CN115704956A - Channel attenuation adjusting method and device of wavelength selective switch and electronic equipment - Google Patents
Channel attenuation adjusting method and device of wavelength selective switch and electronic equipment Download PDFInfo
- Publication number
- CN115704956A CN115704956A CN202110886775.3A CN202110886775A CN115704956A CN 115704956 A CN115704956 A CN 115704956A CN 202110886775 A CN202110886775 A CN 202110886775A CN 115704956 A CN115704956 A CN 115704956A
- Authority
- CN
- China
- Prior art keywords
- channel
- attenuation
- parameter
- adjacent
- adjusting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 60
- 238000001228 spectrum Methods 0.000 claims abstract description 67
- 239000012634 fragment Substances 0.000 claims abstract description 39
- 230000003595 spectral effect Effects 0.000 claims description 44
- 238000004590 computer program Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 15
- 230000003287 optical effect Effects 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 7
- 230000002146 bilateral effect Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/61—Coherent receivers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
The embodiment of the invention discloses a method and a device for adjusting channel attenuation of a wavelength selective switch and electronic equipment, wherein the method comprises the following steps: respectively inputting white noise to a first channel of a wavelength selection switch module and a second channel adjacent to the first channel; and adjusting the output spectrum of the white noise according to the additional attenuation parameters to enable the first channel and the second channel to output symmetrical spectrums respectively, wherein the additional attenuation parameters comprise additional attenuation parameters respectively corresponding to adjacent fragments and next adjacent fragments in the first channel and the second channel. The scheme of the embodiment of the invention can carry out linkage adjustment on the added attenuation of the segments between the adjacent channels so as to improve the distortion between the adjacent channels, ensure that the adjacent channels tend to be symmetrical, reduce the filtering damage and improve the punch-through performance of service signals.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for adjusting channel attenuation of a wavelength selective switch, and an electronic device.
Background
At present, in domestic and foreign communication networks, dense Wavelength Division Multiplexing (WDM) is in large-scale commercial use, wherein a Reconfigurable Optical Add/Drop Multiplexer (ROADM) architecture is more and more favored by operators and enterprise customers due to the characteristics of flexible scheduling, large exchange capacity, low time delay, low power consumption and the like, and is widely deployed commercially. The Wavelength Selective Switch (WSS) can realize a flexible grid and support the mixed transmission function of various rate services, and is a mainstream device of a ROADM networking.
When the service signal passes through the ROADM site and the WSS site has an adjacent channel, the existing adjacent channel control action may cause the characteristic distortion of the channel to be tested, so that the channel to be tested generates bilateral asymmetric filtering. As shown in fig. 1, the bilateral asymmetric filtering cannot be compensated by only the attenuation of the wavelength selective switch slice within the channel bandwidth. Therefore, it is necessary to provide a channel attenuation adjustment method for a wavelength selective switch, which can overcome the problem of failure of a coherent receiver clock synchronization algorithm due to bilateral asymmetry filtering generated after multistage WSS filtering cascades of adjacent channels, thereby ensuring reliable receptivity of an optical transceiver after multistage WSS cascades.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
Embodiments of the present invention provide a method and an apparatus for adjusting channel attenuation of a wavelength selective switch, an electronic device, and a computer-readable storage medium, which can perform coordinated adjustment on a fractional additional attenuation between adjacent channels, and effectively improve the punch-through performance of a service signal.
In a first aspect, an embodiment of the present invention provides a method for adjusting channel attenuation of a wavelength selective switch, where the method is applied to a channel attenuation adjusting apparatus, and the method includes:
respectively inputting white noise to a first channel of a wavelength selection switch module and a second channel adjacent to the first channel;
adjusting the output spectrum of the white noise according to additional attenuation parameters to enable the first channel and the second channel to output symmetrical spectrums respectively, wherein the additional attenuation parameters comprise additional attenuation parameters respectively corresponding to adjacent fragments and next adjacent fragments in the first channel and the second channel.
In the embodiment of the present invention, the additional attenuation parameter corresponding to the next adjacent segment in the first channel and the second channel is a first additional attenuation parameter; the additional attenuation parameter corresponding to the adjacent fragment of the first channel is a second additional attenuation parameter, and the additional attenuation parameter corresponding to the adjacent fragment of the second channel is a third additional attenuation parameter.
In the embodiment of the present invention, the second additional attenuation parameter and the third additional attenuation parameter are obtained through the following processes:
acquiring a relative attenuation amount between the first channel and the second channel;
determining a first weight parameter and a second weight parameter according to the relative attenuation amount;
determining the second additional attenuation parameter according to the first weight parameter;
determining the third additional attenuation parameter according to the second weight parameter.
In this embodiment of the present invention, the first weight parameter is a product of the relative attenuation amount and a first weight coefficient, and the second weight parameter is a product of the relative attenuation amount and a second weight coefficient.
In this embodiment of the present invention, the obtaining a relative attenuation amount between the first channel and the second channel includes:
acquiring a first spectrum height corresponding to the central frequency of the first channel and a second spectrum height corresponding to the central frequency of the second channel;
and determining the relative attenuation amount between the first channel and the second channel according to the difference absolute value of the first spectral height and the second spectral height.
In the embodiment of the present invention, before the adjusting the output spectrum of the white noise according to the additional attenuation parameter, the method further includes:
and respectively determining corresponding basic attenuation parameters for each slice in the first channel and the second channel, and pre-adjusting the output spectrum of the white noise according to the basic attenuation parameters so that the flatness of the spectrum output by the first channel in a first interval is smaller than a flatness threshold value, and the flatness of the spectrum output by the second channel in a second interval is smaller than the flatness threshold value.
In the embodiment of the present invention, after the output spectrum of the white noise is pre-adjusted according to the basic attenuation parameter, the method further includes:
acquiring a relative attenuation amount between the first channel and the second channel;
and for the channel with the negative relative attenuation quantity in the first channel and the second channel, carrying out relative attenuation adjustment according to the relative attenuation quantity.
