CN115603804A

CN115603804A - Filter shape detection method, system, electronic device and storage medium

Info

Publication number: CN115603804A
Application number: CN202110768532.XA
Authority: CN
Inventors: 尚文东; 施鹄; 陈欢
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2023-01-13
Also published as: WO2023279955A1

Abstract

The application relates to the technical field of optical communication, and discloses a method and a system for detecting the shape of a filter, electronic equipment and a storage medium, wherein the method for detecting the shape of the filter comprises the following steps: determining a plurality of signals with different frequencies provided by the integrated tunable laser ITLA as detection signals; acquiring actual power of the detection signals with different frequencies when the detection signals are received after being transmitted through a target path, wherein the target path is an optical transmission network channel needing to detect the shape of a channel filter; and determining the shape of a channel filter of the target path according to the actual power. The method and the device realize the detection of the shape of the filter in the optical transmission network, thereby realizing the estimation of the filtering damage of the channel filter according to the obtained shape of the filter.

Description

Filter shape detection method, system, electronic device and storage medium

Technical Field

The embodiment of the application relates to the technical field of optical communication, in particular to a method and a system for detecting the shape of a filter, electronic equipment and a storage medium.

Background

In the optical transmission networks of 100G and over 100G, with the increase of the transmission rate of the service signal and the bandwidth reduction in the end-to-end transmission process of the service signal, the filtering damage of the channel filter to the high-frequency component of the service signal gradually becomes a main factor limiting the system capacity and the transmission distance. Meanwhile, in the future, a Dense Wavelength Division Multiplexing (DWDM) system evolves toward high dimensionality, high flexibility, intellectualization and the like, and at the moment, the whole system is configured with more Reconfigurable Optical Add-Drop Multiplexer (ROADM) sites so as to improve the cross networking capability of the whole Optical network, but the limitation of filter damage greatly reduces the service feed-through performance, thereby affecting the service transmission performance and reducing the network networking capability. Therefore, how to evaluate the filter impairment of the channel filter is one of the keys for evaluating the optical transmission network, and the evaluation of the filter impairment of the channel filter is usually performed based on the shape of the channel filter, that is, obtaining the shape of the channel filter is the key for evaluating the filter impairment of the channel filter.

However, in a channel of an optical transmission network, there is usually a case where a plurality of filters are cascaded, wherein a system formed by the plurality of filters after being cascaded is a channel filter, and further, it is difficult to directly determine a shape according to each filter participating in the cascade due to the plurality of filter cascades. Therefore, it is desirable to provide a method to enable detection of filter shape in an optical transport network.

Disclosure of Invention

The present disclosure provides a method, a system, an electronic device, and a storage medium for detecting a filter shape, which are used to detect a filter shape in an optical transmission network, so as to estimate a filter damage of a channel filter according to the obtained filter shape.

In order to achieve the above object, an embodiment of the present application provides a method for detecting a filter shape, where the method includes the following steps: determining a plurality of signals with different frequencies provided by the integrated tunable laser ITLA as detection signals; acquiring actual power of the detection signals with different frequencies when the detection signals are received after being transmitted through a target path, wherein the target path is an optical transmission network channel needing to detect the shape of a channel filter; and determining the shape of a channel filter of the target path according to the actual power.

In order to achieve the above object, an embodiment of the present application further provides a detection system for a filter shape, including: the integrated tunable laser ITLA detection device comprises a first determination module, a second determination module and a third determination module, wherein the first determination module is used for determining a plurality of signals with different frequencies provided by the integrated tunable laser ITLA as detection signals; the acquisition module is used for acquiring actual power when the detection signals with different frequencies are received after being transmitted through a target path, wherein the target path is an optical transmission network channel needing to detect the shape of a filter; and the second determining module is used for determining the shape of the channel filter of the target path according to the actual power.

In order to achieve the above object, an embodiment of the present application further provides an electronic device, where the electronic device includes: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of detecting a filter shape as described above.

To achieve the above object, an embodiment of the present application further provides a computer-readable storage medium storing a computer program, which when executed by a processor implements the method for detecting a filter shape as described above.

