KR102416849B1 - Apparatus of detecting leakage near channel light signal in wavelength division multiplexing system - Google Patents

Abstract

In the multi-channel wavelength division multiplexing system according to an embodiment of the present invention, the apparatus for detecting and correcting adjacent channel optical signal leakage includes a physical link error detection unit for detecting whether a physical link error has occurred, and the physical link error detection unit by the physical link error detection unit. Upon detection, it is checked whether the physical link error has occurred due to the inflow of an optical signal generated from an adjacent channel, and a crosstalk checker that generates and provides a wavelength correction signal according to the check result, and a crosstalk checker received from the crosstalk checker and a wavelength compensator for compensating the wavelength of the corresponding optical module according to the wavelength compensating signal.

Description

Apparatus for detecting and calibrating adjacent channel optical signal leakage in multi-channel wavelength division multiplexing system and method for implementing the same

The present invention relates to an apparatus for detecting and calibrating an adjacent channel optical signal leakage and a method for performing the same, and more particularly, to an apparatus for detecting and calibrating an adjacent channel optical signal leakage in a multi-channel wavelength division multiplexing system and a method for implementing the same.

In general, the Wavelength Division Multiplexing (WDM) system is a very economical optical transmission method that can easily increase the transmission capacity because several different wavelengths are bundled and transmitted through one optical fiber, and also various types of dependent signals. It is very effective as an optical transport network that provides next-generation multimedia services.

In order to further increase the transmission capacity in the transmission method of the wavelength division multiplexing system, it is possible to increase the transmission capacity by increasing the number of channels. However, in this method, as the number of channels increases, the wavelength interval between channels becomes narrower, so the number of channels must be increased in consideration of the optical fiber loss bandwidth and the amplification bandwidth of the optical fiber amplifier.

In addition, since the wavelength interval between channels is narrowed, the mutual influence between neighboring channels is increased. Therefore, monitoring the performance of an optical signal is emerging as a more important problem in terms of system reliability.

Factors that affect the performance of the wavelength division multiplexing system include the light intensity, wavelength, and optical signal to noise ratio (OSNR) of each channel. not only causes performance degradation by reducing

However, in the wavelength division multiplexing system described above, since sensitive optical elements are used, there are many cases of poor progress after product installation.

However, it is very difficult to determine whether a physical link is caused by a crosstalk error in a wavelength division multiplexing system. When crosstalk occurs, a physical link error occurs when the optical power of the adjacent channel is on. Therefore, in a situation where the root cause is not analyzed, it is often solved by replacing the optical module or board.

It is an object of the present invention to provide an apparatus for detecting and correcting an optical signal leakage of an adjacent channel in a multi-channel wavelength division multiplexing system that enables monitoring and correction of disturbances caused by an optical signal flowing into an adjacent optical channel in wavelength division multiplexing and a method for implementing the same do it with

In addition, the present invention determines the optical signal leakage of the adjacent channel when a link failure occurs, and then controls the temperature of the module in which the laser temperature control device is built in to move the optical wavelength to prevent the signal from flowing into the adjacent optical channel. An object of the present invention is to provide an apparatus for detecting and calibrating adjacent channel optical signal leakage in a multi-channel wavelength division multiplexing system that enables equipment to be restored to normal, and a method for implementing the same.

In addition, the present invention determines the optical signal leakage of an adjacent channel when a link failure occurs, and then controls the temperature of the module in which the laser temperature control device is built in to move the optical wavelength to eliminate the leaked signal, thereby solving the system failure. An object of the present invention is to provide an apparatus for detecting and calibrating adjacent channel optical signal leakage in a channel wavelength division multiplexing system and a method for implementing the same.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the appended claims.

