CN106230501A - Laser diode launches optical power adjusting method, Apparatus and system - Google Patents
Laser diode launches optical power adjusting method, Apparatus and system Download PDFInfo
- Publication number
- CN106230501A CN106230501A CN201610628619.6A CN201610628619A CN106230501A CN 106230501 A CN106230501 A CN 106230501A CN 201610628619 A CN201610628619 A CN 201610628619A CN 106230501 A CN106230501 A CN 106230501A
- Authority
- CN
- China
- Prior art keywords
- value
- laser diode
- optical power
- datum
- transmitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/564—Power control
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Semiconductor Lasers (AREA)
Abstract
The present invention relates to a kind of laser diode and launch optical power adjusting method, Apparatus and system.Wherein, launching optical power value is to measure to draw after APC circuit is according to the bias current of the value regulation laser diode after datum renewal.Simultaneously, time outside the transmitting optical power value judging laser diode is in target zone, the updated value of datum that target light power is corresponding can be drawn according to the first dependency and update the value of datum, then circulation performs until launching within optical power value is in target zone successively.Therefore, during circulation performs every time, the updated value being all based on datum corresponding to target light power to be controlled the transmitting luminous power of laser diode by APC circuit, drive circuit, if circulation primary, the transmitting optical power adjustment of laser diode just can be made near target light power, it is thus possible to avoid the occurrence of the transmitting luminous power situation much larger than target light power of laser diode, improve the safety of regulation.
Description
Technical field
The present invention relates to technical field of optical fiber communication, particularly relate to a kind of laser diode and launch optical power adjustment side
Method, Apparatus and system.
Background technology
Fiber optic communication is to utilize optical fiber to transmit the light wave of the information of carrying to reach the purpose of communication, and other means of communication
Comparing, fiber optic communication is big with message capacity, repeater span length, security performance are good, adaptable, low price and be easy to safeguard
Etc. advantage, have become as the inevitable choice of the communications field.Either backbone network, Metropolitan Area Network (MAN), or access network, in optical sender
All need to use transmitting light source, such as laser diode (Laser Diode, LD).The optical fiber telecommunications system requirement to launching light source
Have: it is moderate that (1) launches wavelength, be conducive to transmitting in a fiber；(2) luminous power is launched sufficiently large；(3) temperature characterisitic to be got well, i.e.
It is influenced by temperature little；(4) emission spectrum is narrow, is beneficial to reduce dispersion；(5) working life to be grown.Laser diode is due to can
Well meet above-mentioned requirements, obtain relatively broad application the most in fiber optic communication systems.
But, according to the industry technology protocol requirement that optical fiber telecommunications system is relevant, at type, the reception light of laser diode
In the case of electrical part type and application scenarios difference, laser diode is launched luminous power should different requirements mutually.Cause
This, every kind of optical sender is required for that laser diode is launched luminous power and carries out the power adjustments of each power shelves, to meet
The requirement to launching light source light power of the different optical fiber telecommunications systems.Two way classification control method is more commonly use a kind of traditional
Launch optical power adjusting method, but the driving electric current that the method is easy to occur making laser diode during regulation is bigger
And the transmitting luminous power of laser diode is considerably beyond the situation of target light power, safety is relatively low.
Summary of the invention
Based on this, it is necessary to the problem relatively low for how improving two way classification control method safety, it is provided that a kind of laser
Diode emitter optical power adjusting method, Apparatus and system.
A kind of laser diode launches optical power adjusting method, is used for controlling APC circuit；Described APC circuit is by driving
Circuit is connected with laser diode, and described APC circuit is also connected with photodiode；Described laser diode launches luminous power
Control method includes:
The initial value of datum in APC circuit is set；Described datum is for supplying described APC circuit monitoring by described
The back facet current of photodiode output is the most stable；
Receive the transmitting optical power value of described laser diode；Described transmitting optical power value be described APC circuit according to
After the bias current of the value described laser diode of regulation after the renewal of described datum, measurement draws；
Judge when described transmitting optical power value is in outside target zone, according to described datum and described laser two pole
The first dependency having between the transmitting luminous power of pipe, draws the updated value of the described datum that target light power is corresponding also
Update the value of described datum, be further continued for performing to receive the step launching optical power value of described laser diode, until institute
Till stating transmitting optical power value being within target zone.
Wherein in an embodiment, have according between the transmitting luminous power of described datum and described laser diode
The first dependency having, draws the updated value of the described datum that target light power is corresponding and updates described datum
Value, is further continued for performing to receive the step launching optical power value of described laser diode, until described transmitting optical power value is in
Step till within target zone includes:
Obtain the first dependency having between described transmitting luminous power and described datum；
Draw the updated value of described datum that target light power is corresponding according to described first dependency and update described
The value of datum, is further continued for performing to receive the step launching optical power value of described laser diode, until described transmitting light
Till performance number is within target zone.
