Organic/inorganic composite superlattice type optical modulator
US6124964A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 1998 |
| Grant date | Sep 26, 2000 |
| Priority date | — |
| Expiry date | May 29, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/107
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
In an organic/inorganic composite superlattice type optical modulator capable of entering/projecting light, and capable of modulating an optical characteristic such as transmittance, reflectivity, and a refractive index of light in response to an externally controlled electric field, or light, the organic/inorganic composite superlattice type optical modulator includes at least one type of a compound semiconductor layer and at least one type of an organic compound layer; the compound semiconductor layer and the organic compound layer are alternately stacked in greater than one period; at least one of the compound semiconductor layer and the organic compound layer being crystalline; and also a thickness of each of the layers is made larger than a Bohr radius of the compound semiconductor and smaller than 10 times the Bohr radius. As a result, this novel optical modulator can provide a high nonlinear characteristic by a semiconductor modulator, and a high response characteristic by an organic modulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.