CN108418636A - Optical module and impedance matching methods - Google Patents
Optical module and impedance matching methods Download PDFInfo
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- CN108418636A CN108418636A CN201810132872.1A CN201810132872A CN108418636A CN 108418636 A CN108418636 A CN 108418636A CN 201810132872 A CN201810132872 A CN 201810132872A CN 108418636 A CN108418636 A CN 108418636A
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- 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
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
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- 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
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
- H04B10/0773—Network aspects, e.g. central monitoring of transmission parameters
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Abstract
Present invention is disclosed a kind of optical modules and impedance matching methods and device.The optical module includes the PCBA board of emitting laser component and carrying high speed signal driving chip, the PCBA board sends high-speed electrical signals to the emitting laser component, it connects in the originator circuit that PCBA board is formed with emitting laser component and accesses program-controlled resistor, by the adjusting of program-controlled resistor, to adjust the impedance of originator circuit.By when the difference between the impedance and matches criteria impedance of circuit of starting is more than range of tolerable variance, by adjusting program-controlled resistor, to adjust the impedance of originator circuit, improve adaptability of the circuit to emitting laser component, emitting laser component is enable to get the optimal high-speed electrical signals of signal quality simultaneously, the stability for improving the high-speed electrical signals quality of acquisition solves the problem of bad adaptability of hardware circuit, the high-speed electrical signals unstable quality of acquisition.
Description
Technical field
The present invention relates to technical field of optical fiber communication, more particularly to a kind of optical module and impedance matching methods.
Background technology
In existing optical communication applications, the impedance matching between optical module inner high speed signal driving chip and laser
It will have a direct impact on the quality of optical module transmitting high-speed electrical signals.In the design phase of optical module, can be adjusted based on the impedance of laser
Hardware circuit between whole optical module and laser makes impedance matching between the two reach best, best to obtain quality
High-speed electrical signals.
But since laser is during the manufacturing, the consistency of laser impedance is difficult to ensure, so cured hard
Part circuit design can not be compatible with the laser impedance fluctuation of wide scope, can influence the quality of high-speed electrical signals, and there is hardware electricity
The problem of bad adaptability on road, the high-speed electrical signals unstable quality of acquisition.
Invention content
In order to solve the bad adaptability there is hardware circuit in the related technology, the high-speed electrical signals unstable quality of acquisition
The problem of, the present invention provides a kind of optical module and impedance matching methods.
A kind of optical module includes the PCBA board of emitting laser component and carrying high speed signal driving chip, the PCBA
Plate sends high-speed electrical signals to the emitting laser component, in the originator electricity of the PCBA board and emitting laser component composition
Series connection access program-controlled resistor in road, by the adjusting of the program-controlled resistor, to adjust the impedance of the originator circuit.
A kind of impedance matching methods, are applied to optical module, and the optical module includes emitting laser component and carrying high speed
The PCBA board of signal driving chip, the PCBA board send high-speed electrical signals, the method packet to the emitting laser component
It includes：
It connects in the originator circuit that the PCBA board is formed with emitting laser component and accesses program-controlled resistor；
Monitor the impedance of the originator circuit；
When the difference between the impedance and matches criteria impedance of the originator circuit is more than range of tolerable variance, by adjusting institute
Program-controlled resistor is stated, to adjust the impedance of the originator circuit.
The technical solution that the embodiment of the present invention provides can include the following benefits：
Pass through access program-controlled resistor of connecting in the originator circuit that PCBA board is formed with emitting laser component, monitoring originator
The impedance of circuit, and when the difference between the impedance and matches criteria impedance of circuit of starting is more than range of tolerable variance, pass through adjusting
Program-controlled resistor, to improve adaptability of the circuit to emitting laser component, makes simultaneously to adjust the impedance of originator circuit
Emitting laser component can get the optimal high-speed electrical signals of signal quality, improve the high-speed electrical signals quality of acquisition
Stability solves the problem of bad adaptability of hardware circuit, the high-speed electrical signals unstable quality of acquisition.
It should be understood that above general description and following detailed description is merely exemplary, this can not be limited
Invention.
