Waveguide structures
The present disclosure relates to semiconductor structures and, more particularly, to waveguide structures with metamaterial structures and methods of manufacture. The structure includes: at least one waveguide structure; and metamaterial structures separated from the at least one waveguide structure by an insulator material, the metamaterial structures being structured to decouple the at least one waveguide structure to simultaneously reduce insertion loss and crosstalk of the at least one waveguide structure.
1. A structure comprising:
a plurality of planar waveguide structures each of which are separated from one another by an insulator material; and
metamaterial structures separated from the plurality of planar waveguide structures and one another by the insulator material, the metamaterial structures are between the plurality of planar waveguide structures, and the metamaterial structures being structured to decouple the plurality of planar waveguide structures,
wherein the plurality of planar waveguide structures are parallel to one another and make no contact with one another, and the metamaterial structures are composed of geometric shapes provided between and in a same plane as the plurality of planar waveguide structures.
2. The structure of claim 1 , wherein the plurality of planar waveguide structures and the metamaterial structures are composed of a same material on a same level of a device.
3. The structure of claim 2 , wherein the plurality of planar waveguide structures and the metamaterial structures are composed of Si or SiN material.
4. The structure of claim 1 , wherein the metamaterial structures and the plurality of planar waveguide structures are composed of semiconductor on insulator material suitable.
5. A structure comprising:
a plurality of planar and parallel waveguide structures; and
metamaterial structures separated from the plurality of planar and parallel waveguide structures and one another by an insulator material, the metamaterial structures being between the plurality of planar and parallel waveguide structures, the metamaterial structures being on a same level of the plurality of planar and parallel waveguide structures.
6. The structure of claim 5 , wherein the plurality of planar and parallel waveguide structures are composed of a same material, and the metamaterial structures are around the planar and parallel waveguide structures along a length thereof, and make no contact with an of the plurality of planar and parallel waveguide structures.
7. The structure of claim 6 , further comprising additional metamaterial structures provided on a different level of the plurality of planar and parallel waveguide structures, wherein the additional metamaterial structures are composed of a different material than the plurality of planar and parallel waveguide structures and the metamaterial structures.
8. The structure of claim 5 , wherein the metamaterial structures are on two different levels than the plurality of planar and parallel waveguide structures, wherein the metamaterial structures are composed of a same material, and the metamaterial structures are composed of a different material than the plurality of planar and parallel waveguide structures.
9. The structure of claim 5 , wherein:
the plurality of planar and parallel waveguide structures are in a same plane as the metamaterial structures; and
the plurality of planar and parallel waveguide structures and the metamaterial structures are each composed of semiconductor material.
10. A structure comprising:
a plurality of planar waveguide structures each of which are separated from one another by an insulator material; and
metamaterial structures separated from the plurality of planar waveguide structures and one another by the insulator material, the metamaterial structures are between the plurality of planar waveguide structures, and the metamaterial structures being structured to decouple the plurality of planar waveguide structures,
wherein the metamaterial structures are separated from one another by airgaps between the metamaterial structures.