CN103929170A - Multichannel parallel optical module starting method - Google Patents
Multichannel parallel optical module starting method Download PDFInfo
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- CN103929170A CN103929170A CN201410139047.6A CN201410139047A CN103929170A CN 103929170 A CN103929170 A CN 103929170A CN 201410139047 A CN201410139047 A CN 201410139047A CN 103929170 A CN103929170 A CN 103929170A
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Abstract
The invention discloses a starting method of a multichannel parallel optical module, which comprises the following steps: (1) acquiring a laser temperature value, searching the optimal configuration parameter of the laser under the current temperature value in a lookup table, and storing and updating; (2) judging whether the power is electrified for the first time, if so, executing the step (3); (3) configuring laser parameters by using the minimum value, and storing the laser parameters in a laser driver register; (4) increasing and updating the configuration parameters stored in the laser driver register according to the step delta I1; (5) and comparing the current configuration parameter with the optimal configuration parameter, and if the current configuration parameter is smaller than the optimal configuration parameter, returning to the step (4). According to the starting method of the multichannel parallel optical module, all channel lasers are configured by using the minimum value, and then the laser parameters are gradually configured to be optimal values in an increasing mode, so that the requirement of a power-on time sequence is met, and the damage of power-on surge to the lasers is avoided.
Description
Technical field
The invention belongs to technical field of optical fiber communication, specifically, relate to a kind of starting method of multi-channel parallel optical module.
Background technology
Fibre Optical Communication Technology is applied in various adverse circumstances and highly reliable system more and more, along with the transmission rate of optical module is more and more higher, parallel port number is more and more simultaneously, when optical module powers on, the mode that employing powers on by passage, also by passage, be laser configurations laser parameter, and be once configured as the mode that powers on of optimal value, adopt the above-mentioned mode that powers on, can only be applicable to comprising at present the parameter configuration of the optical module of maximum 12 passages, when optical module comprises more multichannel, if adopt the words of existing parameter configuration mode, can cause the electric current of powered on moment excessive, the formation surge that powers on, damage components and parts and laser.
In addition, if adopting the current mode that powers on is the power on words of mode of multichannel (more than 12 passages) optical module by passage, power-on time can be long, can not meet and start all luminous electrifying timing sequence requirements of all passages in the time limit, can not meet in the industry cycle all luminous electrifying timing sequence requirements of interior all passages of startup time limit of standard-required.
Summary of the invention
The present invention, in order to solve existing the problems referred to above, the invention provides a kind of multi-channel parallel optical module starting method.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A multi-channel parallel optical module starting method, comprises the following steps:
(1), obtain laser temperature value, in look-up table, search the allocation optimum parameter of laser under current temperature value and preserve to upgrade;
(2), judge whether to power on for the first time, if so, execution step (3);
(3), use minimum value configures laser parameter, and is kept in laser driver register;
(4), by being stored in configuration parameter in laser driver register, according to stride △ I1, increasing and upgrade storage;
(5), current configuration parameter is compared with allocation optimum parameter,, if current configuration parameter is less than allocation optimum parameter, return to step (4).
Further, after current configuration parameter value is increased to allocation optimum parameter in step (5), also comprise the step of real-time fine setting configuration parameter, return to step (1) and step (2), in step (2), can draw and not be the conclusion that powers on for the first time, continue to carry out following steps:
(6), current configuration parameter is compared with allocation optimum parameter,, if current configuration parameter is greater than allocation optimum parameter, configuration parameter is reduced according to stride △ I2 and upgrade storage; If current configuration parameter is less than allocation optimum parameter, configuration parameter is increased according to stride △ I3 and upgrade storage.
Further, stride △ I2 equates with stride △ I3.
Further, stride △ I2 and stride △ I3 are all less than stride △ I1.
Further again, laser described in step (1) comprises generating laser and laser pickoff, described laser driver comprises that several Laser emission drive chip and several laser pick-ofves to drive chip, each Laser emission drives at least one road of chip drives generating laser, each laser pick-off drives at least one road of chip drives laser pickoff, described step (1) is to step (5), for the order of each laser configurations parameter, be to be first generating laser configuration parameter one by one, after be laser pickoff configuration parameter one by one.
Further, when comprising two or more Laser emission driving chip, described two or more Laser emission drive chip forked workings, also:
The first via generating laser first all Laser emission driving chips being driven is configuration parameter one by one, then all Laser emission are driven to No. second generating laser that chips drive configuration parameter one by one, until be that all generating laser configuration parameter is complete.
