Signal processing device and signal processing method
US9686020B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2015 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | Aug 4, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/6165
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A signal processing device that processes a digital signal formed by sampling an electric signal using a clock signal, the electric signal being obtained by converting an optical signal inputted from a transmission line, the signal processing device includes: a first chromatic dispersion compensator that compensates a waveform distortion caused by a chromatic dispersion with respect to the digital signal; a first nonlinear optical effect compensator that compensates a waveform distortion caused by a nonlinear optical effect with respect to one signal outputted from the first chromatic dispersion compensator; and a controller that detects a phase fluctuation of other signal outputted from the first chromatic dispersion compensator, and controls the clock signal based on the detected phase fluctuation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.