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Phase-modulated photonic digital logic processing based on optically injected microdisk lasers.

Qiang Zhang, Shuiying Xiang, Yanan Han

|November 14, 2025

Summary

This summary is machine-generated.

Researchers developed a novel photonic neuromorphic architecture using phase-modulated microdisk lasers for digital logic. This system enables low-power optical computing by generating programmable spikes for basic logic gates.

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Area of Science:

Photonics and Neuromorphic Engineering
Optical Computing Architectures

Background:

Microdisk lasers exhibit unique optical properties suitable for complex signal processing.
Photonic neuromorphic systems offer potential for high-speed, low-power computation.

Purpose of the Study:

To propose and demonstrate a phase-modulated photonic neuromorphic architecture.
To achieve digital logic operations using optically injected microdisk lasers.

Main Methods:

Utilizing phase-coded optical pulses to perturb the injection-locked state of microdisk lasers.
Disrupting the symmetry of counter-propagating whispering gallery modes to trigger spiking.
Precisely modulating perturbation phases to generate programmable spikes for logic gates.

Main Results:

Demonstrated the first phase-modulated digital processing in microdisk lasers.
Successfully realized basic digital logic gates through distinct phase-encoding schemes.
Achieved programmable spiking excitability by controlling optical perturbations.

Conclusions:

The proposed architecture provides a low-power and integrated photonic neuromorphic paradigm.
This work paves the way for general-purpose optical computing using microdisk lasers.
Phase modulation offers a novel approach for digital processing in photonic systems.