Patent ID: 11940707
Assignee: SHANGHAI JIAO TONG UNIVERSITY
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 1:
2. The high-speed and low-voltage electro-optical modulator with the Mach-Zehnder interference structure based on the lithium niobate-silicon wafer according to claim 1, wherein the waveguide structure component comprises
the two multimode interferometers,
the four spot-size converters,
the two thermal modulation phase shifters,
the two electrical modulation phase shifters,
the DC bias electrodes and the traveling-wave electrodes,
wherein the two multimode interferometers respectively serve as a multiplexer and a demultiplexer;
two output ports of the multiplexer are respectively connected to ends of the two thermal modulation phase shifters, and the other ends of the two thermal modulation phase shifters are respectively connected to ends of the two spot-size converters, the other ends of the two spot-size converters are respectively connected to ends of the two electrical modulation phase shifters, the other ends of the two electrical modulation phase shifters are respectively connected to ends of the other two spot-size converters, and the other ends of the two spot-size converters are connected to the multiplexer.