Further, when comprising two or more laser pick-ofves driving chip, described two or more laser pick-ofves drive chip forked workings, also:
The first via laser pickoff first all laser pick-ofves driving chips being driven is configuration parameter one by one, then all laser pick-ofves are driven to No. second laser pickoff that chips drive configuration parameter one by one, until be that all laser pickoff configuration parameter is complete.
Further, the look-up table described in step (1), is by experiment, to detect each laser corresponding running parameter at varying environment temperature to make, and is stored in memory.
Further, in described look-up table, store limited discrete temperature value, and the configuration parameter corresponding with this temperature value, while not being worth corresponding configuration parameter with obtained laser temperature in look-up table, find out in look-up table and be worth two nearest temperature values with this laser temperature, utilize linear algorithm to calculate the configuration parameter of laser temperature.
Compared with prior art, advantage of the present invention and good effect are: the starting method of multi-channel parallel optical module of the present invention, first use minimum value to be configured all passage lasers, then adopting the mode collocation in successive steps laser parameter increasing progressively is optimal value, so both met electrifying timing sequence requirement, the damage of surge to laser of having avoided again powering on, after optical module powers on, still implement to be worth corresponding adjustment configuration parameter according to laser temperature, laser is remained under optimum operating state always.Electrifying timing sequence adopts the preferential mode that powers on of transmitting, meets the luminous requirement of optical module requirement, adopts laser driving chip to intersect and powers on, and has alleviated the upper Voltage force of laser driving chip.
Read by reference to the accompanying drawings after the detailed description of embodiment of the present invention, it is clearer that the other features and advantages of the invention will become.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the flow chart of a kind of embodiment of multi-channel parallel optical module starting method proposed by the invention;
Fig. 2 is a kind of curve chart that passes through linear gradient matching generation temperature-electric current of embodiment;
Fig. 3 is the generation temperature-current curve diagram of pointwise sampling.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment mono-, shown in Figure 1, the invention provides a kind of multi-channel parallel optical module starting method, comprises the following steps:
S1, obtain laser temperature value, in look-up table, search the allocation optimum parameter of laser under current temperature value and preserve and upgrade;
S2, judge whether to power on for the first time, if so, perform step S3;
S3, use minimum value configuration laser parameter, and be kept in laser driver register;
S4, by being stored in configuration parameter in laser driver register, according to stride △ I1, increasing and upgrade storage;
S5, current configuration parameter is compared with allocation optimum parameter, if current configuration parameter is less than allocation optimum parameter, return to step S4.
The multi-channel parallel optical module starting method of the present embodiment, by setting steps S3 and step S4, first use minimum value to be configured all passage lasers, then adopt the mode progressively increasing progressively according to stride △ I1, the configuration parameter being stored in laser driver register is progressively increased to optimal value, all luminous electrifying timing sequence requirements of interior all passages of startup time limit that industrywide standard requires had so both been met, avoided again because optimum configuration current parameters is higher than the minimum value in the present embodiment, if multichannel is directly configured as to the words of optimized parameter, can cause electric current excessive, produce the damage of surge to laser, the multichannel starting method safety of the present embodiment, reliably, especially the super multichannel clean boot being applicable to more than 12 passages is controlled.
Wherein, minimum value configuration laser parameter is definite by testing, need to meet minimum value configuration laser parameter can not be too large, otherwise while causing starting, produce surge, components and parts in circuit are caused to damage, again can not be too little, otherwise cause because initial value is too little starting, reach allocation optimum parameter overlong time, can not meet the requirement that starts the time limit.Therefore, minimal configuration laser parameter value need at least meet above two conditions.In addition, stride △ I1 also needs to be set in a rational scope, according to remaining, can meet the requirement that optical module starts the time limit, again can not stride excessive, causes sharply increasing generation surge from minimum value configuration laser parameter.
As a preferred embodiment, after current configuration parameter value is increased to allocation optimum parameter in step S5, also comprise the step of real-time fine setting configuration parameter, return to step S1 and step S2, in step S2, can draw and not be the conclusion that powers on for the first time, continue to carry out following steps:
S6, current configuration parameter is compared with allocation optimum parameter, if current configuration parameter is greater than allocation optimum parameter, configuration parameter is reduced according to stride △ I2 and upgrade storage; If current configuration parameter is less than allocation optimum parameter, configuration parameter is increased according to stride △ I3 and upgrade storage.