In a second aspect, an embodiment of the present invention provides a method for optimizing channel signal attenuation of a wavelength selective switch, where the method includes:
when a first channel of a wavelength selective switch module and a second channel adjacent to the first channel are respectively introduced with service signals, aiming at adjacent fragments and secondary adjacent fragments in the first channel and the second channel, attenuation amount adjustment is respectively carried out according to corresponding additional attenuation parameters;
wherein the additional attenuation parameter is obtained by the channel attenuation adjusting method of the wavelength selective switch as described above.
In a third aspect, an embodiment of the present invention provides a channel attenuation adjusting apparatus for a wavelength selective switch, including:
an input module for inputting white noise to a first channel of a wavelength selective switch module and a second channel adjacent to the first channel;
an obtaining module, configured to obtain additional attenuation parameters corresponding to adjacent slices and sub-adjacent slices in the first channel and the second channel;
and the adjusting module is used for adjusting the output spectrum of the white noise according to the additional attenuation parameter so as to enable the first channel and the second channel to respectively output symmetrical spectrums.
In the embodiment of the present invention, the obtaining module includes:
a first obtaining unit, configured to obtain a first additional attenuation parameter corresponding to a second adjacent segment in the first channel and the second channel;
a second obtaining unit, configured to obtain a second additional attenuation parameter corresponding to an adjacent segment of the first channel;
a third obtaining unit, configured to obtain a third additional attenuation parameter corresponding to an adjacent segment of the second channel.
In the embodiment of the present invention, the obtaining module further includes: a fourth acquisition unit configured to acquire a relative attenuation amount between the first channel and the second channel;
the second acquisition unit calculates a first weight parameter according to the relative attenuation amount and determines the second additional attenuation parameter; the third acquisition unit calculates a second weight parameter according to the relative attenuation amount, and determines the third additional attenuation parameter.
In this embodiment of the present invention, the fourth obtaining unit further includes:
a first obtaining subunit, configured to obtain a first spectral height corresponding to a center frequency of the first channel and a second spectral height corresponding to a center frequency of the second channel;
and the second obtaining subunit is configured to determine a relative attenuation amount between the first channel and the second channel according to an absolute value of a difference between the first spectral height and the second spectral height.
In the embodiment of the present invention, the obtaining module further includes: a fifth obtaining unit, configured to obtain a basic attenuation parameter corresponding to each slice in the first channel and the second channel.
In the embodiment of the present invention, the adjusting module further includes:
a first adjusting unit for pre-adjusting the output spectrum of the white noise according to the basic attenuation parameter to make it possible to obtain a white noise spectrum
The flatness of the spectrum output by the first channel in a first interval is smaller than a flatness threshold, and the flatness of the spectrum output by the second channel in a second interval is smaller than the flatness threshold;
a second adjustment unit configured to perform relative attenuation adjustment on a channel having a negative relative attenuation amount in the first channel and the second channel according to the relative attenuation amount;
and the third adjusting unit is used for adjusting the output spectrum of the white noise according to the first additional attenuation parameter, the second additional attenuation parameter and the third additional attenuation parameter so as to enable the first channel and the second channel to respectively output symmetrical spectrums.
In a fourth aspect, an embodiment of the present invention provides an electronic device, including: the channel attenuation adjusting method of the wavelength selective switch comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein when the processor executes the computer program, the channel attenuation adjusting method of the wavelength selective switch provided by the embodiment of the invention is realized.
In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the computer program implements the method for adjusting channel attenuation of a wavelength selective switch provided in an embodiment of the present invention.
In the embodiment of the invention, corresponding additional attenuation parameters are respectively determined for adjacent fragments and secondary adjacent fragments in the first channel and the second channel, and the output spectrum of the white noise is adjusted according to the additional attenuation parameters, so that the first channel and the second channel respectively output symmetrical spectrums. The scheme of the embodiment of the invention can effectively carry out optical domain equalization processing on adjacent channels of the wavelength selective switch, and can improve the distortion between the adjacent channels by carrying out linkage adjustment on the added attenuation of the segments between the adjacent channels, so that the adjacent channels tend to be symmetrical, the ROADM filtering damage is reduced, and the punch-through performance of service signals is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic diagram of adjacent channel asymmetric filtering;
fig. 2 is a schematic flow chart of a method for adjusting channel attenuation of a wavelength selective switch according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an implementation of step S3000 in FIG. 2;
fig. 4 is a schematic diagram of an implementation of step S3200 in fig. 3;
FIG. 5 is a schematic diagram of an implementation of step S3210 in FIG. 4;
FIG. 6 is a schematic diagram of another specific implementation of step S2000 in FIG. 2;
fig. 7 is a schematic structural diagram of a channel attenuation adjusting device of a wavelength selective switch according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a channel attenuation adjusting device of a wavelength selective switch according to another embodiment of the present invention;
FIG. 9 is a schematic diagram of a fourth obtaining unit in FIG. 8;
fig. 10 is a schematic structural diagram of a channel attenuation adjusting apparatus of a wavelength selective switch according to another embodiment of the present invention;
FIG. 11 is a schematic diagram of a channel attenuation adjustment process of a wavelength selective switch according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be understood that in the description of the embodiments of the present invention, if there is any description of "first", "second", etc., it is only for the purpose of distinguishing technical features, and it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features. "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, and means that there may be three relationships, for example, a and/or B, and may mean that a exists alone, a and B exist simultaneously, and B exists alone. Wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" and the like, refer to any combination of these items, including any combination of singular or plural items. For example, at least one of a, b, and c may represent: a, b, c, a and b, a and c, b and c or a and b and c, wherein a, b and c can be single or multiple.
In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The wavelength selective switch related to the embodiment of the invention can realize flexible grids and support the function of mixed transmission of various rate services, is a main device of ROADM networking, and is widely applied to WDM transmission networks of various large communication operators. As shown in fig. 1, in an actual network environment, when a service signal passes through an adjacent channel of a WSS site at the same time, a characteristic of a channel to be measured may be distorted, so that the channel to be measured generates bilateral asymmetric filtering, an existing optical channel service may be controlled by the adjacent channel, a passive additional performance cost is generated, and ROADM filtering damage is increased.
