Method for operating an optical transmission system

US9231724B2 · kind B2 · utility

Assignee

• ADVA Optical Networking SE · DE

Inventors

• Stephan Pachnicke · Dortmund, DE
• Michael Eiselt · Tauberbischofsheim, DE
• Markus Roppelt · Karlsruhe, DE
• Mirko Lawin · Meiningen, DE
• Klaus Grobe · Planegg, DE
• Jörg-Peter Elbers · Fürstenfeldbruck, DE

Key dates

• Filing date: Mar 14, 2013
• Grant date: Jan 5, 2016
• Expiry date: Oct 3, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04J14/0276
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

An optical transmission system method including generating for a tunable laser a pilot tone having an adjustable pilot tone frequency identifying a wavelength division multiplexing channel used by the tunable laser; multiplying the pilot tone with pilot tone data to provide a pilot tone data signal; supplying the pilot tone data signal and a high frequency data signal to the tunable laser generating an optical laser signal output by the tunable laser responsive to the supplied signals; transporting the optical laser signal to a central wavelength to locker; converting the received optical laser signal to provide a pilot tone data signal for wavelength division multiplexing channels demodulated to detect the pilot tone and the pilot tone data for each individual wavelength division multiplexing channel; and identifying the wavelength division multiplexing channel on the basis of the pilot tone frequency of the detected pilot tone and evaluating the pilot tone data.