CN103763036A - Wave length processing method, device and system - Google Patents
Wave length processing method, device and system Download PDFInfo
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- CN103763036A CN103763036A CN201410024847.3A CN201410024847A CN103763036A CN 103763036 A CN103763036 A CN 103763036A CN 201410024847 A CN201410024847 A CN 201410024847A CN 103763036 A CN103763036 A CN 103763036A
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Abstract
The invention provides a wave length processing method, device and system. The method comprises the steps that an MCU receives a switch instruction, wherein the switch instruction comprises a pre-switch channel number, and a first configuration parameter is acquired according to the pre-switch channel number; if a current wave band is different from a pre-switch wave band corresponding to the pre-switch channel number, an IDAC corresponding to the pre-switch wave band is acquired; the MCU turns off a laser device, switches an IDAC corresponding to the current wave band to the IDAC corresponding to the pre-switch wave band, and configures the first configuration parameter to the IDAC corresponding to the pre-switch wave band; the IDAC corresponding to the pre-switch wave band is triggered so that the IDAC corresponding to the pre-switch wave band can generate a corresponding first DBR current according to the first configuration parameter and output the first DBR current to the laser device; the laser device is turned on so that the laser device can control the output wave length according to the first DBR current.
Description
technical field
The present invention relates to optical-fiber network technology, relate in particular to a kind of processing method, device and system of wavelength.
Background technology
At wavelength division multiplexing (Wavelength Division Multiplexing; Be called for short: WDM) passive optical-fiber network (Passive Optical Network; Be called for short: PON) (the Optical Network Unit of the optical network unit in system; Be called for short: ONU), in the adjustable transceiver of end wavelength, tunable laser can adopt distributed Bragg (Distributed Bragg Reflection; Be called for short: DBR) laser, and the wavelength of its output can be by dbr current control, and wherein, this dbr current is the drive current of the MCU output in adjustable transceiver, is equivalent to the grid current of DBR laser.
Concrete, Fig. 1 is the relationship change figure of wavelength and dbr current, as shown in Figure 1, along with the increase of this dbr current, wavelength also presents a kind of variation of similar Step distribution formula.In addition, for a certain specific wavelength, when dbr current changes, wavelength changes in very little scope, if but while reaching the critical point of this wave-length coverage, then increasing or reduce electric current, wavelength can present the variation that a notch cuttype strengthens or reduces.For example, and more in short-term, wavelength generation step changes required electric current greatly at wavelength: by the wavelength change of wavelength 1548.51nm, during to the wavelength of 1547.72nm, dbr current need to be changed to 37.3 milliamperes by 30.8 milliamperes.When wavelength is longer, it is less that wavelength step changes required electric current, for example: by the wavelength change of 1559.79nm, during to the wavelength of 1558.98nm, dbr current need to be changed to 0.41 milliampere by 0.14 milliampere.
In addition, dbr current can be by single electric current digital to analog converter (the Current Digital-to-Analog Converters being arranged in MCU; Be called for short: IDAC) regulate.At present, in order meeting, all wavelengths can be to export, enough large IDAC of range need to be to select, but when long wavelength, range enough large IDAC, because precision is not high, therefore can cause this long wavelength of output to have skew, thereby cause this long wavelength's accuracy lower.And if in order to meet the accuracy of wavelength, while selecting the IDAC of range little (being that precision is high), can cause exporting all wavelengths.For instance, take two IDAC of full scale 20mA and 50mA as example, if MCU selects the IDAC of 20mA, the precision of this IDAC higher (0.009mA), but because obviously range is inadequate, can cause exporting all wavelengths.If MCU selects the IDAC of 50mA, the precision of this IDAC lower (0.024mA), can cause long wavelength's the accurate wavelength of very difficult output.
Therefore, because existing dbr current can only regulate by single IDAC, therefore can there is the low problem of long wavelength's accuracy causing for the whole wavelength output area of ensuring coverage, or in order to guarantee that long wavelength's accuracy is high and cause the problem that cannot export all wavelengths.
Summary of the invention
The invention provides a kind of processing method, device and system of wavelength, for solving prior art due to the low problem of long wavelength's accuracy causing for the whole wavelength output area of ensuring coverage that adopts that single IDAC regulates that dbr current causes, or cause in order to guarantee that long wavelength's accuracy is high the problem that cannot export all wavelengths.
