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

Claim 0:
1. A photonic chip comprising a lithium niobate thin film modulator array, a first optical coupling array and a silica waveguide wavelength-division multiplexer, wherein,
the lithium niobate thin film modulator array comprises one or more lithium niobate thin film modulators and is configured to modulate an optical signal;
the first optical coupling array comprises one or more first optical coupling structures, and the first optical coupling structure has one end connected to a corresponding lithium niobate thin film modulator and the other end connected to the silica waveguide wavelength-division multiplexer so as to transmit the modulated optical signal to the silica waveguide wavelength-division multiplexer; and
the silica waveguide wavelength-division multiplexer is configured to perform wavelength-division multiplexing on the modulated optical signal,
wherein the lithium niobate thin film modulator comprises:
a first substrate;
a first buried silica laver arranged on the first substrate;
a first lithium niobate thin film waveguide arranged on the first buried silica laver according to a first preset shape;
a metal electrode arranged on both sides of the first lithium niobate thin film waveguide layer;
a first cladding silica layer covering the first buried silica layer, the first lithium niobate thin film waveguide and the metal electrode, wherein the first cladding silica layer is provided with a through hole to expose the metal electrode;
a terminal resistor connected to the metal electrode through the through hole;
a metal lead wire connected to the metal electrode through the through hole; and
a first top silica layer covering the first cladding silica layer and the terminal resistor.