Electro-optical modulation and other optical applications using poled optical whispering gallery mode resonators
First Claim
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1. A device, comprising:
- an optical resonator configured to support whispering gallery modes and comprising a plurality of sectors that are optically nonlinear and each exhibit an electro-optical effect, wherein nonlinear coefficients of two adjacent sectors are oppositely poled; and
an electrical waveguide located relative to the optical resonator to guide an electrical oscillation signal into the optical resonator to spatially overlap with the whispering gallery modes and to modulate an index of the optical resonator via the electro-optical effect.
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Abstract
This application describes examples and implementations of optical devices and techniques based on use of whispering gallery mode (WGM) optical resonators that have nonlinear optical materials in multiple sectors where nonlinear coefficients of two adjacent sectors are oppositely poled.
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Citations
31 Claims
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1. A device, comprising:
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an optical resonator configured to support whispering gallery modes and comprising a plurality of sectors that are optically nonlinear and each exhibit an electro-optical effect, wherein nonlinear coefficients of two adjacent sectors are oppositely poled; and
an electrical waveguide located relative to the optical resonator to guide an electrical oscillation signal into the optical resonator to spatially overlap with the whispering gallery modes and to modulate an index of the optical resonator via the electro-optical effect. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 24)
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18. A method, comprising:
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using an optical resonator to receive an input optical signal, wherein the optical resonator has a geometry to support whispering gallery modes and comprises a plurality of sectors whose nonlinear coefficients are oppositely poled between two adjacent sectors, wherein the sectors each exhibit an electro-optical effect; and
coupling an electrical oscillation signal into the optical resonator to spatially overlap with the whispering gallery modes and to produce an output optical signal having a modulation at a frequency of the electrical oscillation signal. - View Dependent Claims (19, 20, 21, 22, 23)
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25. A device, comprising:
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an optical resonator configured to support whispering gallery modes and comprising a nonlinear optical material exhibiting a second-order nonlinear effect and an electro-optical effect, wherein the nonlinear optical material comprises a plurality of sectors arranged in a quasi phase matching configuration for nonlinear wave mixing of an input optical signal in a first whispering gallery mode, an output optical signal in a second whispering gallery mode, and an electrical oscillation signal spatially overlapping with the whispering gallery modes;
an electrical waveguide located relative to the optical resonator to guide the electrical oscillation signal into the optical resonator to spatially overlap with the whispering gallery modes and to modulate an index of the optical resonator; and
means for coupling the input optical signal into the optical resonator and the output optical signal out of the resonator. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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Specification