First aspect of the present invention is to provide a kind of processing method of wavelength, comprising:
MCU receives switching command, and described switching command comprises pre-switch channel number, and according to described pre-switch channel number, obtains the first configuration parameter;
If the pre-switch wave band that current wave band is corresponding with described pre-switch channel number is not identical, described MCU obtains the IDAC corresponding with described pre-switch wave band;
Described MCU closes laser, and it is upper that IDAC corresponding current wave band is switched to the IDAC that described pre-switch wave band is corresponding, and described the first configuration parameter is configured on the IDAC that described pre-switch wave band is corresponding;
Described MCU triggers IDAC corresponding to described pre-switch wave band, makes it according to described the first configuration parameter, generates the first corresponding dbr current and outputs on described laser;
Described MCU opens laser, to make described laser according to the wavelength of described the first dbr current control output.
Another aspect of the present invention is to provide a kind of processing unit of wavelength, comprising:
Receiver module, for receiving switching command, described switching command comprises pre-switch channel number;
Configuration parameter acquisition module, for according to described pre-switch channel number, obtains the first configuration parameter;
IDAC acquisition module, if not identical for the current wave band pre-switch wave band corresponding with described pre-switch channel number, obtains the IDAC corresponding with described pre-switch wave band;
Laser process module, for after described IDAC acquisition module gets the IDAC corresponding with described pre-switch wave band, closes laser;
Hand-off process module, for after described laser process module is closed described laser, IDAC corresponding current wave band is switched to the IDAC that described pre-switch wave band is corresponding upper, and described the first configuration parameter is configured on the IDAC that described pre-switch wave band is corresponding;
Current processing module, for after described hand-off process module is configured on the IDAC that described pre-switch wave band is corresponding by described the first configuration parameter, trigger IDAC corresponding to described pre-switch wave band, make it according to described the first configuration parameter, generate the first corresponding dbr current and output on described laser;
Described laser process module also, for after described current processing module outputs to described laser by described the first dbr current, is opened laser, to make described laser according to the wavelength of described the first dbr current control output.
Another aspect of the present invention is to provide a kind for the treatment of system of wavelength, comprising: MCU and laser, and wherein, described MCU is the processing unit of wavelength described above; Described laser is for receiving the dbr current of described MCU output, and the wavelength of exporting according to described dbr current control.
Technique effect of the present invention is: MCU receives switching command, this switching command comprises pre-switch channel number, and according to this pre-switch channel number, obtain the first configuration parameter, if the pre-switch wave band that current wave band is corresponding with pre-switch channel number is not identical, obtain the IDAC corresponding with this pre-switch wave band, close laser, IDAC corresponding to wave band before deserving is switched on the IDAC that this pre-switch wave band is corresponding, and the first configuration parameter is configured on the IDAC that this pre-switch wave band is corresponding, and trigger the IDAC that this pre-switch wave band is corresponding, make it according to this first configuration parameter, generate the first corresponding dbr current and output on laser, open again laser, to make laser according to the wavelength of the first dbr current control output, due to IDAC corresponding to different wave bands, therefore, MCU can be corresponding according to pre-switch channel number pre-switch wave band, select its corresponding IDAC, thereby trigger this IDAC and export corresponding dbr current to laser, thereby guaranteed the output of all wavelengths, can effectively improve again the output accuracy of all wavelengths, and then solved in prior art due to the low problem of long wavelength's accuracy causing for ensuring coverage whole wavelength output area that adopts that single IDAC regulates that dbr current causes, or in order to guarantee that long wavelength's accuracy is high and cause the problem that cannot export all wavelengths.
Accompanying drawing explanation
Fig. 1 is the relationship change figure of wavelength and laser dbr current;
The processing method that Fig. 2 is wavelength of the present invention based on WDM-PON ONU system transmitting terminal configuration diagram;
Fig. 3 is the flow chart of an embodiment of the processing method of wavelength of the present invention;
Fig. 4 is the flow chart of another embodiment of the processing method of wavelength of the present invention;
Fig. 5 is the flow chart of another embodiment of the processing method of wavelength of the present invention;
Fig. 6 is the structure chart of an embodiment of the processing unit of wavelength of the present invention;
Fig. 7 be in the present embodiment in MCU one of hand-off process module 25 and current processing module 26 realize principle schematic.
Embodiment
The processing method that Fig. 2 is wavelength of the present invention based on WDM-PON ONU system transmitting terminal configuration diagram, as shown in Figure 2, this WDM-PON ONU system transmitting terminal comprises: MCU11, tunable laser (Tunable Laser) 12, laser driver (Laser Driver) 13 and wavelength filter (Wavelength Filter) 14.Wherein, wavelength filter 14, for filtering, is exported to the wavelength of 1547.72nm with the 1559.79nm that makes only tunable laser 12 to be exported.In addition, it is distribution bragg type laser that tunable laser 12 can adopt DBR() be example, as shown in Figure 2, the wavelength that tunable laser 12 is exported is determined jointly by drive currents (Drive Current) such as the biasing of exporting in dbr current and laser driver 13, modulation.
In addition, the wavelengthtunable frequency of sending from tunable laser 12 is from 192.2THz to 193.7THz, wavelength is from 1559.79nm to 1547.72nm, take 100G as interval, can be divided into 16 wavelength (being the wavelength0 to 15 shown in Fig. 2), each wavelength can be respectively by corresponding passage (not drawing in Fig. 2) output, and send in wavelength filter 14, this wavelength is controlled by dbr current and is met certain characteristic: along with the increase of dbr current, wavelength presents a kind of similar Step distribution characteristic, specifically can be with reference to shown in Fig. 1.Wherein, this dbr current is the electric current of the IDAC output in MCU.
Fig. 3 is the flow chart of an embodiment of the processing method of wavelength of the present invention, the WDM-PON ONU emission system configuration diagram based on shown in Fig. 2, and as shown in Figure 3, the method for the present embodiment comprises:
In the present embodiment, this first configuration parameter is digital signal, be the needed digital value of IDAC digital-to-analogue conversion, it comprises the digital value of the required dbr current of digital-to-analogue conversion, concrete, the dbr current that IDAC becomes to regulate tunable laser 12 to export by the digital value digital-to-analogue conversion of the required dbr current of this digital-to-analogue conversion.Wherein, this dbr current is analog signal.
If the pre-switch wave band that the current wave band of step 102 is corresponding with this pre-switch channel number is not identical, this MCU obtains the IDAC corresponding with this pre-switch wave band.
In the present embodiment, take above-mentioned tunable laser 12, export 16 wavelength as example, can in advance these 16 wavelength be divided into multiple types, the corresponding wave band of each type, the i.e. corresponding wave band of the corresponding passage of wavelength in each type.For instance, 16 wavelength can be divided into two types, its corresponding passage can be divided into two types: need to use the passage of small electric stream adjusting and the passage that needs are used larger electric current to regulate, for example: by channel number, be 1 to 12 to be defined as the passage that need to use small electric stream to regulate, can configure the more high-precision IDAC of use and process; By channel number, be 13 to 15 to orientate as and need the passage that uses larger electric current to regulate, i.e. configuration is used the IDAC of higher output area to process.
In the present embodiment, if wave band is not identical with this pre-switch wave band before deserving, the regulative mode difference of IDAC is used in explanation, and the IDAC that may be converted to from using more high-precision IDAC to process the higher output area of use processes; Or, from using the IDAC of higher output area to process to be converted to the more high-precision IDAC of use, process.
In the present embodiment, MCU is by triggering laser driver 13 not output driving current, to make laser not luminous, i.e. and output wavelength not, thus realize closing of laser.And trigger laser driver 13 output driving currents at MCU, and to make laser luminous, i.e. output wavelength, thus realize opening of laser.In addition, this first configuration parameter can also comprise: the digital value of the required modulated current of digital-to-analogue conversion and the digital value of bias current.
Concrete, in the present embodiment, when switching IDAC, tunable laser 12(is above-mentioned laser) in still retain the dbr current that IDAC corresponding to current wave band generates, thereby may have influence on the normally luminous of tuned laser 12, therefore, when switching IDAC, need first laser (being tunable laser 12) to cut out, by configuration logic signal TxDisable, be 1 to realize, concrete, it is 1 logical signal that MCU sends TxDisable by TxDisable pin to laser driver 13, to make not output driving current of laser driver 13, thereby laser cuts out, so that not output wavelength of laser.After switching IDAC completes, MCU also needs the first configuration parameter by bus transfer to laser driver 13, to make laser driver 13 according to the digital value of the required modulated current of digital-to-analogue conversion and the digital value of bias current in this first configuration parameter, generate drive current, and be 0 by TxDisable set, by TxDisable pin, to laser driver, send the logical signal that TxDisable is 0 again, to make the drive current after laser driver 13 outputs regulate, thereby laser is opened, to make the laser can output wavelength, according to the wavelength of the first dbr current control output receiving.
It should be noted that, in each embodiment, IDAC can be integrated in MCU.
In the present embodiment, MCU receives switching command, this switching command comprises pre-switch channel number, and according to this pre-switch channel number, obtain the first configuration parameter, if the pre-switch wave band that current wave band is corresponding with pre-switch channel number is not identical, obtain the IDAC corresponding with this pre-switch wave band, close laser, IDAC corresponding to wave band before deserving is switched on the IDAC that this pre-switch wave band is corresponding, and the first configuration parameter is configured on the IDAC that this pre-switch wave band is corresponding, and trigger the IDAC that this pre-switch wave band is corresponding, make it according to this first configuration parameter, generate the first corresponding dbr current and output on laser, open again laser, to make laser according to the wavelength of the first dbr current control output, due to IDAC corresponding to different wave bands, therefore, MCU can be corresponding according to pre-switch channel number pre-switch wave band, select its corresponding IDAC, thereby trigger this IDAC and export corresponding dbr current to laser, thereby guaranteed the output of all wavelengths, can effectively improve again the output accuracy of all wavelengths, and then solved in prior art due to the low problem of long wavelength's accuracy causing for ensuring coverage whole wavelength output area that adopts that single IDAC regulates that dbr current causes, or in order to guarantee that long wavelength's accuracy is high and cause the problem that cannot export all wavelengths.
Fig. 4 is the flow chart of another embodiment of the processing method of wavelength of the present invention, the WDM-PON ONU emission system configuration diagram based on shown in Fig. 2, and as shown in Figure 4, the method for the present embodiment comprises:
Alternatively, the method can also comprise:
This MCU, every the scheduled time, gathers the second temperature, and obtains the look-up table corresponding with this second temperature;
This MCU searches look-up table corresponding to this second temperature, obtains second configuration parameter number corresponding with deserving prepass;
This MCU, is generated the 3rd corresponding dbr current and also outputs on this laser according to this second configuration parameter by IDAC corresponding to wave band before deserving, to make this laser according to the wavelength of the 3rd dbr current control output.
In the present embodiment, set up in advance the mapping relations of channel number and configuration parameter, and be stored in the data storage areas of MCU, in addition, these mapping relations are also relevant with temperature, i.e. mapping relations difference corresponding to different temperature.In other words, same channel number, due to temperature difference, its corresponding configuration parameter is also different.
In the present embodiment, demand difference according to different wavelength to dbr current, can utilize MCU to control to trigger IDAC realizes according to different configuration parameters, adopt different IDAC regulative modes, can guarantee the output of laser all wavelengths, can effectively improve again the output accuracy of all wavelengths, and then the sensitivity that has just improved receiving terminal, improve the performance of whole WDM-PON ONU system.
Fig. 5 is the flow chart of another embodiment of the processing method of wavelength of the present invention, and on above-mentioned basis embodiment illustrated in fig. 3, as shown in Figure 5, a kind of specific implementation of step 103 is:
Step 301, MCU close laser, and export control signal to selector, for this selector, receiving after this control signal, by this laser with deserve before the first passage set up between IDAC corresponding to wave band switch to the second channel of setting up between this laser and IDAC corresponding to this pre-switch wave band.
Alternatively, a kind of specific implementation of step 104 is:
The IDAC that before step 303, MCU trigger and deserve, wave band is corresponding, according to this first configuration parameter, generates the first corresponding dbr current, and this first dbr current is outputed on this laser by this second channel.
In the present embodiment, concrete, in the situation that wave band is two kinds, this selector can be single-pole double-throw switch (SPDT).
In addition, preferably, before deserving, IDAC corresponding to wave band is used for meeting range demand; The IDAC that this pre-switch wave band is corresponding is used for meeting accuracy requirement; Or,
The IDAC that this pre-switch wave band is corresponding is used for meeting accuracy requirement; Before deserving, IDAC corresponding to wave band is used for meeting range demand.