Wherein in an embodiment, obtain first had between described transmitting luminous power and described datum relevant
The step of property includes:
Obtain the second dependency having between described back facet current and described datum；
Obtain the ratio numerical constant having between described transmitting luminous power and described back facet current.
Wherein in an embodiment, draw, according to described first dependency, the described datum that target light power is corresponding
Updated value and update the value of described datum, be further continued for performing to receive the step launching optical power value of described laser diode
Suddenly, the step till described transmitting optical power value is within target zone includes:
By described target light power divided by described the first updated value drawing described back facet current than numerical constant；
The first updated value according to described second dependency and described back facet current show that described target light power is corresponding
The updated value of described datum also updates the value of described datum, is further continued for the transmitting performing to receive described laser diode
The step of optical power value, till described transmitting optical power value is within target zone.
Wherein in an embodiment, obtain the ratio numerical constant having between described transmitting luminous power and described back facet current
Step include:
After updating according to described second dependency and described datum worth go out described back facet current the second renewal
Value；
Described transmitting optical power value is drawn divided by the second updated value of described back facet current and described compares numerical constant.
Wherein in an embodiment, described transmitting optical power value is drawn divided by the second updated value of described back facet current
Described also include than before the step of numerical constant:
Described transmitting optical power value is converted to absolute value by relative value.
Wherein in an embodiment, described second dependency is: Im=H*2(APCSET_DAC/32)；Wherein, ImFor the described back of the body
Photoelectric current；H is constant；APCSET_DAC is described datum.
Wherein in an embodiment, the step launching optical power value receiving described laser diode is:
The transmitting optical power value of the described laser diode of received optical power measurement amount.
A kind of laser diode launches optical power adjusting regulating device, is used for controlling APC circuit；Described APC circuit is by driving
Circuit is connected with laser diode, and described APC circuit is also connected with photodiode；Described laser diode launches luminous power
Adjusting means includes:
Datum initial value arranges module, for arranging the initial value of the datum of APC circuit；Described datum
Back facet current for exporting by described photodiode for described APC circuit monitoring is the most stable；
Launch optical power value receiver module, for receiving the transmitting optical power value of described laser diode；Described transmitting light
After performance number is the bias current that the value after described APC circuit updates regulates described laser diode according to described datum
Measurement draws；
Judge module, is used for judging when described transmitting optical power value is in outside target zone, according to described laser two pole
The first dependency having between transmitting luminous power and the described datum of pipe, draws the described reference that target light power is corresponding
The updated value of level also updates the value of described datum, is further continued for by described transmitting optical power value receiver module, judge module
Perform respective running successively, till described transmitting optical power value is within target zone.
A kind of laser diode launches optical power adjustment system, including laser diode transmitter module, light power meter and tune
Joint main controller；Described laser diode transmitter module includes drive circuit, laser diode, photodiode and APC circuit；Institute
State drive circuit to be connected with described laser diode, described APC circuit respectively；Described APC circuit also with described photodiode
Connect；Described light power meter is connected with the light mouth of described laser diode；
Described regulation main controller is connected with described light power meter, described APC circuit respectively；Described regulation main controller is used for holding
Laser diode described in row claim 1 launches optical power adjusting method.
Above-mentioned laser diode launches optical power adjusting method, Apparatus and system has the beneficial effect that transmitting light merit
Rate value is to measure to draw after APC circuit is according to the bias current of the value regulation laser diode after datum renewal, therefore
As long as after setting the value of datum, laser two pole can be controlled accordingly by drive circuit under the regulation effect of APC circuit
The transmitting luminous power of pipe.It addition, time outside the transmitting optical power value judging laser diode is in target zone, according to first
Dependency can draw the updated value of the datum that target light power is corresponding and update the value of datum, then circulation is held successively
Row is until launching within optical power value is in target zone.Therefore, during circulation performs every time, it is all based on target light merit
The updated value of the datum that rate is corresponding to be controlled the transmitting luminous power of laser diode by APC circuit, drive circuit, as long as
Circulation primary, just can make the transmitting optical power adjustment of laser diode near target light power such that it is able to avoid the occurrence of sharp
The transmitting luminous power of optical diode, much larger than the situation of target light power, improves the safety of regulation.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
The accompanying drawing of other embodiments is obtained according to these accompanying drawings.
