Method and arrangement for switching a Raman pump laser on and/or off

US8301031B2 · kind B2 · utility

Assignee

• Nokia Siemens Networks GmbH & Co. KG · DE

Inventors

• Guido Gentner · Munich, DE
• Gerhard Thanhäuser · Mering, DE

Key dates

• Filing date: Jun 12, 2007
• Grant date: Oct 30, 2012
• Expiry date: Feb 5, 2030

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B10/2916
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

Optoelectrical conversion of the received optical service signal (OSS), bandpass filtering and subsequent squaring produce a spectral line at the clock frequency (fT). This clock line (TL) is selected by means of narrowband filtering and rectified. The service signal voltage (VTLM) obtained in this manner is used to switch on a Raman pump laser (11).