All-optical silicon-photonic constellation conversion of amplitude-phase modulation formats
US9954620B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 1, 2015 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Oct 1, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/516
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for performing optical constellation conversion, according to which each received symbol from a constellation of input symbols is optically split into M components and each component is multiplied by a first predetermined different complex weighing factor, to achieve M firstly weighted components with different amplitudes. Then a nonlinear processor optically performs a nonlinear transform on each M firstly weighted components, so as to obtain M outputs which are linearly independent, Finally, a linear processor optically performs a linear transform to obtain a new converted constellation by optically multiplying, in the complex plane, each of the M outputs by a second predetermined different complex weighing factor, to achieve M secondly weighted components and then summing the M secondly weighted components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.