概括
我们开发了一种简单的碳化在绝缘体上的光子过器,使用无形. 这种芯片上的设备有效地拒绝不需要的光低于1.0微米,这对于非线性和量子光子学至关重要.
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
- 集成光学 集成光学 集成光学
背景情况:
- 碳化 (SiC) 光子学为非线性和量子应用提供了独特的优势.
- 高效的排斥过器对于隔离光子集成电路中所需的信号至关重要.
- 现有的过器技术可能在集成或性能方面面临限制.
研究的目的:
- 在绝缘体上的碳化平台上设计和演示芯片上的被动排放过器.
- 利用无形 (α-Si) 进行高效的光学吸收和光反射.
- 为了实现与基于SiC的非线性和量子光子设备的无集成.
主要方法:
- 用沉积无形薄膜层制造SiC在绝缘体上的波导.
- 用光学吸收来实现波长选择性的被动波器的设计.
- 在不同波长频段的排斥效率和插入损失的实验性表征.
主要成果:
- 在780nm波长下,排斥效率超过230dB/mm.
- 在O,C和L频段实现了约1dB的低插入损失.
- 过器的设计与标准的半导体晶圆制造工艺兼容.
结论:
- 开发的芯片上的被动排斥过器是SiC光子集成电路的重大进步.
- 过器的高排斥效率和低插入损失使其适合要求高的光子应用.
- 这项技术有助于开发更复杂,更高效的基于SiC的非线性和量子光子系统.
相关概念视频
01:27Passive Filters
541
Passive filters are utilized to shape the frequency spectrum of signals across a diverse array of applications. These filters, using only passive elements like resistors (R), inductors (L), and capacitors (C), are capable of selectively allowing or blocking certain frequency ranges without the need for external power sources.
Low-Pass Filters
Low-pass filters are designed to transmit signals with frequencies lower than the cutoff frequency, ωc, and attenuate those above it. The cutoff...
Low-Pass Filters
Low-pass filters are designed to transmit signals with frequencies lower than the cutoff frequency, ωc, and attenuate those above it. The cutoff...
541
01:25Active Filters
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Active filters are electronic circuits that use operational amplifiers (op-amps), resistors, and capacitors to filter out unwanted frequency components from a signal. A first-order low-pass active filter is designed to pass signals with a frequency lower than a certain cutoff frequency and attenuate frequencies higher than that cutoff frequency. The transfer function for a first-order low-pass active filter is:
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