In a multi-channel wavelength division multiplexing system for achieving this purpose, an adjacent channel optical signal leakage detection and calibration apparatus includes a physical link error detection unit that detects whether a physical link error has occurred, and a physical link error detection unit when the physical link error is detected by the physical link error detection unit. A crosstalk checker that checks whether the physical link error has occurred due to the inflow of an optical signal generated from an adjacent channel, and generates and provides a wavelength correction signal according to the check result, and a wavelength correction received from the crosstalk checker and a wavelength correction unit for correcting the wavelength of the corresponding optical module according to the signal.

In addition, the adjacent channel optical signal leakage detection and calibration method executed in the adjacent channel optical signal leakage detection and calibration apparatus of the multi-channel wavelength division multiplexing system for achieving this object includes the steps of detecting whether a physical link error has occurred, the physical link If an error is detected, checking whether the physical link error has occurred due to the inflow of an optical signal generated from an adjacent channel, determining whether a physical link error has occurred due to crosstalk according to the check result, and the determination and correcting the wavelength of the corresponding optical module according to the result.

According to the present invention as described above, there is an advantage in that it is possible to monitor and correct a disturbance caused by an optical signal flowing into an adjacent optical channel in wavelength division multiplexing.

In addition, according to the present invention, after determining the optical signal leakage of the adjacent channel when a link failure occurs, the temperature of the module in which the laser temperature control device is embedded is controlled to move the optical wavelength to prevent the signal from flowing into the adjacent optical channel. It has the advantage of being able to restore the equipment to normal operation.

In addition, according to the present invention, after determining the optical signal leakage of an adjacent channel when a link failure occurs, the system failure can be solved by controlling the temperature of the module in which the laser temperature control device is built in and removing the leaked signal by moving the optical wavelength. There is this.

1 is a diagram for explaining a conventional multi-channel wavelength division multiplexing system.
2 is a graph for explaining the inflow of an optical signal of a conventional adjacent channel.
3 is a block diagram for explaining the internal structure of an adjacent channel optical signal leakage detection and calibration apparatus according to an embodiment of the present invention.
4 is a flowchart for explaining an embodiment of a method for detecting and calibrating an adjacent channel optical signal leakage in a multi-channel wavelength division multiplexing system according to the present invention.
5 is a flowchart illustrating another embodiment of a method for detecting and calibrating an adjacent channel optical signal leakage in a multi-channel wavelength division multiplexing system according to the present invention.

The above-described objects, features and advantages will be described below in detail with reference to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

As used herein, “crosstalk” refers to an optical signal flowing from an adjacent optical channel in a multi-channel wavelength division multiplexing system.

Among the terms used herein, “laser temperature control device” is a device in which the wavelength of a laser is changed according to temperature.

1 is a diagram for explaining a conventional multi-channel wavelength division multiplexing system. 2 is a graph for explaining the inflow of an optical signal of a conventional adjacent channel.

1 and 2, the multi-channel wavelength division multiplexing system includes a WDM (10_1 to 10_N, 13_1 to 13_N), an optical module (11_1 to 11_N, 14_1 to 14_N), and a physical link (12_1 to 12_N, 15_1 to 15_N).

The WDM (10_1 to 10_N, 13_1 to 13_N) divides the optical signal passing through each of the optical modules 11_1 to 11_N and 14_1 to 14_N into several pieces so that the wavelength is transmitted through each of the optical modules 11_1 to 11_N and 14_1 to 14_N. Independent data transmission. The WDMs 10_1 to 10_N and 13_1 to 13_N set a path by allocating optical wavelengths along the physical links 12_1 to 12_N and 15_1 to 15_N between the source node and the destination node.

WDMs (10_1 to 10_N, 13_1 to 13_N) are also classified into CWDM and DWDM according to wavelength density. D(Dense) WDM arranges wavelengths densely at intervals of 0.4nm (50GHz), 0.8nm (100GHz), etc. by dense wavelength division multiplexing. C (Coarse) WDM has a wider channel spacing than DWDM and has an interval of about 20 to 40 nm.

