Ontology highlight
ABSTRACT:
SUBMITTER: Kim Y
PROVIDER: S-EPMC3986731 | biostudies-literature | 2014 Apr
REPOSITORIES: biostudies-literature
Kim Younghyun Y Takenaka Mitsuru M Osada Takenori T Hata Masahiko M Takagi Shinichi S
Scientific reports 20140415
The plasma dispersion effect and free-carrier absorption are widely used to change refractive index and absorption coefficient in Si-based optical modulators. However, the weak free-carrier effects in Si cause low modulation efficiency, resulting in large device footprint and power consumption. Here, we theoretically and experimentally investigate the enhancement of the free-carrier effects by strain-induced mass modulation in silicon-germanium (SiGe). The application of compressive strain to Si ...[more]