Patent ID: 11860502
Assignee: FUNDACIÓ INSTITUT DE CIÈNCIES FOTÒNIQUES
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. The electro-optical modulator according to claim 17, further comprising a fourth electrode located between the second and third electrodes along the X-direction, wherein the upper face of the second optical waveguide branch is located at, below or above a location between said fourth and third electrodes, along the X-direction; and wherein:
said further bottom graphene sheet has a first end electrically connected to the third electrode and extends therefrom along the X-direction, over at least said portion of the upper face of the semiconductor substrate and over at least said portion of the second optical waveguide branch;
said further sheet of said first dielectric material is integral with said sheet of said first dielectric material; and
said further top graphene sheet has a first end electrically connected to the fourth electrode and extends therefrom along the X-direction without reaching the third electrode.