Method and apparatus for adjusting tilting and level of optical signals
US7024117B1 · kind B1 · utility
7Cited by
7References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 6, 1998 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | Nov 6, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2916
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Pump energy with a wavelength which is below the wavelength of an optical signal is fed into a transmission section from a pump laser via a coupler. The received optical signal is attenuated with increasing pump power with signals having higher frequencies being more strongly damped.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.