Patent ID: 11886055
Assignee: MELLANOX TECHNOLOGIES, LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. A modulator comprising:
a substrate;
a waveguide material deposited onto an etched layer the substrate and formed into a waveguide column;
the etched layer disposed between the substrate and the waveguide material;
a first contact layer doped with a P-type dopant and deposited on a first side of the waveguide column and a first side of the etched layer, wherein the P-type dopant extends from the first contact layer into a first portion of the waveguide column proximate to the first side;
a second contact layer doped with an N-type dopant and deposited on a second side of the waveguide column and a second side of the etched layer, wherein the N-type dopant extends from the second contact layer into a second portion of the waveguide column proximate to the second side; and
first and second contacts, the first contact being in electrical communication with the first contact layer and the second contact being in electrical communication with the second contact layer,
wherein the first contact layer and the second contact layer each consist of one or more materials that are different from the waveguide material.