Description of the drawings
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the present invention
Example, and in specification together principle for explaining the present invention.
Fig. 1 is a kind of optical module device block diagram shown according to an exemplary embodiment；
Fig. 2 is a kind of device block diagram of optical module in application scenarios；
Fig. 3 is a kind of isolation circuit apparatus block diagram shown according to an exemplary embodiment；
Fig. 4 is a kind of device block diagram of isolation circuit in application scenarios；
Fig. 5 is a kind of flow chart of impedance matching methods shown according to an exemplary embodiment；
Fig. 6 is flow chart of the step 350 in one embodiment of Fig. 5 corresponding embodiments；
Fig. 7 is flow chart of the step 353 in one embodiment of Fig. 6 corresponding embodiments；
Fig. 8 is a kind of process for using figure of isolation circuit shown according to an exemplary embodiment.
Specific implementation mode
Here will explanation be executed to exemplary embodiment in detail, the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects being described in detail in claims, of the invention.
Fig. 1 is a kind of optical module device block diagram shown according to an exemplary embodiment.As shown in Figure 1, the optical module packet
It includes but is not limited to：Carry the PCBA board 110 and emitting laser component 130 of high speed signal driving chip.
PCBA board 110 sends high-speed electrical signals to emitting laser component 130, in PCBA board 110 and emitting laser group
Series connection access program-controlled resistor in the originator circuit that part 130 forms, by the adjusting of program-controlled resistor, to adjust the resistance of originator circuit
It is anti-.
Wherein, PCBA board 110 sends high-speed electrical signals by circuit to emitting laser component 130, passes through PCBA board 110
In high speed signal driving chip obtain high-speed electrical signals to be transmitted, high-speed electrical signals are sent to transmitting laser by circuit
Device assembly 130.The circuit for sending high-speed electrical signals is FPC (flexible PCB, full name Flexible Printed Circuit
Board), pass through FPC connection PCB A plates 110 and emitting laser component 130.Emitting laser component 130 receives high speed electricity
After signal, by the high level and low level of high-speed electrical signals, the high level and low level of optical signal are converted to, and launches light letter
Number, the high-speed electrical signals that as emitting laser component 130 emits.
Originator circuit is PCBA board 110, the circuit for the transmission high-speed electrical signals that FPC and emitting laser component 130 form.
It, need to be according to the internal driving of emitting laser component 130, to obtain entire originator circuit during transmitting high-speed electrical signals
Impedance, to make the impedance matching between PCBA board 110 and emitting laser component 130 reach best, emitting laser group
The high-speed electrical signals optimal quality that part 130 emits.Since the internal driving of emitting laser component 130 will produce fluctuation so that
The impedance of entire originator circuit generates variation, influences the quality for the high-speed electrical signals that emitting laser component 130 receives.
Therefore it connects in the originator circuit that PCBA board 110 is formed with emitting laser component 130 and accesses program-controlled resistor, when
When the equivalent resistance of originator circuit generates variation, by the adjusting of program-controlled resistor, the impedance to adjust originator circuit makes acquisition
High-speed electrical signals optimal quality.
Fig. 2 is a kind of device block diagram of optical module in application scenarios.As shown in Fig. 2, TOSA is emitting laser component
130, LD+/- are the anode and cathode of emitting laser component 130, and for inputting the high-speed electrical signals received, Rd is that transmitting swashs
The impedance of light device assembly 130.
PCBA board 110, FPC and emitting laser component 130 constitute entire originator circuit, access of connecting in circuit of starting
Program-controlled resistor makes the impedance matching between PCBA board 110 and emitting laser component 130 by line impedance and program-controlled resistor
Reach best, and adapt to the variation of the impedance of emitting laser component 130, to obtain the high-speed electrical signals of optimal quality.
High-speed electrical signals that high speed signal driving chip provides are sent to the LD of emitting laser component 130 by PCBA board 110 by FPC
+/-, emitting laser component 130 converts the high-speed electrical signals received to optical signal, realizes the light letter for obtaining optimal quality
Number.