Fig. 6 is the structure chart of an embodiment of the processing unit of wavelength of the present invention, as shown in Figure 6, this device can be specially MCU, and comprises: receiver module 21, configuration parameter acquisition module 22, IDAC acquisition module 23, laser process module 24, hand-off process module 25 and current processing module 26.Wherein, receiver module 21 is for receiving switching command, and this switching command comprises pre-switch channel number; Configuration parameter acquisition module 22, for according to this pre-switch channel number, obtains the first configuration parameter; If IDAC acquisition module 23 is not identical for the current wave band pre-switch wave band corresponding with this pre-switch channel number, obtain the IDAC corresponding with this pre-switch wave band; Laser process module 24, for after this IDAC acquisition module 23 gets the IDAC corresponding with this pre-switch wave band, is closed laser; Hand-off process module 25 is for after this laser process module 24 is closed this laser, IDAC corresponding current wave band is switched to the IDAC that this pre-switch wave band is corresponding upper, and this first configuration parameter is configured on the IDAC that this pre-switch wave band is corresponding; Current processing module 26 is for after this hand-off process module 25 is configured on the IDAC that this pre-switch wave band is corresponding by this first configuration parameter, trigger the IDAC that this pre-switch wave band is corresponding, make it according to this first configuration parameter, generate the first corresponding dbr current and output on this laser; This laser process module 24 also, for after this current processing module 26 outputs to this laser by this first dbr current, is opened laser, to make this laser according to the wavelength of this first dbr current control output.
The device of the present embodiment can execution graph 3 shown in the technical scheme of embodiment of the method, it is similar that it realizes principle, repeats no more herein.
In the present embodiment, MCU receives switching command, this switching command comprises pre-switch channel number, and according to this pre-switch channel number, obtain the first configuration parameter, if the pre-switch wave band that current wave band is corresponding with pre-switch channel number is not identical, obtain the IDAC corresponding with this pre-switch wave band, close laser, IDAC corresponding to wave band before deserving is switched on the IDAC that this pre-switch wave band is corresponding, and the first configuration parameter is configured on the IDAC that this pre-switch wave band is corresponding, and trigger the IDAC that this pre-switch wave band is corresponding, make it according to this first configuration parameter, generate the first corresponding dbr current and output on laser, open again laser, to make laser according to the wavelength of the first dbr current control output, due to IDAC corresponding to different wave bands, therefore, MCU can be corresponding according to pre-switch channel number pre-switch wave band, select its corresponding IDAC, thereby trigger this IDAC and export corresponding dbr current to laser, thereby guaranteed the output of all wavelengths, can effectively improve again the output accuracy of all wavelengths, and then solved in prior art due to the low problem of long wavelength's accuracy causing for ensuring coverage whole wavelength output area that adopts that single IDAC regulates that dbr current causes, or in order to guarantee that long wavelength's accuracy is high and cause the problem that cannot export all wavelengths.
Further, in another embodiment of the present invention, on the basis of above-mentioned Fig. 6 example illustrated, if this current processing module 26 is also identical with this pre-switch wave band for wave band before deserving, by IDAC corresponding to current wave band according to this first configuration parameter, generate the second corresponding dbr current and also output on this laser.
Alternatively, this configuration parameter acquisition module 22 is specifically for obtaining the first temperature of current collection, and obtains the look-up table corresponding with this first temperature, and wherein, this look-up table comprises the mapping relations of channel number and configuration parameter; Inquire about look-up table corresponding to this first temperature, obtain first configuration parameter corresponding with this pre-switch channel number.
Alternatively, this configuration parameter acquisition module 22 also, for every the scheduled time, gathers the second temperature, and obtains the look-up table corresponding with this second temperature; Search look-up table corresponding to this second temperature, obtain second configuration parameter number corresponding with deserving prepass.
Further, in yet another embodiment of the present invention, on the basis of above-mentioned Fig. 6 example illustrated, hand-off process module 25 is specifically for exporting control signal to selector, for this selector, receiving after this control signal, by this laser with deserve before the first passage set up between IDAC corresponding to wave band switch to the second channel of setting up between this laser and IDAC corresponding to this pre-switch wave band, and this first configuration parameter is configured on the IDAC that this pre-switch wave band is corresponding.