Because step S6 is the process of configuration parameter fine setting, in trim process, occur that fine setting increases or fine setting reduces, therefore, preferably stride △ I2 equates with stride △ I3, no matter it is finely tuned and increase or fine setting reduces all to adopt identical amplitude, reduce inconvenience when arranging.
In addition, because the prerequisite of the step S6 configuration parameter that is laser has reached the allocation optimum parameter of a upper time detecting, then the allocation optimum parameter detecting according to current time is carried out inching, therefore, adjusts accordingly stride △ I2 and stride △ I3 is all less than stride △ I1.
Laser described in step S1 comprises generating laser and laser pickoff, described laser driver comprises that several Laser emission drive chip and several laser pick-ofves to drive chip, each Laser emission drives at least one road of chip drives generating laser, each laser pick-off drives at least one road of chip drives laser pickoff, described step S1 is to step S5, for the order of each laser configurations parameter, be to be first generating laser configuration parameter one by one, after be laser pickoff configuration parameter one by one.Because the start-up time of generating laser is long compared with the time of laser pickoff, electroluminescence on all generating lasers, can think that optical module has started.
Preferably, when comprising two or more Laser emission driving chip, described two or more Laser emission drive chip forked workings, also:
The first via generating laser first all Laser emission driving chips being driven is configuration parameter one by one, then all Laser emission are driven to No. second generating laser that chips drive configuration parameter one by one, until be that all generating laser configuration parameter is complete.
Adopt above-mentioned configuration mode, Laser emission drives chip forked working, rather than control all roads that arbitrary Laser emission drives chip configuration parameter one by one continuously, and can play the effect that further alleviation Laser emission drives chip operation pressure, be conducive to postpone its useful life.
As a same reason, when comprising two or more laser pick-ofves driving chip, described two or more laser pick-ofves drive chip forked workings, also:
The first via laser pickoff first all laser pick-ofves driving chips being driven is configuration parameter one by one, then all laser pick-ofves are driven to No. second laser pickoff that chips drive configuration parameter one by one, until be that all laser pickoff configuration parameter is complete.
To comprise 2 Laser emission, drive chip and 2 laser pick-ofves to drive chip below, the optical module of totally 48 passages is that example describes.
First, this requirement that includes the optical module power-on time of 48 passages can meet the standard of standard channel product, is generally 2 seconds.
Four chips comprise:
Laser emission drives chip 1 Tx1(to drive the transmitting of front 12 passage generating lasers);
The transmitting of 12 passage generating lasers after Laser emission drives chip 2 Tx2(to drive);
Laser pick-off drives chip 1 Rx1(to drive the reception of front 12 passage laser pickoffs);
The reception of 12 passage laser pickoffs after laser pick-off drives chip 2 Rx2(to drive);
Total powering method is: transmitting is preferential, and electric sequence starts according to first generating laser, the Starting mode of rear laser pickoff startup, and reason is the seeking time of wanting of 2 seconds, being generally that all passages are all luminous ends up being cut-off.
Two Laser emission drive chip to intersect and power on, by passage, power on, progressively slowly power on, also, electric sequence is: the passage 12 of the passage 12->Tx2 of the passage 2->...Tx1 of the passage 2->Tx2 of the passage 1->Tx1 of the passage 1->Tx2 of Tx1.
Look-up table described in step S1, is by experiment, to detect each laser corresponding running parameter at varying environment temperature to make, and is stored in memory.
In described look-up table, store limited discrete temperature value, and the configuration parameter corresponding with this temperature value, while not being worth corresponding configuration parameter with obtained laser temperature in look-up table, find out in look-up table and be worth two nearest temperature values with this laser temperature, utilize linear algorithm to calculate the configuration parameter of laser Current Temperatures.
Shown in Fig. 2, Fig. 3, when Fig. 2 puts for choosing 10Ge circle, the curve chart that non-boundary's point generates by linear gradient matching, Fig. 3 is the curve chart of pointwise sampling, and transverse axis is laser temperature value T, and the longitudinal axis is the current value I of parameter, known by Fig. 2, Fig. 3, both curve tendencies are basic identical.Therefore the look-up table precision, adopting in the present embodiment is higher.Wherein, the B1 in Fig. 2, Fig. 3 represents the bias current parameter of configuration parameter, and M1 represents the modulated current parameter in configuration parameter, and these two parameter Stimulated Light actuator temperatures have the greatest impact, and in modulation configuration parametric procedure, often above-mentioned two parameters is modulated.
