Optical wavelength division multiplexed signal amplifying repeater and optical communication transmission line with very large capacity
US6377375B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1999 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Jan 14, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/258
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical wavelength division multiplexed signal amplifying repeater capable of doubling the number of wavelength division multiplexed signals that can be transmitted is disclosed. Optical signals of both 1.3 &mgr;m band and 1.55 &mgr;m band in the entered optical wavelength division multiplexed signals are amplified, while pumping lights capable of causing Raman amplification in the 1.3 &mgr;m band are coupled with the optical wavelength division multiplexed signals so as to cause the Raman amplification for the optical signals of the 1.3 &mgr;m band, such that a difference between the loss in the 1.3 &mgr;m band and the loss in the 1.55 &mgr;m band due to the optical fibers are compensated. An optical communication transmission line using such repeaters is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.