CN102594442B - A kind of erasing of wavelength tag and renovation process and device - Google Patents
A kind of erasing of wavelength tag and renovation process and device Download PDFInfo
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- CN102594442B CN102594442B CN201210045879.2A CN201210045879A CN102594442B CN 102594442 B CN102594442 B CN 102594442B CN 201210045879 A CN201210045879 A CN 201210045879A CN 102594442 B CN102594442 B CN 102594442B
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Abstract
The invention discloses a kind of erasing of wavelength tag and renovation process, its method includes：The wavelength tag in input optical signal is detected, and generates the signal of control erasing wavelength tag, wavelength tag is wiped；Wavelength tag in detection output optical signal, and judge whether wavelength tag has been wiped, if wavelength tag has been wiped, load new label.The invention enables the erasing of wavelength tag and regeneration and payload are relatively independent, payload will not be impacted；In addition, erasing and regeneration are divided into two relatively independent parts in the present invention, the optical signal for the label for being loaded with regeneration can be both exported, only can also be exported without the optical signal for loading any label so that the signal of optical label has greater flexibility.
Description
Technical field
The present invention relates to technical field of photo communication, more particularly to a kind of erasing of wavelength tag and renovation process and device.
Background technology
With the development of WDM (Wavelength Division Multiplex, wavelength-division multiplex) technology, current light leads to
Communication network can in same optical fiber tens optical signals to hundreds of wavelength of simultaneous transmission, and based on ROADM
The technology of (Reconfigurable Optical Add-Drop Multiplexer, ROADM) is facilitated
The configuration on demand of the wavelength of each in optic communication so that each wavelength in optical-fiber network between two websites (also referred to as node) not
The path maintained like, or certain wavelength also not distribute to certain two website forever.
In order to carry out the label that low frequency is superimposed on network topology identification and optical channel detection, wavelength that can be in optical-fiber network
Signal, it is entrained in label signal by solving while the label signal on each node in a network in identification optical channel
Information, obtains the information such as the transmission path of optical signal in a network is related to other wavelength.Load wavelength tag and (be also referred to as cursor
Label) signal mode including the use of electric adjustable optical attenuator, the optical transmitting set with low-rate modulation mode, with low-rate modulation side
High speed business modulator such as MZ (mach-zehnder) modulator, image intensifer of formula etc..The modulation depth of wavelength tag signal
It is generally arranged between 2%~10%, is such as 3% or 5%.
With the continuous improvement of optical-fiber network complexity, nodes quantity is increased rapidly, in DWDM (Dense
Wavelength Division Multiplexing, intensive multiplexed optical wave use) in system, the quantity of wavelength channel is also increasingly
It is many, then the wavelength tag transmitted among multiple nodes, it is possible to which that needs are modified, and this will realize the wiping of wavelength tag
Remove and regenerate.
It is to be based on carrying out effective payload mostly for the erasing and regeneration treatment of optical label in technology existing at present
Processing.
One Patent No. US7224909B2 United States Patent (USP) " method and system for selective
Optical payload cancellation ", relate to how to be wiped some of effective payload (payload) frequency range
Technology, in order in these frequency ranges load optical label signal when, it is to avoid influence of the payload to label signal.The technology
It is due to that payload is handled although the signal of corresponding frequency band can be wiped, so service signal can be affected, and
And signal to noise ratio (Signal Noise Ratio, referred to as SNR) can also be deteriorated to a certain extent, this is for transmission performance
One unfavorable factor；In addition, the technology uses feedforward control in control strategy, and this control method forms two differences
Signal processing path, in such cases, the problem of stationary problem of two independent pathways is exactly one more complicated, although
Light delay link has been used in the invention, but the accurate control and antijamming capability of delay hardly result in guarantee.
Another Patent No. US7702246B2 patent " optical label switching scheme
employing differential phase-shift keying for payloads and intensity
Modulation for labels using a single optical modulator ", relate to how to fold label signal
It is added on effective payload (payload), and using the technology of MZ modulators progress coded modulation, and utilize RF (radio
Frequency, radio frequency) the rejective amplifier technology of wiping label.Although the technology can wipe the signal of correspondence radio frequency band,
But it is due to that payload is handled, so noise can be introduced to a certain extent, service signal is interfered.In addition,
The technology, when reloading, is label signal to be wiped and regeneration treatment with two independent signal processing paths, this
Sample, the problem of synchronization in two paths will be one more complicated.
In summary, there are the following problems for prior art：The erasing and regeneration treatment of optical label, are entered based on effective payload
Row processing, thus payload can be impacted, and then influence the transmission performance of service signal；In addition, existing to optical label
The erasing of signal and regeneration treating method are wiped and regenerated respectively using two independent signal processing paths, Zhi Hou
It is overlapped at some node, therefore, is related to the stationary problem of two different signal processing paths, adds answering for realization
Miscellaneous degree.
The content of the invention
Present invention solves the technical problem that being to provide erasing and renovation process and the device of a kind of wavelength tag, wavelength tag
Erasing and regeneration and payload it is relatively independent, payload will not be impacted.
In order to solve the above technical problems, the invention provides a kind of erasing of wavelength tag and renovation process, methods described
Including：
The wavelength tag in input optical signal is detected, and generates the signal of control erasing wavelength tag, wavelength tag is entered
Row erasing；
Wavelength tag in detection output optical signal, and judge whether wavelength tag has been wiped, if wavelength tag has been wiped,
Then load new label.
Further, by front side light splitting coupler separated from input optical signal a part export give front side label detect
Device, the wavelength tag in the input optical signal separated is detected by the front side label testing；
Separate a part from the output optical signal by rear side light splitting coupler and export and give rear side label testing, by
Wavelength tag in the output optical signal that the rear side label testing detection is separated.
Further, the rear side label testing judges the ripple in the output optical signal that separates in the following manner
Whether long label has been wiped：
If the rear side label testing can't detect the amplitude of label or the label amplitude that detects is in preset range
It is interior, then judge that wavelength tag has been wiped；Otherwise, it is determined that wavelength tag is still suffered from.
Further, the signal of the generation control erasing wavelength tag, wipes wavelength tag, specifically includes：
The frequency of the wavelength tag of the input optical signal detected according to the front side label testing, generation with it is described defeated
The signal of the frequency identical control erasing wavelength tag of the wavelength tag of optical signal；
When the rear side label testing judges that the wavelength tag exported in optical signal is not wiped also, then judge described defeated
Whether the amplitude of the wavelength tag of optical signals is in the lowest point flex point, if in the lowest point flex point, to the control erasing ripple
The signal of long label enters horizontal phasing control；Otherwise, line amplitude adjustment is entered to the signal that wavelength tag is wiped in the control, until institute
State rear side label testing and judge that the wavelength tag exported in optical signal has been wiped.
Further, whether the amplitude of the wavelength tag is in the criterion of flex point, is specially：Using detection most
The amplitude of the wavelength tag of nearly three times is judged, if the range value of the wavelength tag of nearest three times is not dull, and in
Between range value be it is minimum, then judge be in the lowest point flex point.
Further, methods described also includes：
Carried out by the front side light splitting coupler and rear side light splitting coupler after light splitting, pass through image intensifer and tunable optical
Attenuator is amplified and decayed to optical signal, makes output optical signal identical with the luminous power of input optical signal.
Present invention also offers a kind of erasing of wavelength tag and regenerating unit, described device includes：Wipe module and again
Raw module,
The erasing module is used for, the wavelength tag in detection input optical signal, and generates control erasing wavelength tag
Signal, is wiped wavelength tag；Wavelength tag in detection output optical signal, and judge whether wavelength tag has been wiped；
The regeneration module is used for, after learning that wavelength tag has been wiped, then loads new label.
Further, the erasing module further comprises front side light splitting coupler, front side label testing, rear side light splitting
Coupler, rear side label testing, image intensifer, adjustable optical attenuator, adjustable phase delayed device, waveform generator and master control list
Member,
The front side light splitting coupler, image intensifer, adjustable optical attenuator and rear side light splitting coupler are sequentially connected；
The front side light splitting coupler is connected with the front side label testing, for separating one from input optical signal
Divide output to the front side label testing, the ripple in the input optical signal separated is detected by the front side label testing
Long label, and output label information gives the main control unit；
The rear side light splitting coupler is connected with the rear side label testing, for separating one from output optical signal
Divide output to the rear side label testing, the ripple in the output optical signal separated is detected by the rear side label testing
Long label, and output label information gives the main control unit；
The main control unit is connected with the waveform generator and the adjustable phase delayed device respectively, the adjustable phase
Delayed device is connected with the waveform generator and the adjustable optical attenuator respectively；The main control unit is according to the front side label
The frequency of the wavelength tag of input optical signal in the label information of detector output, generation and the wavelength of the input optical signal
The signal of the frequency identical control erasing wavelength tag of label, and the label letter exported according to the rear side label testing
Breath, the signal for controlling the adjustable phase delayed device and/or the waveform generator to wipe wavelength tag to the control is carried out
Phase and/or amplitude adjustment；And the signal output of the control erasing wavelength tag after finishing will be adjusted to the tunable optical
Attenuator.
Further, the rear side label testing judges the ripple in the output optical signal that separates in the following manner
Whether long label has been wiped：
If the rear side label testing can't detect the amplitude of label or the label amplitude that detects is in preset range
It is interior, then judge that wavelength tag has been wiped；Otherwise, it is determined that wavelength tag is still suffered from.
Further, the regeneration module further comprises label loading unit and control unit,
The main control unit is used for, and notifies described control unit wavelength tag to wipe, and sends control unit loading to
The content of new label；
Described control unit is used for, according to the notice of the main control unit, learns that wavelength tag has been wiped, and receive master control
The content of the new label of unit transmission, controls the label loading unit to load new label.
Further, the main control unit is used for, and learns defeated according to the label information that the rear side label testing is exported
When wavelength tag in optical signals is not wiped also, then judge whether the amplitude of the wavelength tag of the output optical signal is in paddy
Bottom flex point, if in the lowest point flex point, horizontal phasing control is entered to the signal that wavelength tag is wiped in the control；Otherwise, to institute
The signal for stating control erasing wavelength tag enters line amplitude adjustment, until the rear side label testing is judged in output optical signal
Wavelength tag wiped.
Further, the main control unit judges whether the amplitude of the wavelength tag is in the criterion of flex point, tool
Body is：Amplitude using the wavelength tag of nearest three times of detection is judged, if the amplitude of the wavelength tag of nearest three times
Value is not dull, and middle range value is minimum, then judges to be in the lowest point flex point.
The erasing for the wavelength tag that the present invention is provided and regeneration scheme, will not be impacted to payload, and wavelength tag is utilized
Other physical features for carrying light realize modulation loading, such as luminous power so that the erasing and regeneration of wavelength tag with it is net
Lotus is relatively independent；In addition, in the present invention, erasing and regeneration being divided into two relatively independent parts, loading can be both exported
The optical signal of the label of regeneration, can also only be exported without the optical signal for loading any label so that the signal of optical label has
There is greater flexibility.
Compared with prior art, the present invention has the outstanding advantage for realizing that simple, cost is low, due to not entering to payload
Row operation, so will not be impacted to the quality of business；In addition, the signal processing path in the present invention program is cascade form
, therefore, be not in the synchronous complexity problem of two processing paths, also improve reliability and stability.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is erasing and the composition schematic block diagram of regenerating unit of the wavelength tag of the embodiment of the present invention；
Fig. 2 is wavelength tag erasing and the schematic flow sheet of renovation process of the embodiment of the present invention.
Embodiment
The erasing for the wavelength tag that present embodiment is provided and renovation process, using following scheme：
The wavelength tag in input optical signal is detected, and generates the signal of control erasing wavelength tag, wavelength tag is entered
Row erasing；
Wavelength tag in detection output optical signal, and judge whether wavelength tag has been wiped, if wavelength tag has been wiped,
Then load new label.
Wherein, a part of optical signal is separated from input optical signal by light splitting coupler, is exported to label testing, by
Label testing detects the wavelength tag in the optical signal.
Further, light splitting coupler is separated from input optical signal after a part of optical signal, by image intensifer and can
Optical attenuator is amplified and decayed to optical signal, makes output optical signal identical with the luminous power of input optical signal.
Further, a part of optical signal is separated from the output optical signal by light splitting coupler, exported to label
Detector, detects the wavelength tag in the optical signal, and whether judge wavelength tag in the following manner by label testing
Wipe：
If the label testing can't detect the amplitude of label or the label amplitude that detects within a predetermined range,
Then judge that wavelength tag be not present/has been wiped；Otherwise, it is determined that wavelength tag is still suffered from.
The erasing for the wavelength tag that present embodiment is provided and regenerating unit include erasing module and regeneration module.Wherein,
Wiping module mainly includes light splitting coupler, label testing, image intensifer, adjustable optical attenuator, adjustable phase delayed device, ripple
Shape generator, main control unit.Regeneration module mainly includes label loading unit, control unit.
Specifically, erasing module can be located at before regeneration module, can also be arranged side by side with regeneration module.If need not
Original label is wiped, and is simply superimposed a label again and gets on, then regeneration module and erasing module can be arranged side by side, if needed
Wipe original label, then regeneration module will be located at erasing module rear, the optical signal without label of erasing module output is defeated
Enter to regeneration module, one new label of loading and then output.
Light splitting coupler is located at before image intensifer and behind adjustable optical attenuator respectively, a certain proportion of for separating
Light (such as 5%), exports and is detected and analyzed to label testing.
Label testing detects the optical label of the output light of optical label in input light and erasing module respectively, and with digital
Signal processing technology obtains the amplitude information of the optical label of detected light, and amplitude information is sent into main control unit.
The light that image intensifer is transmitted to light splitting coupler carries out appropriate amplification, and image intensifer is selectable unit (SU), and
And any position of signal transmission link can be located at.Image intensifer is placed in the position inputted into light, can be in favor of follow-up
After adjustable optical attenuator is decayed to optical signal, the optical signal of output keeps the work(consistent with input light after light splitting, still
Rate.
Adjustable optical attenuator is used under the control of external electric signal, and the optical signal of input is decayed.Adjustable light decay
The a certain characteristic value for subtracting device to the dough softening of the optical signal of input and the electric signal of outside input is linear.The spy of electric signal
The amount of levying can be voltage, or electric current etc., for the change of electric signal, adjustable optical attenuator is carried out within the time short enough
Response.
Adjustable phase delayed device is used for carrying out phase shift to the signal of input, and it can be based on Digital Electronic Technique
DPD (digital phase delay) or the equipment based on other technologies.
Waveform generator is used for generating the waveform of certain feature, and the feature of waveform includes frequency, shape, amplitude etc..It gives birth to
Into the basic waveform for controlling adjustable optical attenuator.
Control unit is used for, according to the notice of main control unit, after learning that wavelength tag has been wiped, abstract factory loading unit
The new label of loading.
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with accompanying drawing to the present invention
Embodiment be described in detail.It should be noted that in the case where not conflicting, in the embodiment and embodiment in the application
Feature can mutually be combined.
Fig. 1 shows the erasing of the wavelength tag of the embodiment of the present invention and the composition of regenerating unit, and the device mainly includes
Wipe module 801 and regeneration module 802.
Erasing module 801 is specifically included：Front side light splitting coupler 101, rear side light splitting coupler 102；Image intensifer 201；
Adjustable optical attenuator 202；Front side label testing 301, rear side label testing 302；Main control unit 401；Waveform generator
501；Adjustable phase delayed device 601.
Regeneration module 802 is specifically included：Control unit 402 and label loading unit 701.
Wherein, light splitting coupler separated from main optical signal sub-fraction as monitoring optical signal export give label detect
Device, splitting ratio can be specifically 1% or 5% or other numerical value.
Label testing analyzes wavelength tag information therein, such as Chirp-Z Transform using the method for Digital Signal Processing
(Chirped Z Transform, abbreviation CZT) or Fast Fourier Transform (FFT) (Fast Fourier Transform, abbreviation FFT)
Algorithm, obtains the frequency information and amplitude information of wavelength tag, and the frequency information of label information corresponds to the wavelength of wavelength signals,
Amplitude information corresponds to the luminous power of wavelength signals.The information of optical label is sent to main control unit and done further by label testing
Processing.
Main control unit realizes being uniformly controlled and coordinating for the work of whole system, and the realization of main control unit can be various moulds
Intend or digital technology, such as based on DSP Processor or based on fpga logic array.Main control unit is according to label testing
The information of transmission, determines the frequency of optical label, and then controlling waveform generator to generate one has the frequency as label
Signal.
Wave length generator generates the control erasing wavelength tag of certain frequency and amplitude under the control of main control unit
Signal (its frequency is identical with the frequency of the wavelength tag of input optical signal, and what amplitude then can be tentative gives a median),
And export and give adjustable phase delayed device.
Adjustable phase delayed device carries out delayed phase processing under the control of main control unit to the signal of input, output
Signal is used to be controlled adjustable optical attenuator.
Image intensifer is carried out using image intensifer in appropriate amplification, this programme to optical signal, and image intensifer is put
Before adjustable optical attenuator, so that after the decay of adjustable optical attenuator and light splitting coupler, the optical signal of output
Remain able to the luminous power consistent with input optical signal.
Label loading unit, realizes that each wavelength loads a unique wavelength tag.During wavelength label technology is referred to
State posts and telecommunications industry standard YD/T 2003-2009 " OADM (ROADM) equipment and technology requirement of restructural " Appendix D, is situated between
Wavelength trace monitoring (wavelength tag) technology in the ROADM that continued applications.In the source endpoint of wavelength path, enter in wavelength signals
Coding is modulated using encoder before wavelength-division network, is that the additional the whole network of each wavelength signals uniquely identifies (wavelength
Label)；Wavelength path pass through each node each reference point on, can by embedded wavelength tag detector come
The label of each wavelength of the point is passed through in monitoring and identification.
The erasing of the wavelength tag of the present invention and regeneration flow are described in detail with reference to Fig. 2.
Optical label in step A. detection input optical signals；
As shown in figure 1, front side light splitting coupler 101 separates a part of light to front side label testing 301, the inspection of front side label
Survey device 301 and analyze wavelength tag information therein using the method for Digital Signal Processing, and handled accordingly, output label
Information to main control unit 401.
The signal of step B. generation control erasings；
The control waveform generator 501 of main control unit 401 produces the signal with certain frequency, and exports stagnant to adjustable phase
Device 601 afterwards.
Optical label in step C. detection output optical signals；
Rear side light splitting coupler 102 separates a part of light to rear side label testing 302, and rear side label testing 302 is defeated
The information of outgoing label is to main control unit 401.
Step D. judges whether optical label still has, if it is, going to step F；If it is not, then going to step E；
If without optical label in output light, care label has been wiped free of, whereas if also having in output light
Optical label, then illustrate that control process needs are iterated adjustment.
Wherein, the criterion that optical label has been wiped can be：Label testing can't detect the amplitude of label either
The label amplitude detected is in the as far as possible small scope allowed.
Step E. output controls or indication signal, mark erase process have been completed；
Main control unit 401 sends control or indication signal to control unit 402, after control unit 402 is received, learns label
It is now erased, just label can be reloaded with abstract factory loading unit 701.
Step F. judges whether the amplitude of optical label is to be in the lowest point flex point, if it is, going to step G；If it is not,
Then go to step H；
When main control unit 401 judges that needs are iterated adjustment, can't determine it is that reverse-phase compensation is inadequate, still
Attenuation amplitude not enough, at this moment needs whether the amplitude for judging label is in flex point, if it is, explanation phase need not be adjusted,
Adjustment amplitude is now only needed to, if it is not, then explanation also needs to adjustment phase place.
Specifically, whether the criterion in flex point can be the amplitude of optical label：Examined using the labels of nearest three times
The amplitude of survey is judged, if the value of nearest three times is not dull (i.e. range value curve has monotonicity), and middle
Value is minimum, then explanation detects the lowest point flex point.
Step G. carries out phase shift processing to the signal of control erasing；
The control adjustable phase of main control unit 401 delayed device 601, phase shift processing is carried out to the signal of control erasing.
The amplitude of step H. adjustment control erasing signals；
The control of main control unit 401 501 pairs of signals to control erasing of waveform generator enter line amplitude adjustment.
Step I. works as after the completion of erase process, controlled loading unit, loads new label；
Main control unit 402 receives the new label that main control unit 401 is transmitted after the instruction of erase process completion is received
Content, abstract factory loading unit 701 loads new label, completes the regeneration of label.
It these are only that the present invention's is preferable to carry out case, be not intended to limit the invention, the present invention can also have other
Various embodiments, in the case of without departing substantially from spirit of the invention and its essence, those skilled in the art can be according to this hair
It is bright to make various corresponding changes and deformation, but these corresponding changes and deformation should all belong to appended claims of the invention
Protection domain.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and constituted
Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to they are stored
Performed in the storage device by computing device, and in some cases, can be shown to be performed different from order herein
The step of going out or describe, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or
Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.
Claims (10)
1. erasing and the renovation process of a kind of wavelength tag, it is characterised in that methods described includes：
The wavelength tag in input optical signal is detected, and generates the signal of control erasing wavelength tag, wavelength tag is wiped
Remove；
Wavelength tag in detection output optical signal, and judge whether wavelength tag has been wiped, if wavelength tag has been wiped, plus
Carry new label；
The signal of the generation control erasing wavelength tag, wipes wavelength tag, specifically includes：
When rear side label testing judges that the wavelength tag exported in optical signal is not wiped also, then the output optical signal is judged
The amplitude of wavelength tag whether be in the lowest point flex point, if in the lowest point flex point, wavelength tag is wiped to the control
Signal enters horizontal phasing control；Otherwise, line amplitude adjustment is entered to the signal that wavelength tag is wiped in the control, until the rear side mark
Label detector judges that the wavelength tag exported in optical signal has been wiped；
The signal of the generation control erasing wavelength tag, wipes wavelength tag, specifically also includes：
The frequency of the wavelength tag of the input optical signal detected according to front side label testing, generation and the input optical signal
Wavelength tag frequency identical control erasing wavelength tag signal.
2. the method as described in claim 1, it is characterised in that
A part is separated from input optical signal by front side light splitting coupler exported and give front side label testing, by the front side
Wavelength tag in the input optical signal that label testing detection is separated；
Separate a part from the output optical signal by rear side light splitting coupler and export and give rear side label testing, by described
Wavelength tag in the output optical signal that the detection of rear side label testing is separated.
3. method as claimed in claim 2, it is characterised in that
Whether the rear side label testing judge wavelength tag in the output optical signal that separates in the following manner
Erasing：
If the rear side label testing can't detect the amplitude of label or the label amplitude that detects within a predetermined range,
Then judge that wavelength tag has been wiped；Otherwise, it is determined that wavelength tag is still suffered from.
4. the method as described in claim 1, it is characterised in that
Whether the amplitude of the wavelength tag is in the criterion of flex point, is specially：Utilize the wavelength of nearest three times of detection
The amplitude of label is judged, if the range value of the wavelength tag of nearest three times is not dull, and middle range value is
Minimum, then judge to be in the lowest point flex point.
5. method as claimed in claim 3, it is characterised in that methods described also includes：
Carried out by the front side light splitting coupler and rear side light splitting coupler after light splitting, pass through image intensifer and variable optical attenuation
Device is amplified and decayed to optical signal, makes output optical signal identical with the luminous power of input optical signal.
6. erasing and the regenerating unit of a kind of wavelength tag, it is characterised in that described device includes：Wipe module and regeneration mould
Block,
It is described erasing module be used for, detection input optical signal in wavelength tag, and generate control erasing wavelength tag signal,
Wavelength tag is wiped；Wavelength tag in detection output optical signal, and judge whether wavelength tag has been wiped；
The regeneration module is used for, after learning that wavelength tag has been wiped, then loads new label；
The erasing module further comprises main control unit, front side label testing and rear side label testing；
The main control unit is used for, and the label information exported according to the rear side label testing learns the ripple in output optical signal
When long label is not wiped also, then judge whether the amplitude of the wavelength tag of the output optical signal is in the lowest point flex point, if place
In the lowest point flex point, then horizontal phasing control is entered to the signal that wavelength tag is wiped in the control；Otherwise, to the control erasing wavelength
The signal of label enters line amplitude adjustment, until the rear side label testing judges that the wavelength tag exported in optical signal has been wiped
Remove；
The signal of the generation control erasing wavelength tag, wipes wavelength tag, specifically also includes：
The frequency of the wavelength tag of the input optical signal detected according to the front side label testing, generation and the input light
The signal of the frequency identical control erasing wavelength tag of the wavelength tag of signal.
7. device as claimed in claim 6, it is characterised in that the erasing module further comprise front side light splitting coupler,
Rear side light splitting coupler, image intensifer, adjustable optical attenuator, adjustable phase delayed device and waveform generator,
The front side light splitting coupler, image intensifer, adjustable optical attenuator and rear side light splitting coupler are sequentially connected；
The front side light splitting coupler is connected with the front side label testing, a part of defeated for being separated from input optical signal
Go out to the front side label testing, the wavelength mark in the input optical signal separated is detected by the front side label testing
Label, and output label information gives the main control unit；
The rear side light splitting coupler is connected with the rear side label testing, a part of defeated for being separated from output optical signal
Go out to the rear side label testing, the wavelength mark in the output optical signal separated is detected by the rear side label testing
Label, and output label information gives the main control unit；
The main control unit is connected with the waveform generator and the adjustable phase delayed device respectively, and the adjustable phase is delayed
Device is connected with the waveform generator and the adjustable optical attenuator respectively；The main control unit is detected according to the front side label
The frequency of the wavelength tag of input optical signal in the label information of device output, generation and the wavelength tag of the input optical signal
Frequency identical control erasing wavelength tag signal, and according to the rear side label testing export label information, control
Make the adjustable phase delayed device and/or the waveform generator and line phase is entered to the signal of the control erasing wavelength tag
And/or amplitude adjustment；And the signal output of the control erasing wavelength tag after finishing will be adjusted to the variable optical attenuation
Device.
8. device as claimed in claim 7, it is characterised in that
Whether the rear side label testing judge wavelength tag in the output optical signal that separates in the following manner
Erasing：
If the rear side label testing can't detect the amplitude of label or the label amplitude that detects within a predetermined range,
Then judge that wavelength tag has been wiped；Otherwise, it is determined that wavelength tag is still suffered from.
9. the device as described in claim 6,7 or 8, it is characterised in that the regeneration module further comprises that label loading is single
Member and control unit,
The main control unit is used for, and notifies described control unit wavelength tag to wipe, and it is new to send control unit loading to
The content of label；
Described control unit is used for, according to the notice of the main control unit, learns that wavelength tag has been wiped, and receive main control unit
The content of the new label of transmission, controls the label loading unit to load new label.
10. device as claimed in claim 7, it is characterised in that
The main control unit judges whether the amplitude of the wavelength tag is in the criterion of flex point, is specially：Utilize detection
The amplitude of the wavelength tag of nearest three times judged, if the range value of the wavelength tag of nearest three times is not dull,
And middle range value is minimum, then judge to be in the lowest point flex point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210045879.2A CN102594442B (en) | 2012-02-27 | 2012-02-27 | A kind of erasing of wavelength tag and renovation process and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210045879.2A CN102594442B (en) | 2012-02-27 | 2012-02-27 | A kind of erasing of wavelength tag and renovation process and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102594442A CN102594442A (en) | 2012-07-18 |
| CN102594442B true CN102594442B (en) | 2017-08-01 |
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| CN201210045879.2A Active CN102594442B (en) | 2012-02-27 | 2012-02-27 | A kind of erasing of wavelength tag and renovation process and device |
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| CN112636840B (en) * | 2020-11-30 | 2022-03-25 | 武汉邮电科学研究院有限公司 | Erasing method and device suitable for multi-carrier frequency domain modulation signals |
| CN112636866B (en) * | 2020-12-31 | 2023-12-15 | 武汉邮电科学研究院有限公司 | Wavelength label generation method and device and detection method and device |
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| CN101005330A (en) * | 2006-12-30 | 2007-07-25 | 电子科技大学 | Light grouping exchange method based on serial arrangement light orthogonal code label |
| CN101026892A (en) * | 2006-12-30 | 2007-08-29 | 电子科技大学 | Label and pay load separating method for optical packet exchange |
| CN101394232A (en) * | 2007-12-17 | 2009-03-25 | 北京邮电大学 | Device and method based on inserting and erasing of SOA-MZI optical cursor |
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