CN106253044B - A kind of wavelength control method and device of tunable laser - Google Patents
A kind of wavelength control method and device of tunable laser Download PDFInfo
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- CN106253044B CN106253044B CN201610873903.XA CN201610873903A CN106253044B CN 106253044 B CN106253044 B CN 106253044B CN 201610873903 A CN201610873903 A CN 201610873903A CN 106253044 B CN106253044 B CN 106253044B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/131—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
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Abstract
The invention discloses a kind of wavelength control method and devices of tunable laser, the stability and accuracy of the optical maser wavelength that the Laser emission control system to improve Wavelength tunable exports.This method are as follows: sampling is carried out to the bias current that mirror current source is exported to tunable laser and obtains sampled value；Calculate the error between sampled value bias current desired value corresponding with preset current channel；When determining the error not in the corresponding threshold range of preset current channel, the voltage of mirror current source is input to according to the error transfer factor, if monitoring, the tunable laser is in off state from open state switching, is kept the voltage for being currently input to the mirror current source constant and is stored the corresponding numerical value of the voltage；If after monitoring that the tunable laser is switched to open state from closed state, inputting corresponding voltage to mirror current source according to the numerical value stored before closing.
Description
This case be on February 18th, 2014 it is submitting, be a kind of tunable application No. is 2014100548586, patent name
The divisional application of the wavelength control method and device of laser.
Technical field
The present invention relates to technical field of photo communication more particularly to the wavelength control methods and dress of a kind of tunable laser
It sets.
Background technique
In Wave division multiplexing passive optical network (WDM-PON) optical network unit (ONU) Wavelength tunable ejector system, to can
The stability and precise requirements of the wavelength of tuned laser output are relatively high.
As shown in Fig. 1, in the Laser emission control system of Wavelength tunable, pass through the number of micro-control unit (MCU)
Input of analog converter (DAC) output voltage as mirror current source, the mirror image that will be exported after mirror current source mirror image
Electric current is loaded onto tunable laser as bias current.Wherein, shown in attached drawing 1, Bias_Set indicates the DAC output of MCU
Voltage, Bias_Laser indicate the bias current of mirror current source output, and VCC is the DC power supply for being supplied to mirror current source,
B1 and B2 indicate the base stage of triode, and E1 and E2 indicate the emitter of triode, and C1 and C2 indicate the collector of triode, R1 and
R2 is two resistance.In addition, laser driver output modulation electric current (differential signal of the modulation electric current is TOUCA and TOUTC),
It is loaded into tunable laser jointly by bias current and modulation electric current, the wavelength that control tunable laser output needs.
But mirror current source is in the identical situation of input stimulus, due to the temperature of the triode of composition mirror current source
Degree changes, and leads to the variation of triode quiescent point, and then the bias current of output is caused to change, so that load
Bias current to tunable laser is unstable, and the wavelength of tunable laser transmitting laser is caused to generate greatly drift.
Summary of the invention
The present invention provides a kind of wavelength control method and device of tunable laser, to improve the laser of Wavelength tunable
The stability of the optical maser wavelength of launch control system output.
Specific technical solution provided in an embodiment of the present invention is as follows:
On the one hand, a kind of wavelength control method of tunable laser is provided, comprising:
Sampling is carried out to the bias current that mirror current source is exported to tunable laser and obtains sampled value；
Calculate the error between sampled value bias current desired value corresponding with preset current channel；
When determining error not in the corresponding threshold range of preset current channel, mirror image electricity is input to according to error transfer factor
The voltage in stream source；
If monitoring, tunable laser is in off state from open state switching, keeps currently being input to mirror current source
Voltage it is constant and store the corresponding numerical value of voltage；If monitoring, tunable laser is switched to open state from closed state
Afterwards, corresponding voltage is inputted to mirror current source according to the numerical value stored before closing.
On the other hand, a kind of wavelength control apparatus of tunable laser is provided, comprising:
Sampling module, for sampled to the bias current that mirror current source is exported to tunable laser
Value；
Computing module, for calculating between sampled value bias current desired value corresponding with preset current channel
Error；
Module is adjusted, when for determining the error not in the corresponding threshold range of preset current channel, according to institute
State the voltage that error transfer factor is input to mirror current source；
Second monitoring modular, is used for:
The open and-shut mode handover event of the tunable laser is monitored, if monitoring the tunable laser from unlatching
State switching is in off state, and keeps that the voltage for being currently input to the mirror current source is constant and to store the voltage corresponding
Numerical value；If after monitoring that the tunable laser is switched to open state from closed state, according to being stored before closing
Numerical value inputs corresponding voltage to mirror current source.
