Optical communication system
US9036995B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2010 |
| Grant date | May 19, 2015 |
| Priority date | — |
| Expiry date | Jan 22, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/074
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical communication system includes an optical-signal transmission unit transmitting an existing optical signal and a low-rate-signal superimposition unit superimposing a low-rate signal on the existing optical signal by intensity modulation. It further includes: a low-rate-signal extraction unit that extracts the low-rate signal from the existing optical signal on which the low-rate signal is superimposed and converts the extracted low-rate signal into a low-rate electric signal; an add-on optical-signal transmission unit that transmits an add-on optical signal; a low-rate-signal superimposition unit that superimposes a low-rate signal on the add-on optical signal by the intensity modulation based on the low-rate electric signal; and a repeater that repeats the add-on optical signal on which the low-rate signal is superimposed, to a transmission destination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.