Optical equalization of multi-level symbol constellations
US7733562B2 · kind B2 · utility
1Cited by
3References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 29, 2007 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Dec 10, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/548
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method of optically equalizing a multi-level (amplitude or phase) optical signal through the effect of an optical equalizer wherein the optical equalizer (OEQ) is placed at either a transmission end or a receiver end of the optical communications link and a tap delay characteristic of the OEQ need not be determined by symbol spacing, rather it may advantageously be adjusted to desirably compensate non-linear mapping performed in the modulation process or simultaneous operation on a plurality of wavelength division multiplexed (WDM) channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.