High performance optical modulator
OwnerMian Zhang, Christian Reimer +1inventors
InventorsMian Zhang, Christian Reimer, Prashanta Kharel
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Abstract
An optical device including a waveguide, electrodes, and a connecting dielectric is described. The waveguide includes an electro-optic material having a waveguide optical refractive index and a waveguide microwave dielectric constant. The electrodes include a first electrode and a second electrode. The waveguide is between the first electrode and the second electrode. At least a portion of the connecting dielectric is between the waveguide and electrodes. The connecting dielectric has a microwave dielectric constant greater than the waveguide microwave dielectric constant.
Claims20
An optical device, comprising:
- a waveguide including an electro-optic material having a waveguide optical refractive index and a waveguide microwave dielectric constant, the electro-optic material including lithium;
- an electrode;
- a cladding having a cladding optical dielectric constant and a cladding microwave dielectric constant, at least a portion of the cladding being on the waveguide;
- and
- a connecting dielectric, at least a portion of the connecting dielectric having a microwave dielectric constant greater than the cladding microwave dielectric constant and being between at least a portion of the waveguide and the electrode.
An optical device, comprising:
- a waveguide including an electro-optic material having a waveguide optical refractive index and a waveguide microwave dielectric constant, the electro-optic material including lithium;
- a plurality of electrodes;
- cladding on at least a portion of the waveguide, the cladding having a cladding microwave dielectric constant of at least 3.8;
- and
- a connecting dielectric, at least a portion of the connecting dielectric having a microwave dielectric constant greater than the cladding microwave dielectric constant and being between at least a portion of the waveguide and the plurality of electrodes, the connecting dielectric being configured to direct an electric field generated by a signal in at least one of the plurality of electrodes toward the waveguide.
A method, comprising:
- providing a waveguide including an electro-optic material having a waveguide optical refractive index and a waveguide microwave dielectric constant, the electro-optic material including lithium;
- providing an electrode;
- providing a connecting dielectric;
- and
- providing a cladding having a cladding optical dielectric constant and a cladding microwave dielectric constant, at least a portion of the cladding being on the waveguide;
- wherein at least a portion of the connecting dielectric has a microwave dielectric constant greater than the cladding microwave dielectric constant and is between at least a portion of the waveguide and the electrode.
Dependencies are inferred from the claim text.