概括
这项研究引入了一个反向设计的化 (SiN) 波导合器. 这种新的方法使宽带3dB的功率在100纳米范围内进行分割,并具有出色的实验验证.
科学领域:
- 光子学和波导工程 波导工程
- 纳米光子和元材料
- 计算电磁学 计算机电磁学
背景情况:
- 多模干扰 (MMI) 合器是必不可少的光子元件.
- 在MMI合器中实现宽带运行和精确的功率分割仍然具有挑战性.
- 反向设计为优化复杂的光子结构提供了一种强大的方法.
研究的目的:
- 提出并验证使用化 (SiN) 波导的反向设计的宽带多模干扰 (MMI) 合器.
- 展示基于附加灵敏度分析和二元化的一种制造友好的设计方法.
- 为了实验验证设备在宽带3dB分割方面的性能.
主要方法:
- 使用反向设计与附加灵敏度分析来优化波导体几何.
- 在MMI区域内调节波导宽度并优化输入/输出端口.
- 为了简化制造,二元化折射率分布.
- 制造设计的SiN波导合器并测量其传输光谱.
主要成果:
- 通过调节MMI区域宽度,在100nm波长范围内实现了非常平坦的光谱响应.
- 实验传输光谱与模拟结果有很好的一致性.
- 通过实验成功地证明了100nm宽带的3dB分裂.
结论:
- 拟议的反向设计方法对于创建宽带MMI合器是有效的.
- 折射率分布的二元化使实际制造成为可能.
- 开发的SiN MMI合器显示了需要宽带性能的集成光子应用的巨大潜力.
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