Semiconductor device for control of light
US5107307A · kind A · utility
7Cited by
4References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1991 |
| Grant date | Apr 21, 1992 |
| Priority date | — |
| Expiry date | Aug 7, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0156
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A semiconductor optical modulator is provided wherein very thin films of two kinds of semiconductors having different band gaps are laminated alternately to form a multi-quantum well (MQW) structure, also called a super-lattice structure, and current is injected into the MQW structure to change the corresponding optical absorption and refractive index characteristic thereof so that a sufficient on/off ratio can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.