Waveguide arrangement having a substrate and at least one strip-shaped strip waveguide made from a waveguiding layer material, wherein the strip waveguide extends in the shape of a strip along a longitudinal direction and can guide waves along its longitudinal direction in such a way that the wave propagation direction corresponds to the longitudinal direction of the strip waveguide, - wherein the refractive index of the substrate is greater than the refractive index of the layer material, and - wherein the strip waveguide forms a waveguide bridge which is arranged above a recess in the substrate and is at least regionally spatially separated there from the substrate, and - wherein the waveguide bridge is supported by at least one support which consists of substrate material, extends from the bottom of the recess to the waveguide bridge and supports the waveguide bridge from below, - wherein the layer material has, outside the region of the strip waveguide, at least one bearing section (40, 50) in which the layer material is carried indirectly or directly by the substrate, and the layer material forms, in the neighbouring region next to the waveguide, a multiplicity of lateral holding webs (150, 160) which - extend transversely, in particular perpendicularly, to the longitudinal direction of the strip waveguide and therefore transversely to the wave propagation direction from the bearing section (40, 50) to the waveguide bridge, and - hold from the side the waveguide overhanging the substrate, - wherein each of the holding webs (150, 160) is respectively bounded by two neighbouring holes (110, 120), lying behind one another along the wave propagation direction, which extend through the layer material into the substrate, separate the respective holding web (150, 160) from the underlying substrate and are connected to the recess under the waveguide bridge. - wherein the refractive index of the substrate is greater than the refractive index of the layer material, and - wherein the strip waveguide forms a waveguide bridge which is arranged above a recess in the substrate and is at least regionally spatially separated there from the substrate, and - wherein the waveguide bridge is supported by at least one support which consists of substrate material, extends from the bottom of the recess to the waveguide bridge and supports the waveguide bridge from below, - wherein the layer material has, outside the region of the strip waveguide, at least one bearing section (40, 50) in which the layer material is carried indirectly or directly by the substrate, and the layer material forms, in the neighbouring region next to the waveguide, a multiplicity of lateral holding webs (150, 160) which - extend transversely, in particular perpendicularly, to the longitudinal direction of the strip waveguide and therefore transversely to the wave propagation direction from the bearing section (40, 50) to the waveguide bridge, and - hold from the side the waveguide overhanging the substrate, - wherein each of the holding webs (150, 160) is respectively bounded by two neighbouring holes (110, 120), lying behind one another along the wave propagation direction, which extend through the layer material into the substrate, separate the respective holding web (150, 160) from the underlying substrate and are connected to the recess under the waveguide bridge.