According to the method for detecting the shape of the filter, an optical signal emitted by an integrated tunable laser ITLA inside an optical module on the line side is used as a detection signal, the detection signal is transmitted in an optical transmission network channel needing to detect the shape of a channel filter, then the power detected when the detection signal passes through the transmission channel and is received at a receiving end is obtained, and then the power spectrum of the channel filter is obtained according to the power, and the power spectrum can be used as the shape of the channel filter, so that the shape of the filter in the optical transmission network is detected, and the estimation of the filtering damage of the channel filter can be further realized according to the obtained shape of the filter. In addition, the ITLA provides that the signal is a narrow pulse signal, so that the bandwidth of the probe signal is small, the frequency is relatively concentrated, the obtained frequency corresponds to the power in receiving more accurately, the obtained spectrogram is more accurate, the frequency difference between different probe signals is small, more probe signals are sent in a certain frequency range, the actual power data volume for determining the shape of the channel filter is large, further more data can be referred to by the shape of the filter obtained according to the actual power, the accuracy and the reliability are improved, and the whole method only needs to use the existing structure or equipment of the optical transmission network, does not need to additionally add other equipment, and does not need to increase the cost.

Drawings

One or more embodiments are illustrated by the corresponding figures in the drawings, which are not meant to be limiting.

FIG. 1 is a schematic diagram of a configuration of a DWDM system including multiple ROADM sites;

FIG. 2 is a flow chart of a method of detecting filter shape in an embodiment of the invention;

fig. 3 is a flowchart of a method for detecting a filter shape according to another embodiment of the present invention, including a step of turning off a signal modulation function of an optical module in which the ITLA is located and/or locking power of a signal transmitted by the optical module in which the ITLA is located;

fig. 4 is a power spectrum at different frequencies of the ITLA after the optical module according to the embodiment of the present invention turns off the modulation signal;

FIG. 5 is a flow chart of a detection method including a filter shape step of determining whether to detect a channel filter shape in another embodiment of the present invention;

FIG. 6 is a flow chart of a detection method including the step of determining a number of transmissions of probe signals of different frequencies in accordance with another embodiment of the present invention;

FIGS. 7-9 are schematic diagrams of channel filters obtained at different scan times according to embodiments of the present invention;

FIG. 10 is a schematic diagram of a filter shape detection system in accordance with another embodiment of the present invention;

fig. 11 is a schematic structural diagram of an electronic device in another embodiment of the present invention.

Detailed Description

It is known from the background art that in an optical transmission network, how to evaluate the filtering impairment of a channel filter is the key, and determining the shape of the channel filter is the key to estimate the filtering impairment. As shown in fig. 1, the DWDM system includes a control layer and a transmission layer, where the control layer has a plurality of core units — Software Defined Network (SDN)/WDM/OTN-based automatic Switched Optical Network (WASON) controllers, which are used to implement intelligent control of the DWDM system, and the transmission layer is described by taking a single-fiber unidirectional DWDM system as an example, and includes Optical transmitters 1 to k and Optical receivers 1 to k, and a plurality of ROADM sites through which target paths pass; the optical transmitter k has two functions, namely, sending an ultra-wideband detection signal to detect the filtering characteristic of a target path; secondly, the network sends 100G/B100G service signals required by the client during normal operation. That is, the DWDM system has a complex networking structure, and the filter types in the network are various. When a system formed by cascading a plurality of filters is used as a channel filter, it is difficult to directly determine the shape of each filter participating in the cascade due to the cascading of the plurality of filters, and therefore, a method for detecting the shape of the filter in the optical transmission network is needed.

In order to solve the above problem, an embodiment of the present application provides a method for detecting a filter shape, where the method includes: determining a plurality of signals with different frequencies provided by the integrated tunable laser ITLA as detection signals; acquiring actual power of the detection signals with different frequencies when the detection signals are received after being transmitted through a target path, wherein the target path is an optical transmission network channel needing to detect the shape of a channel filter; and determining the shape of a channel filter of the target path according to the actual power.

