概括
我们开发了一种新的光子装置,可以同时分离偏振光和分离功率. 这种超宽带设备对于高密度光子电路至关重要.
科学领域:
- 光子学是指光子学的使用方法.
- 集成光学 集成光学 集成光学
- 纳米光子学 纳米光子学
背景情况:
- 推进高密度光子电路需要多功能集成光子设备.
- 极化控制和功率分割是集成光学中的基本操作.
研究的目的:
- 提出并实验证明一种超宽带光子装置,能够同时进行极化分离和3dB的功率分割,用于TM模式.
- 为了利用亚波长网格 (SWG) 的异构特性,实现高效的双重功能.
主要方法:
- 设计利用了横向和纵向SWG在过渡和合区域的异构特性.
- TE极化光是以中心方向引导的;TM极化光是以侧方向分裂的.
- 在超宽带波长的设备特征.
主要成果:
- 作为TE输入 (1260-1675 nm) 的宽带偏振器,具有<1 dB的多余损失和<-20 dB的交叉声.
- 在TM输入 (1400-1660nm) 中实现3dB的分离,超额损失<0.5dB,交叉声在1550nm时<-22dB.
- 展示了紧的足迹 (21 × 6 μm2) 和CMOS兼容的制造.
结论:
- 拟议的设备有效地执行双重功能,分极分离和电力分割.
- 超宽带操作,低损耗和高灭绝率证实了设备的有效性.
- 紧的尺寸和CMOS兼容性增强了集成光子电路的实际相关性.
相关概念视频
01:08IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations
Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single stretching vibration...
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...
Spin decoupling is usually achieved by...