Low loss high efficiency photonic phase shifter
AssigneePsiquantum, Corp.
InventorNikhil Kumar
Life of this patent
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Abstract
Photonic devices are disclosed including a first cladding layer, a first electrical contact comprising a first lead coupled to a first dielectric portion, a second electrical contact comprising a second lead coupled to a second dielectric portion, a waveguide structure comprising a slab layer comprising a first material, and a second cladding layer. The slab layer may be coupled to the first dielectric portion of the first electrical contact and the second dielectric portion of the second electrical contact. The first dielectric portion and the second dielectric portion may have a dielectric constant greater than a dielectric constant of the first material.
Claims20
A device, comprising:
- a first cladding layer;
- a first electrical contact comprising a first lead and a first dielectric portion, wherein the first lead is coupled to the first dielectric portion;
- a second electrical contact comprising a second lead and a second dielectric portion, wherein the second lead is coupled to the second dielectric portion, and wherein the first dielectric portion and the second dielectric portion are separated by a gap region;
- a waveguide structure comprising a slab layer composed of barium titanate, wherein the slab layer is coupled to the first dielectric portion of the first electrical contact and the second dielectric portion of the second electrical contact;
- a ridge portion coupled to the slab layer, wherein the ridge portion is disposed between the first electrical contact and the second electrical contact;
- and
- a second cladding layer,
- wherein the first dielectric portion and the second dielectric portion have a dielectric constant in a first direction greater than a dielectric constant in the first direction of barium titanate, wherein the first direction comprises a direction separating the first dielectric portion from the second dielectric portion, and wherein the first direction is parallel to the slab layer.
A device, comprising:
- a first cladding layer;
- a first electrical contact comprising a first lead and a first dielectric portion, wherein the first lead is coupled to the first dielectric portion;
- a second electrical contact comprising a second lead and a second dielectric portion, wherein the second lead is coupled to the second dielectric portion;
- a waveguide structure comprising a slab layer composed of a first material, wherein the slab layer is coupled to the first dielectric portion of the first electrical contact and the second dielectric portion of the second electrical contact;
- and
- a second cladding layer,
- wherein the first dielectric portion and the second dielectric portion have a dielectric constant in a first direction that is greater than a dielectric constant in the first direction of the first material.
An optical switch, comprising:
- at least one input port;
- at least one output port;
- a Mach-Zehnder interferometer coupled to a beam splitter, wherein the Mach-Zehnder interferometer comprises a first arm and a second arm;
- a photonic phase shifter comprised within the first arm of the Mach-Zehnder interferometer, the photonic phase shifter comprising:
- a first cladding layer;
- a first electrical contact comprising a first lead coupled to a first dielectric portion;
- a second electrical contact comprising a second lead coupled to a second dielectric portion;
- a waveguide structure comprising a slab layer composed of a first material, wherein the slab layer is coupled to the first dielectric portion of the first electrical contact and the second dielectric portion of the second electrical contact;
- and
- a second cladding layer,
- wherein the first dielectric portion and the second dielectric portion have a dielectric constant in a first direction that is greater than a dielectric constant in the first direction of the first material.
Dependencies are inferred from the claim text.