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高效的垂直发射合器,由三波相互作用网格提供便利.

Carson G Valdez, Sunil Pai, Payton Broaddus

    Optics letters
    |May 1, 2024
    PubMed
    概括

    研究人员开发了一种用于光子学的新型格子合器,在没有底反射器的情况下实现了接近单元的光合效率. 这一突破简化了使用标准的在绝缘体技术和两个面具的制造.

    科学领域:

    • 综合光子学 综合光子学
    • 纳米光子学 纳米光子学
    • 半导体设备 半导体设备

    背景情况:

    • 对光子集成电路进行高效的光合对于设备性能至关重要.
    • 传统的网格合器通常需要复杂的结构,如底部反射器或多层材料,增加制造复杂性和成本.
    • 标准的在绝缘体 (SOI) 技术被广泛使用,但在它的约束范围内最大限度地提高合效率仍然是一个挑战.

    研究的目的:

    • 设计和数值证明一个网格合器,在正常发生时具有接近单元的合效率.
    • 使用标准的220纳米厚的SOI技术实现高性能,并简化制造工艺.
    • 为了优化网格合器的光谱特征,平衡峰值效率和带宽.

    主要方法:

    • 设计了一个网格合器,利用每个局部周期的三个散射点来打破垂直对称.
    • 采用辅助基于方法的优化来设计合频谱和效率.
    • 使用标准的220纳米厚的SOI制造参数模拟设备性能,只需要两个光刻面具.

    主要成果:

    • 实现了接近单元的合效率,范围从93.4% (-0.3 dB) 到98.6% (-0.06 dB).
    • 在8nm和48nm之间的1dB带宽,以1.55μm为中心.
    • 该设计消除了底部反射器或额外层的需求,简化了制造.

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    结论:

    • 拟议的网格合器设计在光子学方面取得了重大进展,使高效的光合成为可能.
    • 仅使用两个口罩的简化制造过程使其与标准的SOI制造相兼容.
    • 这种方法为高性能光子集成电路提供了可行的解决方案,需要高效的光输入.