In the related art, a method for adjusting channel attenuation of a wavelength selective switch is to solve the problem of performance degradation and the like when a single-channel service passes through a multi-stage WSS. This solution has a number of disadvantages: the attenuation parameters of all the fragments of a single channel can only be adjusted, the attenuation parameters of the corresponding fragments of the adjacent channels cannot be adjusted in a linkage manner, the generation of asymmetric filtering cannot be avoided, and the optical transceiver cannot be reliably received after being cascaded by the multi-stage WSS.
Based on the above, embodiments of the present invention provide a method and an apparatus for adjusting channel attenuation of a wavelength selective switch, an electronic device, and a computer readable storage medium, in which corresponding additional attenuation parameters are respectively determined for adjacent slices and sub-adjacent slices in a first channel and a second channel, and an output spectrum of white noise is adjusted according to the additional attenuation parameters, so that the first channel and the second channel respectively output symmetric spectrums, thereby achieving a purpose of performing linkage adjustment on additional attenuation amounts of slices between adjacent channels.
Referring to fig. 2, fig. 2 shows a flow of a channel attenuation adjusting method of a wavelength selective switch according to an embodiment of the present invention. As shown in fig. 2, the method for adjusting channel attenuation of a wavelength selective switch according to an embodiment of the present invention includes the following steps:
and S1000, respectively inputting white noise to a first channel of the wavelength selection switch module and a second channel adjacent to the first channel.
It should be understood that the first channel and the second channel may each be divided into a corresponding number of wavelength selective switch tiles (WSS Slice) according to their channel bandwidths. Illustratively, as shown in fig. 11 (a), when the channel bandwidths of the first channel and the second channel are both 37.5GHz, the number of slices of the two adjacent channels is six (6 × 6.25 GHz); the adjacent fragments in the first channel and the second channel are adjacent fragments, namely a sixth fragment (Slice 1_ 6) of the first channel and a first fragment (Slice 2_ 1) of the second channel are adjacent fragments; similarly, the fifth Slice (Slice 1_ 5) of the first channel and the second Slice (Slice 2_ 2) of the second channel are next adjacent slices, the first Slice (Slice 1_ 1) of the first channel and the sixth Slice (Slice 2_ 6) of the second channel are edge slices, the second Slice (Slice 1_ 2) of the first channel and the fifth Slice (Slice 2_ 5) of the second channel are next edge slices, and the remaining slices (Slice 1_3 and Slice1_ 4) of the first channel and the slices (Slice 2_3 and Slice2_ 4) of the second channel are center slices.
S2000, respectively determining corresponding basic attenuation parameters for each slice in the first channel and the second channel, and pre-adjusting the output spectrum of the white noise according to the basic attenuation parameters so that the flatness of the spectrum output by the first channel in the first interval is smaller than a flatness threshold value, and the flatness of the spectrum output by the second channel in the second interval is smaller than the flatness threshold value.
It should be understood that the center frequency of the first channel is f1, the center frequency of the second channel is f2, and the baud rate of the service signal is B, which are obtained by the service transceiver module. Illustratively, two transverse frequency scaling lines of the spectrometer are adjusted at the f1-B/2 and f2+ B/2 frequencies, respectively. In this case, the frequencies f 1-B/2-f 1 are the first interval, and f 2-f 2+ B/2 are the second interval. Preferably, as shown in fig. 11 (b), the attenuation a of the edge slice of the first channel and the second channel is 0; adjusting the magnitude of the attenuation B of the sub-edge segments of the first channel and the second channel to make the spectral height of the lowest point of the frequency in the first interval consistent with the spectral height at the f1-B/2 position, and simultaneously make the spectral height of the lowest point of the frequency in the second interval consistent with the spectral height at the f2+ B/2 position; as shown in fig. 11 (c), the attenuation c of the center slices of the first channel and the second channel is adjusted to make the spectrum output by the first channel tend to be flat in the first interval, the spectrum output by the second channel tends to be flat in the second interval, and the channel flatness in the first interval and the second interval is ensured to be less than the flatness threshold; preferably, the flatness threshold value is 0.4dB.
Then, the attenuation amounts of Slice1_4, slice1_5 and Slice1_6 in the bandwidth of the first channel are symmetrically adjusted by taking the central frequency f1 of the first channel as a boundary, namely the attenuation amounts of Slice1_4, slice1_5 and Slice1_6 are respectively set to be the same as Slice1_3, slice1_2 and Slice1_ 1; and symmetrically adjusting the attenuation quantities of Slice2_3, slice2_2 and Slice2_1 in the bandwidth of the second channel by taking the center frequency f2 of the second channel as a boundary, namely setting the attenuation quantities of Slice2_3, slice2_2 and Slice2_1 to be the same as Slice2_4, slice2_5 and Slice2_6 respectively. As shown in fig. 11 (d), the basic attenuation parameters corresponding to the first channel and the second channel are [ a b c b a, a b c b a ].
And S3000, adjusting the output spectrum of the white noise according to the additional attenuation parameters to enable the first channel and the second channel to output symmetrical spectrums respectively, wherein the additional attenuation parameters comprise additional attenuation parameters respectively corresponding to adjacent fragments and next adjacent fragments in the first channel and the second channel.
In order to avoid bilateral asymmetric filtering generated by the first channel and the second channel and improve distortion quantity between adjacent channels, attenuation parameters of adjacent fragments and sub-adjacent fragments in the first channel and the second channel are adjusted in a linkage mode, and therefore the first channel and the second channel can output symmetric spectrums respectively. Therefore, output spectrum adjustment needs to be performed on adjacent slices and next adjacent slices according to the additional attenuation parameters so as to perform linkage shaping on the attenuation parameters of the adjacent areas of the first channel and the second channel.
Referring to fig. 3, step S3000 can be implemented by the following steps:
s3100, the additional attenuation parameter corresponding to the second adjacent slice in the first channel and the second channel is the first additional attenuation parameter.
And determining the additional attenuation parameter corresponding to the second adjacent fragment in the first channel and the second channel as a first additional attenuation parameter so as to ensure that the spectral height of the second adjacent fragment of the first channel is consistent with the spectral height of the fragment taking f1 as a boundary symmetric position, and the spectral height of the second adjacent fragment of the second channel is consistent with the spectral height of the fragment taking f2 as a boundary symmetric position. As shown in fig. 11 (e), the additional attenuation parameters of Slice1_5 and Slice2_2 are d1.
