MoS₂ hybrid integrated micro-ring resonator phase shifter based on a silicon nitride platform

Area of Science:

• Photonics and Materials Science
• Integrated Optics
• Nanotechnology

Background:

• Micro-ring resonators are key components in photonic integrated circuits.
• Efficient phase modulation is crucial for optical communication networks.
• Two-dimensional layered materials offer unique optoelectronic properties.

Purpose of the Study:

• To demonstrate a low-power, compact micro-ring phase shifter.
• To achieve efficient active phase modulation using hybrid integration.
• To establish a low-loss silicon nitride platform for integrated optics.

Main Methods:

• Hybrid integration of few-layer molybdenum disulfide (MoS₂) film with a micro-ring phase shifter using a wet transfer method.
• Utilizing a low-loss silicon nitride waveguide platform.
• Experimental characterization of phase modulation efficiency and half-wave-voltage-length product.

Main Results:

• Achieved a tuning efficiency of 5.8 pm V^-1 at a center wavelength of 1545.294 nm.
• Demonstrated a low half-wave-voltage-length product of 0.09 V cm.
• Successfully established a hybrid-integration-based active phase modulation scheme.

Conclusions:

• The developed device offers a promising solution for active phase modulation in integrated optical communication networks.
• Hybrid integration of 2D materials with silicon nitride waveguides enables high-performance photonic devices.
• The low-power, compact design is suitable for advanced optical communication systems.