High-efficiency thermo-optic switch based on waveguide superlattices with artificial gauge field

Area of Science:

• Photonics and Integrated Optics
• Materials Science

Background:

• Optical switches are essential for data communications, sensing, and computing.
• Existing designs often require significant power and thermal management.

Purpose of the Study:

• To demonstrate an ultra-efficient silicon thermo-optic Mach-Zehnder switch.
• To reduce power consumption in photonic integrated circuits.

Main Methods:

• Experimental demonstration of a silicon thermo-optic Mach-Zehnder switch.
• Utilizing waveguide superlattices with an artificial gauge field.
• Applying a sinusoidal modulation profile to a binary waveguide array.

Main Results:

• Achieved ultra-low power consumption of 1.21 mW.
• Demonstrated efficient light transmission with low crosstalk.
• No additional thermal isolation was required.

Conclusions:

• Geometric design optimization is key for compact, high-efficiency devices.
• This approach significantly reduces power consumption in photonic integrated circuits.
• The method offers scalability for large-scale photonic integrated circuits.