Fig. 1 launches the flow chart of optical power adjusting method for the laser diode that an embodiment provides；
Fig. 2 is the one of which particular flow sheet of the laser diode transmitting optical power adjusting method of embodiment illustrated in fig. 1；
Fig. 3 is the another kind of particular flow sheet of the laser diode transmitting optical power adjusting method of embodiment illustrated in fig. 1；
Fig. 4 is the one of which particular flow sheet of step S412 in embodiment illustrated in fig. 3；
Fig. 5 is the structured flowchart that the laser diode corresponding with embodiment illustrated in fig. 1 launches optical power adjusting regulating device；
Fig. 6 is the structured flowchart that the laser diode corresponding with embodiment illustrated in fig. 1 launches optical power adjustment system；
Fig. 7 is the structured flowchart of laser diode transmitter module in embodiment illustrated in fig. 6.
Detailed description of the invention
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.In accompanying drawing
Give presently preferred embodiments of the present invention.But, the present invention can realize in many different forms, however it is not limited to institute herein
The embodiment described.On the contrary, providing the purpose of these embodiments is to make the understanding to the disclosure more thorough
Comprehensively.
Unless otherwise defined, the skill of all of technology used herein and scientific terminology and the technical field belonging to invention
The implication that art personnel are generally understood that is identical.Term used in the description in invention is intended merely to describe concrete herein
The purpose of embodiment, it is not intended that limit the present invention.Term as used herein "and/or" includes one or more relevant institute
Arbitrary and all of combination of list of items.
One embodiment provides a kind of laser diode and launches optical power adjusting method, is used for controlling APC circuit 240.Its
In, APC circuit 240 is connected with laser diode 220 by drive circuit 210, and APC circuit 240 also with photodiode 230
Connect, as shown in Figure 7.Wherein, drive circuit 210 is equivalent to high-speed current switch, is used for driving laser diode 220 luminous.
APC circuit 240 realizes closed loop control by the back facet current that sense photodiode 230 exports, thus by regulation laser
The bias current of diode 220 is stable with the average light power keeping laser diode 220.
The laser diode that the present embodiment provides is launched optical power adjusting method and can be performed by intelligent terminal such as computers.
As it is shown in figure 1, the execution step of the method includes herein below.
Step S100. arranges the initial value of datum in APC circuit 240.Wherein, datum is for for APC circuit
The back facet current that 240 monitorings are exported by photodiode 230 is the most stable.
It is to say, datum is used to judge the reference value that back facet current is the most stable.Such as, datum is permissible
Being the reference voltage of one input of integrated transporting discharging inputted to APC circuit 240, APC circuit 240 is by backlight electricity simultaneously
Circulation is changed to corresponding DC voltage, and inputs another input to integrated transporting discharging, and integrated transporting discharging can be according to directly afterwards
Stream voltage and reference voltage and export corresponding comparative result, then be amplified by the amplifier being correlated with in APC circuit 240,
The bias current of the most exportable feedback, thus form a negative feedback loop.Wherein, datum can be in the way of a depositor
Deposit.
Therefore, having performed this step, APC circuit 240 can regulate laser for the first time by the initial value of datum
The bias current of diode 220, and then under the driving of drive circuit 210 so that after laser diode 220 is with regulation for the first time
Transmitting luminous power launch.
Step S200. receives the transmitting optical power value of laser diode 220.Wherein, launching optical power value is at APC circuit
240 update according to datum after value regulation laser diode 220 bias current after measure and draw.
The value of datum often updates once, all can the transmitting optical power value of a correspondingly received laser diode 220.That
, after the initial value of datum sets, APC circuit 240, drive circuit 210 control under i.e. can be swashed accordingly
First transmitting optical power value of optical diode 220.
Concrete, step S200 is: the transmitting optical power value of the laser diode 220 that received optical power meter 100 is measured.As
Shown in Fig. 6, light power meter 100 carrys out the transmitting optical power value of Laser Measurement diode 220 by optical fiber.
Within step S300. judges whether above-mentioned transmitting optical power value is in target zone, if so, terminate；Otherwise, perform
Step S400.
Wherein, target zone can be to launch the absolute value of difference between optical power value and target light performance number to be less than a certain
The region that setting value is corresponding, setting value for example, 0.1dB.So, in step S300, first calculate and launch optical power value and mesh
The absolute value of difference between mark optical power value, then judges that this absolute value whether less than setting value, the most then judges to launch light merit
Within rate value is in target zone, i.e. the transmitting luminous power of laser diode 220 is in steady statue without regulation；Otherwise judge
The transmitting optical power value of laser diode 220 is in outside target zone, i.e. the transmitting luminous power of laser diode 220 is in non-
Steady statue, needs to be adjusted.
Step S400. according to the first dependency having between the transmitting luminous power of datum and laser diode 220,
Draw the updated value of the datum that target light power is corresponding and update the value of datum.Afterwards, continue to open from step S200
Begin to circulate and perform, till transmitting optical power value is within target zone.
