The module can be used in an electrooptical transmitting and/or receiving unit which is constructed as a sidelooker. A method is also provided for molding the electrooptical transmitting and/or receiving module.

Abstract: An electro-optical data transmission module comprises at least a first SMT housing (11) and a second SMT housing (13). A surface-emitting laser light emitter chip is accommodated in the first SMT housing (11), and a light-sensitive light receiver chip is accommodated in the second SMT housing (13). By virtue of the modular design which is formed from at least two individual SMT housings, the electro-optical data transmission module can be implemented with a minimum size.

Abstract: A transmission and reception device, in which the transmission device and the reception device and the input/output end of a glass fiber are disposed optically in series with respect to one another. A laser diode is disposed on a central part of a photosensitive surface and the input/output end of the glass fiber is in turn adjusted in front of its end face. As a result of a cylindrical symmetry of the photosensitive surface and of the laser diode with respect to a fiber axis, a maxima of the coupling curves coincide with the fiber axis, so that a lateral fiber offset leads to only a moderate change in coupling efficiency.

Abstract: A module essentially includes a module housing, into which is introduced a lead frame. An electro-optical transducer is mounted on the lead frame. The interior of the module housing is filled with a transparent potting compound. A plug receptacle part is moulded onto the outer housing wall and has a defined outer contour. Situated in the interior of the plug receptacle part is an optical waveguide piece, which proceeding from the surroundings of an outer area of the plug receptacle part, extends through the interior of the plug receptacle part and through a housing opening right into the housing interior. The optical waveguide piece is optically coupled to the electro-optical transducer. An optical waveguide plug interacting with the module has a sleeve-shaped plug section corresponding to the plug receptacle part.

Abstract: A method for producing an electrooptical module having a molding made of a translucent, moldable material, includes positioning a support with an electrooptical transducer in a mold. The support with the transducer is encased by a moldable material to form the molding and the mold has at least one functional surface for coupling. In order to permit and facilitate the production of an electrooptical transducer with a very precisely positioned functional surface and a high mechanical strength, a dead mold is used in the form of a module housing having an opening for the introduction of the support and a coupling region for a coupling partner. A housing part which is located in the coupling region is configured to correspond to the functional surface. A mold for producing an electrooptical module, and an electrooptical module, are also provided.

Abstract: An arrangement is composed of at least two waveguides, which are coaxially optically coupled to one another integrated on the surface of the substrate with different degrees of wave guidance. The axis of the more weakly-guiding waveguide is straight and the axis of the more strongly-guiding waveguide comprises a curved section.

Abstract: An integrated optical arrangement operated as a switch composed of at least three ridge waveguides on a substrate, the third ridge waveguide is utilized for an infeed of an optical waveguide proceeding between two parallel ridge waveguides forming the first and second waveguides having either a contacted pn-junction or a contacted pin-junction. As a result of asymmetrical switching of the junctions, the optical wave is coupled over into one or the other of the first and second waveguides. The advantage over traditional directional coupler switch structures are complete symmetry of the two switch conditions, "digital switching behavior", enhanced separation of the output waveguide, low switching losses and greater manufacturing tolerances, reduced polarization sensitivity and increased optical bandwidth.

Abstract: An apparatus for converting an optical wave having a relatively smaller cross section into an optical wave having a relatively larger cross section which may be manufactured in a monolithically integrated fashion in a simple way. In this apparatus, a wave-guiding, rib-shaped taper having an end for coupling the optical wave with a small cross section into the taper is fashioned on a rib of a rib waveguide which guides the optical wave. An optical wave having a larger cross section is fashioned thereon in a longitudinal direction of the rib. The infeed end of the taper and the taper itself has a smaller breadth in comparison to the breadth of the rib of the rib waveguide. Proceeding from this end, the taper broadens and decreasingly tapers in thickness in the longitudinal direction of the rib waveguide.

Abstract: An integrated optical directional coupler is formed of two strip waveguides integrated on a substrate. A strip waveguide section in a coupling section of the directional coupler is designed as a controllable strip waveguide. The strip waveguides outside of this section are passive strip waveguides. In order to guarantee a largely polarization-dependent function of this coupler and of an optical switch realized therewith, the passive waveguides comprise a defined, different strip waveguide structure than the controllable strip waveguide.

Abstract: An arrangement for converting an optical wave having a small spot width into an optical wave having a larger spot width comprises a first integrated optical waveguide to which a semiconductor component may be coupled and is embedded in a second, larger optical waveguide to which a monomode fiber is to be coupled. The first optical waveguide preferably tapers as it extends into the second waveguide and ends at a distance from the end face of the second waveguide so that a first optical wave in the first waveguide will spread as a consequence of the first optical waveguide becoming thinner until the wave guidance is assumed by the second waveguide. The coupler enables coupling monomode fibers to optical semiconductor components without requiring microlenses for matching the various modes.