According to the method for detecting the shape of the filter, the optical signal sent by the integrated tunable laser ITLA in the line side optical module is used as the detection signal, the detection signal is transmitted in the optical transmission network channel needing to detect the shape of the channel filter, then the power detected when the detection signal passes through the transmission channel and is received at the receiving end is obtained, and then the power spectrum of the channel filter is obtained according to the power, and the power spectrum can be used as the shape of the channel filter, so that the detection of the shape of the filter in the optical transmission network is realized, and the estimation of the filtering damage of the channel filter can be further realized according to the obtained shape of the filter. In addition, the signal provided by the ITLA is a narrow pulse signal, so that the bandwidth of the detection signal is small, the frequency is relatively concentrated, the obtained frequency corresponds to the power in receiving more accurately, the obtained spectrogram is more accurate, the frequency difference between different detection signals is small, more detection signals are sent in a certain frequency range, the actual power data volume for determining the shape of the channel filter is large, more data can be referred to by the shape of the filter obtained according to the actual power, the accuracy and the reliability are improved, and the whole method only needs to use the existing structure or equipment of the optical transmission network, does not need to additionally add other equipment, and does not need to increase the cost.

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in the examples of the present application, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not constitute any limitation to the specific implementation manner of the present application, and the embodiments may be mutually incorporated and referred to without contradiction.

The following describes the details of the implementation of the method for detecting the filter characteristic of the present embodiment with reference to fig. 2 to 8, and the following is provided only for the convenience of understanding and is not necessary for implementing the present embodiment.

Referring to fig. 2, in some embodiments, a method of detecting a filter shape includes the steps of:

step 101, determining signals with a plurality of different frequencies provided by the integrated tunable laser ITLA as detection signals.

Specifically, in this embodiment, an Integrated Tunable Laser (ITLA) is used to emit a plurality of narrow pulse signals with different frequencies as a detection signal, and the detection signal is transmitted in an optical transport network channel to be detected, so as to realize channel detection.

It is worth mentioning that, because the signal provided by the ITLA is a narrow pulse signal, the bandwidth of the detection signal is small, the frequency is relatively concentrated, the output power of the optical module is mainly concentrated on a single frequency, the obtained frequency corresponds to the power during receiving more accurately, the obtained spectrogram is more accurate, the frequency difference between different detection signals is small, more detection signals are sent in a certain frequency range, the actual power data volume for determining the shape of the channel filter is large, and the shape of the filter obtained according to the actual power can refer to more data, so that the accuracy and the reliability are improved.

More specifically, referring to the DWDM system shown in fig. 1, the controller issues control commands to the ITLA multiple times, and the ITLA receives the control commands and then sends narrow pulse signals of corresponding frequencies according to the information indicating the signal frequency carried in the control commands.

It is worth mentioning that the controller is used for issuing a control command to realize detection, field optical fiber plugging and unplugging operation is not needed, the shape of the channel filter can be obtained on line only by using the existing structure or equipment of the optical transmission network, other equipment is not needed to be additionally added, and the cost is not needed to be increased, so that the service new construction or capacity expansion risk is reduced, and the after-sale operation and maintenance cost is reduced.

It should be noted that the frequency of the sounding reference signal transmitted by the ITLA is determined by the controller, and the frequency of the sounding reference signal and the number of sounding reference signals are not limited in this embodiment. And the detection signal can be sent after the frequency of the ITLA is stable every time, so that the stability of the signal is ensured, and the instability of the signal received by a receiving end caused by the instability of the sent signal is avoided.

In some other embodiments, the frequencies of the probing signals are all located in the interval [ f1-BW/2, f1+ BW/2], where f1 is the center frequency of the otn channel to be detected, and BW is the bandwidth of the otn channel to be detected. And then the detection signal is detected in the frequency supported by the optical transmission network channel, and the frequency range outside the frequency supported by the optical transmission network channel is not detected, so that the detection can be carried out comprehensively, partial data loss is avoided, unnecessary detection can be reduced, and resource waste is avoided.

It will be appreciated that the bandwidth of the optical transport network channel to be detected may be expressed in terms of the channel spacing of the DWDM system in which it is located.

Further, in some embodiments, the frequency of the probe signal may be specifically determined by the following expression:

f = f1-BW/2+ N Δ f or f = f1+ BW/2-N Δ f

Wherein f is the frequency of the probing signal, Δ f is the preset frequency adjustment step, f1 is the center frequency of the optical transport network channel to be detected, BW is the bandwidth of the optical transport network channel to be detected, N = {1,2, \8230;, k }, k = [ BW/Δ f ]. Specifically, the preset frequency adjustment step length may be set according to the precision of the detection result when the filter shape is detected, for example, according to the precision requirement of the filter shape detection, the ITLA frequency adjustment step length is set to 100MHz, and 500 power points may be collected in a channel with a bandwidth of 50GHz to meet the precision requirement of the filter shape detection.

