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
A silicon photonics modulator includes a rib that is a PN junction; a slab including a P doped region adjacent to the waveguide core on a first side and an N doped region adjacent to the waveguide core on a second side, opposite the first side; and a first electrode connected to the P-doped region and a second electrode connected to the N-doped region, wherein the rib is dimensioned to support guiding of a Transverse Magnetic (TM) mode with a main lobe that propagates orthogonal to the slab. The rib guides wavelengths in an infrared range in the TM mode.
Claims20
A silicon photonics modulator comprising:
- a rib that is a PN junction;
- a slab including a P doped region adjacent to the waveguide core on a first side and an N doped region adjacent to the waveguide core on a second side, opposite the first side;
- and
- a first electrode connected to the P-doped region and a second electrode connected to the N-doped region,
- wherein the rib is dimensioned to support guiding of a Transverse Magnetic (TM) mode with a main lobe that propagates orthogonal to the slab, and
- wherein the P-dopant level and the N-dopant level are each varied in the slab between the rib and the corresponding electrodes.
A silicon photonics modulator comprising:
- a rib that is a PN junction;
- a slab including a P doped region adjacent to the waveguide core on a first side and an N doped region adjacent to the waveguide core on a second side, opposite the first side;
- and
- a first electrode connected to the P-doped region and a second electrode connected to the N-doped region,
- wherein the rib is dimensioned to support guiding of a Transverse Magnetic (TM) mode with a main lobe that propagates orthogonal to the slab, and
- wherein a gap is included in a middle of the slab where the rib is located, to shift an optical mode away from the slab.
A silicon photonics modulator comprising:
- a rib that is a PN junction;
- a slab including a P doped region adjacent to the waveguide core on a first side and an N doped region adjacent to the waveguide core on a second side, opposite the first side;
- and
- a first electrode connected to the P-doped region and a second electrode connected to the N-doped region,
- wherein the rib is dimensioned to support guiding of a Transverse Magnetic (TM) mode with a main lobe that propagates orthogonal to the slab, and
- wherein another slab is included on top of the waveguide to provide a tilted-H waveguide.
Dependencies are inferred from the claim text.