Waveguide component (100A-F, 200A-E, 300A-B, 400A-F), comprising: 1.1. a waveguide, which is at least partially transparent to light or translucent, and is configured in such a way that light can be conducted at least partially through the waveguide, comprising: 1.1.1. a waveguide core (120, 121, 122, 123, 124), wherein the waveguide core (120, 121, 122, 123, 124) is formed from one element or from multiple elements spatially separated from one another, which comprise at least one waveguide core material or are formed from this; 1.1.2. a first casing region, which comprises at least one electro-optical material or is formed from this, wherein the first casing region is at least partially in reciprocal effect with light conducted in the waveguide, and wherein the first casing region is arranged at least partially around the one element or the multiple elements of the waveguide core (120, 121, 122, 123, 124); and 1.1.3. a second casing region, which comprises at least one dielectric material or is formed from this, wherein the second casing region is arranged partially around the first casing region and/or the waveguide core (120, 121, 122, 123, 124); 1.2. at least two line regions (150, 152), which are at least partially electrically conductive, 1.2.1. wherein an electrical modulation signal is imposed between the line regions (150, 152), 1.2.2. wherein the line regions (150, 152) are arranged at least partially along the optical waveguide in such a way that the line regions (150, 152) lie opposite one another and the waveguide is arranged at least partially between the line regions; 1.2.3. wherein the modulation signal forms an electrical field, of which the field lines penetrate at least partially both the second casing region as well as the first casing region, characterised in that 1.2.4. The dielectric material of the second casing region exhibits in the frequency range of the modulation signal a higher electrical refractive index than the electro-optical material of the first casing region. 1.1. a waveguide, which is at least partially transparent to light or translucent, and is configured in such a way that light can be conducted at least partially through the waveguide, comprising: 1.1.1. a waveguide core (120, 121, 122, 123, 124), wherein the waveguide core (120, 121, 122, 123, 124) is formed from one element or from multiple elements spatially separated from one another, which comprise at least one waveguide core material or are formed from this; 1.1.2. a first casing region, which comprises at least one electro-optical material or is formed from this, wherein the first casing region is at least partially in reciprocal effect with light conducted in the waveguide, and wherein the first casing region is arranged at least partially around the one element or the multiple elements of the waveguide core (120, 121, 122, 123, 124); and 1.1.3. a second casing region, which comprises at least one dielectric material or is formed from this, wherein the second casing region is arranged partially around the first casing region and/or the waveguide core (120, 121, 122, 123, 124); 1.1.1. a waveguide core (120, 121, 122, 123, 124), wherein the waveguide core (120, 121, 122, 123, 124) is formed from one element or from multiple elements spatially separated from one another, which comprise at least one waveguide core material or are formed from this; 1.1.2. a first casing region, which comprises at least one electro-optical material or is formed from this, wherein the first casing region is at least partially in reciprocal effect with light conducted in the waveguide, and wherein the first casing region is arranged at least partially around the one element or the multiple elements of the waveguide core (120, 121, 122, 123, 124); and 1.1.3. a second casing region, which comprises at least one dielectric material or is formed from this, wherein the second casing region is arranged partially around the first casing region and/or the waveguide core (120, 121, 122, 123, 124); 1.2. at least two line regions (150, 152), which are at least partially electrically conductive, 1.2.1. wherein an electrical modulation signal is imposed between the line regions (150, 152), 1.2.2. wherein the line regions (150, 152) are arranged at least partially along the optical waveguide in such a way that the line regions (150, 152) lie opposite one another and the waveguide is arranged at least partially between the line regions; 1.2.3. wherein the modulation signal forms an electrical field, of which the field lines penetrate at least partially both the second casing region as well as the first casing region, characterised in that 1.2.4. The dielectric material of the second casing region exhibits in the frequency range of the modulation signal a higher electrical refractive index than the electro-optical material of the first casing region. 1.2.1. wherein an electrical modulation signal is imposed between the line regions (150, 152), 1.2.2. wherein the line regions (150, 152) are arranged at least partially along the optical waveguide in such a way that the line regions (150, 152) lie opposite one another and the waveguide is arranged at least partially between the line regions; 1.2.3. wherein the modulation signal forms an electrical field, of which the field lines penetrate at least partially both the second casing region as well as the first casing region, characterised in that 1.2.4. The dielectric material of the second casing region exhibits in the frequency range of the modulation signal a higher electrical refractive index than the electro-optical material of the first casing region.