Wherein, the first dependency refers to launch the dependency having between luminous power and datum, by APC circuit 240,
Drive circuit 210, laser diode 220 and the structure of photodiode 230 and performance and determine, can be obtained by many experiments data
Go out.Therefore, on the basis of the first dependency, target light power determine, the reference electricity corresponding with target light power can be drawn
Flat updated value, and utilize the updated value of this datum to update the value of datum, i.e. complete to datum more
Newly.Afterwards, APC circuit 240 continue through datum update after value to regulate the bias current of laser diode 220, from
And make the transmitting luminous power of laser diode 220 close to target light power.Circulate successively, until launching optical power value to be in mesh
Till within the scope of mark.
Therefore, the above-mentioned laser diode that the present embodiment provides launches optical power adjusting method in circulation execution process every time
In, the updated value being all based on datum corresponding to target light power to control to swash by APC circuit 240, drive circuit 210
The transmitting luminous power of optical diode 220, as long as circulation primary, just can make the transmitting optical power adjustment of laser diode 220 to mesh
Near mark luminous power such that it is able to avoid the occurrence of the transmitting luminous power situation much larger than target light power of laser diode 220,
Improve the safety of regulation, with the satisfied batch production requirement to product quality reliability.
Concrete, as in figure 2 it is shown, step S400 specifically includes herein below.
Step S410. obtains the first dependency having between above-mentioned transmitting luminous power and datum.
So, time only outside judgement transmitting optical power value is in set point, step S410 is just performed.And judging
Launch optical power value when being within set point, be then performed without step S410 such that it is able to avoid performing unnecessary step
With the efficiency of the transmitting luminous power of impact regulation laser diode 220, therefore said method improves regulation efficiency.
Step S420. draws the updated value of datum that target light power is corresponding according to above-mentioned first dependency and updates
The value of datum.Afterwards, continue to start the cycle over execution from step S200, until within transmitting optical power value is in target zone
Till.
It is understood that the concrete executive mode of step S400 is not limited to above-mentioned a kind of situation, as long as can be according to the
One dependency updates the value of datum.Such as, according to practical situation, it is also possible to step S410 is placed on step S300
Perform before.
Concrete, as it is shown on figure 3, the concrete executive mode of step S410 comprises the following steps.
Step S411. obtains the second dependency having between back facet current and datum.
Step S412. obtains launches the ratio numerical constant having between luminous power and back facet current.
Wherein, the second dependency determines with being all the character by circuit structure self than numerical constant, all can be by repeatedly
Experimental data draws.Concrete, the second dependency is: Im=H*2(APCSET_DAC/32), wherein, ImFor back facet current, H is constant,
APCSET_DAC is datum, and the second dependency is constant under normal circumstances.Main by laser diode than numerical constant
Inherent character between 220 and photodiode 230 determines, is steady state value under normal circumstances.
In the present embodiment, the concrete implementation status of step S412 is as follows, refer to Fig. 4.
Step S4121. update according to above-mentioned second dependency and datum after worth go out back facet current second more
New value.
Value after every time datum updates in cyclic process be all in last cyclic process by the renewal of step S420 after
Value, in addition to first time cyclic process refers to the initial value of datum.Such as, during performing for the first time, can
Directly to bring the initial value of datum into formula Im=H*2(APCSET_DAC/32)In, in i.e. available cyclic process for the first time
Second updated value of back facet current.
If the output valve directly measuring photodiode 230 obtains back facet current, it is understood that there may be measurement error.And this reality
Executing in example, owing to the second dependency is determined by circuit structure, and the value after datum renewal is calculated, and these are two years old
Individual data are exact value, and the value after therefore being updated by the second dependency and datum draws back facet current, it is possible to keep away
Exempt from because of the interference of the inaccurate equal error of measuring instrument, improve the degree of accuracy of back facet current value, thus improve laser two further
Regulation efficiency and the degree of accuracy of luminous power launched by pole pipe.It is understood that in other embodiments, it is possible to directly by measuring
The output valve of photodiode 230 obtains the second updated value of back facet current.
Transmitting optical power value is converted to absolute value by relative value by step S4122..Due to sending out that light power meter 100 is measured
Penetrating optical power value and be usually relative value, such as unit is the value of dBm, therefore, for the ease of follow-up calculating, need to will launch light merit
Rate value is converted to absolute value, and such as unit is the value of μ W.Being converted to as a example by μ W by dBm, conversion formula is: P0=10(P/10)*
1000.Wherein, P0For the transmitting optical power value after conversion, unit is μ W；P is the transmitting optical power value before conversion, and unit is
dBm.If it is understood that the transmitting optical power value received is absolute value, being then performed without step S4122.
Step S4123. draws divided by the second updated value of back facet current compare numerical constant by launching optical power value.
Although ratio numerical constant usually steady state value, but it is likely in practical situations both there are floating feelings because of other factors
Condition, such as may be steady by the temperature of photodiode 230 responsiveness (i.e. the phase induced current of unit optical power) than numerical constant
Affect qualitatively.Therefore, the present embodiment is all to utilize step S4121 in person to calculate to step S4123 in each cyclic process
Ratio numerical constant, thus improve degree of accuracy and the efficiency of regulation.
It is understood that the concrete implementation status of step S412 is not limited to above-mentioned a kind of situation, as long as ensure that tune
The degree of accuracy of joint and efficiency.
Based on step S411 and step S412, the concrete executive mode of step S420 comprises the following steps, please continue to refer to
Fig. 3.
Step S421. by target light power divided by the first updated value drawing back facet current than numerical constant.
Wherein, target light power should be converted to absolute value equally, and launches optical power value after changing with step S4122
Unit is identical, thus ensures accuracy.
According to the first updated value of above-mentioned second dependency and back facet current, step S422. show that target light power is corresponding
The updated value of datum also updates the value of datum, is further continued for performing step S200, until launching optical power value to be in mesh
Till within the scope of mark.
Wherein it is possible to by the second dependency such as Im=H*2(APCSET_DAC/32)Carry out inverse operation, can be by back facet current
First updated value draws the updated value of the APCSET_DAC after renewal, i.e. datum.Afterwards, APC circuit 240 can be again sharp
The bias current of laser diode 220 is regulated by the updated value of this datum.Due to the updated value of datum be based on
Target light performance number draws, hence in so that the transmitting luminous power of laser diode 220 is further to target light power, thus
Within ensureing finally to make transmitting optical power value be in target zone.
Therefore, the above-mentioned laser diode proposed at the present embodiment is launched in optical power adjusting method, the efficiency of regulation with
Laser diode 220, photodiode 230 characteristic inherently have certain relation, if than numerical constant in each merit
Rate point all keeps constant, then have only to regulate and once can be transferred to target light power.Even if ratio some variation of numerical constant, may
Suitable increase regulation cycle-index, general increase once, at most increases by 2 cyclic processes and can complete regulation process, therefore
Compared with traditional two way classification control method (two way classification control method some be at maximum up to 8 times complete), efficiency is greatly improved.
On the other hand, owing to there is relatively stable characteristic than numerical constant and the second dependency so that laser diode 220
Transmitting optical power value and the target light performance number of output very close to, it is easy to meet the error of such as 0.1dB, thus improve and send out
Penetrate the accuracy of optical power adjustment.Therefore, it is a kind of safety that this laser diode launches optical power adjusting method, efficiently, accurately
Control method, it is possible to effectively promote optical communication terminal BOB (the BOSA On Board) product such as product, optical module product batch
Amount production efficiency and the qualitative reliability of product.
Fig. 1 to Fig. 4 is respectively the related procedure schematic diagram of the method for one embodiment of the invention.Though it should be understood that
So each step in the flow chart of Fig. 1 to Fig. 4 shows successively according to the instruction of arrow, but these steps be not necessarily by
Order according to arrow instruction performs successively.Unless expressly stated otherwise herein, performing of these steps is the not strictest suitable
Sequence limits, and it can perform in the other order.And, at least some of step in Fig. 1 to Fig. 4 can include multiple sub-step
In rapid or multiple stages, these sub-steps or stage are not necessarily to have performed at synchronization, but can be in difference
Moment perform, its execution sequence is also not necessarily and carries out successively, but can be with other steps or the sub-step of other steps
Rapid or at least some of of stage performs in turn or alternately.
It addition, it is corresponding to launch optical power adjusting method with above-mentioned laser diode, the present embodiment also proposed a kind of laser
Diode emitter optical power adjusting regulating device, is used for controlling APC circuit 240.APC circuit 240 is by drive circuit 210 and laser two
Pole pipe 220 connects, and APC circuit 240 is also connected with photodiode 230.As it is shown in figure 5, this laser diode launches light merit
Rate adjusting means includes following module.
Datum initial value arranges module 400, for arranging the initial value of the datum of APC circuit 240.Wherein,
Datum is the most stable for monitoring the back facet current exported by photodiode 230 for APC circuit 240.
Launch optical power value receiver module 500, for receiving the transmitting optical power value of laser diode 220.This transmitting light
Performance number is to measure after APC circuit 240 is according to the bias current of the value regulation laser diode 220 after datum renewal
Go out.
Judge module 600, is used for judging launching optical power value when being in outside target zone, according to laser diode 220
Transmitting luminous power and datum between the first dependency of having, draw the renewal of the datum that target light power is corresponding
Value also updates the value of datum.Continue afterwards to be performed successively respectively by transmitting optical power value receiver module 500, judge module 600
From running, until launching till optical power value is within target zone.
Swash it should be noted that this laser diode launches the function that in optical power adjusting regulating device, each module performs with above-mentioned
It is corresponding that optical diode launches optical power adjusting method, the most just repeats no more.