Based on the above-mentioned technical proposal, in the embodiment of the present invention, by exporting mirror current source to tunable laser
Bias current carries out sampling and obtains sampled value, calculates the expectation of sampled value bias current corresponding with preset current channel
Error between value, when determining the error not in the corresponding threshold range of preset current channel, according to the error transfer factor
It is input to the voltage of mirror current source, repeats the process, until the new sampled value that adjustment voltage post-sampling obtains is determined, with the phase
The error of prestige value adjusts the electricity that each channel is input to mirror current source in the corresponding threshold range of current channel, through closed loop
Pressure, the error of the bias current that each channel is exported through mirror current source bias current desired value corresponding with preset each channel
Control in a certain range, improves the stability for the bias current that each channel of tunable laser is exported through mirror current source,
By improving the stability of the bias current, the stability and accuracy of the optical maser wavelength of tunable laser output are improved.
Detailed description of the invention
Fig. 1 is bias current loading method schematic diagram in existing wavelength tunable laser launch control system；
Fig. 2 is the wavelength control method flow schematic diagram of tunable laser in the embodiment of the present invention；
Fig. 3 a is the wavelength control method flow diagram of tunable laser in the first specific embodiment of the invention；
Fig. 3 b is bias current control block diagram in the second specific embodiment of the invention；
Fig. 4 is the wavelength control apparatus structural schematic diagram of tunable laser in the embodiment of the present invention.
Specific embodiment
In order to improve the stability and accuracy of the optical maser wavelength that tunable laser exports, the embodiment of the invention provides
A kind of wavelength control method and device of tunable laser.
The preferred embodiment of the present invention is described in detail with reference to the accompanying drawing.
In first embodiment of the invention, as shown in Fig. 2, a kind of wavelength control method of tunable laser is provided,
The specific implementation procedure of this method is as follows:
Step 201: sampling being carried out to the bias current that mirror current source is exported to tunable laser and obtains sampled value.
Step 202: calculating the error between sampled value bias current desired value corresponding with preset current channel.
In the embodiment of the present invention, according to the corresponding relationship in preset channel and the desired value of bias current, obtain and current
The desired value of the corresponding bias current in channel.
Preferably, to the mirror image bias current that mirror current source is exported to laser emitter carry out sampling obtain sampled value it
Before, according to the corresponding relationship between preset channel and the initial input value for the voltage for being input to mirror current source, obtain current
The initial input value of the corresponding voltage for being input to mirror current source in channel, and it is input to mirror current source.
It in practical application, is debugged at normal temperature, some channel for measuring tunable laser accurately exports some wave
When long laser, the bias current of mirror current source output is sampled, the sampled value of acquisition is corresponding as the wavelength
The desired value of bias current, that is, tunable laser the corresponding bias current in the channel desired value, according to the principle,
The desired value of the corresponding bias current of each wavelength can be measured, i.e. the corresponding bias current in each channel of tunable laser
Desired value, thus establish each channel of tunable laser, each channel emission laser wavelength and bias current desired value
Corresponding relationship.
Step 203: when determining the error not in the corresponding threshold range of preset current channel, according to the error
Adjustment is input to the voltage of mirror current source.
In the embodiment of the present invention, the voltage that each channel is input to mirror current source is adjusted by closed loop, by each channel through mirror
The control errors of the bias current desired value corresponding with each channel of image current source output are in a certain range, each logical by improving
The stability of road bias current improves the stability and accuracy of the optical maser wavelength of tunable laser output.
Preferably, preset threshold is distinguished for each channel, the corresponding threshold value in each channel may be the same or different.
Specifically, difference of the error between sampled value bias current desired value corresponding with preset current channel, really
When determining corresponding not less than the current channel threshold value of the absolute value of difference, the voltage of mirror current source is input to according to difference adjustment.
In the embodiment of the present invention, when determining that accidentally absolute value of the difference is not less than the threshold value of current channel, according to the error transfer factor
It is input to the voltage of mirror current source, and repeats step 201 to step 203, until determining that adjustment is input to image current
The new sampled value that the voltage post-sampling in source obtains is less than current channel with the mistake absolute value of the difference of the desired value of current channel
Threshold value.
