Optical amplifier arranged to offset Raman gain

US6088152A · kind A · utility

Assignee

• LUCENT TECHNOLOGIES INC. · US

Inventors

• Matthias Berger · Weimar, DE
• Dirk Bode · Tinton Falls, US
• Daniel Fishman · Lakewood, US
• Gabriela Livescu · Marlboro, US
• Christian Raabe · Jena, DE
• Fatimah Shehadeh · Waretown, US
• Jianhui Zhou · Beijing, CN
• Martin Zirngibl · Middletown, US

Key dates

• Filing date: Mar 8, 1999
• Grant date: Jul 11, 2000
• Expiry date: Mar 8, 2019

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B10/2912
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

An optical amplifier is adapted to cancel the Raman gain of an optical transmission path that degrades those optical signals occupying the low end of the bandwidth such that the power is transferred from the latter signals to the optical signals occupying the high end of the bandwidth. More specifically, the optical amplifier adjusts the gain that it applies to the optical signals so that it favors the signal components at the low end of the bandwidth.