Optical sensors are widely used for refractive index measurement in chemical, biomedical,
and food processing industries. Due to specific field distribution of the resonances, optical …

Optical biosensors are frontrunners for the rapid and real-time detection of analytes,
particularly for low concentrations. Among them, whispering gallery mode (WGM) resonators …

Whispering gallery mode (WGM) microtoroid resonators are one of the most sensitive
biochemical sensors in existence, capable of detecting single molecules. The main barrier …

Whispering gallery mode (WGM) resonators have attracted extensive attention and their
unique characteristics have led to some remarkable achievements. In particular, when …

Whispering-gallery-mode (WGM) microbubble resonators are ideal optical sensors due to
their high quality factor, small mode volume, high optical energy density, and …

Bound states in the continuum (BICs) have attracted considerable attentions for biological
and chemical sensing due to their infinite quality (Q)-factors in theory. Such high-Q devices …

In-fiber whispering gallery mode (WGM) microsphere resonators have received remarkable
attention due to the superiorities of compact structure, high stability and self-alignment. As …

With the advantages of high quality factor (Q) and small mode volume, whispering gallery
mode (WGM) microcavities obtain lower detection limits and have been increasingly applied …

The rapid advance of micro-/nanofabrication technologies opens up new opportunities for
miniaturized sensing devices based on novel three-dimensional (3D) architectures. Notably …

The microcavity is a promising sensor platform, but any perturbation will disturb its linewidth,
cause resonance shift or splitting. However, such sensing resolution is limited by the cavity's …