Method, apparatus, node device and network system for detecting optical signal-to-noise ratio
US9621263B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2014 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Sep 23, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/075
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a method and an apparatus for detecting an optical signal-to-noise ratio, a node device, and a network system. The method includes: receiving a detected optical signal carrying amplified spontaneous emission ASE noise; detecting a first alternating current component and a first direct current component of the detected optical signal; acquiring first modulation information of the detected optical signal; acquiring first correction information corresponding to the first modulation information according to the first modulation information; and determining an optical signal-to-noise ratio OSNR of the detected optical signal according to the first alternating current component, the first direct current component, and the first correction information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.