Adaptive compensation control method and module, and optical switching system

• US 9,807,479 B2
• Filed: 07/25/2016
• Issued: 10/31/2017
• Est. Priority Date: 01/26/2014
• Status: Active Grant

• Current Assignee: Mason Licensing LLC (IP Edge LLC)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Li, Shuaibing, Ma, Huixiao, Yang, Xiaoling
• Primary Examiner(s): Wolf, Darren E
• Application Number:
  US15/218,812
• Publication Number:
  US 20160337729A1
• Time in Patent Office: 463 Days
• Field of Search: None
• CPC Class Codes: H04B 10/25 Arrangements specific to fibre transmission
• CPC Class Codes: H04Q 11/0005 Switch and router aspects
• CPC Class Codes: H04Q 2011/0039 Electrical control
• CPC Class Codes: H04Q 2011/005 Arbitration and scheduling
• CPC Class Codes: H04Q 2011/0058 Crossbar; Matrix

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.

Claims

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.

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).

14. The adaptive compensation control module according to claim 11, wherein the program further includes instructions to, before the acquiring optical label information of the optical signal:

perform 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;

split 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;

detect a power value (A) of the first part of electrical signal;

obtain 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

obtain 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).

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.

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

15. An optical switching system, wherein the optical switching system comprises:

an optical switch switching matrix;

a first processor; and

a second processor,

wherein the first processor is configured 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;

perform matching in a preset optical switch configuration table by using a number of a 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, to determine an 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; and

send the optical switch compensation value of the optical signal to the second processor;

wherein the second processor is configured to receive the optical switch compensation value, sent by the first processor, of the optical signal; and

compensate the optical signal according to the optical switch compensation value of the optical signal, and send the optical signal to the optical switch switching matrix; and

wherein the optical switch switching matrix is configured to receive the compensated optical signal sent by the second processor, and perform optical switching on the compensated optical signal.

16. The system according to claim 15, wherein the optical switch compensation value is an optical switch phase compensation value.

17. The system according to claim 15, wherein the optical switch compensation value is an optical switch polarization state compensation value.

18. The system according to claim 15, wherein the first processor is further configured to:

detect an output value of a destination receive port, to which the optical signal is transmitted, of the optical switch switching matrix;

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.

19. The system according to claim 15, wherein the first processor is further 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;

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.