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US 2021/0271120 A1Published application
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.
1 more element
An optical modulator comprising:
- a first region of a waveguide defined by a depletion width of a PN junction;
- a second region of the waveguide defined by a remaining portion of the waveguide from the first region;
- a third region that is a slab area surrounding the waveguide and that includes a P-dopant on a first side adjacent the waveguide and an N-dopant on a second side adjacent the waveguide opposite the first side;
- and
- a fourth region surrounding the waveguide,
- wherein the first region has a width similar to a width of the waveguide, supporting a Transverse Magnetic (TM) mode with a main lobe that propagates orthogonal to the slab.
3 more elements
Dependencies are inferred from the claim text.