Integrated electronic controller for dynamic self-configuration of photonic circuits.

Area of Science:

• Photonics
• Integrated Circuits
• Electronics Engineering

Background:

• Reconfigurable photonic integrated circuits (PICs) require electronic control for runtime adjustments and compensation of signal degradations.
• Increasing complexity of PICs necessitates scalable electronic control solutions.
• Existing control methods may not adequately address the demands of advanced PICs.

Purpose of the Study:

• To present a novel electronic application-specific integrated circuit (ASIC) for the dynamic reconfiguration of photonic integrated circuits (PICs).
• To demonstrate a scalable and efficient electronic control system for complex photonic architectures.
• To validate the ASIC's capability in real-time control and signal compensation for PICs.

Main Methods:

• Design and implementation of a multi-channel electronic ASIC with independent control for each optical component.
• Integration of multiple parallel local feedback loops for comprehensive control.
• Real-time experimental validation using a 16-channel silicon photonics adaptive universal beam coupler.

Main Results:

• The ASIC successfully achieved automatic coupling of arbitrary input beams to single-mode waveguides.
• Dynamic compensation of beam wavefront distortions was demonstrated in real-time.
• A 50 Gbit/s signal was successfully transmitted through an optical free-space link, showcasing the system's performance.
• The electronic chip exhibited low power consumption and compact form factor.

Conclusions:

• The developed ASIC provides a scalable and effective electronic control solution for complex reconfigurable PICs.
• The system's ability to perform real-time adjustments and compensation enhances PIC functionality and performance.
• This approach offers a promising paradigm for extending control capabilities to larger and more sophisticated photonic systems.