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Detecting light in whispering-gallery-mode resonators

  • US 8,124,927 B2
  • Filed: 05/29/2007
  • Issued: 02/28/2012
  • Est. Priority Date: 05/29/2007
  • Status: Active Grant
First Claim
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1. An optical device, comprising:

  • a whispering gallery mode (WGM) optical resonator configured to support one or more whispering gallery modes;

    a photodetector optically coupled to an exterior surface of the optical resonator to receive evanescent light from the optical resonator to detect light inside the optical resonator; and

    a spacer comprising a transparent material positioned between the photodetector and the exterior surface of the optical resonator, wherein the spacer is in direct physical contact with the exterior surface of the optical resonator and the photodetector.

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