Optical transmission/reception device, optical communication system, and optical communication method

Patent metadata

Field	Value
Publication number	US-10581518-B2
Application number	US-201815920847-A
Country	US
Kind code	B2
Filing date	Mar 14, 2018
Priority date	Mar 27, 2014
Publication date	Mar 3, 2020
Grant date	Mar 3, 2020

Abstract

[Solution] This optical transmission/reception device is provided with: a wave separation unit for receiving a wavelength-multiplexed optical signal and separating the same into a plurality of optical signals; a plurality of reception units for receiving each of the plurality of optical signals separated by the wave separation unit; a plurality of output units for outputting optical signals differing in wavelength from each other; a control unit for requesting, in response to the inclusion in the received wavelength-multiplexed optical signal of an optical signal to which a prescribed process has been applied, that a prescribed change be applied to the optical signal outputted by at least one of the plurality of output units; and a wave combining unit for combining the plurality of optical signals outputted from the plurality of output units and outputting the combined signal.

First claim

The invention claimed is:

1. An optical transmission device comprising:
a transponder configured to output an optical signal; and
a multiplexer configured to output a multiplexed optical signal including the optical signal to a transmission path, wherein
the transponder is further configured to, in response to a failure in the transmission path, apply a process to the optical signal.

2. The optical transmission device according to claim 1 , further comprising:
a controller configured to send a processing request to the transponder, wherein
the controller is further configured to:
receive a control signal in response to the failure in the transmission path, and
send the processing request after receiving the control signal, and

the transponder is further configured to, in response to the processing request from the controller, apply the process to the optical signal.

3. The optical transmission device according to claim 1 , further comprising:
a controller configured to send a processing request to the transponder, wherein
the controller is further configured to:
receive a control signal in response to switching a destination of the optical signal, and
send the processing request after receiving the control signal, and

the transponder is further configured to, in response to the processing request from the controller, apply the process to the optical signal.

4. The optical transmission device according to claim 1 , wherein, in response to the failure in the transmission path, the transponder is further configured to add a predetermined pattern to the optical signal.

5. The optical transmission device according to claim 1 , wherein, in response to the failure in the transmission path, the transponder is further configured to scramble the optical signal.

6. The optical transmission device according to claim 1 , wherein, in response to the failure in the transmission path, the transponder is further configured to degrade optical properties of the optical signal.

7. An optical communication system comprising:
an optical transmission device configured to output a multiplexed optical signal; and
an optical reception device configured to receive the multiplexed optical signal, wherein the optical transmission device comprises:
a transponder configured to output an optical signal; and
a multiplexer configured to output the multiplexed optical signal including the optical signal to a transmission path, wherein
the transponder is further configured to, in response to a failure in the transmission path, apply a process to the optical signal.

8. The optical communication system according to claim 7 , further comprising:
a controller configured to send a processing request to the transponder, wherein
the controller is further configured to:
receive a control signal in response to the failure in the transmission path; and
send the processing request after receiving the control signal, and

the transponder is further configured to, in response to the processing request from the controller, apply the process to the optical signal.

9. The optical communication system according to claim 7 , further comprising:
a controller configured to send a processing request to the transponder, wherein
the controller is further configured to:
receive a control signal in response to switching a destination of the optical signal; and
send the processing request after receiving the control signal, and

the transponder is further configured to, in response to the processing request from the controller, apply the process to the optical signal.

10. The optical communication system according to claim 7 , wherein, in response to the failure in the transmission path, the transponder is further configured to add a predetermined pattern to the optical signal.

11. The optical communication system according to claim 7 , wherein, in response to the failure in the transmission path, the transponder is further configured to scramble the optical signal.

12. The optical communication system according to claim 7 , wherein, in response to the failure in the transmission path, the transponder is further configured to degrade optical properties of the optical signal.

13. An optical communication method performed inside an optical transmission device, the optical communication method comprising:
generating an optical signal;
applying a process to the optical signal in response to a failure in a transmission path;
outputting a multiplexed optical signal including the optical signal to the transmission path;
receiving a control signal in response to switching a destination of the optical signal;
sending a processing request after receiving the control signal; and
applying the process to the optical signal in response to the processing request.

14. The optical communication method according to claim 13 , further comprising, in response to the failure in the transmission path, adding a predetermined pattern to the optical signal.

15. The optical communication method according to claim 13 , further comprising, in response to the failure in the transmission path, scrambling the optical signal.

16. The optical communication method according to claim 13 , further comprising, in response to the failure in the transmission path, degrading optical properties of the optical signal.

Assignees

• Nec Corp

Inventors

• Abe Ryota

Classifications

• H04B10/03 Primary

  Arrangements for fault recovery · CPC title

• H04B10/296

  Transient power control, e.g. due to channel add/drop or rapid fluctuations in the input power · CPC title

• H04B10/80

  Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water · CPC title

• H04J14/0221

  Power control, e.g. to keep the total optical power constant · CPC title

• H04B10/85 Primary

  Protection from unauthorised access, e.g. eavesdrop protection · CPC title