S3200, where the additional attenuation parameter corresponding to the adjacent slice of the first channel is a second additional attenuation parameter, and the additional attenuation parameter corresponding to the adjacent slice of the second channel is a third additional attenuation parameter.
And determining the additional attenuation parameter corresponding to the adjacent slices in the first channel and the second channel as a first additional attenuation parameter so as to ensure that the spectral height of the adjacent slices of the first channel is consistent with the spectral height of the slice taking f1 as a boundary symmetric position, and the spectral height of the adjacent slices of the second channel is consistent with the spectral height of the slice taking f2 as a boundary symmetric position. As shown in fig. 11 (e), the additional attenuation parameters of Slice1_6 and Slice2_1 are d2, i.e. the values of the second additional attenuation parameter and the third additional attenuation parameter are both d2.
Referring to fig. 4, step S3200 may be implemented by:
s3210, obtaining a relative attenuation between the first channel and the second channel.
It should be understood that when there is a relative attenuation amount between the first channel and the second channel, in order to improve the distortion amount between the first channel and the second channel and avoid the situation that the relative attenuation amount causes bilateral asymmetric filtering of the adjacent channels of the wavelength selective switch, it is necessary to perform coordinated adjustment on additional attenuation parameters of adjacent slices of the adjacent channels. Therefore, it is necessary to obtain the relative attenuation between the first channel and the second channel, and adjust the third additional attenuation parameter according to the relative attenuation.
Referring to fig. 5, step S3210 may be implemented by:
s3211, acquiring a first spectral height corresponding to a center frequency of a first channel and a second spectral height corresponding to a center frequency of a second channel;
it should be understood that a first spectral height h1 corresponding to the center frequency of the first channel is the center spectral height of the first channel, and a second spectral height h2 corresponding to the center frequency of the second channel is the center spectral height of the second channel, and the relative attenuation between the first channel and the second channel can be determined by obtaining h1 and h 2.
S3212, determining a relative attenuation amount between the first channel and the second channel according to an absolute value of a difference between the first spectral height and the second spectral height.
After the first spectral height h1 and the second spectral height h2 are obtained, the relative attenuation between the first channel and the second channel is calculated by calculating the absolute value of h1-h 2. Illustratively, when h1-h2>0, i.e., the second channel has a negative relative attenuation amount compared to the first channel, the first channel is a relatively high channel and the second channel is a relatively low channel; when h1-h2<0, namely the first channel has negative relative attenuation compared with the second channel, the second channel is a relatively high channel, and the first channel is a relatively low channel; let the relative attenuation between the first channel and the second channel, i.e., the absolute values of h1-h2, be Δ Att.
S3220, determining a first weight parameter and a second weight parameter according to the relative attenuation amount.
In order to reduce the distortion between the first channel and the second channel, the additional attenuation parameters of the adjacent slices of the relatively high channel need to be reduced in a linkage manner, and the additional attenuation parameters of the adjacent slices of the relatively low channel need to be increased in a linkage manner, so that the effect of adjusting the attenuation parameters of the adjacent channels between the first channel and the second channel is achieved. Namely, the channel with negative relative attenuation quantity in the first channel and the second channel is subjected to gain adjustment on the additional attenuation parameter of the adjacent slice; and carrying out impairment adjustment on the additional attenuation parameters of the adjacent slices of the channel with the positive relative attenuation quantity in the first channel and the second channel. Illustratively, when the first channel has a negative relative attenuation compared to the second channel, and the relative attenuation Δ Att =3dB, the first weight coefficient is the relative low-channel weight coefficient m =0.1, and the second weight coefficient is the relative high-channel weight coefficient n = -0.06. It is understood that the first weight parameter and the second weight parameter are only related to the relative attenuation amount of the first channel and the second channel, and do not change with the change of the channel interval of the two adjacent channels.
S3230, determining a second additional attenuation parameter according to the first weight parameter.
Specifically, the first weight parameter is a product of the relative attenuation and the first weight coefficient. Illustratively, the second additional attenuation parameter is d2+ m Δ Att when there is a negative relative attenuation in the first channel compared to the second channel.
And S3240, determining a third additional attenuation parameter according to the second weight parameter.
Specifically, the second weight parameter is a product of the relative attenuation amount and a second weight coefficient. Illustratively, the third additional attenuation parameter is d2+ n Δ Att when there is a negative relative attenuation in the first channel compared to the second channel.
Referring to fig. 6, step S2000 can be implemented by the following steps:
s2100, for each slice in the first channel and the second channel, determining a corresponding basic attenuation parameter, respectively.
The attenuation a of the edge segment, the attenuation b of the sub-edge segment, and the attenuation c of the center segment of the first and second channel are determined. As shown in fig. 11 (d), the basic attenuation parameters corresponding to the first channel and the second channel are [ a b c b a, a b c b a ].
S2200, pre-adjusting the output spectrum of the white noise according to the basic attenuation parameter.
And pre-adjusting the output spectrum of the white noise according to the basic attenuation parameters so that the flatness of the spectrum output by the first channel in a first interval is smaller than a flatness threshold value, and the flatness of the spectrum output by the second channel in a second interval is smaller than the flatness threshold value. Illustratively, the flatness threshold value is 0.4dB.
S2300, acquiring a relative attenuation amount between the first channel and the second channel.
When there is relative attenuation between the first channel and the second channel, filtering damage is caused to the adjacent channel, which may increase distortion of the output spectrum of white noise and affect the service feedthrough performance. Therefore, it is necessary to obtain a relative attenuation between the first channel and the second channel. It can be understood that the obtaining of the relative attenuation Δ Att is consistent with the process of step S3210, and the specific implementation manner of the obtaining of the relative attenuation Δ Att may be referred to the related description of step S3210, which is not described herein again.
S2400, for the channel having the negative relative attenuation amount among the first channel and the second channel, performs relative attenuation adjustment according to the relative attenuation amount.
