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All-photon logic gate calculation based on phase change materials
Jiapeng Sun1,2, Jinhua Mou1,2, Jiaxing Gao1,2
1Harbin Engineering University, Harbin 150001, China.
Nanophotonics (Berlin, Germany)
|November 7, 2025
Summary
This study introduces a novel all-photonic non-volatile fiber device using Ge2Sb2Te5 (GST) for advanced photonic networks. The device offers ten-level data storage and enables logical gate functions, overcoming limitations of current optical modulators.
Area of Science:
- Photonics
- Materials Science
- Optical Communications
Background:
- Contemporary photonic information networks require efficient information modulation.
- Existing optical modulators face challenges including complexity, cost, insertion loss, and crosstalk.
Purpose of the Study:
- To propose a novel all-photonic non-volatile fiber device to address limitations of current optical modulators.
- To demonstrate ten-level data storage and logical gate functions using the proposed device.
Main Methods:
- Development of an all-photonic non-volatile fiber device integrating a dual peanut-shaped microstructure with Ge2Sb2Te5 (GST).
- Manipulation of GST state via external laser modulation for data storage.
- Configuration of the device in series and parallel to implement logical gate functions.
Main Results:
- The all-photonic modulator exhibits non-volatility, a 21 dB contrast ratio, and 0.2 dB repeatability.
- Demonstrated ten-level data storage with repeatable or random access.
- Successful implementation of "AND" and "OR" logical gate functions.
Conclusions:
- The novel GST-based all-photonic fiber device offers a promising solution for advanced photonic information networks.
- The device's non-volatility, high performance, and logical gate capabilities present significant potential for information network control.
