Electro-optic whispering-gallery-mode resonator devices
First Claim
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1. A whispering gallery mode resonator based device, comprising:
- an optical resonator made of a material exhibiting an electro-optic effect and shaped to support one or more optical whispering gallery modes circulating along a circular optical loop near a rim of the optical resonator; and
electrodes formed on the optical resonator to apply an RF or microwave signal to the optical resonator to effectuate the electro-optic effect and comprising a plurality of electrode segments located on one surface of the optical resonator connected in series along part of the circular optical loop and, wherein two adjacent electrode segments are at different radial distances from a center of the circular optical loop to cause a spatial modulation in the applied RF or microwave signal in the optical resonator.
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Abstract
Devices and techniques for forming devices based on electro-optic whispering gallery mode (WGM) resonators by using spatially modulated electrodes and electro-optic whispering gallery mode (WGM) resonators that effectuate coupling between light in an optical whispering gallery mode in the TE mode and light in another optical whispering gallery mode in the TM mode.
115 Citations
16 Claims
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1. A whispering gallery mode resonator based device, comprising:
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an optical resonator made of a material exhibiting an electro-optic effect and shaped to support one or more optical whispering gallery modes circulating along a circular optical loop near a rim of the optical resonator; and electrodes formed on the optical resonator to apply an RF or microwave signal to the optical resonator to effectuate the electro-optic effect and comprising a plurality of electrode segments located on one surface of the optical resonator connected in series along part of the circular optical loop and, wherein two adjacent electrode segments are at different radial distances from a center of the circular optical loop to cause a spatial modulation in the applied RF or microwave signal in the optical resonator. - View Dependent Claims (2, 3, 4, 5)
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6. A whispering gallery mode resonator based device, comprising:
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an optical resonator made of a ferroelectric crystal and structured to support optical whispering gallery modes in two orthogonally polarized TE and TM modes circulating along a circular optical loop near a rim of the optical resonator; and electrodes formed on the optical resonator to apply an RF or microwave signal to the optical resonator in an electric field polarization oriented relative to a crystal axis of the ferroelectric crystal to effectuate coupling between an optical whispering gallery mode in the TE mode and another optical whispering gallery mode in the TM mode to produce an optical single sideband modulation on light in the optical resonator. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A method for operating a whispering gallery mode resonator device, comprising:
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coupling light into an optical resonator made of a ferroelectric crystal and structured to support optical whispering gallery modes in two orthogonally polarized TE and TM modes circulating along a circular optical loop near a rim of the optical resonator; and applying an RF or microwave signal to the optical resonator in an electric field polarization oriented relative to a crystal axis of the ferroelectric crystal to effectuate coupling between light in an optical whispering gallery mode in the TE mode and light in another optical whispering gallery mode in the TM mode to produce a tunable optical single sideband modulation at a modulation frequency equal to a difference in optical frequencies of the optical whispering gallery modes in the TE and TM modes. - View Dependent Claims (14, 15, 16)
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Specification