Abstract: The invention relates to an optoelectronic module having at least one leadframe, at least one carrier element connected to the leadframe, and at least one optoelectronic component connected to the carrier element, which component can emit and/or receive light. The invention furthermore relates to a method for producing an optoelectronic module that includes providing at least one leadframe, at least one carrier element and at least one optoelectronic component, connecting the optoelectronic component to the carrier element and connecting the carrier element to the leadframe, and at least partly encapsulating the optoelectronic component, the carrier element and the leadframe with a plastic.

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: The invention relates to a receiver circuit having an optical receiving device, a plurality of amplifiers that are connected to the receiving device, and circuit means or a control circuit for individually activating and deactivating the individual amplifiers. In this case, the amplifiers each differ from one another in at least one parameter such as gain, and only one amplifier is activated at a given point in time, while the other amplifiers are deactivated. The invention makes it possible to match the receiver circuit to widely varying transmission rates.

Abstract: The invention is directed to a laser diode assembly having a laser diode and a support, whereon the laser diode is arranged or formed in one single piece. The laser diode assembly further includes a coupling capacitor integral therewith, wherein the laser diode is subjected to the action of a laser driver circuit via the coupling capacitor associated with the assembly. The invention is also directed to a device for operating a laser diode, wherein the device includes a coupling capacitor integral with a laser diode assembly. The invention enables a reduction in the number of coupling paths between a laser driver circuit and a laser diode assembly, thereby reducing the occurrence of parasitic elements.

Abstract: According to the invention, an optical transmission module includes a transmission element, and a driver which drives the transmission element. The driver uses a transmission signal that is applied to its driver input to produce a drive signal for the transmission element. The transmission module furthermore has a control device which drives the driver, and which furthermore, is programmable. A multiplexing device is connected between a signal input of the optical transmission module, the driver input of the driver and the control device, and can be used to switch an input signal, which is applied to the signal input of the transmission module, to the control device or to the driver.

Abstract: A receiver circuit is disclosed which enables a reception signal fed into the receiver circuit by a reception element to be processed—e.g. amplified—with little to no errors. The receiver circuit has a cascode circuit on an input side, which cascode circuit generates an output signal from the reception signal of the reception element. Control means that act on the cascode circuit are connected to the cascode circuit. The control means are configured in such a way that they counteract an increase in a high level of the output signal of the cascode circuit on account of an excessively large input signal from the reception element.

Abstract: An optical receiver circuit is constructed to be immune to interference from external interference signals. The optical receiver circuit includes a differential amplifier having an optical reception device connected to one input of the differential amplifier. The optical receiver circuit also includes an electrical element for simulating the electrical behavior of the reception device in the illumination-free state. The electrical element is connected to the other input of the differential amplifier.

Abstract: The invention relates to an integrated circuit for controlling a laser diode, comprising a signal input for receiving a data signal; a signal output for connection to the laser diode; a modulator for modulation of the data signal; a current infeed connected to the signal output for the supply of a bias current; a coupling capacitor between the output of the modulator and the signal output in order to form a high pass with the differential resistor of the laser diode. Preferably, the circuit also comprises an active compensation circuit with a low pass connected to the output of the modulator; and a circuit which is connected to the low pass for producing a signal which is inversely proportional to the low pass output voltage and which is added to the output signal or subtracted from the output signal. The low pass can be controlled by a circuit guiding the data signal.

Abstract: The invention relates to a switchable high-pass filter arrangement which has a lower limiting frequency determining the high-pass filter behavior. The arrangement includes a transistor circuit, which has at least one transistor in a common-gate or common-base connection; a capacitive component in series with the input of the transistor circuit; and a programmable device for setting the operating current of the transistor circuit. In this case, the limiting frequency of the high-pass filter arrangement is switchable by means of the programmable device for setting the operating current of the transistor circuit. This creates a switchable high-pass filter arrangement which does not have any changeover switches in the signal path, is suitable for radiofrequency applications and can be produced in a simple manner. The invention furthermore relates to an optical receiver having a high-pass filter arrangement of this type.

Abstract: The invention relates to an optoelectronic arrangement having at least one optoelectronic emission component and a monitor component operatively coupled to the emission component to detect at least some radiation radiated by the emission component. A driver circuit of the arrangement is electrically connected to the emission component and the monitor component and a carrier substrate. In this case, the driver circuit is formed as a circuit integrated into the carrier substrate. The monitor component is likewise integrated into the carrier substrate and the emission component is formed as a separate structural part and is arranged on the carrier substrate.

Abstract: The invention relates to an optical duplex connector which has two optical waveguides, a connector housing, in which the optical waveguides are arranged with a defined lateral spacing in relation to each other, and a triggering mechanism for locking and/or unlocking the optical connector with respect to a coupling partner. The triggering mechanism comprises at least one interacting part, which interacts with at least one corresponding part of the coupling partner for locking and/or unlocking. In this case, the at least one interacting part is arranged, with respect to the plugging direction, in the lateral region between the two optical waveguides or extends along this lateral region. This leads to a particularly compact connector structure.

