Optical devices based on connected and optically coupled optical whispering-gallery-mode resonators formed on a rod
First Claim
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1. An optical device, comprising:
- a cylindrical rod of an optical material structured to comprise a plurality of optical waveguide loops, which are formed on or near an exterior surface of the cylindrical rod and each surround a longitudinal axis of the cylindrical rod, to form a plurality of optical whispering gallery mode ring resonators in each of which a whispering gallery mode circulates around a respective optical waveguide loop, two adjacent optical waveguide loops of the plurality of optical waveguide loops being separated from each other with a spacing to allow optical coupling between the two adjacent optical waveguide loops.
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Abstract
Devices having whispering-gallery-mode (WGM) resonators configured to meet requirements of various applications and facilitate fabrication of such devices.
103 Citations
23 Claims
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1. An optical device, comprising:
a cylindrical rod of an optical material structured to comprise a plurality of optical waveguide loops, which are formed on or near an exterior surface of the cylindrical rod and each surround a longitudinal axis of the cylindrical rod, to form a plurality of optical whispering gallery mode ring resonators in each of which a whispering gallery mode circulates around a respective optical waveguide loop, two adjacent optical waveguide loops of the plurality of optical waveguide loops being separated from each other with a spacing to allow optical coupling between the two adjacent optical waveguide loops. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An optical device, comprising:
a cylindrical rod of an optical material structured to comprise a helix of an optical waveguide winding around the cylindrical rod regions in form of a plurality of connected optical waveguide loops forming the helix, each optical waveguide loop supporting at least one optical whispering gallery mode and being close to an adjacent optical waveguide loop located at a different position along the cylindrical rod to be optically coupled with the adjacent optical waveguide loop via spatial overlapping of optical fields extended outside the optical waveguide loop and the adjacent optical waveguide loop. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A method for processing light via optically coupled resonators, comprising:
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providing a cylindrical rod of an optical material structured to comprise a plurality of optical waveguide loops, which are formed on or near an exterior surface of the cylindrical rod and each surround a longitudinal axis of the cylindrical rod, to form a plurality of optical whispering gallery mode ring resonators in each of which a whispering gallery mode circulates around a respective optical waveguide loop; structuring the optical waveguide loops to separate two adjacent optical waveguide loops of the plurality of optical waveguide loops from each other with a spacing to allow optical coupling between the two adjacent optical waveguide loops; and coupling light into the optical waveguide loops to process the light through the optically coupled optical waveguide loops.
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23. A method for processing light, comprising:
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providing a cylindrical rod of an optical material structured to comprise a helix of an optical waveguide winding around the cylindrical rod regions in form of a plurality of connected optical waveguide loops forming the helix, each optical waveguide loop supporting at least one optical whispering gallery mode; structuring the helix and the connected optical waveguide loops so that one connected optical waveguide loop is close to an adjacent connected optical waveguide loop located at a different position along the cylindrical rod to be optically coupled with each other via spatial overlapping of optical fields extended outside the optical waveguide loop and the adjacent optical waveguide loop; and coupling light into the helix to process the light through the connected and optically coupled optical waveguide loops.
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Specification