基于扩散模型的光子晶体的反向设计,用于定制的折射
Ruotian Lin1,2,3, Cheng Zhang1,2,3, Wangqi Mao2,3
1Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China.
Nanophotonics (Berlin, Germany)
|December 22, 2025
概括
一个新的扩散模型框架使 photonic 晶体结构的精确反向设计能够用于集成的 photonic 系统. 这种方法克服了传统方法和现有的生成模型的局限性,提供了高精度和定制性.
科学领域:
- 光子学和材料科学 材料科学
- 在工程领域的人工智能.
背景情况:
- 光子晶体 (PhC) 对集成光子系统至关重要.
- 传统的PhC设计方法缺乏效率和灵活性.
- 现有的深度学习模型 (GAN,VAE) 面临培训不稳定性和噪音问题.
研究的目的:
- 为高精度,定制的PhC折射结构引入一种新的生成设计框架.
- 为了解决PhC逆向设计当前深度学习方法的局限性.
主要方法:
- 开发了一个基于扩散模型的生成框架,用于PhC反向设计.
- 构建了一个PhC等频轮 (64x64分辨率) 的数据集,包括频率,角度和图案.
- 整合了扩散模型与U-Net架构进行结构生成.
主要成果:
- 成功地生成了定制的PhC结构,并且具有高精度.
- 实现了对发生角度 (0°-80°) 和折射角度 (-80°至80°) 的细胞模式的准确预测.
- 在1000个测试结构中,85%的折射角度误差低于0.1 (L2标准),显示出高稳定性和精度.
结论:
- 基于扩散模型的框架为光子设备的自动反向设计提供了一个有希望的解决方案.
- 该方法为多尺度光子应用提供了高稳定性,精度和适应性.
- 扩大数据集可以进一步增强各种PhC设计的解决方案空间.
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