The WDM (10_1 to 10_N, 13_1 to 13_N) converts an optical signal into an electrical signal and provides it to the optical modules 11_1 to 11_N and 14_1 to 14_N, the optical module 11_1 to 11_N, 14_1 to 14_N provides an electrical signal converted into an optical signal.

Factors that affect the performance of the wavelength division multiplexing system include the light intensity, wavelength, and optical signal to noise ratio (OSNR) of each channel. It not only causes performance degradation by reducing

However, in the wavelength division multiplexing system described above, since sensitive optical elements are used, there are many cases of poor progress after product installation.

However, in the wavelength division multiplexing system, it is very difficult to determine whether the cause of the physical links 12_1 to 12_N and 15_1 to 15_N is due to a crosstalk error. When crosstalk occurs, a physical link error occurs when the optical power of the adjacent channel is on. Therefore, in a situation where the root cause is not analyzed, it is often solved by replacing the optical module or board.

3 is a block diagram for explaining the internal structure of an adjacent channel optical signal leakage detection and calibration apparatus according to an embodiment of the present invention.

Referring to FIG. 3 , the adjacent channel optical signal leakage detection and calibration apparatus 100 includes a physical link error detection unit 110 , a crosstalk check unit 120 , and a wavelength correction unit 130 .

The physical link error detection unit 110 detects whether a physical link error has occurred.

In one embodiment, the physical link error detection unit 110 detects a physical link error of decoding in a PHY such as 8B/10B, 64B/66B, etc., and provides the crosstalk check unit 120 with whether a physical link error is detected. .

When a physical link error is detected by the physical link error detection unit 110 , the crosstalk check unit 120 checks whether a physical link error has occurred due to the inflow of an optical signal generated from an adjacent channel.

When a physical link error is detected by the physical link error detection unit 110 , the crosstalk check unit 120 generates an alarm report in the system management block and then switches the optical power of the adjacent channel of the opposite system to the OFF state.

When a physical link error is detected by the physical link error detection unit 110 , the crosstalk check unit 120 switches the optical power of the adjacent channel of the opposite system to the ON state, and then sends a wavelength correction signal to the wavelength correction unit 130 . to provide. Accordingly, the wavelength correction unit 130 corrects the wavelength of the self-channel optical module.

As described above, when a physical link error is detected in a state in which the optical power of the adjacent channel of the opposite system is switched to the off state, the crosstalk check unit 120 determines that there is an abnormality in the own channel optical module and to correct the wavelength.

When a physical link error is not detected by the physical link error detection unit 110 , the crosstalk check unit 120 switches the optical power state of the adjacent left channel of the opposite system to the ON state.

Thereafter, the crosstalk check unit 120 provides a wavelength correction signal to the wavelength correction unit 130 when a physical link error is detected by the physical link error detection unit 110 . Accordingly, the wavelength correction unit 130 corrects the wavelength of the optical module of the left channel.

As described above, when a physical link error is detected by the physical link error detection unit 110 in a state in which the optical power of the left channel is switched to the on state, the crosstalk check unit 120 detects a left channel optical power by It is determined that a physical link error is detected and the wavelength of the left channel optical module is corrected.

Meanwhile, when the physical link error is not detected by the physical link error detection unit 110 , the crosstalk check unit 120 switches the optical power of the adjacent right channel of the opposite system to the ON state.

Thereafter, the crosstalk check unit 120 provides a wavelength correction signal when a physical link error is detected by the physical link error detection unit 110 . Accordingly, the wavelength correction unit 130 corrects the wavelength of the optical module of the right channel.

As described above, when a physical link error is detected by the physical link error detection unit 110 in a state in which the optical power of the right channel is switched to the on state, the crosstalk check unit 120 detects a physical link error by the optical signal of the right channel. It is determined that a physical link error is detected and the wavelength of the left channel optical module is corrected.

Meanwhile, the crosstalk check unit 120 completes the calibration procedure when the physical link error is not detected by the physical link error detection unit 110 .

