DEVICE AND A METHOD FOR MERGING OPTICAL COMPONENTS ASSOCIATED WITH ONE WAVELENGTH INTO A MERGED OPTICAL COMPONENT

• US 20130022354A1
• Filed: 07/18/2012
• Published: 01/24/2013
• Est. Priority Date: 07/21/2011
• Status: Active Grant

• Current Assignee: Orange S.A.
• Original Assignee: Orange S.A.
• Inventors: Bonald, Thomas, Indre, Raluca-Maria, Cuda, Davide
• Granted Patent: US 9,351,054 B2
• Time in Patent Office: Days
• US Class Current: 398/48
• CPC Class Codes: H04J 14/0212 using optical switches or wavelength selective switches [WSS]
• CPC Class Codes: H04J 14/0217 Multi-degree architectures, e.g. having a connection degree greater than two
• CPC Class Codes: H04Q 11/0005 Switch and router aspects
• CPC Class Codes: H04Q 2011/0013 using gating amplifiers
• CPC Class Codes: H04Q 2011/0015 using splitting combining
• CPC Class Codes: H04Q 2011/0016 using wavelength multiplexing or demultiplexing
• CPC Class Codes: H04Q 2011/0024 using space switching

Abstract

A device and a method are provided for merging a plurality of optical components associated with one wavelength into an optical component associated with the wavelength. The merging device includes, for each optical component of the plurality of components for merging: an optical element arranged to switch to a blocking position for blocking the optical component for merging, as a function of a blocking signal; a duplication element arranged to duplicate the optical component for merging for sending to combination element. The combination element is arranged to obtain the blocking signal by combining the duplicated optical components of the plurality of components other than the optical component for merging. A merging element is arranged to merge the optical components output by the optical element. The merging device may be integrated in an optical combiner of optical signals.

Claims

1. A merging device for merging a plurality of optical components associated with one wavelength into an optical component associated with said wavelength, the device comprising, for each optical component of said plurality of components for merging:

an optical element arranged to switch to a blocking position for blocking said optical component for merging, as a function of a blocking signal;

a duplication element arranged to duplicate said optical component for merging for sending to combination element;

a combination element, arranged to obtain said blocking signal by combining the duplicated optical components of the plurality of components other than said optical component for merging; and

a merging element arranged to merge the optical components output by the optical element.

2. The merging device according to claim 1, wherein the optical element is also arranged to amplify the optical component, and the duplication element is connected to the outputs of the optical element.

3. The merging device according to claim 1, wherein the optical element is also arranged to amplify the optical component, and the duplication element is connected to the inputs of the optical element.

4. The merging device according to claim 1, further including, for each optical component of said plurality of components for merging, a delay element arranged to apply a delay of predetermined fixed duration to said optical component for merging, the delay element being connected to the inputs of the blocking element associated with said optical component for merging.

5. The merging device according to claim 1, wherein in the blocking position, the optical element diverts said optical component for merging to an injection element arranged to reinject said optical component into an optical fiber going back to a source node.

6. The merging device according to claim 1, wherein a control unit forms the combination element.

7. The merging device according to claim 4, wherein a control unit forms the combination element.

8. The merging device according to claim 5, wherein a control unit forms the combination element.

9. An optical combiner of optical signals, an optical signal comprising optical components associated respectively with a plurality of wavelengths, said optical combiner comprising:

a demultiplexer element respectively associated with an input optical signal and arranged to obtain from the input optical signal a plurality of optical components;

a plurality of merging devices, each associated with one respective wavelength and connected to the outputs of the demultiplexer element, each merging device being configured to merge the plurality of optical components associated with the one respective wavelength into an optical component associated with said wavelength, and each merging device comprising, for each optical component of said plurality of components for merging;

an optical element arranged to switch to a blocking position for blocking said optical component for merging, as a function of a blocking signal;

a duplication element arranged to duplicate said optical component for merging for sending to combination element;

a combination element, arranged to obtain said blocking signal by combining the duplicated optical components of the plurality of components other than said optical component for merging; and

a merging element arranged to merge the optical components output by the optical element; and

a multiplexer element arranged to multiplex the optical components output by the merging devices into an output optical signal.

10. An optical node for aggregating optical signals, an optical signal comprising a plurality of optical components associated with a respective plurality of wavelengths, said node comprising:

an optical combiner of optical signals arranged to combine optical signals received from respective source optical nodes into one optical signal, the optical combiner comprising a merging device for merging the plurality of optical components associated with one wavelength into an optical component associated with said wavelength, the merging device comprising, for each optical component of said plurality of components for merging;

an optical element arranged to switch to a blocking position for blocking said optical component for merging, as a function of a blocking signal, wherein in the blocking position, the optical element diverts said optical component for merging to an injection element arranged to reinject said optical component into an optical fiber going back to the respective source optical node;

a duplication element arranged to duplicate said optical component for merging for sending to combination element;

a combination element, formed by a control unit, arranged to obtain said blocking signal by combining the duplicated optical components of the plurality of components other than said optical component for merging; and

a merging element arranged to merge the optical components output by the optical element; and

an optical signal distribution device arranged to distribute one received optical signal to said source optical nodes.

11. A method for merging a plurality of optical components associated with one wavelength into a merged optical component associated with said wavelength, the method comprising:

a step of duplicating optical components of said plurality of components for merging, during which step said optical components for merging are duplicated;

a step of obtaining blocking signals, in which a blocking signal associated with an optical component for merging is obtained by combining the duplicated optical components of the plurality of components other than said optical component for merging;

a blocking step, during which an optical component for merging is blocked as a function of the associated blocking signal; and

a step of obtaining the merged optical component associated with the wavelength from a non-blocked optical component.

12. A method of optically combining optical signals, an optical signal comprising optical components associated with a respective plurality of wavelengths, the method comprising:

a step of demultiplexing the input optical signals in order to obtain a plurality of optical components from an input optical signal;

implementing a method for merging a plurality of optical components associated with one wavelength, as obtained from input optical signals in the demultiplexing step, into a merged optical component associated with said wavelength, the method comprising;

a step of duplicating optical components of said plurality of components for merging, during which step said optical components for merging are duplicated;

a step of obtaining blocking signals, in which a blocking signal associated with an optical component for merging is obtained by combining the duplicated optical components of the plurality of components other than said optical component for merging;

a blocking step, during which an optical component for merging is blocked as a function of the associated blocking signal; and

a step of obtaining the merged optical component associated with the wavelength from a non-blocked optical component; and

a step of multiplexing the output optical signals obtained by implementing the method of for merging into an output optical signal.