In order to avoid filter damage to adjacent channels due to relative attenuation and reduce distortion of an output spectrum of white noise, it is necessary to perform gain adjustment of a basic attenuation parameter for a channel having a negative relative attenuation. After the relative attenuation adjustment, the basic attenuation parameters corresponding to the first channel and the second channel are [ a + Δ Att b + Δ Att c + Δ Att b + Δ Att a + Δ Att, a b c b ].
The channel attenuation adjusting method of the wavelength selective switch is further described below with reference to examples, but the method is not limited to the technical solutions of the embodiments of the present invention.
The invention takes a method and a system for improving the long-distance transmission performance of 100G/B100G quasi-Nyquist WDM in a multi-level Flex ROADM system as an example, and aims at the long-distance transmission system, and is characterized in that: the frequency interval between system channels is close to the service optical baud rate, namely quasi-Nyquist WDM transmission, such as 100GPM-QPSK and 200G PM-16QAM service signals with the baud rate of about 34GHz transmitted in a channel interval of 37.5GHz, or 200G PM-8QAM service signals with the baud rate of about 45GHz transmitted in a channel interval of 50 GHz.
Example one
When the bandwidths of the first channel and the second channel are the same, the channel bandwidth is 37.5GHz, and there is no relative attenuation (Δ Att = 0) in the first channel and the second channel, at this time, the attenuation parameter adjusting step of the wavelength selective switch slice (12 × 6.25 GHz) of the first channel and the second channel includes:
white noise is input into a single wavelength selection switch unit, and the center frequency f1 of the first channel and the center frequency f2 of the second channel are acquired. The output end of the wavelength selection switch unit is connected to a spectrum analyzer, wherein the bandwidth of a channel of the wavelength selection switch is set to be 37.5GHz, 6 6.25GHz slices corresponding to each channel are provided, and the total of 12 6.25GHz slices of two adjacent channels are provided;
acquiring a baud rate B from a service transceiver module, and adjusting two transverse frequency calibration lines of the spectrometer, wherein the two transverse frequency calibration lines are respectively arranged at the frequencies of f1-B/2 and f2+ B/2;
adjusting attenuation of Slice1_1 in the first channel and Slice2_6 in the second channel to be a =0, adjusting attenuation B of Slice1_2 in the first channel to make the spectral height at the lowest point of the frequency in the interval of f 1-B/2-f 1 close to the spectral height at f1-B/2, and similarly adjusting attenuation B of Slice2_5 in the second channel to make the spectral height at the lowest point of the frequency in the interval of f 2-f 2+ B/2 close to the spectral height at f2+ B/2;
adjusting the attenuation c of the center Slice1_3 of the first channel to enable the spectrum in the interval of the frequencies f 1-B/2-f 1 to tend to be flat, and adjusting the attenuation c of the center Slice2_4 of the second channel to enable the spectrum in the interval of the frequencies f 2-f 2+ B/2 to tend to be flat and ensure that the channel flatness of the interval is not more than 0.4dB;
symmetrically adjusting the attenuation amounts of Slice1_4, slice1_5 and Slice1_6 in the bandwidth of the first channel by taking the central frequency f1 of the first channel as a boundary, namely setting the attenuation amounts of Slice1_4, slice1_5 and Slice1_6 to be respectively the same as Slice1_3, slice1_2 and Slice1_ 1; and symmetrically adjusting the attenuation quantities of the Slice2_3, the Slice2_2 and the Slice2_1 in the bandwidth of the second channel by taking the center frequency f2 of the second channel as a boundary, namely setting the attenuation quantities of the Slice2_3, the Slice2_2 and the Slice2_1 to be the same as the attenuation quantities of the Slice2_4, the Slice2_5 and the Slice2_6 respectively. At this time, obtaining basic attenuation parameters [ a b c b a, a b c b a ] corresponding to the first channel and the second channel;
additional attenuation parameters are determined. Adjusting a first additional attenuation parameter d1 corresponding to the next adjacent Slice (Slice 1_5, slice2_ 2) in the first channel and the second channel, a second additional attenuation parameter d2 corresponding to the adjacent Slice1_6 in the first channel, and a third additional attenuation parameter d2 corresponding to the adjacent Slice2_1 in the second channel, so as to respectively make the spectrum in the first channel symmetrical and the spectrum in the second channel symmetrical. As shown in fig. 11 (e), the attenuation amounts of the 12 wavelength selective switch slices in the adjacent channels at this time are [ a b c b + d1 a + d2, a + d2 b + d1 c b a ].
Preferably, since there is a small difference between individual wavelength selective switch devices, N wavelength selective switch modules are selected, and preferably, N is not less than 3. And repeating the steps for the N selected modules, sequentially obtaining the attenuation adjusting parameters of each segment of each wavelength selective switch module, averaging the N attenuation values of each segment, and finally taking the average value as the attenuation parameter of the corresponding segment in the channel bandwidth of the wavelength selective switch.
Example two
When the bandwidth of the first channel and the second channel is the same, the channel bandwidth is 37.5GHz, and the first channel has relative attenuation of delta Att compared with the second channel. At this time, the attenuation parameter adjustment step of the wavelength selective switch slices (12 × 6.25 GHz) of the first channel and the second channel comprises;
consistent with the steps of the first embodiment, the basic attenuation parameters and the additional attenuation parameters of 12 wavelength selective switch slices of adjacent channels are obtained as [ a b c b + d1 a + d2, a + d2 b + d1 c b a ];
adjusting two transverse frequency calibration lines of the spectrometer, aligning the two transverse frequency calibration lines with frequency spectrum lines where the center frequencies of the first channel and the second channel are located respectively, and then reading out the relative difference of the two transverse frequency calibration lines, namely the relative attenuation delta Att of the two adjacent channels; and adjusting the basic attenuation parameter, the second additional attenuation parameter and the third additional attenuation parameter of the wavelength selection switch fragment to obtain the attenuation parameters of 12 wavelength selection switch fragments as [ a + delta Att b + delta Att c + delta Att b + d1+ delta Att a + d2+ delta Att +0.1 delta Att, a + d2t-0.06 delta Att b + d1 c a ].
