Multiple level modulation in a wavelength-division multiplexing (WDM) systems
US6341023B1 · kind B1 · utility
67Cited by
8References
29Claims
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Key dates
| Filing date | Jul 23, 1999 |
| Grant date | Jan 22, 2002 |
| Priority date | — |
| Expiry date | Jul 23, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0057
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Optical signals modulated with data are transmitted into a fiber link having a property of including nonlinear distortion of the optical signals as a function of signal power of the optical signals and distance traversed in the fiber link. The data is formatted with multiple-level signaling having a preselected M value to produce formatted data signals. The formatted data signals are multiplexed to produce wavelength-division multiplex (WDM) channels each carrying optical signals based on the formatted data signals. The preselected M value is based on signal jitter and maximum signal power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.