In one example, with Δ f as an adjustment step, increasing the frequency sequentially from f1-BW/2 until stopping after k-th adjustment, where k satisfies f1-BW/2+ (k + 1) × Δ f > f1+ BW/2, that is, after the frequency of the sounding signal is determined by each adjustment, detecting whether the frequency after the next adjustment exceeds f1+ BW/2, and determining the frequency of the sounding signal continuously only if the frequency does not exceed f1+ BW/2.

In one example, Δ f is used as an adjustment step, the frequency is sequentially decreased from f1+ BW/2 until stopping after k adjustment, where k satisfies f1+ BW/2- (k + 1) × Δ f < f1-BW/2, that is, after the frequency of the sounding signal is determined by each adjustment, it is first detected whether the frequency after the next adjustment exceeds f1-BW/2, and the frequency of the sounding signal is determined continuously only if the frequency does not exceed f 1-BW/2.

It should be noted that the above description of the frequency of the probing signal indicates that in some embodiments, the step 101 actually implies a step of determining the frequency of the probing signal.

It should be further noted that, the shape of the channel filter for detecting the optical transmission network channel is generally performed when the optical transmission network is newly built or expanded, and at this time, before step 101, the method further includes configuring the optical module as a service rate and a corresponding modulation code type set for the new building or the expansion, where each channel transmits one wavelength λ, and two ends of each channel correspond to one optical module with a wavelength configured as λ. Of course, in other embodiments, if the optical transport network has a detection requirement in a non-new and non-volume-expansion scenario, the shape of the channel filter may also be detected.

In an example, when a service is newly built or expanded, the DWDM system is newly built or expanded to support a 100G Quadrature Phase Shift Keying (QPSK) (200G 8 Quadrature Amplitude Modulation (QAM)/200G QPSK) service, a system channel interval is 50GHz (62.5 GHz/75 GHz), and a wavelength λ =192.1THz of a channel transmission signal, before performing step 101, a 192.1THz traffic channel optical module needs to be configured as a 100G QPSK (200G 8QAM/200G QPSK) mode, and a central wavelength of the optical module is configured as 192.1THz, where the traffic optical module is an optical module playing a role of transmitting content information.

Further, in order to improve the sending effect of the detection signal and change the relevant setting of the optical module, referring to fig. 3, before step 101, the method further includes:

and step 104, closing the signal modulation function of the optical module in which the ITLA is positioned and/or locking the power of the signal sent by the optical module in which the ITLA is positioned.

Specifically, in this embodiment, the controller issues a control command, and the optical module turns off its signal modulation function according to the received control command, so that the signal modulation is not performed when the probe signal is transmitted, but a simple narrow pulse signal provided by the ITLA, and/or the optical module locks the power of the signal transmitted by itself according to the received control command, so that the narrow pulse signals provided by the ITLA all have the same power.

It should be noted that if the bandwidth of the detection signal is increased, in order to avoid frequency coincidence between the detection signals, the number of the detection signals is reduced, and then the obtained actual power data is reduced, which affects the amount of data available when the final filter shape is determined, and further affects the accuracy and reliability of the filter shape, and the signal modulation function is turned off, which prevents the bandwidth of the signal sent out from being increased due to the modulation of the detection signal. And the power is locked, namely, the power of the detection signal sent by ITLA in the optical module is ensured to be consistent, so that only the frequency variable is ensured in the detection process, the variable control is realized, the interference of inconsistent power of a sending end in the detection process on the detection result is avoided, and the shape of the obtained filter is more accurate finally. Specifically, referring to fig. 4, fig. 4 is a power spectrum at different frequencies of the ITLA after the optical module turns off the modulation signal, and it can be seen that more collected power data are obtained within a certain range, that is, more reference data are obtained.

Further, in some cases, the user may not have a need to detect the shape of the channel filter, and then needs to select whether to perform detection according to the need, specifically, referring to fig. 5, in some embodiments, step 101 further includes the following steps:

step 105, determining whether the optical transport network channel needs to detect the shape of the channel filter according to the actual requirement, if yes, executing step 106, and if no, executing step 107.

And 106, determining the optical transmission network channel as a target path.

Specifically, determining the target path means that the detection of the filter shape is to be performed, i.e., step 101 needs to be performed next.

Step 107, configuring the optical module corresponding to the optical transport network channel normally and entering a service signal transmission mode.

Specifically, the configuration of the optical module is completed according to the prior art, which is not described herein again, and then the optical module and the channel can perform normal service data transceiving, that is, enter a service book signal transmission mode, at this time, the signal modulation function of the optical module is not turned off, and the frequency of the signal is not generally locked.

Step 102, acquiring actual power of the detection signals with different frequencies when the detection signals are received after being transmitted through the target path.

Specifically, in this embodiment, the target path is an optical transmission network channel that needs to detect the shape of the channel filter, and obtains the actual power when received, that is, the probe signal is sent out from one end of the target path and received at the other end, and detects the power of the signal received from the receiving end.

More specifically, both ends of the target path are provided with optical modules, one side of a transmission signal provides a transmission signal by using the ITLA, the other side of the transmission signal receives the signal, the other side of the transmission signal detects the power of the received signal every time the other side of the transmission signal receives the signal, and reports the detected power to the controller for storage and use by the controller.

It should be noted that the actual power uploaded and detected by the optical module at the receiving end should be the actual power detected after the uploaded and received signal is stable, so as to avoid that when the signal is unstable, an actual power with a large error is detected, thereby affecting the determination of the final filter shape.

It should be noted that, if the controller stores the reported power value, for convenience of subsequent use, the frequency of the detection signal corresponding to the power value needs to be stored, or the frequency of the detection signal corresponding to the power value needs to be mapped to the power value.

Considering that the DWDM system fluctuation affects the channel filter shape detection accuracy when detecting the shape of the channel filter on line, therefore, it is necessary to transmit the probe signals with different frequencies for many times, referring to fig. 6, in some embodiments, step 102 is: and acquiring actual power of the detection signals with different frequencies transmitted by a target path for a preset number of times M to obtain M power sets.

Specifically, in the present embodiment, one power set represents a set of actual powers obtained by sequentially transmitting probe signals of different frequencies once through the target path. That is, assuming that the frequency of the probe signal includes { F1, F2, \8230;, fk }, transmitting the probe signal with different frequencies in the target path by traversing the frequency in { F1, F2, \8230;, fk }, each time the scanning is completed, detecting whether the scanning frequency reaches the preset frequency M or not until M times of scanning are completed. Each scan results in a set of k actual powers, which is the set of powers.

In one example, when a jth scan is performed, where j represents the current number of scans, j =1,2, \8230;, M; setting a variable N as a counter for controlling the adjustment times of the ITLA frequency, after the jth scanning is started, firstly setting the ITLA laser frequency as f1-BW/2+ N + delta f, wherein f1 is the central frequency of a channel lambda k, BW is the channel bandwidth of the channel lambda k, and when the jth scanning is started, the ITLA frequency adjustment times N =0, and after the ITLA frequency is adjusted once, N = N +1 until the whole channel scanning is completed. Reporting the power detected by the receiving-end optical module to a controller after the receiving-end optical module of the target path detects that the power is stable every time, storing the power value into a result memory for scanning the nth frequency point for the jth time by the controller, corresponding to the position coordinates (n, j) of the memory, then waiting for the controller to generate an ITLA frequency adjusting command, wherein the command can adjust the ITLA frequency to be f = f1-BW/2+ (n + 1) × delta f, temporarily not sending a command to the ITLA to execute the frequency adjustment, firstly judging whether the frequency f exceeds f1+ BW/2, when the ITLA frequency exceeds f1+ BW/2, considering that one round of scanning is finished, and then judging whether the scanning of the specified times is finished; and when the ITLA frequency does not exceed f1+ BW/2, performing n = n +1 operation on n, then returning to execute f1-BW/2+ n + delta f, sending a detection signal and reporting the power detected by the optical module at the receiving end to the controller, and storing the power value into a result memory for scanning the nth frequency point for the jth time by the controller, wherein the result memory corresponds to the position coordinate (n, j) of the memory. And when the judgment result is that the scanning is finished for the specified times, the detected result is the M power sets, and if the scanning is performed for 10 times, the obtained power sets can be stored in the controller register in a structure shown in the following table:

where j represents the number of scans, i.e. each column of data is the result of one scan, and n represents different frequencies.

