Patent ID: 11874497
Assignee: INSTITUTE OF SEMICONDUCTORS, CHINESE ACADEMY OF SCIENCES
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. A method of preparing a photonic chip, comprising:
S1 of preparing a substrate comprising a first substrate, a second substrate and a third substrate;
S2 of preparing a buried silica layer on the substrate, wherein the buried silica layer comprises a first buried silica layer, a second buried silica layer and a third buried silica layer;
S3 of preparing a first lithium niobate thin film waveguide on the first buried silica layer, and preparing a tapered second lithium niobate thin film waveguide on the second buried silica layer;
S4 of preparing a metal electrode on both sides of the first lithium niobate thin film waveguide;
S5 of preparing a first cladding silica layer on the first buried silica layer, the first lithium niobate thin film waveguide and the metal electrode, preparing a second cladding silica layer on the second lithium niobate thin film waveguide, and preparing a silica waveguide on the third buried silica layer;
S6 of preparing a terminal resistor and a metal lead wire on the first cladding silica layer, and connecting the terminal resistor and the metal lead wire to the metal electrode through a through hole in the first cladding silica layer;
S7 of preparing a first top silica layer on the first cladding silica layer and the terminal resistor, preparing a second top silica layer on the second cladding silica layer, and preparing a third top silica layer on the silica waveguide.