EXAMPLE III
When the bandwidths of the first channel and the second channel are different, wherein the bandwidth of the first channel is 37.5GHz, the bandwidth of the second channel is 50GHz, and the second channel has relative attenuation of delta Att compared with the first channel. At this time, the attenuation parameter adjustment steps of the wavelength selective switch slice (6 × 6.25 GHz) of the first channel and the wavelength selective switch slice (8 × 6.25 GHz) of the second channel include;
consistent with the steps of the first embodiment, the basic attenuation parameters and the additional attenuation parameters of 14 wavelength selective switch slices in the adjacent channels are obtained as [ a b c b + d1 a + d2, a + d2 b + d1 c c c b a ];
adjusting two transverse frequency calibration lines of the spectrometer, aligning the two transverse frequency calibration lines with frequency spectrum lines where the center frequencies of the first channel and the second channel are located respectively, and then reading out the relative difference of the two transverse frequency calibration lines, namely the relative attenuation delta Att of the two adjacent channels; adjusting the basic attenuation parameter, the second additional attenuation parameter and the third additional attenuation parameter of the wavelength selective switch fragment to obtain the attenuation parameters of the 14 wavelength selective switch fragments [ a b c b + d1 a + d2-0.06 delta Att, a + d2+0.1 delta Att + delta Att b + d1+ delta Att c + delta Att b + delta Att a ].
It can be understood that, in different scenarios, when the service signal passes through the ROADM site, the channel shaping parameters of the wavelength selective switch unit can be obtained. When the system establishes a service, the adjacent channel shaping parameters can be configured in wavelength selective switch units at the penetration points of Optical multiplexer, optical demultiplexer and ROADM in a transmission link according to the service type through a Network management or an Automatic Switched Optical Network (ASON), and the shaping of a service spectrum is realized at each level of wavelength selective switch units, so that the effect of improving the penetration performance of service signals is achieved.
The channel attenuation adjusting method of the wavelength selective switch provided by the embodiment of the invention is suitable for linkage adjustment of the additional attenuation of the sub-chip between the adjacent channels, reduces the damage of the filter channel of the wavelength selective switch, and enables the adjacent channels to be symmetrical.
The embodiment of the invention provides a flow of a channel signal attenuation optimization method of a wavelength selective switch. Specifically, the method for optimizing the channel signal attenuation of the wavelength selective switch in the embodiment of the present invention includes the following steps:
when the first channel of the wavelength selection switch module and the second channel adjacent to the first channel are respectively introduced with service signals, aiming at the adjacent fragments and the next adjacent fragments in the first channel and the second channel, the attenuation amount is respectively adjusted according to the corresponding additional attenuation parameters.
Wherein the additional attenuation parameter is obtained by the channel attenuation adjustment method of the wavelength selective switch as described above.
The channel signal attenuation optimization method of the wavelength selective switch provided by the embodiment of the invention is suitable for linkage adjustment of the additional attenuation of the fragments between adjacent channels, and effectively improves the punch-through performance of service signals.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a channel attenuation adjusting apparatus of a wavelength selective switch according to an embodiment of the present invention, and the following modules in the channel attenuation adjusting apparatus of the wavelength selective switch are involved in the whole process of the channel attenuation adjusting method of the wavelength selective switch according to the embodiment of the present invention: an input module 100, an acquisition module 200 and an adjustment module 300.
The input module 100 is configured to input white noise to a first channel of the wavelength selective switch module and a second channel adjacent to the first channel.
An obtaining module 200, configured to obtain additional attenuation parameters corresponding to adjacent slices and sub-adjacent slices in the first channel and the second channel.
And an adjusting module 300, configured to adjust an output spectrum of the white noise according to the additional attenuation parameter, so that the first channel and the second channel output symmetric spectrums respectively.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a channel attenuation adjusting apparatus of a wavelength selective switch according to another embodiment of the present invention, wherein the obtaining module 200 includes the following units:
a first obtaining unit 210, configured to obtain first additional attenuation parameters corresponding to sub-adjacent tiles in the first channel and the second channel.
A second obtaining unit 220, configured to obtain second additional attenuation parameters corresponding to adjacent segments of the first channel.
A third obtaining unit 230, configured to obtain a third additional attenuation parameter corresponding to an adjacent segment of the second channel.
A fourth obtaining unit 240, configured to obtain a relative attenuation amount between the first channel and the second channel.
A fifth obtaining unit 250, configured to obtain a basic attenuation parameter corresponding to each slice in the first channel and the second channel.
Referring to fig. 9, fig. 9 is a schematic structural diagram of the fourth obtaining unit 240 in fig. 8, and the fourth obtaining unit 240 includes the following sub-units:
the first obtaining subunit 241 is configured to obtain a first spectral height corresponding to a center frequency of the first channel and a second spectral height corresponding to a center frequency of the second channel.
A second obtaining subunit 242, configured to determine a relative attenuation amount between the first channel and the second channel according to an absolute value of a difference between the first spectral height and the second spectral height.
Referring to fig. 10, fig. 10 is a schematic structural diagram of a channel attenuation adjusting apparatus of a wavelength selective switch according to another embodiment of the present invention, and the adjusting module 300 includes the following units:
the first adjusting unit 310 is configured to pre-adjust the output spectrum of the white noise according to the basic attenuation parameter, so that the flatness of the spectrum output by the first channel in the first interval is smaller than the flatness threshold, and the flatness of the spectrum output by the second channel in the second interval is smaller than the flatness threshold.
A second adjusting unit 320, configured to perform relative attenuation adjustment on a channel having a negative relative attenuation amount in the first channel and the second channel according to the relative attenuation amount.
A third adjusting unit 330, configured to adjust the output spectrum of the white noise according to the first additional attenuation parameter, the second additional attenuation parameter, and the third additional attenuation parameter, so that the first channel and the second channel respectively output symmetric spectrums.
It should be noted that, for the contents of information interaction, execution process, and the like among the modules, units, and sub-units of the apparatus, specific functions and technical effects thereof are based on the same concept as those of the method embodiment of the present invention, and specific reference may be made to the method embodiment section, which is not described herein again.
