System and method for generating multilevel coded optical signals
US8588621B2 · kind B2 · utility
12Cited by
4References
11Claims
0Family size
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Key dates
| Filing date | May 19, 2008 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Dec 19, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/541
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A simple and effective all-optical system, producing a multilevel coded optical signal based on the M-ASK technology and by the minimized equipment. The novel all-optical modulation technique for optical M-ASK generation is based on nonlinear interaction between optical signals, say between N 2-ASK modulated pump signals having extinction ratio ER1 and a single 2-ASK modulated optical probe signal having extinction ratio ER2. According to the invention, a 4-ASK optical signal can be obtained using just a single binary modulated pump optical signal and a single binary modulated probe optical signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.