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US 2013/0294722 A1Published application
Practical multiply resonant photonic crystal nanocavity
OwnerJelena Vuckovic, Kelley Rivoire +2inventors
InventorsJelena Vuckovic, Kelley Rivoire, Sonia M. Buckley, Jesse Lu
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Abstract
Intersecting photonic crystal structures provide overlapping cavity modes that can have widely separated resonant frequencies. These photonic crystal structures can be either 1-D photonic crystal structures or 2-D photonic crystal structures. If a material having the zincblende crystal structure is employed (e.g., GaAs), it is preferred for the crystal orientation to be (110) or (111), because these orientations can provide three wave mixing for three TE-like modes.
Claims16
A nonlinear optical device comprising:
- a crystalline substrate having (110) or (111) crystal orientation for its top surface;
- two or more crystalline waveguides disposed on or above the substrate in the same plane, each of the waveguides having a crystal orientation that is the same as the substrate crystal orientation;
- wherein the two or more waveguides intersect at an intersection region;
- wherein each of the two or more waveguides includes resonance features such that a resonant mode is formed in the waveguide and localized to the intersection region.
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A photonic crystal structure comprising:
- a cavity region;
- a first 2-D photonic crystal structure having a first periodicity and supporting a first cavity mode in the cavity region;
- a second 2-D photonic crystal structure having a second periodicity distinct from the first periodicity and supporting a second cavity mode in the cavity region;
- wherein the cavity region and the first and second 2-D photonic crystal structures are formed by patterning a single slab of material;
- and
- wherein the first and second 2-D photonic crystal structures are each configured as two ends sandwiching the cavity region.
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Dependencies are inferred from the claim text.