Spectral equalizer for multiplexed channels
US6141130A · kind A · utility
14Cited by
3References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 14, 1998 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Jan 14, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/25073
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical element having a periodically varying spectral response is used to flatten the spectral amplitudes within each of a group of multiplexed channels having different predetermined central wavelengths with uneven spectral amplitudes peaked around the central wavelengths. Spectral equalization is achieved by having the amplitude valleys of the spectral response aligned individually with the different central wavelengths. The optical element comprises an optical cavity, which forms part of a low-finesse Fabry-Perot etalon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.