Photonic device, switching device and computing apparatus

WO2025252029A1PCT designated stage Publication Date: 2025-12-11HUAWEI TECH CO LTD
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Patent Information

Application Number
PCT/CN2025/098420
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-06-05
Filing Date
2025-05-30
Publication Date
2025-12-11

AI Technical Summary

Technical Problem

Existing photonic devices are inadequate in terms of integration, energy consumption, and size, making it difficult to meet the high integration and low energy consumption requirements of the communication and information technology fields.

Method used

By employing a photonic device design that includes a substrate, modulation structure, and phase change layer, and utilizing the non-volatile properties of the phase change layer and the resonant wavelength modulation of the photonic crystal microcavity, combined with waveguide structure optimization of optical path length and layout, a small-size, highly integrated, and low-power photonic device can be realized.

Benefits of technology

It achieves small size, high integration, low power consumption and low loss of photonic devices, has wavelength selectivity, is suitable for dynamically controlling optical signal transmission, reduces power consumption and improves integration.

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Abstract

A photonic device (300), a switching device (400) and a computing apparatus (1000). The photonic device (300) comprises: a substrate (1), a modulation structure (2) and a phase-change layer (5), wherein the modulation structure (2) is located on one side of the substrate (1) and is provided with a plurality of photonic crystal holes (21), and the plurality of photonic crystal holes (21) are used for forming a photonic crystal microcavity (22). The phase-change layer (5) is located on the side of the modulation structure (2) that is away from the substrate (1), and the orthographic projection of the phase-change layer (5) on the substrate (1) not only at least partially overlaps with the orthographic projection of the photonic crystal microcavity (22) on the substrate (1), but also surrounds at least a portion of the orthographic projection of at least one photonic crystal hole (21) on the substrate (1). The phase-change layer (5) in the photonic device (300) can modulate the resonant wavelengths of the photonic crystal microcavity (22) and photonic crystal holes (21) on the basis of phase state changes of the phase-change layer (5), such that the photonic device (300) can selectively transmit light of different wavelengths, thereby realizing a photonic device (300) having a low energy consumption, a high degree of integration and a wavelength-selective characteristic, and improving the degree of integration of the photonic device (300).
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Citation Information

Patent Citations

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  • Photonic crystal microarray device for label-free multiple analyte sensing, biosensing and diagnostic assay chips

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  • Fast optical switch and its applications in optical communication

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