在任意几何形状的拓腔中进行非相互激光
Babak Bahari1, Abdoulaye Ndao1, Felipe Vallini1
1Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA 92093, USA.
概括
我们开发了用于集成光子的新拓腔. 这些设备可以实现强大的单向光传输,克服先进光学电路的传统共振腔的局限性.
科学领域:
- 光子学
- 凝聚物质物理学
- 光学工程
背景情况:
- 在基于波的现象中,共振腔是基本的,但由于几何和互惠性,在光学设备集成中面临限制.
- 目前的光学设备设计受到传统共振腔的固有特性限制.
研究的目的:
- 为集成光子设计几何独立的,非互惠的拓腔.
- 从拓边缘状态到特定波导输出的受控合.
主要方法:
- 使用拓不变量来定义具有明显边界属性的光子结构.
- 在这些结构的接口设计了单向的光子边缘状态.
- 在电信波长上证明了这些拓腔的激光.
主要成果:
- 实现了几何独立的,集成的非互惠的拓腔.
- 从单向边缘状态对应到所选波导输出.
- 在非互换的光传输中显示了超过10分贝的隔离率.
结论:
- 从拓腔中激光的实验演示为复杂的拓电路开辟了道路.
- 在经典和量子模式下实现光子的集成和强大的生成和传输.
- 克服传统共振腔的基本局限性,
相关概念视频
Standing Waves in a Cavity
1.5K
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
1.5K
Bewley Lattice Diagram
1.5K
The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.
1.5K
Traveling Waves: Lossless Lines
491
The provided content explores the behavior of traveling waves on single-phase lossless transmission lines. It begins with a single-phase two-wire lossless transmission line of length Δx, characterized by a loop inductance LH/m and a line-to-line capacitance C F/m. These parameters result in a series inductance LΔx and a shunt capacitance CΔx.
491
LC Circuits
3.4K
An LC circuit consists of an inductor and a capacitor, either in series or parallel. Consider a charged capacitor connected with an inductor in series. Before the switch is closed, all the energy of the circuit is stored in the electric field of the capacitor. When the switch is closed, the capacitor begins to discharge, producing a current in the circuit. The current, in turn, creates a magnetic field in the inductor. Because of the induced emf in the inductor, the current cannot change...
3.4K


