Whispering-gallery mode (WGM) cavities formed by dielectric structures have attracted
intensive interest in various fields. The high-quality factor and smaller mode volume …

We review the works performed on whispering gallery mode (WGM) micro-optical resonators
made in rare-earth (RE) doped glasses for implementing low threshold and narrow line …

Optical microcavities with ultralong photon storage times are of central importance for
integrated nanophotonics. To date, record quality (Q) factors up to 10 11 have been …

A carbon dioxide (CO_2) gas sensor based on a polyhexamethylene biguanide (PHMB)-
coated whispering gallery mode (WGM) microbubble resonator is proposed and verified …

A silica gel coated microsphere resonator is proposed and experimentally demonstrated for
measurements of ammonia (NH3) concentration in air with ultra-high sensitivity. The optical …

Optical frequency comb (OFC) based on the whispering-gallery-mode microresonator has
various potential applications in fundamental and applied areas. Once the solid …

Technological innovation with millimeter waves (mm waves), signals having carrier
frequencies between 30 and 300 GHz, has become an increasingly important research field …

Whispering gallery mode (WGM) cavities provide resonance configurations for light
propagation through internal reflection, achieving high Q factors, low thresholds, and small …

Highly sensitive sensing is one of the most important applications of whispering-gallery-
mode (WGM) microresonators, which is usually accomplished through a tunable continuous …

We theoretically study electro-optic light modulation based on a quantum model where the
linear electro-optic effect and the externally applied microwave field result in the interaction …