CN114362820A - WDM wavelength channel identification method, device, equipment and readable storage medium - Google Patents
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Abstract
The application relates to a WDM wavelength channel identification method, a device, equipment and a readable storage medium, relating to the technical field of communication light path testing and comprising the steps of obtaining a two-dimensional array of wavelength channel branches, wherein the two-dimensional array comprises a wavelength array and an insertion loss array; obtaining a sum insertion loss value according to the minimum insertion loss value in the insertion loss array and a preset insertion loss value; acquiring a first wavelength value corresponding to a first insertion loss value adjacent to the insertion loss value and a second wavelength value corresponding to a second insertion loss value from a wavelength array, calculating to obtain a channel central wavelength value and a bandwidth value corresponding to a preset insertion loss value, determining an initial WDM type of a wavelength channel branch, and acquiring a channel nominal central wavelength value with the minimum difference value with the channel central wavelength value; and finally, identifying the actual WDM type of the wavelength channel branch circuit based on the channel center wavelength value, the channel nominal center wavelength value and the bandwidth upper limit value of the initial WDM type. The method and the device can effectively identify the type of the wavelength channel branch and improve the identification efficiency.
Description
Technical Field
The present application relates to the field of communication optical path testing technologies, and in particular, to a method, an apparatus, a device, and a readable storage medium for identifying a WDM wavelength channel.
Background
The 5G forward transmission network uses three optical wavelength division multiplexing devices, namely LWDM (LAN WDM, fine wavelength division multiplexing), MWDM (Dense WDM ), CWDM (Coarse WDM, sparse WDM) and the like, so that the function of transmitting multi-path optical wavelength signals in the same optical fiber can be realized, and the network construction cost is reduced. In the test of a WDM (Wavelength Division Multiplexing) device, no matter which method is adopted, a two-dimensional data table of one channel, i.e., insertion loss-Wavelength data, also called an insertion loss spectrum of a Wavelength channel, is finally obtained, but since it is considered that one WDM needs to test a plurality of Wavelength channel branch ports (see the λ c1 branch, the λ ci branch, and the λ cn branch shown in fig. 1, for a single WDM device, the pass band width specification values of all Wavelength channel branches in the WDM device are the same, but for a hybrid device, the pass band width specification values of different Wavelength channel branches in the WDM device are not necessarily the same), a three-dimensional array of insertion loss, Wavelength, and branch port can be obtained. Therefore, analysis results of parameters such as insertion loss, center wavelength, channel bandwidth, adjacent isolation, non-adjacent isolation and the like of a single wavelength channel branch can be obtained by analyzing the insertion loss spectrum data of each wavelength channel branch.
However, when data analysis is performed, for a single WDM device class, since the device class is known, some parameter settings required by the analysis process are determined; however, for a hybrid WDM device like LWDM + CWDM class, there are both LWDM branch (i.e. λ c1 branch) and CWDM branch (i.e. λ ci +1 branch) in the branch port of the wavelength channel, as shown in fig. 2, if the test data of the wavelength channel does not include the class of the wavelength channel branch, it is necessary to make sure whether the branch is analyzed according to the parameter setting of LWDM or CWDM when analyzing the data.
In the related art, when analyzing data, the following two methods are generally adopted to determine whether the branch is analyzed according to the parameter setting of LWDM or CWDM: the first is that the category information of the wavelength channel branch is added into the test data every time a wavelength channel branch is tested during the test, and the analysis is carried out according to the category information of the branch during the data analysis; the second method is to perform trial analysis, i.e. manually determine which type the wavelength channel branch belongs to according to the general shape of the insertion loss spectrum, and then perform data analysis according to the corresponding type.
For the first method, a procedure is added in the test process, that is, category information of wavelength channel branches needs to be added, but the method cannot be realized because some test systems or some test occasions do not have the opportunity of adding wavelength channel branch type information to testers; for the second method, each wavelength channel branch must be manually judged, which obviously has a problem in efficiency and brings inconvenience to automatic data analysis.
Disclosure of Invention
The application provides a WDM wavelength channel identification method, a device, equipment and a readable storage medium, which are used for solving the problems that wavelength channel branches of WDM cannot be effectively identified and the identification efficiency is low in the related technology.
