Multi-color tunable semiconductor device
US4492434A · kind A · utility
4Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 7, 1982 |
| Grant date | Jan 8, 1985 |
| Priority date | — |
| Expiry date | Jan 7, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F30/26
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A semiconductor multi-color filter spectrum analyzer is created by multiple pitaxial layers of varying composition. A DC sweep voltage is used to successively deplete the epitaxial layers. An AC voltage is used to modulate the absorption edge of the individual layers. A modification of this device concept is a variable bandwidth detector in which the spectral bandwidth is a function of the applied DC voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.