概括
研究人员使用反向设计开发了一种超紧的化极化束分离器 (PBS). 这种紧的PBS为光子集成电路提供了高性能和制造耐受性.
科学领域:
- 光子学是指光子学的使用方法.
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 极化束分离器 (PBS) 是集成光子学中的关键组件.
- 光子设备的小型化对于先进的光学系统至关重要.
- 化 (Si3N4) 为光子应用提供了出色的光学性能.
研究的目的:
- 在化 (Si3N4) 平台上设计一个超紧的极化束分离器 (PBS).
- 实现高性能指标,包括低插入损失和高灭绝率.
- 为了确保该设备具有高制造容忍度的可制造性.
主要方法:
- 利用了与非线性直接二进制搜索 (DBS) 算法的反向设计原理.
- 通过光学场分布分析模拟了设备性能.
- 关于蚀刻深度和直径变化的评估制造公差.
主要成果:
- 实现了2.4×4.8μm2.2的超紧的足迹.
- 在50 nm带宽 (1525-1575 nm) 上,已证明插入损失<0.89 dB (TE) 和<1.21 dB (TM).
- 获得的平均灭绝比为13.24 dB (TE) 和14.15 dB (TM).
- 展示了高的制造容忍度 (±50 nm蚀刻深度,±8 nm蚀刻直径).
结论:
- 设计的超紧的Si3N4 PBS满足了集成光子学的关键性能要求.
- 反向设计方法可以实现高效的,一阶段的光刻制造.
- 该设备对制造变化的强度使其适合实际实施.
相关概念视频
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A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
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01:19Mass Analyzers: Common Types
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01:12Double Resonance Techniques: Overview
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
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