Arrangement comprising a fiber-optic waveguide

1. An arrangement comprising a fiber-optic waveguide and a detection device, wherein the fiber-optic waveguide comprises a core region and a cladding region surrounding the core region, wherein the core region has a higher refractive index than the cladding region,

wherein the detection device is adapted to detect damage to the fiber-optic waveguide,

wherein the fiber-optic waveguide has a first end and a second end, wherein a converter material is present at the second end, wherein the converter material converts radiation having a first wavelength that is transported through the fiber-optic waveguide into light having a second wavelength, and a first detector as part of the detection device is present at the first end, wherein the first detector detects the light having the second wavelength, and

wherein a reflection layer is fitted at the second end between the converter material and the fiber-optic waveguide, wherein the reflection layer is transparent to the radiation having the first wavelength and reflects part of the light having the second wavelength.

2. The arrangement as claimed claim 1 , wherein a first electrically conductive connection is present as part of the detection device and runs in or on the cladding region of the fiber-optic waveguide, and

wherein a functionality of said first electrically conductive connection indicates the functionality of the fiber-optic waveguide.

3. The arrangement as claimed in claim 2 , wherein the fiber-optic waveguide has a principal axis, and

wherein the first electrically conductive connection runs along the principal axis of the fiber-optic waveguide.

4. The arrangement as claimed in claim 2 , wherein the first electrically conductive connection is more brittle than the core region.

5. The arrangement as claimed in claim 2 , wherein a second electrically conductive connection is additionally present and runs in or on the fiber-optic waveguide.

6. The arrangement as claimed in claim 5 , wherein the second electrically conductive connection forms an electric circuit with the first electrically conductive connection, and

the arrangement further comprises means for checking the functionality of said first electrically conductive connection which detects a current flowing in the electric circuit.

7. The arrangement as claimed in claim 5 , wherein the second electrically conductive connection runs at a distance from the first electrically conductive connection, and

the arrangement further comprises means for checking the functionality of said first electrically conductive connection which detects a voltage present between the first and second electrical connections.

8. A light-emitting device comprising the arrangement as claimed in claim 1 , and

a radiation source present at the first end of the fiber-optic waveguide, which radiation source emits the radiation having the first wavelength.

9. The light-emitting device as claimed in claim 8 , wherein the radiation source comprises a short-wave radiation source.

10. The arrangement as claimed in claim 1 , wherein the fiber-optic waveguide comprises fibers containing a material selected from:

glass and plastic.

11. The arrangement as claimed in claim 1 , wherein a radiation source is present at the first end of the fiber-optic waveguide, and wherein the radiation source emits said radiation having the first wavelength and an optical component is present at the second end, wherein the optical component interacts with the converted light or with the radiation emerging from the fiber-optic waveguide.

12. The arrangement as claimed in claim 11 , wherein the second end of the fiber-optic waveguide is connected to a transparent body in light-guiding fashion.

13. The arrangement as claimed in claim 8 , wherein the arrangement emits light that is a mixture of light having the first wavelength and light having the second wavelength.

14. The arrangement as claimed in claim 1 , wherein the converter material comprises nanoparticles.