And 103, determining the shape of the channel filter of the target path according to the actual power.

The scanned power spectrum is affected by system fluctuations,

specifically, in the present embodiment, each detection signal obtains an actual power, and a plurality of detection signals with different powers obtain a set of actual powers, from which a power spectrum can be obtained approximately, and the power spectrum is a representation of the shape of the filter, i.e. the shape of the channel filter is determined.

It should be noted that after the power spectrum is obtained, a plurality of bandwidths under X-dB, such as 1dB bandwidth, 3dB bandwidth, 6dB bandwidth, and 10dB bandwidth, are further obtained according to the data of the power spectrum, and are also a representation of the result of the shape of the channel filter.

Further, considering that when the shape of the channel filter is detected online, the fluctuation of the DWDM system will affect the accuracy of detecting the shape of the channel filter, and therefore, it is necessary to transmit the probe signals with different frequencies for several times, i.e. step 102 is: when acquiring actual powers of probe signals with different frequencies transmitted through a target path for a preset number of times M to obtain M power sets, referring to fig. 6, step 103 specifically includes the following steps:

and 108, translating each power set to obtain M power spectrums.

Specifically, in the present embodiment, the power set is shifted with the power corresponding to the center frequency of each power spectrum being 0dB as the shift target. The power spectrum is obtained by arranging the power sets according to the frequency of the detection signals corresponding to the power, and the spectrogram is obtained by further drawing data in the power spectrum to a coordinate axis.

And step 109, smoothing the M power spectrums to obtain an actual power spectrum as a result of the shape of the filter.

Specifically, in this embodiment, M powers having the same frequency are averaged, that is, smoothed.

It is worth mentioning that, referring to fig. 7-9, fig. 7 shows the shape of the channel filter after a single scan; fig. 8 shows the shape of the channel filter after 5 scans, and fig. 9 shows the shape of the channel filter after 10 scans. The channel filter power spectrum detected in fig. 7 has approximately 2dB fluctuation, the channel filter power spectrum detected in fig. 8 has approximately 1dB fluctuation, and the channel filter power spectrum detected in fig. 9 has approximately 0.3dB fluctuation; it can be seen that although the system fluctuation has an influence on the detection result of the filter shape, the influence of the system fluctuation band is reduced by increasing the scanning times and adding the smoothing processing step, so that the obtained result is more accurate.

In addition, it should be understood that the above steps of the various methods are divided for clarity, and the implementation may be combined into one step or split into some steps, and the steps are divided into multiple steps, so long as the same logical relationship is included in the protection scope of the present patent; it is within the scope of this patent to add insignificant modifications or introduce insignificant designs to the algorithms or processes, but not to change the core designs of the algorithms and processes.

An embodiment of the present invention further provides a system for detecting a filter shape, with reference to fig. 10, including:

a first determining module 1001, configured to determine a plurality of signals with different frequencies provided by the integrated tunable laser ITLA as detection signals;

an obtaining module 1002, configured to obtain actual power of a probe signal with different frequencies when the probe signal is received after being transmitted through a target path, where the target path is an optical transmission network channel for which a filter shape needs to be detected;

a second determining module 1003, configured to determine a shape of a channel filter of the target path according to the actual power.

It should be understood that the present embodiment is a system embodiment corresponding to an embodiment of the method for detecting a filter shape, and the present embodiment can be implemented in cooperation with an embodiment of the method for detecting a filter shape. The details of the related technologies mentioned in the embodiment of the method for detecting the shape of the filter are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related art details mentioned in the present embodiment can also be applied to the embodiment of the detection method of the filter shape.

It should be noted that, all the modules involved in this embodiment are logic modules, and in practical application, one logic unit may be one physical unit, may also be a part of one physical unit, and may also be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, a unit which is not so closely related to solve the technical problem proposed by the present invention is not introduced in the present embodiment, but this does not indicate that there is no other unit in the present embodiment.

An embodiment of the present application further provides an electronic device, as shown in fig. 11, including: comprises at least one processor 1101; and a memory 1102 communicatively coupled to the at least one processor 1101; the memory 1102 stores instructions executable by the at least one processor 1101 to enable the at least one processor 1101 to perform a method for detecting a filter shape as described in any one of the above method embodiments.

Wherein the memory 1102 and the processor 1101 are coupled by a bus, which may comprise any number of interconnected buses and bridges that interconnect one or more of the various circuits of the processor 1101 and the memory 1102. The bus may also connect various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface provides an interface between the bus and the transceiver. The transceiver may be one element or a plurality of elements, such as a plurality of receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. Data processed by the processor 1101 is transmitted over a wireless medium through an antenna, which receives the data and transmits the data to the processor 1101.

The processor 1101 is responsible for managing the bus and general processing and may also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And the memory 1102 may be used to store data used by the processor 1101 in performing operations.

Embodiments of the present invention also provide a computer-readable storage medium storing a computer program. The computer program realizes an embodiment of the above-described method of detection of filter shape when executed by a processor.

That is, as can be understood by those skilled in the art, all or part of the steps in the method for implementing the embodiments described above may be implemented by a program instructing related hardware, where the program is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, and various media capable of storing program codes.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the present application, and that various changes in form and details may be made therein without departing from the spirit and scope of the present application in practice.

Claims

1. A method for detecting a filter shape, comprising:

determining a plurality of signals with different frequencies provided by the integrated tunable laser ITLA as detection signals;

acquiring actual power of the detection signals with different frequencies when the detection signals are received after being transmitted through a target path, wherein the target path is an optical transmission network channel needing to detect the shape of a channel filter;

and determining the shape of a channel filter of the target path according to the actual power.

2. The method of detecting filter shape of claim 1, wherein prior to determining the signals of several different frequencies provided by the integrated tunable laser ITLA as probing signals, the method further comprises:

and closing the signal modulation function of the optical module in which the ITLA is located and/or locking the power of the signal sent by the optical module in which the ITLA is located.

3. The method for detecting the filter shape according to claim 2, wherein before the turning off the signal modulation function of the optical module in which the ITLA is located and/or locking the power of the signal transmitted by the optical module in which the ITLA is located, the method further comprises:

judging whether the optical transmission network channel needs to detect the shape of the channel filter according to actual requirements;

if yes, determining the optical transmission network channel as the target path;

if not, normally configuring an optical module corresponding to the optical transport network channel and entering a service signal transmission mode.

4. The filter shape detection method according to any one of claims 1-3, wherein the frequencies of the probe signals are all located in an interval [ f1-BW/2, f1+ BW/2], where f1 is the center frequency of the target path and BW is the bandwidth of the target path.

5. The filter shape detection method according to claim 4, wherein the frequency of the probe signal is determined by the following expression:

f = f1-BW/2+ N Δ f or f = f1+ BW/2-N Δ f

Wherein f is the frequency of the detection signal, Δ f is a preset frequency adjustment step, N = {1,2, \8230;, k }, k = [ BW/Δ f ].

6. The method of claim 1, wherein the obtaining actual power of the probe signals with different frequencies when received after transmission through a target path comprises:

and acquiring the actual power of the detection signals with different frequencies transmitted for a preset number of times M through the target path to obtain M power sets, wherein one power set is the set of the actual power obtained by transmitting the detection signals with different frequencies once through the target path in sequence.

7. The method as claimed in claim 6, wherein the determining the shape of the channel filter of the target path according to the actual power comprises:

translating each power set to obtain M power spectrums, wherein the power of the central frequency of each power spectrum is 0dB;

and smoothing the M power spectrums to obtain an actual power spectrum as a result of the shape of the filter.

8. A filter shape detection system, comprising:

the integrated tunable laser ITLA detection device comprises a first determination module, a second determination module and a third determination module, wherein the first determination module is used for determining a plurality of signals with different frequencies provided by the integrated tunable laser ITLA as detection signals;

the acquisition module is used for acquiring actual power when the detection signals with different frequencies are received after being transmitted through a target path, wherein the target path is an optical transmission network channel needing to detect the shape of a filter;

and the second determining module is used for determining the shape of the channel filter of the target path according to the actual power.

9. An electronic device, comprising:

at least one processor; and the number of the first and second groups,

a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform a method of detecting a filter shape according to any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the filter shape detection method of any one of claims 1 to 7.