Certainly; above-mentioned explanation is not limitation of the present invention; the present invention is also not limited in above-mentioned giving an example, and the variation that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement, also should belong to protection scope of the present invention.
Claims (9)
1. a multi-channel parallel optical module starting method, is characterized in that, comprises the following steps:
(1), obtain laser temperature value, in look-up table, search the allocation optimum parameter of laser under current temperature value and preserve to upgrade;
(2), judge whether to power on for the first time, if so, execution step (3);
(3), use minimum value configures laser parameter, and is kept in laser driver register;
(4), by being stored in configuration parameter in laser driver register, according to stride △ I1, increasing and upgrade storage;
(5), current configuration parameter is compared with allocation optimum parameter,, if current configuration parameter is less than allocation optimum parameter, return to step (4).
2. multi-channel parallel optical module starting method according to claim 1, it is characterized in that, after in step (5), current configuration parameter value is increased to allocation optimum parameter, the step that also comprises real-time fine setting configuration parameter, return to step (1) and step (2), in step (2), can draw and not be the conclusion that powers on for the first time, continue to carry out following steps:
(6), current configuration parameter is compared with allocation optimum parameter,, if current configuration parameter is greater than allocation optimum parameter, configuration parameter is reduced according to stride △ I2 and upgrade storage; If current configuration parameter is less than allocation optimum parameter, configuration parameter is increased according to stride △ I3 and upgrade storage.
3. multi-channel parallel optical module starting method according to claim 2, is characterized in that, stride △ I2 equates with stride △ I3.
4. multi-channel parallel optical module starting method according to claim 2, is characterized in that, stride △ I2 and stride △ I3 are all less than stride △ I1.
5. according to the multi-channel parallel optical module starting method described in claim 1-4 any one claim, it is characterized in that, laser described in step (1) comprises generating laser and laser pickoff, described laser driver comprises that several Laser emission drive chip and several laser pick-ofves to drive chip, each Laser emission drives at least one road of chip drives generating laser, each laser pick-off drives at least one road of chip drives laser pickoff, described step (1) is to step (5), for the order of each laser configurations parameter, be to be first generating laser configuration parameter one by one, after be laser pickoff configuration parameter one by one.
6. multi-channel parallel optical module starting method according to claim 5, is characterized in that, when comprising two or more Laser emission driving chip, described two or more Laser emission drive chip forked workings, also:
The first via generating laser first all Laser emission driving chips being driven is configuration parameter one by one, then all Laser emission are driven to No. second generating laser that chips drive configuration parameter one by one, until be that all generating laser configuration parameter is complete.
7. multi-channel parallel optical module starting method according to claim 6, is characterized in that, when comprising two or more laser pick-ofves driving chip, described two or more laser pick-ofves drive chip forked workings, also:
The first via laser pickoff first all laser pick-ofves driving chips being driven is configuration parameter one by one, then all laser pick-ofves are driven to No. second laser pickoff that chips drive configuration parameter one by one, until be that all laser pickoff configuration parameter is complete.
8. multi-channel parallel optical module starting method according to claim 7, is characterized in that, the look-up table described in step (1) is by experiment, to detect each laser corresponding running parameter at varying environment temperature to make, and is stored in memory.
9. multi-channel parallel optical module starting method according to claim 8, it is characterized in that, in described look-up table, store limited discrete temperature value, and the configuration parameter corresponding with this temperature value, while not being worth corresponding configuration parameter with obtained laser temperature in look-up table, find out in look-up table and be worth two nearest temperature values with this laser temperature, utilize linear algorithm to calculate the configuration parameter value of laser temperature value.
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| CN107612615A (en) * | 2017-09-15 | 2018-01-19 | 中航海信光电技术有限公司 | Parallel optical module optical power calibration method and system |
| CN117526080A (en) * | 2024-01-08 | 2024-02-06 | 合肥金星智控科技股份有限公司 | Laser and control protection circuit thereof |
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Address after: 266100 Songling Road, Laoshan District, Qingdao, Shandong Province, No. 399 Patentee after: Qingdao Xinghang Photoelectric Technology Co.,Ltd. Address before: 266104 Beizhai sub district office, beizhaike community, Laoshan District, Qingdao City, Shandong Province Patentee before: HISENSE & JONHON OPTICAL-ELECTRICAL TECHNOLOGIES Co.,Ltd. |