Patent ID: 9625746
Date: 2017-04-18
CPC Classifications: G02F

Claim:
1. A silicon carrier-depletion modulator, comprising: a waveguide comprising a slab and a core, the core having a first height and including a first core region doped a first conductivity type and a second core region doped a second conductivity type, the first conductivity type being opposite the second conductivity type, wherein the slab has a second height, different from the first height, and comprises a first slab region doped the first conductivity type, a second slab region doped the first conductivity type, and a third slab region, and wherein the second and third slab regions are between the first slab region and the first core region, the third slab region is between the second slab region and the first core region, and wherein a first doping level of the first slab region is greater than a second doping level of the second slab region, and the second doping level of the second slab region is greater than a third doping level of the third slab region and a core doping level of the first core region.