This embodiment achieves the adjustings by program-controlled resistor, and the impedance to adjust originator circuit makes the high speed telecommunications of acquisition
Number optimal quality, improves adaptability of the circuit to emitting laser component, while improving the high-speed electrical signals quality of acquisition
Stability, solve the problem of bad adaptability of hardware circuit, the high-speed electrical signals unstable quality of acquisition.
In one exemplary embodiment, the optical module of Fig. 1 corresponding embodiments further includes but is not limited to：Isolation circuit.
Isolation circuit is connect with originator circuit, for adjusting the originator concatenated program-controlled resistor of circuit.
Wherein, isolation circuit is connected with originator circuit, by isolation circuit, adjusts the originator electricity being connect with isolation circuit
The concatenated program-controlled resistor in road, the impedance to adjust originator circuit make the high-speed electrical signals optimal quality of acquisition.
Fig. 3 is a kind of isolation circuit apparatus block diagram shown according to an exemplary embodiment.As shown in figure 3, the isolation is electric
Road includes but not limited to：Switching tube 210 and adjusting control device 230.
There are two switching tubes 210, is controlled by Enable signals, when switching tube 210 receives Enable signals, in leading
Logical state is off when switching tube does not receive Enable signals.
Wherein, Enable signals are the control signals for controlling 210 conducting state of switching tube.According to whether receiving
Enable signals keep switching tube 210 in the conduction state or off-state, when switching tube 210 receives Enable signals
When, switching tube 210 is in the conduction state, and when switching tube 210 does not receive Enable signals, switching tube 210, which is in, disconnects shape
State ensures that originator circuit normal work carries out high speed to which after adjusting program-controlled resistor, isolation circuit be isolated with originator circuit
When the transmission of electric signal, do not influenced by isolation circuit.
Adjusting control device 230 is used to adjust the program-controlled resistor for the originator circuit being connect with isolation circuit.
Wherein, adjusting control device 230 is used to adjust concatenated program-controlled resistor in the originator circuit that isolation circuit connects, and adjusts
Controller 230 can be MCU (micro-control unit, full name Microcontroller Unit), and program-controlled resistor is carried out by MCU
It adjusts.
This embodiment achieves according to Enable signals, the switching of the conducting state and off-state of switching tube is controlled, it is real
Show and has adjusted the isolation circuit of program-controlled resistor and being isolated for originator circuit.
In one exemplary embodiment, the switching tube 210 of Fig. 3 corresponding embodiments is triode, the base of first switch pipe
Pole is connect with the first micro-control unit for generating Enable signals, and collector is connect with power supply, emitter and originator circuit
One end connection.
Second switch pipe is connect with the second micro-control unit for generating Enable signals, and collector is another with originator circuit
One end connects, and emitter is connect with ground terminal.
Fig. 4 is a kind of device block diagram of isolation circuit in application scenarios.As shown in figure 4, isolation circuit includes but not limited to
Power supply VCC, divider resistance, first switch pipe Q1, second switch pipe Q2, ground terminal.First switch pipe Q1 and generation Enable1
First micro-control unit of signal connects, and collector is connect by divider resistance with power supply, emitter and originator circuit
One end connects.
Second switch pipe is connect with the second micro-control unit for generating Enable2 signals, and collector is another with originator circuit
One end connects, and emitter is connect with ground terminal.
So as to obtain the impedance Rf of the originator circuit in access isolation circuit, and it can be controlled and be adjusted by Ctrl signals
It saves controller 230 and adjusts program-controlled resistor, the impedance to adjust originator circuit makes the high-speed electrical signals optimal quality of acquisition.
Fig. 5 is a kind of flow chart of impedance matching methods shown according to an exemplary embodiment.As shown in figure 5, the resistance
Anti- matching process may comprise steps of.
In the step 310, it connects in the originator circuit that PCBA board is formed with emitting laser component and accesses program-controlled resistor.
In a step 330, the impedance of monitoring originator circuit.
Wherein, since the impedance of emitting laser component 130 will produce variation, the impedance of originator circuit is caused to become
Change, and therefore influences the quality of the high-speed electrical signals of transmission.By the impedance of monitoring originator circuit, to judge emitting laser group
Whether the variation of the impedance of part 130 influences high-speed electrical signals quality.
In step 350, when the difference between the impedance and matches criteria impedance of circuit of starting is more than range of tolerable variance, lead to
Program-controlled resistor is overregulated, to adjust the impedance of originator circuit.
Wherein, when matches criteria impedance is the high-speed electrical signals optimal quality obtained, the impedance for circuit of starting.Range of tolerable variance
For the deviation range of impedance Yu the matches criteria impedance of preset originator circuit, range of tolerable variance is a section, may include bearing
Number indicates the impedance of originator circuit when the difference between the impedance and matches criteria impedance of circuit of starting is more than range of tolerable variance
Have big difference with matches criteria impedance, the variation of the impedance for circuit of starting at this time can influence the quality of high-speed electrical signals, therefore logical
Program-controlled resistor is overregulated, to adjust the impedance of originator circuit, the influence to the quality of high-speed electrical signals is eliminated, to obtain quality
Optimal high-speed electrical signals.
This embodiment achieves when start circuit impedance and matches criteria impedance between difference be more than range of tolerable variance when,
By adjusting program-controlled resistor, the impedance to adjust originator circuit makes the high-speed electrical signals optimal quality of acquisition.
In one exemplary embodiment, after the step 310 of Fig. 5 corresponding embodiments, which can wrap
Include following steps.
It keeps the initial value of program-controlled resistor constant, adjusts line impedance of the originator circuit in addition to program-controlled resistor until high speed electricity
Signal quality is optimal, at this time using the impedance for circuit of starting as matches criteria impedance.
The initial value of program-controlled resistor is set as the half of the resistance value of program-controlled resistor, to when needing to adjust program-controlled resistor
It can be adjusted from the centre of program-controlled resistor to program-controlled resistor and increase program-controlled resistor both direction is reduced, to more flexible
Adjusting program-controlled resistor.
It keeps the initial value of program-controlled resistor to remain unchanged, adjusts line impedance of the originator circuit in addition to program-controlled resistor so that
High-speed electrical signals optimal quality, the matches criteria impedance of the high-speed electrical signals optimal quality of the impedance acquisition for circuit of starting at this time.
This embodiment achieves obtain matches criteria impedance.
Fig. 6 is flow chart of the step 350 in one embodiment of Fig. 5 corresponding embodiments.As shown in fig. 6, the step 350 is wrapped
Include following steps.
In step 351, the difference between the impedance and matches criteria impedance of originator circuit is calculated.
In step 353, when difference is more than range of tolerable variance, program-controlled resistor is adjusted according to specified regulated value to adjust hair
The impedance of terminal circuit.
Wherein, since the impedance of originator circuit is generally smaller, it is therefore desirable to consider to adjust originator circuit impedance
Degree of regulation specifies regulated value due to the time of the too high impedance that can influence to adjust originator circuit of each degree of regulation
Program-controlled resistor is adjusted, to save the time for the impedance for adjusting originator circuit.The impedance and matches criteria for calculating originator circuit hinder
Difference between anti-adjusts program-controlled resistor to adjust originator circuit when difference is more than range of tolerable variance according to specified regulated value
Impedance make the high-speed electrical signals optimal quality of acquisition.
This embodiment achieves adjust program-controlled resistor according to specified regulated value to make acquisition to adjust the impedance of originator circuit
High-speed electrical signals optimal quality.
In one exemplary embodiment, after the step 351 of Fig. 6 corresponding embodiments, which can wrap
Include following steps.
When the difference between the impedance and matches criteria impedance of circuit of starting is less than range of tolerable variance, without program-controlled electric
The adjusting of resistance.
When the difference between the impedance and matches criteria impedance of circuit of starting is less than range of tolerable variance, then it represents that transmitting swashs
The variation of the impedance of light device assembly 130 does not interfere with high-speed electrical signals quality, and the impedance of judgement originator circuit makes the high speed of acquisition
Electric signal optimal quality, at this time without the adjusting of program-controlled resistor.
Fig. 7 is flow chart of the step 353 in one embodiment of Fig. 6 corresponding embodiments.As shown in fig. 7, the step 353 can
To include the following steps.
In step 3531, when the absolute value of difference is more than top adjustment value, program-controlled resistor is adjusted according to top adjustment value.
Wherein, regulated value includes top adjustment value and high adjustment value, and high adjustment value is less than the maximum value of range of tolerable variance.It is on duty
When the absolute value of value is more than top adjustment value, need to adjust program-controlled resistor with top adjustment value.When difference is positive value, and difference is absolute
When value is more than top adjustment value, program-controlled resistor is reduced according to top adjustment value, until difference is less than the exhausted of range of tolerable variance or difference
More than high adjustment value and top adjustment value is less than to value.When difference is negative value, and the absolute value of difference is more than top adjustment value, according to
Top adjustment value increases program-controlled resistor, until difference is less than the absolute value of range of tolerable variance or difference more than high adjustment value and is less than
Top adjustment value.When difference is less than range of tolerable variance, the impedance of judgement originator circuit makes the high-speed electrical signals optimal quality of acquisition,
Adjusting without program-controlled resistor.
In exemplary embodiment in the specific implementation, the impedance of originator circuit is Rf, matches criteria impedance is Req,
Top adjustment value is R1, and high adjustment value is R2, and range of tolerable variance is [- r, r], and R1 is more than R2 and R2 is less than r, calculates the difference of Rf and Req
Value, when Rf-Req be more than r, and | Rf-Req | be more than R1 when, by program-controlled resistor from initial value reduce R1, at this time judge originator circuit
The difference Rf-Req of impedance and matches criteria impedance whether be more than range of tolerable variance, stop adjusting journey if being less than range of tolerable variance
If control resistance judges still above range of tolerable variance | Rf-Req | whether it is more than R2 and is less than R1, if it is otherwise, it is straight to repeat the above steps
It is more than range of tolerable variance to be less than range of tolerable variance or Rf-Req to Rf-Req, and | Rf-Req | it is more than R2 and is less than R1.
With should Rf-Req be less than-r, and | Rf-Req | be more than R1 when, by program-controlled resistor from initial value increase R1, sentence at this time
Whether the difference Rf-Req of impedance Yu the matches criteria impedance of disconnected originator circuit is more than range of tolerable variance, if being less than range of tolerable variance
Stop adjusting program-controlled resistor if still above range of tolerable variance to judge | Rf-Req | whether it is more than R2 and is less than R1, if it is otherwise, repeats
Above-mentioned steps are more than range of tolerable variance until Rf-Req is less than range of tolerable variance or Rf-Req, and | Rf-Req | it is less than more than R2
R1。
In step 3533, when the absolute value of difference is more than high adjustment value and is less than top adjustment value, according to less resistive
Value adjusts program-controlled resistor until difference is less than range of tolerable variance.
Wherein, when the absolute value of difference is more than high adjustment value and less than top adjustment value, in a minor key section value adjusting journey is needed
Control resistance.When difference is positive value, and the absolute value of difference is more than high adjustment value and is less than top adjustment value, subtracted according to high adjustment value
Small program-controlled resistor, until difference is less than range of tolerable variance.When difference is negative value, and the absolute value of difference be more than high adjustment value and
When less than top adjustment value, program-controlled resistor is increased according to high adjustment value, until difference is less than range of tolerable variance.
In exemplary embodiment in the specific implementation, the impedance of originator circuit is Rf, matches criteria impedance is Req,
Top adjustment value is R1, and high adjustment value is R2, and range of tolerable variance is [- r, r], and R1 is more than R2 and R2 is less than r, calculates the difference of Rf and Req
Value, when Rf-Req be more than r, and | Rf-Req | be more than R2 and less than R1 when, by program-controlled resistor from reduce R2, at this time judge originator electricity
Whether the impedance on road is more than range of tolerable variance with the difference Rf-Req of matches criteria impedance, stops adjusting if being less than range of tolerable variance
If program-controlled resistor steps be repeated alternatively until that Rf-Req is less than range of tolerable variance still above range of tolerable variance.
With should Rf-Req be less than-r, and | Rf-Req | be more than R2 and less than R1 when, program-controlled resistor is increased into R2, is sentenced at this time
Whether the difference Rf-Req of impedance Yu the matches criteria impedance of disconnected originator circuit is more than range of tolerable variance, if being less than range of tolerable variance
Stop adjusting program-controlled resistor and steps be repeated alternatively until that Rf-Req is less than range of tolerable variance if still above range of tolerable variance.
This embodiment achieves adjust program-controlled resistor according to top adjustment value and high adjustment value.
Fig. 8 is a kind of process for using figure of isolation circuit shown according to an exemplary embodiment.As shown in figure 8, should be every
Process for using from circuit may comprise steps of.
In step 410, when isolation circuit is in the conduction state, the impedance and matches criteria that monitor originator circuit hinder
When difference between anti-is more than range of tolerable variance, by adjusting program-controlled resistor, to adjust the impedance of originator circuit.
Wherein, when the switching tube 210 in isolation circuit is in conducting state, isolation circuit is in the conduction state, when
When isolation circuit is in the conduction state, the impedance of monitoring originator circuit, and when the impedance and matches criteria for monitoring originator circuit
When difference between impedance is more than range of tolerable variance, by adjusting program-controlled resistor, the impedance to adjust originator circuit makes the height of acquisition
Fast electric signal optimal quality.
In step 430, when isolation circuit is off, isolation originator circuit and isolation circuit.
Wherein, when the switching tube in isolation circuit is in off-state, isolation circuit is off, this after
From originator circuit and isolation circuit, when ensureing that originator circuit normal work carries out the transmission of high-speed electrical signals, not by isolation electricity
The influence on road.
It should be understood that the invention is not limited in the precision architectures for being described above and being shown in the accompanying drawings, and
And various modifications and change can be being executed without departing from the scope.The scope of the present invention is limited only by the attached claims.
Claims (10)
1. a kind of optical module includes the PCBA board of emitting laser component and carrying high speed signal driving chip, the PCBA board
High-speed electrical signals are sent to the emitting laser component, which is characterized in that in the PCBA board and emitting laser component group
At originator circuit in series connection access program-controlled resistor, by the adjusting of the program-controlled resistor, to adjust the resistance of the originator circuit
It is anti-.
2. optical module according to claim 1, which is characterized in that the optical module further includes isolation circuit, the isolation
Circuit is connect with the originator circuit, for adjusting the concatenated program-controlled resistor of the originator circuit.
3. optical module according to claim 2, which is characterized in that the isolation circuit includes：Switching tube and adjusting control
Device；
There are two the switching tubes, is controlled by Enable signals, when the switching tube receives Enable signals, is on
State is off when the switching tube does not receive Enable signals；
The adjusting control device is used to adjust the program-controlled resistor for the originator circuit being connect with the isolation circuit.
4. optical module according to claim 3, which is characterized in that the switching tube is triode, the base of first switch pipe
Pole is connect with the first micro-control unit for generating Enable signals, and collector is connect with power supply, emitter and the originator
One end of circuit connects；
Second switch pipe is connect with the second micro-control unit for generating Enable signals, and collector is another with the originator circuit
One end connects, and emitter is connect with ground terminal.
5. a kind of impedance matching methods, are applied to optical module, the optical module includes that emitting laser component and carrying high speed are believed
The PCBA board of number driving chip, the PCBA board send high-speed electrical signals to the emitting laser component, which is characterized in that institute
The method of stating includes：
It connects in the originator circuit that the PCBA board is formed with emitting laser component and accesses program-controlled resistor；
Monitor the impedance of the originator circuit；
When the difference between the impedance and matches criteria impedance of the originator circuit is more than range of tolerable variance, by adjusting the journey
Resistance is controlled, to adjust the impedance of the originator circuit.
6. according to the method described in claim 5, it is characterized in that, described form in the PCBA board and emitting laser component
Originator circuit in series connection access program-controlled resistor after, the method further includes：
It keeps the initial value of the program-controlled resistor constant, it is straight to adjust line impedance of the originator circuit in addition to the program-controlled resistor
To high-speed electrical signals optimal quality, at this time using the impedance of the originator circuit as matches criteria impedance.
7. according to the method described in claim 5, it is characterized in that, described when the impedance of the originator circuit is hindered with matches criteria
When difference between anti-is more than range of tolerable variance, by adjusting the program-controlled resistor, the impedance to adjust the originator circuit includes：
Calculate the difference between the impedance and matches criteria impedance of the originator circuit；
When the difference is more than range of tolerable variance, the program-controlled resistor is adjusted according to specified regulated value to adjust the originator electricity
The impedance on road.
8. the method according to the description of claim 7 is characterized in that the impedance for calculating the originator circuit and matches criteria
After difference between impedance, the method further includes：
When the difference between the impedance and matches criteria impedance of the originator circuit is less than range of tolerable variance, without the journey
Control the adjusting of resistance.
9. the method according to the description of claim 7 is characterized in that the regulated value includes top adjustment value and high adjustment value, institute
The maximum value that high adjustment value is less than the range of tolerable variance is stated, it is described when the difference is more than range of tolerable variance, according to specified tune
Section value adjusts the program-controlled resistor, and to adjust, the impedance of the originator circuit is excellent to include：
When the absolute value of the difference is more than the top adjustment value, the program-controlled resistor is adjusted according to the top adjustment value；
When the absolute value of the difference is more than the high adjustment value and is less than the top adjustment value, according to the small resistance value
The program-controlled resistor is adjusted until the difference is less than range of tolerable variance.
10. according to the method described in claim 5, it is characterized in that, the isolation circuit is used for：
When the isolation circuit is in the conduction state, between the impedance and matches criteria impedance that monitor the originator circuit
When difference is more than range of tolerable variance, by adjusting the program-controlled resistor, to adjust the impedance of the originator circuit；
When the isolation circuit is off, the originator circuit and the isolation circuit is isolated.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112398541A (en) * | 2020-11-05 | 2021-02-23 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN114112319A (en) * | 2021-06-08 | 2022-03-01 | 青岛海信宽带多媒体技术有限公司 | Laser instrument test system |
| CN114545569A (en) * | 2020-11-27 | 2022-05-27 | 青岛海信宽带多媒体技术有限公司 | Optical module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326236A (en) * | 2013-06-19 | 2013-09-25 | 华中科技大学 | Semiconductor laser unit modulating and driving system |
| CN203872044U (en) * | 2014-05-13 | 2014-10-08 | 武汉洛芙科技股份有限公司 | Fiber laser power supply driving circuit |
| CN105577138A (en) * | 2015-12-08 | 2016-05-11 | 天津津航计算技术研究所 | Self-adaptive dynamic impedance matching method |
| CN106125213A (en) * | 2016-08-26 | 2016-11-16 | 青岛海信宽带多媒体技术有限公司 | A kind of optical module |
-
2018
- 2018-02-09 CN CN201810132872.1A patent/CN108418636B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326236A (en) * | 2013-06-19 | 2013-09-25 | 华中科技大学 | Semiconductor laser unit modulating and driving system |
| CN203872044U (en) * | 2014-05-13 | 2014-10-08 | 武汉洛芙科技股份有限公司 | Fiber laser power supply driving circuit |
| CN105577138A (en) * | 2015-12-08 | 2016-05-11 | 天津津航计算技术研究所 | Self-adaptive dynamic impedance matching method |
| CN106125213A (en) * | 2016-08-26 | 2016-11-16 | 青岛海信宽带多媒体技术有限公司 | A kind of optical module |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112398541A (en) * | 2020-11-05 | 2021-02-23 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN114545569A (en) * | 2020-11-27 | 2022-05-27 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN114112319A (en) * | 2021-06-08 | 2022-03-01 | 青岛海信宽带多媒体技术有限公司 | Laser instrument test system |
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