Alternatively, Fig. 7 is the principle schematic that in the present embodiment, in MCU, IDAC switches, as shown in Figure 7, it is example that tunable laser 12 is exported to 16 wavelength, for instance, 16 wavelength can be divided into two types, its corresponding passage can be divided into two types: need to use the passage of small electric stream adjusting and the passage that needs are used larger electric current to regulate, for example: by channel number, be 1 to 12 to be defined as the passage that need to use small electric stream to regulate, can configure the more high-precision IDAC of use and process, be i.e. IDAC1 in Fig. 7; By channel number, be 13 to 15 to orientate as and need the passage that uses larger electric current to regulate, i.e. configuration is used the IDAC of higher output area to process, i.e. IDAC2 in Fig. 7.In addition, this selector can be specially single-pole double-throw switch (SPDT) (Single-Pole/Double-Throw; Be called for short: SPDT), the level of the control pin IDAC_Select of this single-pole double-throw switch (SPDT) can be exported by MCU, when IDAC_Select=1, between IDAC1 and laser, sets up passage; When IDAC_Select=0, between IDAC2 and laser, set up passage.
The present invention also provides a kind for the treatment of system of wavelength, comprising: MCU and laser, wherein, this MCU is the processing unit of the wavelength shown in above-mentioned Fig. 6, and the processing method of the wavelength shown in can execution graph 3 to Fig. 5 arbitrary, it is similar that it realizes principle, repeats no more herein.This laser is for receiving the dbr current of this MCU output, and the wavelength of exporting according to this dbr current control.
Alternatively, this system can also comprise: selector, be connected with this laser with this MCU respectively, the control signal sending for receiving this MCU, and according to this control signal, between this laser and IDAC corresponding to this pre-switch wave band, set up passage, with the dbr current that makes the IDAC output that this pre-switch wave band is corresponding, by this passage, output on this laser.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each embodiment of the method can complete by the relevant hardware of program command.Aforesaid program can be stored in a computer read/write memory medium.This program, when carrying out, is carried out the step that comprises above-mentioned each embodiment of the method; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.
Finally it should be noted that: above each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (13)
1. a processing method for wavelength, is characterized in that, comprising:
MCU receives switching command, and described switching command comprises pre-switch channel number, and according to described pre-switch channel number, obtains the first configuration parameter;
If the pre-switch wave band that current wave band is corresponding with described pre-switch channel number is not identical, described MCU obtains the IDAC corresponding with described pre-switch wave band;
Described MCU closes laser, and it is upper that IDAC corresponding current wave band is switched to the IDAC that described pre-switch wave band is corresponding, and described the first configuration parameter is configured on the IDAC that described pre-switch wave band is corresponding;
Described MCU triggers IDAC corresponding to described pre-switch wave band, makes it according to described the first configuration parameter, generates the first corresponding dbr current and outputs on described laser;
Described MCU opens laser, to make described laser according to the wavelength of described the first dbr current control output.
2. the processing method of wavelength according to claim 1, is characterized in that, also comprises:
If described current wave band is identical with described pre-switch wave band, by IDAC corresponding to current wave band according to described the first configuration parameter, generate the second corresponding dbr current and also output on described laser.
3. the processing method of wavelength according to claim 1 and 2, is characterized in that, describedly according to described pre-switch channel number, obtains the first configuration parameter, comprising:
Obtain the first temperature of current collection, and obtain the look-up table corresponding with described the first temperature, wherein, described look-up table comprises the mapping relations of channel number and configuration parameter;
Inquire about look-up table corresponding to described the first temperature, obtain first configuration parameter corresponding with described pre-switch channel number.
4. the processing method of wavelength according to claim 3, is characterized in that, also comprises:
Described MCU, every the scheduled time, gathers the second temperature, and obtains the look-up table corresponding with described the second temperature;
Described MCU searches look-up table corresponding to described the second temperature, obtains second configuration parameter corresponding with described current channel number;
Described MCU, is generated the 3rd corresponding dbr current and also outputs on described laser according to described the second configuration parameter by IDAC corresponding to described current wave band.
5. the processing method of wavelength according to claim 1, is characterized in that, described that IDAC corresponding to described current wave band is switched to IDAC that described pre-switch wave band is corresponding is upper, comprising:
Output control signal is to selector, for described selector, receiving after described control signal, the first passage of setting up is being switched to the second channel of setting up between described laser and IDAC corresponding to described pre-switch wave band between described laser and IDAC corresponding to described current wave band.
6. the processing method of wavelength according to claim 1, is characterized in that, IDAC corresponding to described current wave band is used for meeting range demand; IDAC corresponding to described pre-switch wave band is used for meeting accuracy requirement; Or,
IDAC corresponding to described pre-switch wave band is used for meeting accuracy requirement; IDAC corresponding to described current wave band is used for meeting range demand.
7. a processing unit for wavelength, is characterized in that, comprising:
Receiver module, for receiving switching command, described switching command comprises pre-switch channel number;
Configuration parameter acquisition module, for according to described pre-switch channel number, obtains the first configuration parameter;
IDAC acquisition module, if not identical for the current wave band pre-switch wave band corresponding with described pre-switch channel number, obtains the IDAC corresponding with described pre-switch wave band;
Laser process module, for after described IDAC acquisition module gets the IDAC corresponding with described pre-switch wave band, closes laser;
Hand-off process module, for after described laser process module is closed described laser, IDAC corresponding current wave band is switched to the IDAC that described pre-switch wave band is corresponding upper, and described the first configuration parameter is configured on the IDAC that described pre-switch wave band is corresponding;
Current processing module, for after described hand-off process module is configured on the IDAC that described pre-switch wave band is corresponding by described the first configuration parameter, trigger IDAC corresponding to described pre-switch wave band, make it according to described the first configuration parameter, generate the first corresponding dbr current and output on described laser;
Described laser process module also, for after described current processing module outputs to described laser by described the first dbr current, is opened laser, to make described laser according to the wavelength of described the first dbr current control output.
8. the processing unit of wavelength according to claim 7, it is characterized in that, if described current processing module is also identical with described pre-switch wave band for described current wave band, by IDAC corresponding to current wave band according to described the first configuration parameter, generate the second corresponding dbr current and also output on described laser.
9. according to the processing unit of the wavelength described in claim 7 or 8, it is characterized in that, described configuration parameter acquisition module is specifically for obtaining the first temperature of current collection, and obtain the look-up table corresponding with described the first temperature, wherein, described look-up table comprises the mapping relations of channel number and configuration parameter; Inquire about look-up table corresponding to described the first temperature, obtain first configuration parameter corresponding with described pre-switch channel number.
10. the processing unit of wavelength according to claim 9, is characterized in that, described configuration parameter acquisition module also, for every the scheduled time, gathers the second temperature, and obtains the look-up table corresponding with described the second temperature; Search look-up table corresponding to described the second temperature, obtain second configuration parameter corresponding with described current channel number;
Described current processing module also for by IDAC corresponding to described current wave band according to described the second configuration parameter, generate the 3rd corresponding dbr current and also output on described laser.
The processing unit of 11. wavelength according to claim 7, it is characterized in that, described hand-off process module is specifically for exporting control signal to selector, for described selector, receiving after described control signal, the first passage of setting up between described laser and IDAC corresponding to described current wave band is switched to the second channel of setting up between described laser and IDAC corresponding to described pre-switch wave band, and described the first configuration parameter is configured on the IDAC that described pre-switch wave band is corresponding.
The treatment system of 12. 1 kinds of wavelength, is characterized in that, comprising: MCU and laser, and wherein, described MCU is the processing unit of the wavelength as described in as arbitrary in claim 7 to 11;
Described laser is for receiving the dbr current of described MCU output, and the wavelength of exporting according to described dbr current control.
The treatment system of 13. wavelength according to claim 12, it is characterized in that, also comprise: selector, be connected with described laser with described MCU respectively, the control signal sending for receiving described MCU, and according to described control signal, between described laser and IDAC corresponding to described pre-switch wave band, set up passage, with the dbr current that makes the IDAC output that described pre-switch wave band is corresponding, by described passage, output on described laser.
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| CN201410024847.3A CN103763036B (en) | 2014-01-20 | 2014-01-20 | The processing method of wavelength, device and system |
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| WO2015172279A1 (en) * | 2014-05-12 | 2015-11-19 | 华为技术有限公司 | Wavelength switching method, device and system |
| CN109217927A (en) * | 2018-09-14 | 2019-01-15 | 南京邮电大学 | Link switching method based on anticipation information in indoor optical communication system |
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| CN109217927B (en) * | 2018-09-14 | 2021-08-10 | 南京邮电大学 | Link switching method based on prejudgment information in indoor optical communication system |
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