Optical transmission system using four-wave mixing
US8233808B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Jun 11, 2009 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Oct 15, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0282
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical transmission system based on four-wave mixing and configured in a WDM-PON topology where a signal light between an optical line terminal and each of optical network units is multiplexed and demultiplexed at a WDM. The optical line terminal transmits downlink signal light having wavelengths λd1, . . . , λdN and pumping lights having wavelengths λp1, . . . , λpN which are different by a predetermined wavelength difference Δλ from the wavelengths of the downlink signal lights. Each of the optical network units demultiplexes the downlink signal lights to receive a portion of the downlink signal lights, generates an uplink signal light to be transmitted from each of the optical network unit to the optical line terminal by using a portion of the downlink signal lights and the four-wave mixing from the pumping lights, and outputs a modulated uplink signal light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.