Patent · US Expired

Optical transmission system having cascaded raman

US6556341B2 · kind B2 · utility

7Cited by

4References

16Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Peter Krummrich · Munich, DE
Richard Neuhauser · Neufahrn, DE

Key dates

Filing date	Nov 21, 2001
Grant date	Apr 29, 2003
Priority date	—
Expiry date	Nov 21, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH01S3/0941
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical transmission system for wavelength-division multiplex signals, having cascaded Raman amplifiers, has a number of pump sources for each Raman amplifier, each having different pump wavelengths sets from one pump source to another pump source. This results in a flat gain spectrum for all the channels in a WDM transmission signal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.