Multiplexer for providing non-equidistant intervals between pump wavelengths in broadband raman amplifiers

US6867906B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Christian Eder · Birkenfeld, DE
• Guido Gentner · Munich, DE
• Richard Neuhauser · Neufahrn, DE
• Ulrich Gaubatz · Munich, DE
• Peter Krummrich · Munich, DE

Key dates

• Filing date: Mar 12, 2002
• Grant date: Mar 15, 2005
• Expiry date: Mar 12, 2022

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S3/094096
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A method for producing non-equidistant pump waves for Raman amplification of a signal which is passed via an optical waveguide, as well as a pump wave producing apparatus for producing pump waves for Raman amplification of a signal which is passed via an optical waveguide, which apparatus has at least one pump source and is set up such that it can produce pump waves at a first, a second, a third and a fourth mutually equidistant pump wavelength, having a control device which is set up such that it causes, in each case, the production of a pump wave u, v, w at the first, second and fourth pump wavelengths, with the control device being set up such that no pump wave is produced at the third pump wavelength, so that a non-equidistant pump channel pattern is achieved overall.