It addition, the present embodiment also proposed a kind of laser diode launches optical power adjustment system, as shown in Figure 6.This swashs
Optical diode is launched optical power adjustment system and is included laser diode transmitter module 200, light power meter 100 and regulation main controller
300.Wherein, laser diode transmitter module 200 is connected with light power meter 100, regulation main controller 300 respectively.Regulation main controller
300 are also connected with light power meter 100.
As it is shown in fig. 7, laser diode transmitter module 200 includes drive circuit 210, laser diode 220, photoelectricity two pole
Pipe 230 and APC circuit 240.Wherein, drive circuit 210 is connected with laser diode 220, APC circuit 240 respectively.APC circuit
240 are also connected with photodiode 230.Light power meter 100 is connected with the light mouth of laser diode 220.Regulation main controller 300 points
It is not connected with light power meter 100, APC circuit 240.
Wherein, laser diode transmitter module 200 is used for converting electrical signals to optical signal, can apply to optic communication eventually
Laser emitting portion in the end fiber access device such as BOB product, optical module product.Drive circuit 210 is equivalent to high speed electric current
Switch, it is used for driving laser diode 220 luminous.The backlight electricity that APC circuit 240 is exported by sense photodiode 230
Stream realizes closed loop control, thus by bias current the putting down with holding laser diode 220 of the 220 of regulation laser diode
All light power stabilisings.It is understood that internal other devices that can also include of laser diode transmitter module 200, such as temperature
Degree control circuit, describes in detail the most one by one.The light power meter 100 transmitting light merit by optical fiber measurement laser diode 220
Rate value, and the transmitting optical power value measured is sent to regulation main controller 300.It is understood that laser diode 220 send out
Penetrate optical power value also can measure by other means, be not limited to a kind of situation of light power meter 100.Regulation main controller 300, uses
Launching optical power adjusting method in performing above-mentioned laser diode, the concrete principle that performs the most just repeats no more.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, not to above-mentioned reality
The all possible combination of each technical characteristic executed in example is all described, but, as long as the combination of these technical characteristics is not deposited
In contradiction, all it is considered to be the scope that this specification is recorded.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but also
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that, come for those of ordinary skill in the art
Saying, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these broadly fall into the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a laser diode launches optical power adjusting method, it is characterised in that be used for controlling APC circuit；Described APC circuit
It is connected with laser diode by drive circuit, and described APC circuit is also connected with photodiode；Described laser diode is sent out
Penetrate optical power adjusting method to include:
The initial value of datum in APC circuit is set；Described datum is for supplying described APC circuit monitoring by described photoelectricity
The back facet current of diode output is the most stable；
Receive the transmitting optical power value of described laser diode；Described transmitting optical power value is according to described at described APC circuit
After the bias current of the value described laser diode of regulation after datum renewal, measurement draws；
Judge when described transmitting optical power value is in outside target zone, according to described datum and described laser diode
Launch the first dependency having between luminous power, draw the updated value of the described datum that target light power is corresponding and update
The value of described datum, is further continued for performing to receive the step launching optical power value of described laser diode, until described
Penetrate till optical power value is within target zone.
Laser diode the most according to claim 1 launches optical power adjusting method, it is characterised in that according to described reference
The first dependency having between the transmitting luminous power of level and described laser diode, draws corresponding described of target light power
The updated value of datum also updates the value of described datum, is further continued for the transmitting light merit performing to receive described laser diode
The step of rate value, the step till described transmitting optical power value is within target zone includes:
Obtain the first dependency having between described transmitting luminous power and described datum；
Draw the updated value of described datum that target light power is corresponding according to described first dependency and update described reference
The value of level, is further continued for performing to receive the step launching optical power value of described laser diode, until described transmitting luminous power
Till value is within target zone.
Laser diode the most according to claim 2 launches optical power adjusting method, it is characterised in that obtain described transmitting
The step of the first dependency having between luminous power and described datum includes:
Obtain the second dependency having between described back facet current and described datum；
Obtain the ratio numerical constant having between described transmitting luminous power and described back facet current.
Laser diode the most according to claim 3 launches optical power adjusting method, it is characterised in that according to described first
Dependency draws the updated value of the described datum that target light power is corresponding and updates the value of described datum, is further continued for holding
Row receives the step launching optical power value of described laser diode, until within described transmitting optical power value is in target zone
Till step include:
By described target light power divided by described the first updated value drawing described back facet current than numerical constant；
The first updated value according to described second dependency and described back facet current draw described target light power corresponding described in
The updated value of datum also updates the value of described datum, is further continued for the transmitting light merit performing to receive described laser diode
The step of rate value, till described transmitting optical power value is within target zone.