In a first aspect, a WDM wavelength channel identification method is provided, which includes the following steps:
acquiring a two-dimensional array of a certain wavelength channel branch, wherein the two-dimensional array comprises a wavelength array and an insertion loss array, and elements in the wavelength array and elements in the insertion loss array have a one-to-one correspondence relationship;
acquiring a minimum insertion loss value in the insertion loss array, and calculating according to the minimum insertion loss value and a preset insertion loss value to obtain a sum insertion loss value;
acquiring a first wavelength value corresponding to the first insertion loss value adjacent to the insertion loss value and a second wavelength value corresponding to the second insertion loss value from the wavelength array;
calculating to obtain a channel center wavelength value and a bandwidth value corresponding to the preset insertion loss value based on the first wavelength value and the second wavelength value;
determining an initial WDM type of the wavelength channel branch based on the preset insertion loss value and the bandwidth value, and acquiring a channel nominal center wavelength value with the minimum difference value with the channel center wavelength value from a nominal center wavelength array of the initial WDM type;
identifying an actual WDM type for the wavelength-channel branch based on the channel center wavelength value, the channel nominal center wavelength value, and the initial WDM type's bandwidth cap value.
In some embodiments, said identifying an actual WDM type for the wavelength-channel branch based on the channel center wavelength value, the channel nominal center wavelength value, and the upper bandwidth limit value for the initial WDM type comprises:
judging whether the central wavelength value of the channel is at lambda1o±XmaxIn the range of/2, where λ1oIs the value of the nominal center wavelength of the channel, XmaxAn upper bandwidth limit of the initial WDM type;
if yes, taking the initial WDM type as an actual WDM type of the wavelength channel branch;
if not, outputting that the wavelength channel branch does not belong to any one of the LWDM type, the MWDM type and the CWDM type.
In some embodiments, the obtaining, from the wavelength array, a first wavelength value corresponding to the first insertion loss value adjacent to the insertion loss value and a second wavelength value corresponding to the second insertion loss value includes:
acquiring a first index value corresponding to the first insertion loss value adjacent to the insertion loss value and a second index value corresponding to the second insertion loss value from the insertion loss array;
and acquiring a first wavelength value corresponding to the first index value and a second wavelength value corresponding to the second index value from the wavelength array according to the corresponding relation between the elements in the wavelength array and the elements in the insertion loss array.
In some embodiments, the calculating, based on the first wavelength value and the second wavelength value, a channel center wavelength value and a bandwidth value corresponding to the preset insertion loss value includes:
calculating an average value between the first wavelength value and the second wavelength value to obtain a channel center wavelength value;
and calculating a difference value between the first wavelength value and the second wavelength value, and taking an absolute value of the difference value as a bandwidth value corresponding to the preset insertion loss value.
In some embodiments, said determining an initial WDM type for the wavelength-channel branch based on the preset insertion loss value and the bandwidth value comprises:
respectively determining a first bandwidth limit value range of the LWDM type, a second bandwidth limit value range of the MWDM type and a third bandwidth limit value range of the CWDM type corresponding to the preset insertion loss value;
detecting whether the bandwidth value is within the first bandwidth limit range or the second bandwidth limit range or the third bandwidth limit range;
when the bandwidth value is in the first bandwidth limit value range, the initial WDM type of the wavelength channel branch is LWDM type;
when the bandwidth value is within the second bandwidth limit range, the initial WDM type of the wavelength channel branch is an MWDM type;
and when the bandwidth value is within the third bandwidth limit range, the initial WDM type of the wavelength channel branch is a CWDM type.
In some embodiments, after the step of identifying the actual WDM type of the wavelength-channel branch based on the channel center wavelength value, the channel nominal center wavelength value, and the upper bandwidth limit value of the initial WDM type, further comprises:
counting the actual WDM type of each wavelength channel branch in the WDM device to obtain the WDM category number of the WDM device;
judging whether the WDM category number is equal to or greater than 2;
if yes, the WDM device is a LWDM + CWDM hybrid WDM device;
if not, the WDM device is the WDM device corresponding to the actual WDM type.
In some embodiments, the predetermined insertion loss value is 3 dB.
In a second aspect, there is provided a WDM wavelength channel identification apparatus comprising:
the device comprises a first obtaining unit, a second obtaining unit and a control unit, wherein the first obtaining unit is used for obtaining a two-dimensional array of a certain wavelength channel branch, the two-dimensional array comprises a wavelength array and an insertion loss array, and elements in the wavelength array and elements in the insertion loss array have one-to-one correspondence;
the first calculation unit is used for acquiring a minimum insertion loss value in the insertion loss array and calculating a sum insertion loss value according to the minimum insertion loss value and a preset insertion loss value;
a second obtaining unit configured to obtain, from the wavelength array, a first wavelength value corresponding to the first insertion loss value adjacent to the insertion loss value and a second wavelength value corresponding to the second insertion loss value;
a second calculating unit, configured to calculate, based on the first wavelength value and the second wavelength value, a channel center wavelength value and a bandwidth value corresponding to the preset insertion loss value;
a first determining unit, configured to determine an initial WDM type of the wavelength channel branch based on the preset insertion loss value and the bandwidth value, and obtain a channel nominal center wavelength value with a smallest difference from the channel center wavelength value in a nominal center wavelength array of the initial WDM type;
a second determination unit for identifying an actual WDM type for the wavelength-channel branch based on the channel center wavelength value, the channel nominal center wavelength value, and the upper bandwidth limit value for the initial WDM type.
In a third aspect, there is provided a WDM wavelength channel identification apparatus comprising: the WDM wavelength channel identification device comprises a memory and a processor, wherein at least one instruction is stored in the memory and loaded and executed by the processor to realize the WDM wavelength channel identification method.
In a fourth aspect, a computer-readable storage medium is provided, which stores a computer program that, when executed by a processor, implements the aforementioned WDM wavelength channel identification method.
The beneficial effect that technical scheme that this application provided brought includes: the method can effectively identify the wavelength channel branch type of the WDM, and improves the identification efficiency.
The application provides a WDM wavelength channel identification method, a device, equipment and a readable storage medium, which comprises the steps of obtaining a two-dimensional array of a certain wavelength channel branch, wherein the two-dimensional array comprises a wavelength array and an insertion loss array, and elements in the wavelength array and elements in the insertion loss array have a one-to-one correspondence relationship; acquiring a minimum insertion loss value in the insertion loss array, and calculating according to the minimum insertion loss value and a preset insertion loss value to obtain a sum insertion loss value; acquiring a first wavelength value corresponding to the first insertion loss value adjacent to the insertion loss value and a second wavelength value corresponding to the second insertion loss value from the wavelength array; calculating to obtain a channel center wavelength value and a bandwidth value corresponding to the preset insertion loss value based on the first wavelength value and the second wavelength value; determining an initial WDM type of the wavelength channel branch based on the preset insertion loss value and the bandwidth value, and acquiring a channel nominal center wavelength value with the minimum difference value with the channel center wavelength value from a nominal center wavelength array of the initial WDM type; identifying an actual WDM type for the wavelength-channel branch based on the channel center wavelength value, the channel nominal center wavelength value, and the initial WDM type's bandwidth cap value. Through the method and the device, the actual central wavelength corresponding to the wavelength channel branch can be automatically identified from the insertion loss spectrum of the WDM wavelength channel branch, the initial WDM type and the corresponding nominal central wavelength of the wavelength channel branch are judged by combining the shape attribute of the passband in the insertion loss spectrum, and the actual WDM type corresponding to the wavelength channel branch is accurately identified, so that data analysis can be carried out based on the actual WDM type, the addition and manual judgment of the category information of the wavelength channel branch are not required, and the identification efficiency of the wavelength channel branch is effectively improved.
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In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art single wavelength division multiplexer;
FIG. 2 is a schematic diagram of a prior art hybrid wavelength division multiplexer;
fig. 3 is a schematic flowchart of a WDM wavelength channel identification method according to an embodiment of the present application;
fig. 4 is a schematic flowchart of a WDM wavelength channel identification method according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a WDM wavelength channel identification apparatus according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a WDM wavelength channel identification apparatus according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a WDM wavelength channel identification method, a device, equipment and a readable storage medium, which can solve the problems in the related art.
Referring to fig. 3 and 4, an embodiment of the present application provides a WDM wavelength channel identification method, including the following steps:
step S10: acquiring a two-dimensional array of a certain wavelength channel branch, wherein the two-dimensional array comprises a wavelength array and an insertion loss array, and elements in the wavelength array and elements in the insertion loss array have a one-to-one correspondence relationship;
exemplarily, in the embodiment of the present application, each wavelength channel branch may be identified simultaneously, or each wavelength channel branch may be identified separately, and this embodiment takes the identification of each wavelength channel branch as an example: three-dimensional number of wavelength channel branches 1 from test textIn the group, a two-dimensional array (W) corresponding to the wavelength channel branch 1 is obtained1，I1)，W1Is a wavelength array, I1Is an insertion loss array, and the wavelength array W1Element in (1) and insertion loss array I1Have a one-to-one correspondence.
Step S20: acquiring a minimum insertion loss value in the insertion loss array, and calculating according to the minimum insertion loss value and a preset insertion loss value to obtain a sum insertion loss value; wherein, the preset insertion loss value L' is preferably 3 dB;
exemplarily, in the embodiment of the present application, I from step S101And searching and obtaining the minimum insertion loss value L (the unit of the insertion loss value is dB), calculating the sum value (namely L + L ') of the minimum insertion loss value L and the preset insertion loss value L', and further determining the wavelength value for calculating the central wavelength of the channel according to the sum value.
Step S30: acquiring a first wavelength value corresponding to the first insertion loss value adjacent to the insertion loss value and a second wavelength value corresponding to the second insertion loss value from the wavelength array;
further, the obtaining a first wavelength value corresponding to the first insertion loss value adjacent to the insertion loss value and a second wavelength value corresponding to the second insertion loss value from the wavelength array specifically includes the following steps:
acquiring a first index value corresponding to the first insertion loss value adjacent to the insertion loss value and a second index value corresponding to the second insertion loss value from the insertion loss array;
and acquiring a first wavelength value corresponding to the first index value and a second wavelength value corresponding to the second index value from the wavelength array according to the corresponding relation between the elements in the wavelength array and the elements in the insertion loss array.
Exemplarily, in the embodiment of the present application, taking the default insertion loss value L 'equal to 3dB as an example, the sum of the minimum insertion loss value L and the default insertion loss value L' is L +3, so that the insertion loss array I is1Two points adjacent to L +3 (i.e. the left adjacent point and the right adjacent point of L + 3) are searched for, and the index values corresponding to the two points are output: x is the number of1(i.e. of the first insertion loss value corresponding to the left neighbouring pointFirst index value) and x2(i.e., a second index value of a second insertion loss value corresponding to the right neighbor); then according to the first index value x1And a second index value x2Respectively from wavelength array W1To find out the first index value x1Corresponding first wavelength value w1And a second index value x2Corresponding second wavelength value w2。
Step S40: calculating to obtain a channel center wavelength value and a bandwidth value corresponding to the preset insertion loss value based on the first wavelength value and the second wavelength value;
further, the calculating, based on the first wavelength value and the second wavelength value, a channel center wavelength value and a bandwidth value corresponding to the preset insertion loss value includes:
calculating an average value between the first wavelength value and the second wavelength value to obtain a channel center wavelength value;
and calculating a difference value between the first wavelength value and the second wavelength value, and taking an absolute value of the difference value as a bandwidth value corresponding to the preset insertion loss value.
Exemplarily, in the embodiment of the present application, the first wavelength value w is calculated1And a second wavelength value w2The average value of the wavelength values is obtained, and the channel center wavelength value lambda of the wavelength channel branch 1 can be obtained1c(ii) a And calculate | w1-w2And | is an absolute value, which is a bandwidth value X corresponding to the preset insertion loss value of the wavelength channel branch 1 being 3 dB.
Step S50: determining an initial WDM type of the wavelength channel branch based on the preset insertion loss value and the bandwidth value, and acquiring a channel nominal center wavelength value with the minimum difference value with the channel center wavelength value from a nominal center wavelength array of the initial WDM type;
further, the determining the initial WDM type of the wavelength channel branch based on the preset insertion loss value and the bandwidth value specifically includes the following steps:
respectively determining a first bandwidth limit value range of the LWDM type, a second bandwidth limit value range of the MWDM type and a third bandwidth limit value range of the CWDM type corresponding to the preset insertion loss value;
detecting whether the bandwidth value is within the first bandwidth limit range or the second bandwidth limit range or the third bandwidth limit range;
when the bandwidth value is in the first bandwidth limit value range, the initial WDM type of the wavelength channel branch is LWDM type;
when the bandwidth value is within the second bandwidth limit range, the initial WDM type of the wavelength channel branch is an MWDM type;
and when the bandwidth value is within the third bandwidth limit range, the initial WDM type of the wavelength channel branch is a CWDM type.
Exemplarily, in the embodiment of the present application, for the same insertion loss value, the bandwidth limit ranges corresponding to different types of WDM are also different (see table 1 specifically), so that it can be determined which WDM type the bandwidth value X is located within the 3dB bandwidth limit range according to the size of the bandwidth value X in step S40, and further preliminarily identify the initial WDM type corresponding to the wavelength channel branch 1, for example, X is located in [ X [L-min，XL-max]Within the range, it can be preliminarily determined that the initial WDM type of the wavelength channel branch 1 is LWDM, and the upper limit value of the bandwidth corresponding to the LWDM type is XL-max。
TABLE 1 Bandwidth limit ranges for 3dB for different WDM types
| Of the WDM type | Lower limit value X of bandwidth corresponding to 3dBmin | Lower limit value X of bandwidth corresponding to 3dBmax |
| LWDM | XL-min | XL-max |
| MWDM | XM-min | XM-max |
| CWDM | XC-min | XC-max |
The nominal central wavelength arrays of the WDM types corresponding to the different wavelength channel branches are also different, and in this embodiment, the nominal central wavelength arrays of all the branches corresponding to the initial WDM type are screened from the two-dimensional arrays of the wavelength grids of the three WDM types, where the wavelength grids of the three WDM types are specifically shown in table 2.
TABLE 2 wavelength grid of the three WDM types
Taking the initial WDM type of the wavelength channel branch 1 as LWDM as an example, the nominal central wavelength array corresponding to the wavelength channel branch 1 is screened from the nominal central wavelength arrays of all the branches of the LWDM type, and the channel central wavelength value λ is matched from the nominal central wavelength array1cNominal central wavelength value lambda of the channel with the smallest difference between them1oI.e. the nominal central wavelength value λ of the channel1oIs a value of wavelength λ corresponding to the center of the channel1cThe closest wavelength value.
Step S60: identifying an actual WDM type for the wavelength-channel branch based on the channel center wavelength value, the channel nominal center wavelength value, and the initial WDM type's bandwidth cap value.
Further, said identifying an actual WDM type for the wavelength-channel branch based on the channel center wavelength value, the channel nominal center wavelength value, and the upper bandwidth limit value for the initial WDM type comprises:
judging whether the central wavelength value of the channel is at lambda1o±XmaxIn the range of/2, where λ1oIs the value of the nominal center wavelength of the channel, XmaxAn upper bandwidth limit of the initial WDM type;
if yes, taking the initial WDM type as an actual WDM type of the wavelength channel branch;
if not, outputting that the wavelength channel branch does not belong to any one of the LWDM type, the MWDM type and the CWDM type.
Exemplarily, in the embodiment of the present application, the initial WDM type of the wavelength channel branch 1 is LWDM type, and the upper limit of the bandwidth of the initial WDM type is XL-maxFor example, since the channel has a nominal center wavelength value λ1oThe result of the processing is determined only according to the bandwidth attribute corresponding to 3dB, so that the channel center wavelength λ needs to be further determined1cWhether or not at λ1o±XL-maxIn/2 range, if it is, the actual WDM type of the wavelength-channel branch 1 can be determined to be LWDM type, and the nominal center wavelength corresponding to the wavelength-channel branch 1 is λ1oOtherwise, it indicates that the result of determining that the initial WDM type is the LWDM type in step S50 is an erroneous determination, and actually the wavelength channel branch 1 does not belong to any one of the LWDM type, the MWDM type, and the CWDM type.
Further, after the step of identifying an actual WDM type for the wavelength-channel branch based on the channel center wavelength value, the channel nominal center wavelength value, and the initial WDM type upper bandwidth limit value, the method further comprises:
counting the actual WDM type of each wavelength channel branch in the WDM device to obtain the WDM category number of the WDM device;
judging whether the WDM category number is equal to or greater than 2;
if yes, the WDM device is a LWDM + CWDM hybrid WDM device;
if not, the WDM device is the WDM device corresponding to the actual WDM type.
Exemplarily, in the embodiments of the present application, the WDM type of the whole device is identified: reading the data of other wavelength channel branches from the test text, repeating the steps from S10 to S60 to identify the type of each wavelength channel branch until the identification of all the wavelength channel branch types is completed, so that the actual WDM type of each wavelength channel branch and the corresponding nominal center wavelength value can be obtained, the category number of the actual WDM type of all the wavelength channel branches is counted, and the category of the WDM device is determined according to the category number of the WDM type. Specifically, if the number of the WDM types is only 1, the WDM device is the type corresponding to the actual WDM type given in step S60, for example, the actual WDM types of all the wavelength channel branches are LWDM types, that is, the WDM type is only LWDM type, and then the WDM device is an LWDM wavelength division multiplexer; if there are more than two types of WDM types, for example, if the WDM type of a part of wavelength channel branches in a certain WDM device is LWDM type, and the WDM type of another part of wavelength channel branches is CWDM type, the WDM device is a hybrid WDM device of LWDM + CWDM, and there is no hybrid WDM device in other combination form because the current 5G forward application only supports hybrid devices in LWDM + CWDM form.
Therefore, according to the method and the device, the actual central wavelength corresponding to the wavelength channel branch can be automatically identified from the insertion loss spectrum of the WDM wavelength channel branch, the initial WDM type and the corresponding nominal central wavelength of the wavelength channel branch are judged by combining the shape attribute of the passband in the insertion loss spectrum, and the actual WDM type and the actual nominal central wavelength corresponding to the wavelength channel branch are accurately identified, so that data analysis can be carried out based on the actual WDM type, the addition and manual judgment of the category information of the wavelength channel branch are not needed, and the identification efficiency of the wavelength channel branch is effectively improved.
Referring to fig. 5, an embodiment of the present application further provides a WDM wavelength channel identification apparatus, including:
the device comprises a first obtaining unit, a second obtaining unit and a control unit, wherein the first obtaining unit is used for obtaining a two-dimensional array of a certain wavelength channel branch, the two-dimensional array comprises a wavelength array and an insertion loss array, and elements in the wavelength array and elements in the insertion loss array have one-to-one correspondence;
the first calculation unit is used for acquiring a minimum insertion loss value in the insertion loss array and calculating a sum insertion loss value according to the minimum insertion loss value and a preset insertion loss value;
a second obtaining unit configured to obtain, from the wavelength array, a first wavelength value corresponding to the first insertion loss value adjacent to the insertion loss value and a second wavelength value corresponding to the second insertion loss value;
a second calculating unit, configured to calculate, based on the first wavelength value and the second wavelength value, a channel center wavelength value and a bandwidth value corresponding to the preset insertion loss value;
a first determining unit, configured to determine an initial WDM type of the wavelength channel branch based on the preset insertion loss value and the bandwidth value, and obtain a channel nominal center wavelength value with a smallest difference from the channel center wavelength value in a nominal center wavelength array of the initial WDM type;
a second determination unit for identifying an actual WDM type for the wavelength-channel branch based on the channel center wavelength value, the channel nominal center wavelength value, and the upper bandwidth limit value for the initial WDM type.
Through the method and the device, the actual central wavelength corresponding to the wavelength channel branch can be automatically identified from the insertion loss spectrum of the WDM wavelength channel branch, the initial WDM type and the corresponding nominal central wavelength of the wavelength channel branch are judged by combining the shape attribute of the passband in the insertion loss spectrum, and the actual WDM type and the actual nominal central wavelength corresponding to the wavelength channel branch are accurately identified, so that data analysis can be carried out based on the actual WDM type, the addition and manual judgment of the category information of the wavelength channel branch are not needed, and the identification efficiency of the wavelength channel branch is effectively improved.
Further, in an embodiment of the present application, the second determining unit is specifically configured to:
judging whether the channel center wavelength value is atAt λ1o±XmaxIn the range of/2, where λ1oIs the value of the nominal center wavelength of the channel, XmaxAn upper bandwidth limit of the initial WDM type;
if yes, taking the initial WDM type as an actual WDM type of the wavelength channel branch;
if not, outputting that the wavelength channel branch does not belong to any one of the LWDM type, the MWDM type and the CWDM type.
Furthermore, in this embodiment of the present application, the second obtaining unit is specifically configured to:
acquiring a first index value corresponding to the first insertion loss value adjacent to the insertion loss value and a second index value corresponding to the second insertion loss value from the insertion loss array;
and acquiring a first wavelength value corresponding to the first index value and a second wavelength value corresponding to the second index value from the wavelength array according to the corresponding relation between the elements in the wavelength array and the elements in the insertion loss array.
Furthermore, in this embodiment of the present application, the second calculating unit is specifically configured to:
calculating an average value between the first wavelength value and the second wavelength value to obtain a channel center wavelength value;
and calculating a difference value between the first wavelength value and the second wavelength value, and taking an absolute value of the difference value as a bandwidth value corresponding to the preset insertion loss value.
Further, in an embodiment of the present application, the first determining unit is specifically configured to:
respectively determining a first bandwidth limit value range of the LWDM type, a second bandwidth limit value range of the MWDM type and a third bandwidth limit value range of the CWDM type corresponding to the preset insertion loss value;
detecting whether the bandwidth value is within the first bandwidth limit range or the second bandwidth limit range or the third bandwidth limit range;
when the bandwidth value is in the first bandwidth limit value range, the initial WDM type of the wavelength channel branch is LWDM type;
when the bandwidth value is within the second bandwidth limit range, the initial WDM type of the wavelength channel branch is an MWDM type;
and when the bandwidth value is within the third bandwidth limit range, the initial WDM type of the wavelength channel branch is a CWDM type.
Further, in an embodiment of the present application, the second determining unit is further configured to:
counting the actual WDM type of each wavelength channel branch in the WDM device to obtain the WDM category number of the WDM device;
judging whether the WDM category number is equal to or greater than 2;
if yes, the WDM device is a LWDM + CWDM hybrid WDM device;
if not, the WDM device is the WDM device corresponding to the actual WDM type.
Furthermore, in the embodiment of the present application, the predetermined insertion loss value is 3 dB.
It should be noted that, as is clear to those skilled in the art, for convenience and brevity of description, the specific working processes of the apparatus and each unit described above may refer to the corresponding processes in the foregoing WDM wavelength channel identification method embodiment, and are not described herein again.
The apparatus provided by the above embodiment may be implemented in the form of a computer program that can be run on a WDM wavelength channel identification device as shown in fig. 6.
An embodiment of the present application further provides a WDM wavelength channel identification apparatus, including: the WDM wavelength channel identification method comprises a memory, a processor and a network interface which are connected through a system bus, wherein at least one instruction is stored in the memory, and the at least one instruction is loaded and executed by the processor so as to realize all or part of the steps of the WDM wavelength channel identification method.
The network interface is used for performing network communication, such as sending distributed tasks. Those skilled in the art will appreciate that the architecture shown in fig. 6 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
The Processor may be a CPU, other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor being the control center of the computer device and the various interfaces and lines connecting the various parts of the overall computer device.
The memory may be used to store computer programs and/or modules, and the processor may implement various functions of the computer device by executing or executing the computer programs and/or modules stored in the memory, as well as by invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a video playing function, an image playing function, etc.), and the like; the storage data area may store data (such as video data, image data, etc.) created according to the use of the cellular phone, etc. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
Embodiments of the present application further provide a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the computer program implements all or part of the steps of the foregoing WDM wavelength channel identification method.
The embodiments of the present application may implement all or part of the foregoing processes, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of the foregoing methods. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U-disk, removable hard disk, magnetic disk, optical disk, computer memory, Read-Only memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, in accordance with legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunications signals.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, server, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A WDM wavelength channel identification method is characterized by comprising the following steps:
acquiring a two-dimensional array of a certain wavelength channel branch, wherein the two-dimensional array comprises a wavelength array and an insertion loss array, and elements in the wavelength array and elements in the insertion loss array have a one-to-one correspondence relationship;
acquiring a minimum insertion loss value in the insertion loss array, and calculating according to the minimum insertion loss value and a preset insertion loss value to obtain a sum insertion loss value;
acquiring a first wavelength value corresponding to the first insertion loss value adjacent to the insertion loss value and a second wavelength value corresponding to the second insertion loss value from the wavelength array;
calculating to obtain a channel center wavelength value and a bandwidth value corresponding to the preset insertion loss value based on the first wavelength value and the second wavelength value;
determining an initial WDM type of the wavelength channel branch based on the preset insertion loss value and the bandwidth value, and acquiring a channel nominal center wavelength value with the minimum difference value with the channel center wavelength value from a nominal center wavelength array of the initial WDM type;
identifying an actual WDM type for the wavelength-channel branch based on the channel center wavelength value, the channel nominal center wavelength value, and the initial WDM type's bandwidth cap value.
2. A WDM wavelength channel identification method according to claim 1, wherein said identifying an actual WDM type for said wavelength channel branch based on said channel center wavelength value, said channel nominal center wavelength value, and an upper bandwidth limit value for said initial WDM type comprises:
judging whether the central wavelength value of the channel is at lambda1o±XmaxIn the range of/2, where λ1oIs the value of the nominal center wavelength of the channel, XmaxAn upper bandwidth limit of the initial WDM type;
if yes, taking the initial WDM type as an actual WDM type of the wavelength channel branch;
if not, outputting that the wavelength channel branch does not belong to any one of the LWDM type, the MWDM type and the CWDM type.
3. A WDM wavelength channel identification method according to claim 1, wherein said deriving from said wavelength array a first wavelength value corresponding to said first insertion loss value adjacent to said insertion loss value and a second wavelength value corresponding to a second insertion loss value comprises:
acquiring a first index value corresponding to the first insertion loss value adjacent to the insertion loss value and a second index value corresponding to the second insertion loss value from the insertion loss array;
and acquiring a first wavelength value corresponding to the first index value and a second wavelength value corresponding to the second index value from the wavelength array according to the corresponding relation between the elements in the wavelength array and the elements in the insertion loss array.
4. A WDM wavelength channel identification method according to claim 1, wherein said calculating a channel center wavelength value and a bandwidth value corresponding to said preset insertion loss value based on said first wavelength value and said second wavelength value comprises:
calculating an average value between the first wavelength value and the second wavelength value to obtain a channel center wavelength value;
and calculating a difference value between the first wavelength value and the second wavelength value, and taking an absolute value of the difference value as a bandwidth value corresponding to the preset insertion loss value.
5. A WDM wavelength channel identification method according to claim 1, wherein said determining an initial WDM type for said wavelength channel branch based on said preset insertion loss value and said bandwidth value comprises:
respectively determining a first bandwidth limit value range of the LWDM type, a second bandwidth limit value range of the MWDM type and a third bandwidth limit value range of the CWDM type corresponding to the preset insertion loss value;
detecting whether the bandwidth value is within the first bandwidth limit range or the second bandwidth limit range or the third bandwidth limit range;
when the bandwidth value is in the first bandwidth limit value range, the initial WDM type of the wavelength channel branch is LWDM type;
when the bandwidth value is within the second bandwidth limit range, the initial WDM type of the wavelength channel branch is an MWDM type;
and when the bandwidth value is within the third bandwidth limit range, the initial WDM type of the wavelength channel branch is a CWDM type.
6. A WDM wavelength channel identification method according to claim 1, further comprising, after said step of identifying an actual WDM type for said wavelength channel branch based on said channel center wavelength value, said channel nominal center wavelength value, and said initial WDM type's bandwidth upper limit value:
counting the actual WDM type of each wavelength channel branch in the WDM device to obtain the WDM category number of the WDM device;
judging whether the WDM category number is equal to or greater than 2;
if yes, the WDM device is a LWDM + CWDM hybrid WDM device;
if not, the WDM device is the WDM device corresponding to the actual WDM type.
7. A WDM wavelength channel identification method according to claim 1, wherein: the preset insertion loss value is 3 dB.
8. A WDM wavelength channel identification apparatus comprising:
the device comprises a first obtaining unit, a second obtaining unit and a control unit, wherein the first obtaining unit is used for obtaining a two-dimensional array of a certain wavelength channel branch, the two-dimensional array comprises a wavelength array and an insertion loss array, and elements in the wavelength array and elements in the insertion loss array have one-to-one correspondence;
the first calculation unit is used for acquiring a minimum insertion loss value in the insertion loss array and calculating a sum insertion loss value according to the minimum insertion loss value and a preset insertion loss value;
a second obtaining unit configured to obtain, from the wavelength array, a first wavelength value corresponding to the first insertion loss value adjacent to the insertion loss value and a second wavelength value corresponding to the second insertion loss value;
a second calculating unit, configured to calculate, based on the first wavelength value and the second wavelength value, a channel center wavelength value and a bandwidth value corresponding to the preset insertion loss value;
a first determining unit, configured to determine an initial WDM type of the wavelength channel branch based on the preset insertion loss value and the bandwidth value, and obtain a channel nominal center wavelength value with a smallest difference from the channel center wavelength value in a nominal center wavelength array of the initial WDM type;
a second determination unit for identifying an actual WDM type for the wavelength-channel branch based on the channel center wavelength value, the channel nominal center wavelength value, and the upper bandwidth limit value for the initial WDM type.
9. A WDM wavelength channel identification apparatus comprising: a memory and a processor, the memory having stored therein at least one instruction, the at least one instruction being loaded and executed by the processor to implement the WDM wavelength channel identification method of any of claims 1-7.
10. A computer-readable storage medium characterized by: the computer storage medium stores a computer program which, when executed by a processor, implements the WDM wavelength channel identification method of any one of claims 1 to 7.
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