Fig. 12 illustrates an electronic device 500 provided by an embodiment of the invention. The electronic device 500 includes, but is not limited to:
a memory 501 for storing programs;
and a processor 502 for executing the program stored in the memory 501, wherein when the processor 502 executes the program stored in the memory 501, the processor 502 is configured to execute the channel attenuation adjusting method of the wavelength selective switch.
The processor 502 and the memory 501 may be connected by a bus or other means.
The memory 501, which is a non-transitory computer-readable storage medium, may be used to store a non-transitory software program and a non-transitory computer-executable program, such as the channel attenuation adjustment method of the wavelength selective switch described in any embodiment of the present invention. The processor 502 implements the channel attenuation adjustment method of the wavelength selective switch described above by running a non-transitory software program and instructions stored in the memory 501.
The memory 501 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store a channel attenuation adjustment method that implements the wavelength selective switch described above. Further, the memory 501 may include high speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 501 may optionally include memory located remotely from the processor 502, which may be connected to the processor 502 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
Non-transitory software programs and instructions required to implement the channel attenuation adjustment method of the wavelength selective switch described above are stored in the memory 501, and when executed by the one or more processors 502, perform the channel attenuation adjustment method of the wavelength selective switch provided by any embodiment of the present invention.
The embodiment of the invention also provides a storage medium, which stores computer-executable instructions, and the computer-executable instructions are used for executing the channel attenuation adjusting method of the wavelength selective switch.
In an embodiment, the storage medium stores computer-executable instructions, which when executed by one or more control processors 502, for example, by one of the processors 502 in the electronic device 500, may cause the one or more processors 502 to perform the method for adjusting channel attenuation of a wavelength selective switch according to any embodiment of the present invention.
The above described embodiments are merely illustrative, wherein elements illustrated as separate components may or may not be physically separate, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
It will be understood by those of ordinary skill in the art that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, or suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and those skilled in the art will appreciate that the present invention is not limited thereto. Under the shared conditions, various equivalent modifications or substitutions can be made, and the equivalent modifications or substitutions are included in the scope of the invention defined by the claims.
Claims (16)
1. A channel attenuation adjusting method of a wavelength selective switch is applied to a channel attenuation adjusting device and comprises the following steps:
respectively inputting white noise to a first channel of a wavelength selection switch module and a second channel adjacent to the first channel;
adjusting the output spectrum of the white noise according to additional attenuation parameters to enable the first channel and the second channel to output symmetrical spectrums respectively, wherein the additional attenuation parameters comprise additional attenuation parameters respectively corresponding to adjacent fragments and next adjacent fragments in the first channel and the second channel.
2. The method of claim 1, wherein the additional attenuation parameter corresponding to the next adjacent tile in the first channel and the second channel is a first additional attenuation parameter; the additional attenuation parameter corresponding to the adjacent fragment of the first channel is a second additional attenuation parameter, and the additional attenuation parameter corresponding to the adjacent fragment of the second channel is a third additional attenuation parameter.
3. The method of claim 2, wherein the second additional attenuation parameter and the third additional attenuation parameter are obtained by:
acquiring a relative attenuation amount between the first channel and the second channel;
determining a first weight parameter and a second weight parameter according to the relative attenuation amount;
determining the second additional attenuation parameter according to the first weight parameter;
determining the third additional attenuation parameter according to the second weight parameter.
4. The method of claim 3, wherein the first weight parameter is a product of the relative attenuation and a first weight coefficient, and wherein the second weight parameter is a product of the relative attenuation and a second weight coefficient.
5. The method of claim 3, wherein the obtaining the relative attenuation between the first channel and the second channel comprises:
acquiring a first spectral height corresponding to the central frequency of the first channel and a second spectral height corresponding to the central frequency of the second channel;
and determining the relative attenuation amount between the first channel and the second channel according to the difference absolute value of the first spectral height and the second spectral height.
6. The method of claim 1, further comprising, prior to said adjusting the output spectrum of the white noise according to the additional attenuation parameter:
and respectively determining corresponding basic attenuation parameters for each slice in the first channel and the second channel, and pre-adjusting the output spectrum of the white noise according to the basic attenuation parameters so that the flatness of the spectrum output by the first channel in a first interval is smaller than a flatness threshold value, and the flatness of the spectrum output by the second channel in a second interval is smaller than the flatness threshold value.
7. The method of claim 6, further comprising, after pre-adjusting the output spectrum of the white noise according to the base attenuation parameter:
acquiring a relative attenuation amount between the first channel and the second channel;
for a channel having a negative relative attenuation amount among the first channel and the second channel, relative attenuation adjustment is performed in accordance with the relative attenuation amount.
8. A method for optimizing the attenuation of channel signal of wavelength selective switch,
when a first channel of a wavelength selective switch module and a second channel adjacent to the first channel are respectively introduced with service signals, aiming at adjacent fragments and secondary adjacent fragments in the first channel and the second channel, attenuation amount adjustment is respectively carried out according to corresponding additional attenuation parameters;
wherein the additional attenuation parameter is obtained by the method of any one of claims 1 to 7.
9. A channel attenuation adjusting apparatus for a wavelength selective switch, comprising:
an input module for inputting white noise to a first channel of a wavelength selective switch module and a second channel adjacent to the first channel;
an obtaining module, configured to obtain additional attenuation parameters corresponding to adjacent slices and sub-adjacent slices in the first channel and the second channel;
and the adjusting module is used for adjusting the output spectrum of the white noise according to the additional attenuation parameter so as to enable the first channel and the second channel to respectively output symmetrical spectrums.
10. The apparatus of claim 9, wherein the obtaining module comprises:
a first obtaining unit, configured to obtain a first additional attenuation parameter corresponding to a second adjacent segment in the first channel and the second channel;
a second obtaining unit, configured to obtain a second additional attenuation parameter corresponding to an adjacent segment of the first channel;
a third obtaining unit, configured to obtain a third additional attenuation parameter corresponding to an adjacent segment of the second channel.
11. The apparatus of claim 10, wherein the obtaining module further comprises: a fourth acquisition unit configured to acquire a relative attenuation amount between the first channel and the second channel;
the second acquisition unit calculates a first weight parameter according to the relative attenuation amount and determines the second additional attenuation parameter; the third acquisition unit calculates a second weight parameter according to the relative attenuation amount, and determines the third additional attenuation parameter.
