Patent · US Active

Resonator with reduced losses

US9335479B2 · kind B2 · utility

0Cited by
3References
13Claims
0Family size

Assignee

Inventors

Key dates

Filing dateOct 9, 2012
Grant dateMay 10, 2016
Priority date—
Expiry dateOct 9, 2032

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B6/29341
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A device for detecting electromagnetic radiation comprises a waveguide and at least one resonator on a substrate, and a low-refractive index region between each resonator and the substrate. The low-refractive index region has a lower refractive index than a material of the resonator. The low-refractive index region may be annular, and may have a width corresponding to a width of a region in which electromagnetic radiation is concentrated in a whispering-gallery resonant mode. The low-refractive index region may be an air gap between the substrate and the resonator. The device may be a spectrometer for detecting a plurality of predetermined wavelengths of electromagnetic radiation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.