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AssigneeMassachusetts Institute of Technology
InventorsJohn D. Joannopoulos, Pierre R. Villeneuve, Shanhui Fan, Daniel S. Abrams
Estimating the term…
A nonlinear dielectric material is incorporated within a photonic crystal as a means of changing the refractive index of a defect. In this way, the resonant frequency can be easily adjusted, after fabrication, by external mechanisms (either optical or electronic). The ability to tune the frequency of a resonant mode is useful for constructing photonic integrated devices, thus the invention enables the use of a photonic-crystal microcavity for such purposes. In one embodiment there is provided a photonic crystal having a periodic dielectric structure, and a defect positioned within the structure to define a microcavity. The defect includes a nonlinear material and being adapted to have an induced variation in index of refraction so as to tune the resonant mode of the microcavity.
A periodic structure comprising a defect positioned within said structure to define a microcavity, said structure comprising a nonlinear material and being adapted to have an induced variation in index of refraction so as to tune the resonant mode of said microcavity, wherein the frequency of said resonant mode is in the microwave regime.
A periodic structure comprising a defect positioned within said structure to define a microcavity, said structure comprising a nonlinear material and being adapted to have an induced variation in index of refraction so as to tune the resonant mode of said microcavity, wherein said structure comprises metallic and dielectric materials.
A periodic structure comprising a defect positioned within said structure to define a microcavity, said structure comprising a nonlinear material and being adapted to have an induced variation in index of refraction in response to either an applied current or applied electromagnetic waves, or to third or higher order effects, so as to tune the resonant mode of said microcavity.
A periodic structure comprising a defect positioned within said structure to define a microcavity, said structure comprising a nonlinear material and being adapted to tune the resonant mode of said microcavity in response to either an applied current or applied electromagnetic waves, or to third or higher order effects.
A structure comprising:
A method of tuning a photonic crystal comprising:
A method of tuning a photonic crystal comprising:
Dependencies are inferred from the claim text.