When the wavelength correction unit 130 receives the wavelength correction signal from the crosstalk check unit 120, it analyzes a wavelength section that does not leak to an adjacent channel through a wavelength swap using the laser temperature control device in the optical module to optimize the light. Reset the wavelength position to finally normalize the link alarm.

The laser temperature control device in the optical module is a device that changes the wavelength of the laser according to the temperature, and a number (N) is assigned to each laser. Accordingly, the wavelength correction unit 130 may increase or decrease the number of each laser to change the temperature indicated by the number of the laser.

Hereinafter, a process of correcting the wavelength will be described with reference to [Table 1].

When the wavelength correction unit 130 receives the wavelength correction signal from the crosstalk check unit 120, as shown in (1) of [Table 1], after switching the power state of the target channel optical module of the opposite system to the on state, As shown in (3) of [Table 1], the laser number (ie, Current TEC value) indicated by the temperature of the laser temperature control device of the target channel optical module is stored.

Thereafter, the wavelength correction unit 130 converts the wavelength correction mode of the target channel optical module from the off state to the on state as shown in (3) of [Table 1] to correct the wavelength of the target channel optical module. do.

First, the wavelength correction unit 130 increases the number indicated by the laser of the laser temperature control device as shown in (4) of [Table 1] (ie, TEC LUT N++; ), and then to the physical link error detection unit 110 It is determined whether the number indicated by the laser is a normal physical link laser number or an abnormal physical link laser number according to whether or not a physical link error is detected.

In one embodiment, as shown in (5) to (8) of [Table 1], the wavelength correcting unit 130 increases the number indicated by the laser of the laser temperature control device and then physically by the physical link error detection unit 110 If a link error is not detected, the number indicated by the laser of the laser temperature control device may be determined as a normal physical link laser number (ie, Good_LUT #N = Current TEC value).

In another embodiment, as shown in (5) to (8) of [Table 1], the wavelength correction unit 130 increases the number indicated by the laser of the laser temperature control device, and then by the physical link error detection unit 110 If a physical link error is detected, the number indicated by the laser of the laser temperature control device may be determined as an abnormal physical link laser number (ie, Bad_LUT #N = Current TEC value).

After that, the wavelength correcting unit 130 includes an abnormal physical link laser number (Bad_LUT #N) or a normal physical link laser number (Good_LUT #N) and a laser temperature control device as shown in (9) and (10) of [Table 1]. Compare each number of lasers (Current_N).

If the physical link error is not detected, since the number indicated by the laser of the laser temperature control device is determined as the normal physical link laser number in step S535, the wavelength correction unit 130 adjusts the normal physical link laser number and the laser temperature. Each number of lasers in the device will be compared.

On the other hand, when a physical link error is detected, since the number indicated by the laser of the laser temperature control device is determined as the abnormal physical link laser number, the wavelength corrector 130 sets the abnormal physical link laser number and the laser of the laser temperature control device, respectively. will compare the number of

If, the wavelength correction unit 130 has an abnormal physical link laser number (Bad_LUT #N) or a normal physical link laser number (Good_LUT #N) is greater than each laser number of the laser temperature control device, the abnormal physical link laser number ( Bad_LUT #N) and each laser number (Current_N) of the laser temperature control device are compared.

At this time, the wavelength correction unit 130, as shown in (11) of [Table 1], when the abnormal physical link laser number (Bad_LUT #N) is greater than the number (Current_N) of each laser of the laser temperature control device, [Table 1] After recording the number indicated by the corresponding laser on the laser number table parameter as in (12) of [Table 1], and increasing the number of the laser of the laser temperature control device as in (13) of [Table 1] (N++), [Table 1 ], when the physical link error is not detected by the physical link error detection unit 110 as shown in (14), the wavelength correction is terminated.

On the other hand, the wavelength correction unit 130, when the abnormal physical link laser number is smaller than each laser number of the laser temperature control device, the laser number of the laser temperature control device is deleted processing.

[Table 1]

4 is a flowchart for explaining an embodiment of a method for detecting and calibrating an adjacent channel optical signal leakage in a multi-channel wavelength division multiplexing system according to the present invention. An embodiment of FIG. 4 relates to an embodiment of detecting leakage of an adjacent channel optical signal.

Referring to FIG. 4 , the adjacent channel optical signal leakage detection and calibration apparatus 100 detects whether a physical link error has occurred (step S410 ). If the adjacent channel optical signal leakage detection and calibration apparatus 100 has detected a physical link error (step S410), it generates an alarm report in the system management block (step S415). The adjacent channel optical signal leakage detection and calibration apparatus 100 switches the adjacent channel optical power of the opposite system to the off state (step S420).

The adjacent channel optical signal leakage detection and calibration apparatus 100 detects whether a physical link error has occurred (step S425). If the adjacent channel optical signal leakage detection and calibration device 100 is detected as a physical link error (step S425), after switching the state of the adjacent channel optical power of the opposite system to the on state (step S430), the wavelength of its own channel optical module Correction (step S435).

The adjacent channel optical signal leakage detection and calibration apparatus 100 turns on the optical power state of the adjacent left channel of the opposite system when the adjacent channel optical signal leakage detection and calibration apparatus 100 does not detect a physical link error (step S425) After switching to (step S440), it is detected whether a physical link error has occurred (step S445).

Adjacent channel optical signal leakage detection and calibration apparatus 100, if the physical link error is detected (step S445), corrects the wavelength of the optical module of the left channel (step S450), the state of the optical power of the adjacent left channel of the opposite system It is switched to the ON state (step S455).

Thereafter, the adjacent channel optical signal leakage detection and calibration apparatus 100 detects whether a physical link error has occurred (step S460). If a physical link error occurs (step S460), the adjacent channel optical signal leakage detection and calibration apparatus 100 corrects the wavelength of the optical module of the right channel (step S465).

On the other hand, if the adjacent channel optical signal leakage detection and calibration apparatus 100 does not detect a physical link error (step S460), the calibration procedure is completed.

5 is a flowchart illustrating another embodiment of a method for detecting and calibrating an adjacent channel optical signal leakage in a multi-channel wavelength division multiplexing system according to the present invention. An embodiment of FIG. 5 relates to an embodiment of correcting a wavelength of an optical module.

Referring to FIG. 5 , the adjacent channel optical signal leakage detection and calibration apparatus 100 switches the power state of the target channel optical module of the opposite system to the on state (step S510 ).

The adjacent channel optical signal leakage detection and calibration device 100 stores the laser number indicated by the temperature of the laser temperature control device of the target channel optical module (Dingye S515).

The adjacent channel optical signal leakage detection and calibration apparatus 100 converts the wavelength correction mode of the target channel optical module from the off state to the on state to correct the wavelength of the target channel optical module (step S520).

First, the adjacent channel optical signal leakage detection and calibration device 100 determines the current laser number by increasing the number indicated by the laser of the laser temperature control device (step S525), and then depending on whether a physical link error is not detected (step S525) S530), the number indicated by the laser of the laser temperature control device may be determined as a normal physical link laser number or an abnormal physical link laser number (step S535, step S540).

In an embodiment, the adjacent channel optical signal leakage detection and calibration apparatus 100 increases the number indicated by the laser of the laser temperature control device and then if the physical link error is not detected by the physical link error detection unit 110, the laser The number indicated by the laser of the temperature control device may be determined as the normal physical link laser number (step S535).

In another embodiment, the adjacent channel optical signal leakage detection and calibration apparatus 100 increases the number indicated by the laser of the laser temperature control device and then if the physical link error is detected by the physical link error detection unit 110, the laser temperature The number indicated by the laser of the control device may be determined as the abnormal physical link laser number (step S540).

After that, the adjacent channel optical signal leakage detection and calibration device 100 compares the abnormal physical link laser number or the normal physical link laser number and the laser number of the laser temperature control device (step S545).

If the physical link error is not detected in step S530, since the number indicated by the laser of the laser temperature control device is determined as the normal physical link laser number in step S535, the adjacent channel optical signal leakage detection and calibration device 100 is normal We will compare the number of the physical link laser and the number of each laser in the laser thermostat.

On the other hand, when a physical link error is detected in step S530, since the number indicated by the laser of the laser temperature control device is determined as the abnormal physical link laser number in step S540, the adjacent channel optical signal leakage detection and calibration apparatus 100 is abnormal physical The link laser number will be compared with the respective number of the laser of the laser thermostat.

At this time, the adjacent channel optical signal leakage detection and calibration device 100 returns to step S525 when the abnormal physical link laser number or the normal physical link laser number and the laser number of the laser temperature control device are smaller than the respective numbers of the laser temperature control device. Increase the indicated number to determine the current laser number.

In contrast, if the adjacent channel optical signal leakage detection and calibration device 100 is greater than the abnormal physical link laser number or the normal physical link laser number and each number of the laser of the laser temperature control device, the abnormal physical link laser number and the current laser number Compare.

In one embodiment, the adjacent channel optical signal leakage detection and calibration apparatus 100, if the abnormal physical link laser number is greater than the current laser number (step S550), after recording the number indicated by the laser on the laser number table parameter ( Step S555) If the physical link error is not detected by the physical link error detection unit 110 (step S560), the wavelength correction is terminated.

In another embodiment, the adjacent channel optical signal leakage detection and calibration device 100, when the abnormal physical link laser number is smaller than each number of the laser of the laser temperature control device (step S550), the laser number of the laser temperature control device is delete processing.

Although it has been described with reference to the limited embodiments and drawings, the present invention is not limited to the above embodiments, and various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains. Accordingly, the spirit of the present invention should be understood only by the claims described below, and all equivalents or equivalent modifications thereof will fall within the scope of the spirit of the present invention.

100: adjacent channel optical signal leakage detection calibration device;
110: physical link error detection unit;
120: crosstalk check unit;
130: wavelength correction unit

Claims (6)

An apparatus for detecting and calibrating adjacent channel optical signal leakage in a multi-channel wavelength division multiplexing system, comprising:
a physical link error detection unit for detecting whether a physical link error has occurred;
When a physical link error is detected, an alarm report is created in the system management block, the state of the optical power of the adjacent channel of the opposite system is turned off, and the state of the optical power of the adjacent channel of the opposite system is turned off. When a physical link error is detected, it is determined that there is an abnormality in the self-channel optical module, and a wavelength correction signal is provided to correct the wavelength of the self-channel optical module. If no physical link error is detected, the optical power of the adjacent left channel of the opposite system is If a physical link error is detected when the state is switched to the on state and the optical power of the left channel is switched to the on state, it is determined that a physical link error is detected by the optical signal of the left channel, and a wavelength correction signal is provided to correct the wavelength, and when no physical link error is detected, the state of the optical power of the adjacent right channel of the opposite system is turned on, and the state of the optical power of the adjacent right channel of the opposite system is changed a crosstalk check unit that provides a wavelength correction signal to correct a wavelength of a right channel optical module when a physical link error is detected in an on state; and
When the wavelength correction signal is received, a wavelength correction unit that analyzes a wavelength section that does not leak to an adjacent channel through a wavelength swap using the laser temperature control device in the optical module, resets the optical wavelength position, and finally normalizes the link alarm. do,
The laser temperature control device is
The wavelength of the laser changes according to the temperature, and a number is assigned to each laser, and by changing the number of the laser, the temperature indicated by the number of the laser is changed,
The wavelength correction unit
Upon receiving the wavelength correction signal from the crosstalk check unit, after switching the power state of the target channel optical module of the opposite system to the on state, the laser number indicated by the temperature of the laser temperature control device of the target channel optical module is stored, If the physical link error is not detected by the physical link error detection unit after increasing the number indicated by the laser of the laser temperature control device, the number indicated by the laser of the laser temperature control device is determined as the normal physical link laser number, and If the physical link error is detected by the physical link error detection unit, the number indicated by the laser of the laser temperature control device is determined as the abnormal physical link laser number, and the abnormal physical link laser number or the normal physical link laser number and the laser of the laser temperature control device are determined. Each number is compared, and when the abnormal physical link laser number or the normal physical link laser number is greater than the laser respective number of the laser thermostat, compare the abnormal physical link laser number and the respective number of the laser of the laser thermostat, , If the abnormal physical link laser number is larger than the laser number of the laser temperature control device, if the physical link error is not detected by the physical link error detection unit after recording the number indicated by the laser on the laser number table parameter, the wavelength Compensation is finished, and when the abnormal physical link laser number is smaller than each laser number of the laser temperature control device, the laser number of the laser temperature control device is deleted
Adjacent channel optical signal leakage detection and calibration device.
delete delete An adjacent channel optical signal leakage detection and calibration method executed in an adjacent channel optical signal leakage detection and calibration apparatus of a multi-channel wavelength division multiplexing system, the method comprising:
detecting whether a physical link error has occurred;
when the physical link error is detected, checking whether the physical link error has occurred due to inflow of an optical signal generated from an adjacent channel;
determining whether a physical link error has occurred due to crosstalk according to the check result; and
Comprising the step of correcting the wavelength of the optical module according to the determination result,
The step of determining whether a physical link error has occurred due to crosstalk according to the check result includes:
When the physical link error is detected, an alarm report is generated in the system management block, the state of the optical power of the adjacent channel of the opposite system is switched to the off state, and the state of the optical power of the adjacent channel of the opposite system is switched to the off state. providing a wavelength correction signal to correct the wavelength of the self-channel optical module by determining that there is an abnormality in the self-channel optical module when a physical link error is detected;
If the physical link error is not detected, the state of the optical power of the adjacent left channel of the opposite system is switched to the on state, and when the state of the optical power of the left channel is switched to the on state, when a physical link error is detected, the left determining that a physical link error is detected by the optical signal of the channel and providing a wavelength correction signal to correct the wavelength of the left channel optical module; and
If the physical link error is not detected, the state of the optical power of the adjacent right channel of the opposite system is turned on, and the state of the optical power of the adjacent right channel of the opposite system is turned on. providing a wavelength correction signal to correct the wavelength of the right channel optical module when
The step of correcting the wavelength of the corresponding optical module according to the determination result is
storing the laser number indicated by the temperature of the laser temperature control device of the target channel optical module after switching the power state of the target channel optical module of the opposite system to the on state when receiving the wavelength correction signal;
determining the number indicated by the laser of the laser temperature control device as a normal physical link laser number if a physical link error is not detected after increasing the number indicated by the laser of the laser temperature control device;
If the physical link error is detected, the number indicated by the laser of the laser temperature control device is determined as the abnormal physical link laser number, and the abnormal physical link laser number or the normal physical link laser number and the laser number of the laser temperature control device are compared. to do;
If the abnormal physical link laser number or the normal physical link laser number is greater than each number of lasers of the laser temperature control device, comparing the abnormal physical link laser number and each number of the lasers of the laser temperature control device;
If the abnormal physical link laser number is larger than the laser number of the laser temperature control device, after recording the number indicated by the laser on the laser number table parameter, if no physical link error is detected, terminating the wavelength correction; and
When the abnormal physical link laser number is smaller than each laser number of the laser temperature control device, the laser number of the laser temperature control device is characterized in that it comprises the step of deleting processing
Adjacent channel optical signal leakage detection calibration method.
delete delete

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