Adaptive compensation control method and module, and optical switching system

Patent metadata

Field	Value
Publication number	US-9807479-B2
Application number	US-201615218812-A
Country	US
Kind code	B2
Filing date	Jul 25, 2016
Priority date	Jan 26, 2014
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

An adaptive compensation control method for optical communications technologies, which includes acquiring optical label information of an optical signal, where the optical label information carries information about a destination receive port of the optical signal, determining, according to the information about the destination receive port of the optical signal, a switching path, in an optical switch switching matrix, of the optical signal, and determining an optical switch compensation value of the optical signal according to a preset compensation value of each optical switch cell on the switching path, where the optical switch compensation value is used to compensate the optical signal.

First claim

What is claimed is:

1. An adaptive compensation control method, comprising:
acquiring optical label information of an optical signal, wherein the optical label information carries information about a destination receive port of the optical signal, wherein the information about the destination receive port comprises a number of the destination receive port;
performing matching in a preset optical switch configuration table by using a number of a transmit port, to which the optical signal is transmitted, of an optical switch switching matrix and the number of the destination receive port as indexes, to determine a optical switch compensation value of the optical signal; and
wherein the optical switch compensation value is used to compensate the optical signal, the preset optical switch configuration table comprises a one-to-one correspondence among the number of the transmit port of the optical switch switching matrix, the number of the destination receive port, and the optical switch compensation value.

2. The method according to claim 1 , wherein the optical switch compensation value is an optical switch phase compensation value.

3. The method according to claim 1 , wherein the optical switch compensation value is an optical switch polarization state compensation value.

4. The method according to claim 1 , wherein the method further comprises:
detecting an output value of a destination receive port, to which the optical signal is transmitted, of the optical switch switching matrix;
obtaining a difference value between the output value of the destination receive port and a preset target value of the optical signal; and
modifying, in the preset optical switch configuration table, and in response to the difference value being greater than a preset modification threshold, the optical switch compensation value of the optical signal by using the number of the transmit port, to which the optical signal is transmitted, of the optical switch switching matrix and the number of the destination receive port as indexes.

5. The method according to claim 1 , wherein the method further comprises:
detecting a value that is obtained after the optical signal is compensated and an output value of a destination receive port, to which the optical signal is transmitted, of the optical switch switching matrix;
obtaining a difference value between the value that is obtained after the optical signal is compensated and the output value of the destination receive port; and
modifying, in the preset optical switch configuration table and in response to the difference value being greater than a preset modification threshold, the optical switch compensation value of the optical signal by using the number of the transmit port, to which the optical signal is transmitted, of the optical switch switching matrix and the number of the destination receive port as indexes.

6. An adaptive compensation control module, wherein the module comprises:
a processor; and
a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions to:
acquire optical label information of an optical signal, wherein the optical label information carries information about a destination receive port of the optical signal, wherein the information about the destination receive port comprises a number of the destination receive port;
performing matching in a preset optical switch configuration table by using a number of a transmit port, to which the optical signal is transmitted, of an optical switch switching matrix and the number of the destination receive port as indexes, to determine the optical switch compensation value of the optical signal; and

wherein the optical switch compensation value is used to compensate the optical signal, the preset optical switch configuration table comprises a one-to-one correspondence among the number of the transmit port of the optical switch switching matrix, the number of the destination receive port, and the optical switch compensation value.

7. The adaptive compensation control module according to claim 6 , wherein the optical switch compensation value is an optical switch phase compensation value.

8. The adaptive compensation control module according to claim 6 , wherein the optical switch compensation value is an optical switch polarization state compensation value.

9. The adaptive compensation control module according to claim 6 , further comprising a first detector configured to detect an output value of a destination receive port, to which the optical signal is transmitted, of the optical switch switching matrix; and
wherein the program further includes instructions to:
obtain a difference value between the output value of the destination receive port and a preset target value of the optical signal; and
modify, in the preset optical switch configuration table, and in response to the difference value being greater than a preset modification threshold, the optical switch compensation value of the optical signal by using the number of the transmit port, to which the optical signal is transmitted, of the optical switch switching matrix and the number of the destination receive port as indexes.

10. The adaptive compensation control module according to claim 6 , further comprising a second detector configured to detect a value that is obtained after the optical signal is compensated and an output value of a destination receive port, to which the optical signal is transmitted, of the optical switch switching matrix; and
wherein the program further includes instructions to:
obtain a difference value between the value that is obtained after the optical signal is compensated and the output value of the destination receive port; and
modify, in the preset optical switch configuration table, and in response to the difference value being greater than a preset modification threshold, the optical switch compensation value of the optical signal by using the number of the transmit port, to which the optical signal is transmitted, of the optical switch switching matrix and the number of the destination receive port as indexes.

11. The method according to claim 1 , wherein the optical switch compensation value is an optical switch power compensation value.

12. The method according to claim 11 , wherein the method further comprises, performing, before the acquiring the optical label information of the optical signal:
performing optical-to-electrical conversion on a part of the optical signal, whose power is of a preset proportion (F), in the optical signal, to obtain an electrical signal;
splitting the electrical signal into a first part of electrical signal and a second part of electrical signal, wherein the first part of electrical signal occupies a first proportion (B) of the electrical signal, and the second part of electrical signal occupies a second proportion of the electrical signal;
detecting a power value (A) of the first part of electrical signal;
obtaining a power value (C) of the optical signal according to the power value (A) of the first part of electrical signal, the first proportion (B), and the preset proportion (F), wherein C=A/(B×F); and
obtaining the link power compensation value (E) of the optical signal according to the power value (C) of the optical signal and a preset target power value (D), wherein E=D−C×(1−F).

13. The adaptive compensation control module according to claim 6 , wherein the optical switch compensation value is an optical switch power compensation value.

14. The adaptive compensation control module according to claim 11 , wherein the program

Assignees

• Huawei Tech Co Ltd

Inventors

• Li Shuaibing
• Ma Huixiao
• Yang Xiaoling

Classifications

• H04Q2011/0058

  Crossbar; Matrix · CPC title

• H04B10/25

  Arrangements specific to fibre transmission · CPC title

• H04Q11/0005 Primary

  Switch and router aspects · CPC title

• H04Q2011/005

  Arbitration and scheduling · CPC title

• H04Q2011/0039

  Electrical control · CPC title