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

Claim 1:
2. The photonic chip according to claim 1, wherein the first optical coupling structure comprises:
a second substrate;
a second buried silica layer arranged on the second substrate;
a second lithium niobate thin film waveguide arranged on the second buried silica layer, wherein the second lithium niobate thin film waveguide is shaped as a tapered structure having an end with a larger cross-sectional area connected to the first lithium niobate thin film waveguide and an end with a smaller cross-sectional area connected to the silica waveguide wavelength-division multiplexer;
a second cladding silica layer covering the second buried silica layer and the second lithium niobate thin film waveguide; and
a second top silica layer covering the second cladding silica layer.