Electro-optical modulator devices

• Main Authors: Choi, Jung Han, Velthaus, Karl-Otto, Rausch, Marko, Yan, Lei
• Format: Patent
• Language: English; French; German
• Published: 21.03.2018
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The invention relates to an electro-optical modulator device, comprising at least one electro-optical phase modulator (100) having one optically active optical waveguide (112) and an electrode arrangement (1) for applying a voltage across the active optical waveguide (112), wherein the electrode arrangement (1) comprises a plurality of waveguide electrodes (113) arranged on top of capacitive segments (114) formed by the optically active waveguide (112); and a plurality of capacitive elements. According to the invention, the modulator further comprises a plurality of driver units (30, 30a-d) for supplying a voltage to the electrode arrangement (1); and electrical connections between the driver units (30, 30a-d) and the electrode arrangement (1), wherein the waveguide electrodes (113) are capacitively coupled to the driver units (30, 30a-d) via the capacitive segments (114) and the capacitive elements and the electrical connections, wherein each one of the electrical connections between the driver units (30, 30a-d) and the electrode arrangement (1) comprise a flexible coplanar strip line (50, 50a-d).