Patent · US Active

Optical wavelength division multiplex (WDM) transmission system

US8705952B2 · kind B2 · utility

2Cited by

0References

16Claims

0Family size

Assignee

ADVA AG Optical Networking · DE

Inventors

Klaus Grobe · Planegg, DE
Jörg-Peter Elbers · Fürstenfeldbruck, DE
Michael Eiselt · Tauberbischofsheim, DE
Markus Roppelt · Karlsruhe, DE

Key dates

Filing date	Dec 16, 2011
Grant date	Apr 22, 2014
Priority date	—
Expiry date	May 30, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH04J14/0201
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

The present invention embraces an optical wavelength division multiplex (WDM) transmission system, especially a WDM passive optical network, typically including a central node having a first and a second WDM port and a remote node having a first and a second WDM port and a plurality of channel ports, the central node first WDM port being connected to the remote node first WDM port via a bidirectional single-fiber optical working path and the central node second WDM port being connected to the remote node second WDM port via a single-fiber bidirectional optical protection path, and a group of basic optical node units (ONU's) each of which is connected to a respective remote node channel port via a bidirectional optical ONU path, each ONU including an optical receiver for receiving a downstream optical channel signal and an optical tunable transmitter for creating an upstream channel signal.

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