Advanced optical materials are crucial in the development of many everyday appliances that enhance our lives. These materials have the unique ability to manipulate light in various ways, allowing us ...

With the increasing threat of sophisticated counterfeits, what is a security device that can combat against them? It has been known that a technology that has never existed before can be used in ...

Figure 1: On-chip WGM silica microtoroid resonators with gain and loss for PT symmetry and optical isolation. Figure 4: Optical isolation performance of the device versus separation distance between ...