Laser diode the most according to claim 3 launches optical power adjusting method, it is characterised in that obtain described transmitting
The step of the ratio numerical constant having between luminous power and described back facet current includes:
After updating according to described second dependency and described datum worth go out described back facet current the second updated value；
Described transmitting optical power value is drawn divided by the second updated value of described back facet current and described compares numerical constant.
Laser diode the most according to claim 5 launches optical power adjusting method, it is characterised in that by described transmitting light
Performance number draws divided by the second updated value of described back facet current and described also includes than before the step of numerical constant:
Described transmitting optical power value is converted to absolute value by relative value.
Laser diode the most according to claim 3 launches optical power adjusting method, it is characterised in that described second is correlated with
Property is: Im=H*2(APCSET_DAC/32)；Wherein, ImFor described back facet current；H is constant；APCSET_DAC is described datum.
Laser diode the most according to claim 1 launches optical power adjusting method, it is characterised in that receive described laser
The step launching optical power value of diode is:
The transmitting optical power value of the described laser diode of received optical power measurement amount.
9. a laser diode launches optical power adjusting regulating device, it is characterised in that be used for controlling APC circuit；Described APC circuit
It is connected with laser diode by drive circuit, and described APC circuit is also connected with photodiode；Described laser diode is sent out
Penetrate optical power adjusting regulating device to include:
Datum initial value arranges module, for arranging the initial value of the datum of APC circuit；Described datum is used for
The back facet current exported by described photodiode for described APC circuit monitoring is the most stable；
Launch optical power value receiver module, for receiving the transmitting optical power value of described laser diode；Described transmitting luminous power
Value is to measure after described APC circuit regulates the bias current of described laser diode according to the value after the renewal of described datum
Draw；
Judge module, is used for judging when described transmitting optical power value is in outside target zone, according to described laser diode
Launch the first dependency having between luminous power and described datum, draw the described datum that target light power is corresponding
Updated value and update the value of described datum, be further continued for by described transmitting optical power value receiver module, judge module successively
Perform respective running, till described transmitting optical power value is within target zone.
10. a laser diode launches optical power adjustment system, it is characterised in that include laser diode transmitter module, light
Energy meter and regulation main controller；Described laser diode transmitter module include drive circuit, laser diode, photodiode and
APC circuit；Described drive circuit is connected with described laser diode, described APC circuit respectively；Described APC circuit is also with described
Photodiode connects；Described light power meter is connected with the light mouth of described laser diode；
Described regulation main controller is connected with described light power meter, described APC circuit respectively；Described regulation main controller is used for right of execution
Profit requires that the laser diode described in 1 launches optical power adjusting method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610628619.6A CN106230501B (en) | 2016-08-03 | 2016-08-03 | Laser diode emits optical power adjusting method, apparatus and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610628619.6A CN106230501B (en) | 2016-08-03 | 2016-08-03 | Laser diode emits optical power adjusting method, apparatus and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106230501A true CN106230501A (en) | 2016-12-14 |
| CN106230501B CN106230501B (en) | 2018-11-13 |
Family
ID=57535030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610628619.6A Active CN106230501B (en) | 2016-08-03 | 2016-08-03 | Laser diode emits optical power adjusting method, apparatus and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106230501B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908138A (en) * | 2017-04-18 | 2017-06-30 | 昆山金鸣光电科技有限公司 | A kind of light power control method and device for optical fiber vibration sensing |
| CN107910742A (en) * | 2017-11-22 | 2018-04-13 | 青岛海信宽带多媒体技术有限公司 | Optical module optical power adjustment method and device |
| CN109884604A (en) * | 2019-03-26 | 2019-06-14 | 光梓信息科技（上海）有限公司 | Laser power calibration method, apparatus, system and laser power calibration equipment |
| CN111313965A (en) * | 2020-02-21 | 2020-06-19 | 国网河南省电力公司电力科学研究院 | Intelligent substation optical fiber link testing method and device |
| CN111327358A (en) * | 2018-12-17 | 2020-06-23 | 山东华云光电技术有限公司 | Control method and control system for compensating tracking error of optical device |
| CN111555802A (en) * | 2020-04-10 | 2020-08-18 | 南京光通光电技术有限公司 | Debugging method for optical power and extinction ratio of optical module |
| CN112189287A (en) * | 2018-05-21 | 2021-01-05 | 谷歌有限责任公司 | Burst mode laser driving circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010199218A (en) * | 2009-02-24 | 2010-09-09 | Nippon Telegr & Teleph Corp <Ntt> | Laser output automatic control circuit |
| CN103391138A (en) * | 2013-07-22 | 2013-11-13 | 烽火通信科技股份有限公司 | Quick-initialization digital automatic light power control circuit for laser driver |
| CN105227243A (en) * | 2015-08-21 | 2016-01-06 | 青岛海信宽带多媒体技术有限公司 | A kind of circuit, chip and optical module controlling extinction ratio |
-
2016
- 2016-08-03 CN CN201610628619.6A patent/CN106230501B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010199218A (en) * | 2009-02-24 | 2010-09-09 | Nippon Telegr & Teleph Corp <Ntt> | Laser output automatic control circuit |
| CN103391138A (en) * | 2013-07-22 | 2013-11-13 | 烽火通信科技股份有限公司 | Quick-initialization digital automatic light power control circuit for laser driver |
| CN105227243A (en) * | 2015-08-21 | 2016-01-06 | 青岛海信宽带多媒体技术有限公司 | A kind of circuit, chip and optical module controlling extinction ratio |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908138A (en) * | 2017-04-18 | 2017-06-30 | 昆山金鸣光电科技有限公司 | A kind of light power control method and device for optical fiber vibration sensing |
| CN106908138B (en) * | 2017-04-18 | 2019-12-10 | 昆山金鸣光电科技有限公司 | Optical power control method and device for optical fiber vibration sensing |
| CN107910742A (en) * | 2017-11-22 | 2018-04-13 | 青岛海信宽带多媒体技术有限公司 | Optical module optical power adjustment method and device |
| CN107910742B (en) * | 2017-11-22 | 2020-04-07 | 青岛海信宽带多媒体技术有限公司 | Optical power adjusting method and device for optical module |
| CN112189287A (en) * | 2018-05-21 | 2021-01-05 | 谷歌有限责任公司 | Burst mode laser driving circuit |
| CN111327358A (en) * | 2018-12-17 | 2020-06-23 | 山东华云光电技术有限公司 | Control method and control system for compensating tracking error of optical device |
| CN111327358B (en) * | 2018-12-17 | 2021-08-13 | 山东华云光电技术有限公司 | Control method and control system for compensating tracking error of optical device |
| CN109884604A (en) * | 2019-03-26 | 2019-06-14 | 光梓信息科技（上海）有限公司 | Laser power calibration method, apparatus, system and laser power calibration equipment |
| CN111313965A (en) * | 2020-02-21 | 2020-06-19 | 国网河南省电力公司电力科学研究院 | Intelligent substation optical fiber link testing method and device |
| CN111555802A (en) * | 2020-04-10 | 2020-08-18 | 南京光通光电技术有限公司 | Debugging method for optical power and extinction ratio of optical module |
| CN111555802B (en) * | 2020-04-10 | 2023-02-21 | 南京光通光电技术有限公司 | Debugging method for optical power and extinction ratio of optical module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106230501B (en) | 2018-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106230501A (en) | Laser diode launches optical power adjusting method, Apparatus and system | |
| CN101369713B (en) | Control device for implementing optical module wavelength locking and method thereof | |
| US6795458B2 (en) | Laser diode control circuit and laser diode control method | |
| CN110429466A (en) | A kind of high-power semiconductor laser real-time detecting system | |
| CN102752055B (en) | EPON and optical module for optical network unit thereof | |
| CN103281132A (en) | Optical module for wide temperature range and working temperature adjusting method thereof | |
| CN109581701A (en) | A kind of real-time stability maintenance system and method for light intensity modulation | |
| AU2001286086A1 (en) | Method of power control in an optical communication system | |
| CN101529757A (en) | Optical transmitter for fiber optic data communication | |
| CN104253655B (en) | Transmitter and optical network unit for TWDM PON Wavelength tunable | |
| CN106877170B (en) | Laser emission automatic control circuit, method and related chip, optical module and equipment | |
| US20110236028A1 (en) | Method and apparatus for compensating for optical crosstalk in an optical output power feedback monitoring system of a parallel optical transmitter | |
| CN102932697B (en) | EPON and Low-power-consumptiocontrol control method thereof and optical network unit | |
| US11223428B2 (en) | Power over fiber system | |
| KR101057826B1 (en) | Method and apparatus for distortion control of optical transmitter | |
| CN110741312B (en) | Optical transmission device, optical transmission method, control circuit for optical transmission device, and storage medium for optical transmission device | |
| CN102752676B (en) | EPON and optical module for optical network unit thereof | |
| CN107547134A (en) | A kind of method and device of optical fiber transmission | |
| CN115118344B (en) | Device and method for regulating stable light characteristic parameter | |
| US6741761B2 (en) | Method for achieving improved transmission performance over fiber using a Mach-Zehnder modulator | |
| CN202738051U (en) | Passive optical network and optical network unit optical module thereof | |
| US20120057878A1 (en) | Communication device and control method of the same | |
| JP6880333B2 (en) | Optical transmitters, optical transmitter methods, and programs | |
| CN113805363B (en) | Silicon optical modulator device for burst transmission and control method | |
| US11646540B2 (en) | Variable optical attenuator assisted control of optical devices |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |