Active noise suppressor for multichannel optical systems
US5706383A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1996 |
| Grant date | Jan 6, 1998 |
| Priority date | — |
| Expiry date | Apr 30, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A vertical cavity signal suppressor array having a plurality of suppressor elements, each of which incorporate therein an active semiconductor region bounded by reflective elements and a source of current 20 connected thereto. When in operation within a multichannel optical system a preselected signal suppressing element the signal suppressor array is turned "on" in the selected channel of interest. This is accomplished by either injecting a small current through the reflective elements or by optical pumping, and the desired signal channel is transmitted with little or no loss. All the non-selected channels remain undriven or "off", that is, a state in which they are strongly absorptive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.