Patent ID: 11921322
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 17:
18. A method of manufacture of a waveguide comprising:
providing a first layer of a material having a thickness of less than a skin depth of the material for electromagnetic radiation of a first wavelength in a waveguide, wherein
the first layer is positioned within the waveguide and configured with a periodic refractive index such that a first surface polariton wave is excited at an interface between a core region of the waveguide and a cladding region of the waveguide when electromagnetic radiation of a first wavelength is transmitted through the core region; and
a momentum of the first surface polariton wave ks,1 added with an additional momentum caused by the periodic refractive index is matched with a second momentum of the electromagnetic radiation of the first wavelength kc.