Patent ID: 9140955
Filing Date: 2015-09-22
Classification: G02F

Abstract:
1. A Mach-Zehnder modulator comprising: a first optical waveguide forming a first modulator arm and a second optical waveguide forming a second modulator arm of the Mach-Zehnder modulator; an electrode arrangement comprising a plurality of first waveguide electrodes for applying a voltage across the first optical waveguide and a plurality of second waveguide electrodes for applying a voltage across the second optical waveguide, at least one electrically conductive connecting element generating a short-circuit between at least one of the first waveguide electrodes and at least one of the second waveguide electrodes, wherein the electrode arrangement is a travelling wave electrode arrangement further comprising a first and a second electrical line extending at least partially parallel to the first and second optical waveguide, wherein the first and the second waveguide electrodes are connected to the first and second electrical lines via connecting structures, wherein at least one voltage source or driver unit is connected to the first and second electrical line, wherein the first and second electrical lines and thus the first and second waveguide electrodes have different electrical potentials, and wherein the first waveguide electrodes are arranged with a distance from one another on top of the first optical waveguide and the second waveguide electrodes are arranged with a distance from one another on top of the second optical waveguide, wherein a middle portion of the first electrical line extends on a side of the first optical waveguide that faces away from the second optical waveguide and the second electrical line extends on a side of the second optical waveguide that faces away from the first optical waveguide.