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US 11,586,059 B2Granted
Silicon photonics modulator using TM mode and with a modified rib geometry
AssigneeCiena Corporation
InventorsAlexandre D. Simard, Yves Painchaud
Life of this patent
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Abstract
An optical modulator includes a rib; and a slab interconnected to both sides of the rib; wherein the rib is dimensioned relative to the slab to support guiding of a Transverse Magnetic (TM) mode with a main lobe that propagates orthogonal to the slab and with the main lobe substantially excluded from the slab. The rib guides wavelengths in an infrared range in the TM mode. A height of the rib, relative to the slab, is about half of a width of the rib, between the slab.
Claims20
An optical modulator comprising:
- a rib;
- and
- a slab interconnected to both sides of the rib;
- wherein the rib is dimensioned relative to the slab to support guiding of a Transverse Magnetic (TM) mode with a main lobe that propagates orthogonal to the slab and with the main lobe substantially excluded from the slab, wherein a height of the rib is about four times a height of the slab.
1 more element
An optical modulator comprising:
- a rib;
- and
- a slab interconnected to both sides of the rib;
- wherein the rib is dimensioned relative to the slab to support guiding of a Transverse Magnetic (TM) mode with a main lobe that propagates orthogonal to the slab and with the main lobe substantially excluded from the slab, wherein a height of the rib is about 400 nm, and a width of the rib is about 200 nm.
1 more element
An optical modulator comprising:
- a rib;
- and
- a slab interconnected to both sides of the rib;
- wherein the rib is dimensioned relative to the slab to support guiding of a Transverse Magnetic (TM) mode with a main lobe that propagates orthogonal to the slab and with the main lobe substantially excluded from the slab, wherein the rib includes two regions, Region I and Region II, with the TM mode confined in the Region I, wherein the Region II is smaller than the Region I reducing optical losses.
1 more element
Dependencies are inferred from the claim text.