Specifically, if determining that sampled value is less than desired value according to error, reduce the voltage for being input to mirror current source, if root
It determines that sampled value is greater than desired value according to error, increases the voltage for being input to mirror current source.
Further, reduce the voltage for being input to mirror current source, specifically:
If the voltage for being input to mirror current source is less than or equal to preset voltage minimum, adjustment is input to mirror current source
Voltage reach the preset voltage minimum；
If the voltage for being input to mirror current source is greater than preset voltage minimum, the voltage of mirror current source will be input to
Reduce preset step-length corresponding with the current channel；
Increase the voltage for being input to mirror current source, specifically:
If the voltage for being input to mirror current source is more than or equal to preset voltage max, adjustment is input to mirror current source
Voltage reach the preset voltage max；
If the voltage for being input to mirror current source is less than preset voltage max, the voltage of mirror current source will be input to
Increase preset step-length corresponding with the current channel.
Preferably, being input to mirror image according to error transfer factor after determining that accidentally absolute value of the difference is not less than the threshold value of current channel
Before the voltage of current source, determines and preset threshold value is not more than to the adjustment number for the voltage for being input to mirror current source, it will
It adjusts number and increases preset value, otherwise, it determines terminating this treatment process when adjustment number is greater than preset threshold value.
In practical application, the output end (output end of bias current) of mirror current source is connected to the analog-to-digital conversion of MCU
Device (ADC) carries out ADC sampling, carries out the sampled value that respective handling is converted to bias current.
Preferably, during executing step 201 to step 203, whether the channel of real-time monitoring tunable laser
It switches, if monitoring, channel switches, and the initial input value of the corresponding voltage in pre-switch channel is obtained, by the pre-cut
The initial input value for changing the corresponding voltage in channel is input to mirror current source, and executes the adjustment of step 201- step 203 and be loaded onto
The bias current of tunable laser.
Preferably, during executing step 201 to step 203, the open and-shut mode of real-time monitoring tunable laser
Handover event.
If monitoring, tunable laser is in off state from open state switching, keeps currently being input to mirror current source
Voltage it is constant and store the corresponding numerical value of the voltage, if monitoring, the tunable laser is switched to out from closed state
After opening state, corresponding voltage is inputted to mirror current source according to the numerical value stored before closing.
In the embodiment of the present invention, after Tunable laser control system power-up initializing, image current is provided input into
The peripheral circuit of the MCU of the voltage in source can be unstable for some time, and it is also inaccurate for sampling the sampled value of the bias current of acquisition
True, in order to avoid starting closed loop adjustment process adjusting bias current at this time, it may cause adjustment direction mistake and to bias
The sampled value of electric current and the error of desired value are increasing, preferably, after Tunable laser control system power-up initializing,
Determine the sampled value for the mirror image bias current that the sampling of continuous n times obtains do not change or fluctuating range within a preset range when,
Starting step 201 adjusts the size of process adjusting bias current to the closed loop of step 203, wherein N is more than or equal to 1.
Below by way of two specific embodiments, in conjunction with shown in attached drawing 3a and attached drawing 3b, to it is provided in an embodiment of the present invention can
The wavelength control method of tuned laser carries out complete, detailed description.
In first specific embodiment, it is illustrated by taking the tunable laser with 16 channels as an example, wherein each channel
A kind of laser of corresponding wavelength.
Step 301: Tunable laser control system electrifying startup；
Step 302: judging whether it is and use for the first time, if executing step 313, otherwise, execute step 303；
Step 303: judge whether that channel handover event occurs, it is no to then follow the steps 304 if executing step 313；
Step 304: sampling being carried out to the bias current of mirror current source output and obtains sampled value Bias_AD, and obtains and works as
The desired value Target_AD of the corresponding bias current of prepass；
Step 305: calculating the error of the desired value Target_AD of sampled value Bias_AD and acquisition, i.e. sampled value Bias_
The difference Error, Error=Bias_AD-Target_AD of the AD and desired value Target_AD of acquisition；
Step 306: judge whether the absolute value of difference Error is greater than threshold value Threshold, if so, step 307 is executed,
Otherwise terminate；
Step 307: judging whether tunable laser is in the open state, if so, executing step 308, otherwise, terminate；
Step 308: 1, i.e. Count=Count+1 are added to the adjustment number Count for the voltage for being input to mirror current source；
Step 309: judging to adjust whether number is greater than threshold value 200, if so, terminating, otherwise, execute step 310；
Step 310: judging whether sampled value Bias_AD is greater than desired value Target_AD according to difference Error, if holding
Otherwise row step 311 executes step 312；
Step 311: whether the voltage that judgement is input to mirror current source is more than or equal to preset voltage max MaxDA,
If so, the voltage that adjustment is input to mirror current source reaches preset voltage max MaxDA, otherwise, mirror image electricity will be input to
The voltage Bias_DA in stream source increases preset step-length Step corresponding with current channel, i.e. Bias_DA=Bias_DA+Step, with
Reduce bias current, turns to go to execute step 314；
Step 312: judgement is input to whether the voltage of mirror current source is less than or equal to preset voltage minimum
Otherwise MinDA, will be input to if so, the voltage that adjustment is input to mirror current source reaches preset voltage minimum MinDA
The voltage Bias_DA of mirror current source reduces preset step-length Step corresponding with current channel, i.e. Bias_DA=Bias_DA-
Step turns to go to execute step 314 so that bias current increases；
Step 313: the initial input of the corresponding voltage for being input to mirror current source in channel after obtaining preset switching
Value, and as the voltage for being currently input to mirror current source；
Step 314: after control tunable laser transmitting laser, turning to go to execute step 304.
In second specific embodiment, as shown in fig. 3b, the output end of mirror current source is connected to the analog-to-digital conversion of MCU
Device (ADC), the bias current exported by ADC to mirror current source (Bias_Laser) carry out sampling and obtain sampled value Bias_AD,
Preset each channel pass corresponding with the desired value (Bias_Target) of bias current is preserved in MCU memory (Flash)
System, and to preserve preset each channel corresponding with the initial value (Bias_DA_Init) for the voltage for being loaded onto mirror current source
Corresponding relationship, preset each channel and the adjustment for the threshold value that relationship, preset each channel and error allow are input to image current
The corresponding relationship of the step-length of the voltage in source.Sampled value Bias_AD and desired value make the difference (Sub) and calculate absolute value (ABS) afterwards, obtain
Absolute value Error threshold value Error_Max corresponding with preset current channel is compared by the absolute value Error of difference
(Compare), if more than threshold value Error_Max, then control selections device (MUX) is input to mirror current source by adjusting MCU
Voltage Bias_DA adjust bias current, the difference after (Sub) is made the difference according to sampled value Bias_AD and desired value selects, if poor
Value is greater than zero, then the voltage Bias_DA for being input to mirror current source is increased preset and current channel by the selection of control selections device
Corresponding step-length step, i.e., reduce bias current, if difference, less than zero, control selections device will be input to mirror current source
Voltage Bias_DA reduces preset step-length step corresponding with current channel, i.e., increases bias current, by voltage adjusted
Load is at mirror current source (Current Mirror), and the bias current (Bias_Laser) exported again to mirror current source
It is sampled.Wherein, the voltage Bias_DA for being input to mirror current source is equal to the electric current for being input to mirror current source and mirror image electricity
The product of the equivalent resistance in stream source.
In the embodiment of the present invention, by for the initial of the default voltage for being loaded onto mirror current source accordingly in each channel
Value, bias current desired value, adjusts the step-length for being input to the voltage of mirror current source at the threshold value of error permission, passes through to each channel
The bias current of mirror current source output carries out sampling and obtains sampled value, is adjusted using closed loop so that each channel corresponds to the inclined of output
Control errors between current sampling data and preset bias current desired value are set in the corresponding threshold range in preset each channel
It is interior, realize that the bias current of each channel output is steady to be adjusted by the voltage for being input to mirror current source to each channel
It is scheduled in a receivable range, improves the stability of the bias current of each channel output, be finally reached stable output
The effect of specific wavelength.
In second embodiment of the invention, as shown in Fig. 4, a kind of wavelength control apparatus of tunable laser, the device
Specific implementation can be found in above method part description, overlaps will not be repeated, and the device mainly includes sampling modules
401, computing module 402 and adjustment module 403, wherein
Sampling module 401, for carrying out sampling acquisition to the bias current that mirror current source is exported to tunable laser
Sampled value；
Computing module 402, for calculate sampled value bias current desired value corresponding with preset current channel it
Between error；
Module 403 is adjusted, when for determining the error not in the corresponding threshold range of preset current channel, according to
The error transfer factor is input to the voltage of mirror current source.
Preferably, the adjustment module is specifically used for:
Determine that the difference between sampled value bias current desired value corresponding with preset current channel is worked as not less than described
The corresponding threshold value of prepass.
Preferably, the device further includes the first monitoring modular 404, it is used for:
Whether monitoring channel switches, and when monitoring that channel switches, and obtains the corresponding electricity in pre-switch channel
The initial input value of the corresponding voltage in the pre-switch channel is input to mirror current source by the initial input value of pressure.
Preferably, which further includes the second monitoring modular 405, is used for:
The open and-shut mode handover event for monitoring the tunable laser, monitors the open and-shut mode of the tunable laser
Handover event, if monitoring, the tunable laser is in off state from open state switching, keeps currently being input to described
The voltage of mirror current source is constant and stores the corresponding numerical value of the voltage；If monitoring the tunable laser from closing shape
After state is switched to open state, corresponding voltage is inputted to mirror current source according to the numerical value stored before closing.
Wherein, adjustment module is specifically used for:
If determining that the sampled value is less than the desired value according to the error, reduce the electricity for being input to mirror current source
Pressure increases the voltage for being input to mirror current source if determining that the sampled value is greater than the desired value according to the error.
Specifically, adjustment module is specifically used for:
When reduction is input to the voltage of mirror current source, if the voltage for being input to mirror current source is less than or equal to preset electricity
Minimum value is pressed, the voltage that adjustment is input to mirror current source reaches the preset voltage minimum；
If the voltage for being input to mirror current source is greater than preset voltage minimum, the voltage of mirror current source will be input to
Reduce preset step-length corresponding with the current channel；
When increase is input to the voltage of mirror current source, if the voltage for being input to mirror current source is more than or equal to preset electricity
Maximum value is pressed, the voltage that adjustment is input to mirror current source reaches the preset voltage max；
If the voltage for being input to mirror current source is less than preset voltage max, the voltage of mirror current source will be input to
Increase preset step-length corresponding with the current channel.
Based on the above-mentioned technical proposal, in the embodiment of the present invention, by exporting mirror current source to tunable laser
Bias current carries out sampling and obtains sampled value, calculates the expectation of sampled value bias current corresponding with preset current channel
Error between value, when determining the error not in the corresponding threshold range of preset current channel, according to the error transfer factor
It is input to the voltage of mirror current source, repeats the process, until the new sampled value that adjustment voltage post-sampling obtains is determined, with the phase
The error of prestige value adjusts the electricity that each channel is input to mirror current source in the corresponding threshold range of current channel, through closed loop
Pressure, the error of the bias current that each channel is exported through mirror current source bias current desired value corresponding with preset each channel
Control in a certain range, improves the stability for the bias current that each channel of tunable laser is exported through mirror current source,
By improving the stability of the bias current, the stability and accuracy of the optical maser wavelength of tunable laser output are improved.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (6)
1. a kind of wavelength control method of tunable laser characterized by comprising export mirror current source to adjustable
The bias current of humorous laser carries out sampling and obtains sampled value；It is corresponding with preset current channel partially to calculate the sampled value
Set the error between current expected value；When determining the error not in the corresponding threshold range of preset current channel, according to
The error transfer factor is input to the voltage of mirror current source；If monitoring, the tunable laser is switched to from open state
Closed state keeps the voltage for being currently input to the mirror current source constant and stores the corresponding numerical value of the voltage；If prison
It measures after the tunable laser is switched to open state from closed state, according to the numerical value input pair stored before closing
The voltage answered is to mirror current source.
2. wavelength control method as described in claim 1, which is characterized in that be input to image current according to the error transfer factor
The voltage in source, comprising: if determining that the sampled value is less than the desired value according to the error, reduction is input to image current
The voltage in source increases the electricity for being input to mirror current source if determining that the sampled value is greater than the desired value according to the error
Pressure.
3. wavelength control method as claimed in claim 2, which is characterized in that reduce the voltage for being input to mirror current source, tool
If body includes: to be input to the voltage of mirror current source less than or equal to preset voltage minimum, adjustment is input to mirror current source
Voltage reach the preset voltage minimum；If the voltage for being input to mirror current source is greater than preset voltage minimum,
The voltage for being input to mirror current source is reduced into preset step-length corresponding with the current channel；Increase is input to mirror image electricity
The voltage in stream source, specifically includes: if the voltage for being input to mirror current source is more than or equal to preset voltage max, adjusting defeated
Enter to the voltage of mirror current source and reaches the preset voltage max；If the voltage for being input to mirror current source is less than pre-
If voltage max, the voltage that will be input to mirror current source increases preset step-length corresponding with the current channel.
4. a kind of wavelength control apparatus of tunable laser characterized by comprising sampling module, for image current
Source exports to the bias current of tunable laser and carries out sampling acquisition sampled value；Computing module, for calculating the sampled value
Error between bias current desired value corresponding with preset current channel；Module is adjusted, for determining that the error does not exist
When in the corresponding threshold range of preset current channel, the voltage of mirror current source is input to according to the error transfer factor；Second
Monitoring modular is used for: the open and-shut mode handover event of the tunable laser is monitored, if monitoring the tunable laser
Device is in off state from open state switching, is kept the voltage for being currently input to the mirror current source constant and is stored the electricity
Press corresponding numerical value；If after monitoring that the tunable laser is switched to open state from closed state, according to being deposited before closing
The numerical value of storage inputs corresponding voltage to mirror current source.
5. wavelength control apparatus as claimed in claim 4, which is characterized in that the adjustment module is specifically used for: if according to institute
It states error and determines that the sampled value is less than the desired value, reduce the voltage for being input to mirror current source, if according to the error
It determines that the sampled value is greater than the desired value, increases the voltage for being input to mirror current source.
6. wavelength control apparatus as claimed in claim 5, which is characterized in that the adjustment module is specifically used for: reducing input
To mirror current source voltage when, if be input to mirror current source voltage be less than or equal to preset voltage minimum, adjust it is defeated
Enter to the voltage of mirror current source and reaches the preset voltage minimum；If the voltage for being input to mirror current source is greater than pre-
If voltage minimum, the voltage that will be input to mirror current source reduces preset step-length corresponding with the current channel；Increase
When being input to the voltage of mirror current source greatly, if the voltage for being input to mirror current source is more than or equal to preset voltage max,
The voltage that adjustment is input to mirror current source reaches the preset voltage max；If being input to the voltage of mirror current source
Less than preset voltage max, the voltage for being input to mirror current source is increased into preset step corresponding with the current channel
It is long.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594459A (en) * | 2010-10-29 | 2012-07-18 | 马克西姆综合产品公司 | Dual laser-power-level control and calibration system for burst-mode and continuous-mode transmitter |
| CN103457673A (en) * | 2013-07-26 | 2013-12-18 | 厦门优迅高速芯片有限公司 | Method and device for improving saturated light power of APD optical receiver |
| CN103576734A (en) * | 2013-10-21 | 2014-02-12 | 电子科技大学 | Dual-ring control self-adapting voltage adjusting method and device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6922421B2 (en) * | 2003-01-10 | 2005-07-26 | Agilent Technologies, Inc. | Control and calibration of laser systems |
| JP4663512B2 (en) * | 2005-12-22 | 2011-04-06 | 富士通テレコムネットワークス株式会社 | Laser diode drive circuit |
| US7826509B2 (en) * | 2006-12-15 | 2010-11-02 | President And Fellows Of Harvard College | Broadly tunable single-mode quantum cascade laser sources and sensors |
| CN101592762B (en) * | 2009-06-05 | 2012-07-04 | 中兴通讯股份有限公司 | Optical module and control method thereof |
| CN102347793A (en) * | 2011-10-28 | 2012-02-08 | 江苏奥雷光电有限公司 | Method for regulating optical power of optical module |
| CN102761052A (en) * | 2012-07-31 | 2012-10-31 | 青岛海信宽带多媒体技术有限公司 | Optical module working parameter adjusting method and adjusting device |
-
2014
- 2014-02-18 CN CN201610873903.XA patent/CN106253044B/en active Active
- 2014-02-18 CN CN201410054858.6A patent/CN103840364B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594459A (en) * | 2010-10-29 | 2012-07-18 | 马克西姆综合产品公司 | Dual laser-power-level control and calibration system for burst-mode and continuous-mode transmitter |
| CN103457673A (en) * | 2013-07-26 | 2013-12-18 | 厦门优迅高速芯片有限公司 | Method and device for improving saturated light power of APD optical receiver |
| CN103576734A (en) * | 2013-10-21 | 2014-02-12 | 电子科技大学 | Dual-ring control self-adapting voltage adjusting method and device |
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| CN103840364A (en) | 2014-06-04 |
| CN106253044A (en) | 2016-12-21 |
| CN103840364B (en) | 2016-11-23 |
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