论文标题
在耦合模式设备中可重新配置的多端子开关
Reconfigurable multiport switch in coupled mode devices
论文作者
论文摘要
我们考虑了一个耦合模式系统，其中局部模式的有效传播常数适合调制。从极度抑制功率传输的未调制系统开始，我们证明了传播常数的小，周期性调制，可以使用缓慢变化的封底近似来增强电源传递，以示例振幅。我们计算一个近似调制频率，可在原本可以忽略的耦合元素之间进行完全传递。通过电或热效应控制这些调制的能力，可以使可重新配置的多层切换。我们使用一系列耦合的二氧化硅波导和热光效应来测试我们在电信C波段中的预测。但是，这需要折射索引调制，并使用$ 〜10^{ - 3}〜\ mathrm {m {m} $的订单，并产生总功率传输，并以$ 10^{ - 1}〜\ mathrm {m Mathrm {m} $的传播距离的传播距离，这可能会使集成的光电量应用程序不合同。然而，我们的结果对于通过等效耦合模式矩阵所描述的设备有效，用于空间或时间传播。例如，微林或Terahertz谐振器，微波炉，射频天线或RLC电路的阵列。
We consider a coupled mode system where the effective propagation constants of localized modes are amenable to modulation. Starting from an unmodulated system where power transfer is heavily suppressed, we demonstrate that small, periodic modulation of the propagation constants enhance power transfer using a slowly varying envelope approximation for the field mode amplitudes. We calculate an approximate modulation frequency enabling complete transfer between otherwise negligibly coupled elements. The ability to control these modulations by electrical or thermal effects allows for reconfigurable multiport switching. We use an array of coupled silica waveguides and the thermo-optic effect to test our predictions in the telecom C-band. However, this requires a refractive index modulation with period of the order $~10^{-3}~\mathrm{m}$ and yields total power transfer with a propagation distance of the order of $10^{-1}~\mathrm{m}$, which might make it unattractive for integrated photonic applications. Nevertheless, our results are valid for devices described by an equivalent coupled mode matrix for space or time propagation; for example, arrays of microring or terahertz resonators, microwave cavities, radio frequency antennas, or RLC circuits.
