Patent ID: 8406630
Filing Date: 2013-03-26
Classification: H04J

Abstract:
1. An optical WDM transmitting and receiving device including at least one optical transceiver unit and an optical filter unit: (a) the at least one optical transceiver unit including a transmitting unit: (b) the at least one optical transceiver unit including a receiving unit adapted to receive an optical reception signal fed to it via an optical input port of the transceiver unit from a channel output port of an optical demultiplexer unit included in the optical filter unit having channel output ports each allocated to the same channel wavelength as the channel input ports of the optical multiplexer unit, wherein the receiving unit converts an optical signal fed to it into an electrical reception signal; (c) the at least one optical transceiver unit including a controller unit that drives the transmitting unit so that an optical transmission signal is generated with a specified channel wavelength; (d) wherein the receiving unit feeds the opto-electrically converted reception signal to the controller unit; (e) wherein the same channel wavelength is allocated to the channel input port of the optical multiplexer unit which is connected to the optical output port of the transceiver unit and to the channel output port of the optical demultiplexer unit which is connected to the optical input port of the receiving unit; (f) wherein a portion of the optical power of a WDM transmission signal created at a WDM output port of the multiplexer unit is supplied to a WDM input port of the demultiplexer unit; and (g) wherein the controller unit is adapted to be set into tuning mode in which the following actions are carried out: