Yongxing Wang, Ping Xu
Opt Express. 2020 Aug 17;28(17):24761-24771. doi: 10.1364/OE.398304.
An interesting phenomenon of "short circuit" of the power flux of light arising from the electromagnetic decoupling has been discovered in a composite structure composed of epsilon-mu-near-zero medium (EMNZ) and epsilon-near-zero (ENZ). In the composite structure, the power flux of light goes around the ENZ components with any shapes and sizes and perfectly passes through the composite structure via the EMNZ until the connection of the EMNZ is broken. The ENZ components can freely manipulate the power flux of light flowing along arbitrary paths inside the EMNZ without reflection. In addition, we discover that the embedded ENZ components enhance the stability of transmission property of impure EMNZ effectively. The arbitrarily-shaped non-ENZ dopants of EMNZ are able to be well hidden by coating an ENZ cladding with moderate thickness, which is demonstrated through an actual structure composed of photonic crystals. In the area of transmission and processing of optical signal in two-dimensional integrated optical systems, the EMNZ-ENZ composite structure we construct employs potential application prospects.
在由介电常数-磁导率近零介质（EMNZ）和介电常数近零（ENZ）组成的复合结构中，发现了一种由电磁解耦引起的光功率通量“短路”的有趣现象。在该复合结构中，光的功率通量绕过任何形状和尺寸的ENZ组件，并通过EMNZ完美地穿过复合结构，直到EMNZ的连接断开。ENZ组件可以自由操纵在EMNZ内部沿任意路径流动的光的功率通量，而不会产生反射。此外，我们发现嵌入的ENZ组件有效地增强了不纯EMNZ传输特性的稳定性。通过用适度厚度的ENZ包层进行包覆，EMNZ的任意形状的非ENZ掺杂剂能够被很好地隐藏，这通过由光子晶体组成的实际结构得到了证明。在二维集成光学系统中的光信号传输和处理领域，我们构建的EMNZ-ENZ复合结构具有潜在的应用前景。