12. The apparatus of claim 11, wherein the fourth obtaining unit further comprises:
a first obtaining subunit, configured to obtain a first spectral height corresponding to a center frequency of the first channel and a second spectral height corresponding to a center frequency of the second channel;
and the second obtaining subunit is configured to determine a relative attenuation amount between the first channel and the second channel according to an absolute value of a difference between the first spectral height and the second spectral height.
13. The apparatus of claim 9, wherein the obtaining module further comprises: a fifth obtaining unit, configured to obtain a basic attenuation parameter corresponding to each slice in the first channel and the second channel.
14. The apparatus of claim 13, wherein the adjustment module further comprises:
the first adjusting unit is used for pre-adjusting the output spectrum of the white noise according to the basic attenuation parameter so that the flatness of the spectrum output by the first channel in a first interval is smaller than a flatness threshold value, and the flatness of the spectrum output by the second channel in a second interval is smaller than the flatness threshold value;
a second adjustment unit configured to perform relative attenuation adjustment on a channel having a negative relative attenuation amount in the first channel and the second channel according to the relative attenuation amount;
and the third adjusting unit is used for adjusting the output spectrum of the white noise according to the first additional attenuation parameter, the second additional attenuation parameter and the third additional attenuation parameter so as to enable the first channel and the second channel to respectively output symmetrical spectrums.
15. An electronic device, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of adjusting channel attenuation of a wavelength selective switch according to any one of claims 1 to 7 when executing the computer program.
16. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, implements the channel attenuation adjustment method of a wavelength selective switch according to any one of claims 1 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110886775.3A CN115704956A (en) | 2021-08-03 | 2021-08-03 | Channel attenuation adjusting method and device of wavelength selective switch and electronic equipment |
| PCT/CN2022/100902 WO2023011036A1 (en) | 2021-08-03 | 2022-06-23 | Channel attenuation adjustment method and apparatus for wavelength selective switch, and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110886775.3A CN115704956A (en) | 2021-08-03 | 2021-08-03 | Channel attenuation adjusting method and device of wavelength selective switch and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115704956A true CN115704956A (en) | 2023-02-17 |
Family
ID=85154249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110886775.3A Pending CN115704956A (en) | 2021-08-03 | 2021-08-03 | Channel attenuation adjusting method and device of wavelength selective switch and electronic equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115704956A (en) |
| WO (1) | WO2023011036A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2319202B1 (en) * | 2008-07-28 | 2016-06-22 | Telefonaktiebolaget LM Ericsson (publ) | Channel power control in an optical network node |
| JP5505220B2 (en) * | 2010-09-14 | 2014-05-28 | 富士通株式会社 | Optical transmission apparatus and optical attenuation control method |
| US8867917B2 (en) * | 2011-06-27 | 2014-10-21 | Finisar Corporation | Optical wavelength selective switch calibration system |
| CN102281110B (en) * | 2011-07-29 | 2014-04-16 | 华为技术有限公司 | Methods and devices for regulating optical power |
| WO2012126414A2 (en) * | 2012-05-02 | 2012-09-27 | 华为技术有限公司 | Method, system and node device for monitoring optical performance of wavelength channel |
| CN110120839B (en) * | 2018-02-07 | 2021-11-02 | 中兴通讯股份有限公司 | Method and device for controlling WSS channel attenuation, storage medium and processor |
-
2021
- 2021-08-03 CN CN202110886775.3A patent/CN115704956A/en active Pending
-
2022
- 2022-06-23 WO PCT/CN2022/100902 patent/WO2023011036A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023011036A1 (en) | 2023-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9768902B2 (en) | Control systems and methods for spectrally overlapped flexible grid spectrum using a control bandwidth | |
| US7113700B2 (en) | Optical transmission system | |
| EP2571184B1 (en) | Allocation of spectral capacity in a wavelength-division multiplexing optical network | |
| US20100239260A1 (en) | Optical transmission apparatus, optical communication method, and optical communication system | |
| US8600242B2 (en) | Power optimization of optical receivers | |
| US10530516B2 (en) | Method and system for controlling channel replacement and spectral occupancy | |
| US9525481B2 (en) | Method and apparatus for calculating nonlinear transmission impairment of optical fiber link | |
| US9813160B2 (en) | Method of equalizing an optical transmission signal | |
| US9923632B2 (en) | Optical transmission apparatus, optical transmission system, and method of controlling output of optical signal | |
| CN115296732B (en) | Optical transmission system and configuration parameter optimization method for optical transmission system | |
| WO2019154308A1 (en) | Method and device for controlling wss channel attenuation, storage medium, processor | |
| Pan et al. | OSNR measurement comparison in systems with ROADM filtering for flexible grid networks | |
| CN115704956A (en) | Channel attenuation adjusting method and device of wavelength selective switch and electronic equipment | |
| WO2022199277A1 (en) | Power compensation method and apparatus, and communication system | |
| Rossi et al. | Does ageing of margins become more attractive in WDM networks with 64 GBaud transponders and regenerators? | |
| Zami et al. | How efficient can routing of individual 37.5 GHz-spaced 100 Gb/s 33 GBaud carriers be in WDM mesh core networks? | |
| EP3780427A1 (en) | Optical transmission apparatus, optical communication system and optical communication method | |
| WO2020195123A1 (en) | Method for transmitting data and for optical transceiver | |
| Rottondi et al. | On the benefits of elastic transponders in optical metro networks | |
| CN112995797A (en) | OTN service management method, device, network equipment and readable storage medium | |
| CN112583489A (en) | Automatic method and device for optical network power control and storage medium | |
| US20210013965A1 (en) | Submarine optical communication control device, control method, and non-transitory computer-readable medium | |
| CN117411555A (en) | Signal flatness adjusting method and device and electronic equipment | |
| Zami et al. | Is mixing 50 GHz-spaced 32 GBaud channels and 75GHz-spaced 64 GBaud ones useful in a WDM elastic network? | |
| CN112787747B (en) | Method and device for controlling power regulation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |