Optical switch system
US7672585B2 · kind B2 · utility
6Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2006 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Jul 4, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0049
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Each of a plurality of semiconductor optical amplifiers operates as an optical gate switch and selects an optical signal indicated by a gate control signal from an optical gate switch control unit. A plurality of photodetectors monitor the power of an optical signal input through a corresponding input port. A VOA control unit calculates an amount of attenuation corresponding to each input port based on the power of each optical signal. A variable optical attenuator attenuates the selected optical signal according to the calculated amount of attenuation in synchronization with the gate control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.