Abstract: The invention relates to an electrical circuit for a directly modulated semiconductor radiation source having a semiconductor radiation source, to which a modulated current is supplied in a manner dependent on a digital data signal, the falling signal edge of said current exhibiting peaking. According to the invention, provision is made of circuit means which are connected to an electrical contact point of the circuit and which reduce peaking of the falling signal edge when a predetermined value of the forward voltage across the semiconductor radiation source is undershot. This allows higher data rates to be achieved.

Abstract: The invention provides an optoelectronic arrangement having a pluggable optoelectronic module and an electric plug arranged on a host printed circuit board. The optoelectronic module comprises at least one optoelectronic transducer, at least one electronic chip, and a module printed circuit board with a plurality of first electric contacts. The electric plug is electrically connected to the host printed circuit board and has a plurality of second electric contacts which, when the module is plugged in, are in electric contact with the first electric contacts of the module printed circuit board. Also provided are a displacement mechanism for linearly displacing the module into an end position with reference to the electric plug, and a contact mechanism for making contact and breaking contact between the first electric contacts and second electric contacts. It is possible in this case to activate the contact mechanism only when the module is in the end position.

Abstract: The invention relates to an optoelectronic module with at least one carrier element, at least one optoelectronic component that is connected to the carrier element and can emit and/or receive light, and at least one adjusting opening arranged in the carrier element for receiving at least one adjusting means. An exact positioning of the optoelectronic module can be achieved through the adjusting opening arranged in the carrier element. The invention also relates to an optoelectronic system with at least one said optoelectronic module, at least one base part and at least one adjusting means that is arranged in the base part and passes through the at least one adjusting opening of the carrier element of the optoelectronic module.

Abstract: According to the invention, a duty cycle correction device is disclosed. The duty cycle correction device corrects the duty cycle value of a data signal as a function of a digital control signal that is applied to a control input of the duty cycle correction device, and forms a corrected data signal at a signal output. The circuit has a digital duty cycle detector that is connected to the signal output and to the control input of the duty cycle correction device. The circuit determines the actual duty cycle value of the corrected data signal, and produces the digital control signal for the duty cycle correction device such that the discrepancy between the respective actual duty cycle value and a predetermined duty cycle value is a minimum. The duty cycle detector contains a digital integrator for forming the control signal.

Abstract: A control apparatus and a method for controlling access to a memory in an integrated circuit for an electronic module is provided. The invention includes a memory which is split into a plurality of memory areas which contain data relating to the module. The invention also includes a password register which contains at least one password for the manufacturer of the module and at least one password for a user. An access control means stipulates certain conditions for at least one of the memory areas, such as the extent to which the memory area is readable or writeable, where at least one of the following conditions can be stipulated for portions of a memory area: a memory area is readable when the manufacturer password is input; a memory area is readable when the user password is input; a memory area is readable without a password; a memory area is writeable when the manufacturer password is input; a memory area is writeable when the user password is input; a memory area is writeable without a password.

Abstract: A carrier for opto-electronic elements has a carrier plate that is transparent to emitted or absorbed light of an opto-electronic element that is allocated to the carrier. At least one semiconductor structure is inventively deposited on the carrier plate and forms at least one photodiode, whereby the semiconductor structure at least partly absorbs light impinging on the carrier plate. This makes light detection possible in a simple and highly integrated fashion. A transmitting device and a receiving device can be formed with this kind of carrier.

Abstract: A drive device for a light-emitting component including a reference source, which generates a current specification signal specifying a desired current through the light-emitting component, a current mirror circuit, which generates a current equal to a fraction of the actual current through the light-emitting component, and a regulating device having a first input and a second input, the first input being connected to the current mirror circuit and the second input being connected to the reference source. In this case, the regulating device generates a regulation signal that regulates the current through the light-emitting component in such a way that the deviation between the desired current and the actual current becomes minimal.

Abstract: A phase detector circuit for a phase control loop includes two EXOR circuits and an integrating loop filter which are connected to form one circuit. The two EXOR circuits have common load resistors or current sources. The output signals from the EXOR circuits are integrated through the use of two integrators, which are respectively connected in parallel with the common load resistors or current sources. The voltage across the two integrators provides the output voltage of the loop filter. This eliminates the need for an additional differential amplifier and integrator. The phase detector has a low current consumption and can be produced with a simplified circuit technique.

Abstract: The invention pertains to a driving device, for a light-emitting component, which can be universally used and is user-friendly. The driving device for a light-emitting component, particularly for a laser, includes an interface device for inputting a control signal selecting an operating mode of the component. It further includes a control device connected to the interface device, which drives the component with a predetermined operating-mode and temperature-dependent bias current and/or a predetermined operating-mode and temperature-dependent modulation current depending on the operating mode selected and depending on the temperature present at the component or on a temperature proportional thereto.