Sicoya Gmbh

Danilo Bronzi

Marco Vitali

Ahmet Mert Özdemir

An exemplary embodiment of the invention relates to an electrical amplifier comprising a differential preamplifier having a first output port and a second output port; and a downstream amplifier stage having a first output unit and a second output unit; wherein the first output unit is connected to the first output port of the differential preamplifier and the second output unit is connected to the second output port of the differential preamplifier; and wherein a negative impedance converter is electrically located in at least one of said differential preamplifier and said downstream amplifier stage.

Electrical amplifier

The invention relates, inter alia, to a photonic component (), which has an interference device (), which has at least one input and at least a first and a second output. According to the invention, the component also comprises: a first grating coupler (GC), which has a first and a second grating coupler output and is connected to the first output of the interference device by means of a grating coupler input, a second grating coupler (GC), which has a first and a second grating coupler output and is connected to the second output of the interference device by means of a grating coupler input, a first photodetector (PD), which is connected to the first grating coupler output of the first grating coupler, a second photodetector (PD), which is connected to the first grating coupler output of the second grating coupler, and a control device (), which is connected to the first and second photodetectors and, on the basis of the photo signals (I, I) of the two photodetectors or an evaluation signal formed by means of the photosignals, forms at least one control signal (ST, ST) for controlling the interference device, wherein the first and second grating couplers are arranged, in particular integrated, in the same chip level (E) of a chip () of the component and wherein, in the case of the first and second grating couplers, the second grating coupler outputs each form a coupling path out of the chip level, namely at an angle of between 70 and 110 degrees to the chip level.

Photonic component

An exemplary embodiment of the present invention relates to an electro-optic modulator for modulating optical radiation. The electro-optic modulator comprises at least one upstream modulation subunit, at least one downstream modulation subunit and at least one phase-matching unit. The upstream and downstream modulation subunits are optically connected in series such that the optical radiation passes the downstream modulation subunit after passing the upstream modulation subunit. An electrical upstream modulation signal may be applied to the upstream modulation subunit, and an electrical downstream modulation signal may be applied to the downstream modulation subunit. The phase-matching unit is configured to delay the downstream modulation signal such that a phase difference between the upstream modulation signal and the downstream modulation signal is minimal.

Electro-optic modulators and methods for modulating optical radiation

An exemplary embodiment of the present invention relates to an electrical amplifier comprising a differential preamplifier having a first output port and a second output port; a first output unit connected to the first output port of the differential preamplifier and a second output unit connected to the second output port of the differential preamplifier, the first and second output units being electrically arranged in parallel relative to each other; and a positive feedback loop that couples the first and second output units and comprises a first capacitor and a second capacitor; wherein each of the first and second output units comprises an emitter-follower unit and a bias transistor that is connected in series with the emitter-follower unit of its output unit; wherein an emitter of the emitter-follower unit of the first output unit is connected to a base of the bias transistor of the second output unit through the first capacitor of the positive feedback loop; and wherein an emitter of the emitter-follower unit of the second output unit is connected to a base of the bias transistor of the first output unit through the second capacitor of the positive feedback loop.

Growing community of inventors

Berlin, Germany

Danilo Bronzi