CN107634447B - A kind of acquisition device and its acquisition methods of optical module eye figure compensated curve - Google Patents
A kind of acquisition device and its acquisition methods of optical module eye figure compensated curve Download PDFInfo
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- CN107634447B CN107634447B CN201710860260.XA CN201710860260A CN107634447B CN 107634447 B CN107634447 B CN 107634447B CN 201710860260 A CN201710860260 A CN 201710860260A CN 107634447 B CN107634447 B CN 107634447B
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Abstract
The present invention relates to the acquisition device and its acquisition methods of a kind of optical module eye figure compensated curve, including main control unit, database, temperature control tooling and ophthalmograp, the database, the temperature control tooling and the ophthalmograp are connect with the main control unit respectively, and the signal output end of the temperature control tooling is connect with the signal input part of the ophthalmograp.The beneficial effects of the present invention are: according to application scenarios and design object, after having planned temperature spot and eye pattern mask target value, target temperature setting is carried out to temperature control tooling, after connecting platform position, it can be tested automatically, the compensated curve of optical module eye figure can be accurately obtained, full-automatic test method improves the efficiency and accuracy of test, improves the yield and performance of optical module.
Description
Technical field
The present invention relates to the acquisition device of technical field of photo communication more particularly to a kind of optical module eye figure compensated curve and its
Acquisition methods.
Background technique
Optical module in use, with temperature variation, MCU (microprocessing unit) need transmitting optical power to optical module and
Extinction ratio compensates, to guarantee the transmitting optical power of optical module and the stabilization of extinction ratio.Adjust the transmitting optical power of optical module
When with extinction ratio, by adjust optical module inside LD (Laser Diode, laser diode) chip adjustable potentiometer or
Person's non-essential resistance is configured；When the temperature is changed, the Slop efficiency of LD chip can change, in order to keep the transmitting of optical module
The stabilization of optical power needs to compensate the bias current of optical module.Since the bias current of optical module changes, in order to maintain
The stabilization of the transmitting extinction ratio of optical module needs the modulation electric current to optical module to compensate.
Currently, the compensation way of the modulation electric current of compensation optical module is general are as follows: temperature lookup table, k-factor compensation, temperature-sensitive electricity
Resistance etc.；Since the compensation way is linear compensation, in a practical situation, due to the otherness and consistency of LD chip, have
Under high temperature environment, the bias current and modulation electric current of optical module will appear nonlinear feature, therefore, MCU to part optical module
It will appear biggish deviation by linear compensation, lead to the unstable of the extinction ratio of optical module, mistake is easy to appear in communication process
Code.
Summary of the invention
The technical problem to be solved by the present invention is to solve the above shortcomings of the prior art and to provide a kind of optical module eye figure benefits
The acquisition device and its acquisition methods of curve are repaid, the compensated curve of laser can be fast and accurately obtained, overcome manual testing
Obtain the deficiency of offset.
The technical scheme to solve the above technical problems is that
According to one aspect of the present invention, a kind of acquisition device of optical module eye figure compensated curve, including master control are provided
Unit, database, temperature control tooling and ophthalmograp processed, the database, the temperature control tooling and the ophthalmograp respectively with it is described
Main control unit connection, the signal output end of the temperature control tooling are connect with the signal input part of the ophthalmograp.
Based on the above technical solution, the present invention can also be improved as follows.
It further, include MCU Operations Analysis, LD temperature sensor, LD driving temperature sensing in the temperature control tooling
Device, the MCU Operations Analysis are connect with the main control unit, and the LD temperature sensor, the LD driving temperature pass
Sensor is connected with the MCU Operations Analysis respectively；The LD temperature sensor, LD driving temperature sensor difference
It is connected with the ophthalmograp.
Further, further include LD and LD driver in the temperature control tooling, the LD and the LD driver with it is described
MCU Operations Analysis is connected；The LD and the LD driver are connected with the ophthalmograp；The LD and LD
Temperature sensor is connected, and the LD driver is connected with the LD driving temperature sensor.
Further, the LD temperature sensor can be the temperature sensor inside the LD, described accurately to obtain
The real-time temperature values of LD.
Further, the LD driving temperature sensor can be the temperature sensor of the LD internal drive, to standard
Really obtain the real-time temperature values of the LD driver.
Further, the ophthalmograp includes ophthalmograp optical port and ophthalmograp power port, the signal input of the ophthalmograp optical port
End connect with the signal output end of the LD temperature sensor and/or the LD, the signal input part of the ophthalmograp power port and
The connection of the signal output end of the LD driving temperature sensor and/or the LD driver；The main control unit respectively with institute
State ophthalmograp optical port, the ophthalmograp power port is connected.
Further, the main control unit is operating system or embedded system.
Further, the temperature control tooling is that quickly temperature becomes device or temperature follows case.
According to another aspect of the invention, a kind of acquisition methods of optical module eye figure compensated curve are provided, including with
Lower step:
S01: main control unit controls the temperature value of setting temperature control tooling by data-interface, and generates target temperature number
It is worth table, is written in database；
S02: main control unit reads the index of ophthalmograp power port, and the electric eye map values that will acquire and is stored in database
Electric eye figure target value be compared, judge whether the electric eye map values obtained reach the requirement of electric eye figure target value；
S03: if the electric eye map values obtained are not up to electric eye figure target value, main control unit can pass through MCU operation control
Unit adjusts the numerical value of the data output register of LD driving temperature sensor and/or LD driver, changes output electric signal,
Electric eye figure is set to change；
S04: circulation carries out the step S02 and step S03, until the electric eye map values obtained reach electric eye figure target
The requirement of value；
S05: after the electric eye map values of acquisition reach the requirement of target value, main control unit reads the finger of ophthalmograp optical port
Mark, and the light eye map values that will acquire are compared with the light eye figure target value being stored in database, judge the light eye figure obtained
Whether value reaches the requirement of light eye figure target value；
S06: if the light eye map values obtained are not up to light eye figure target value, main control unit can pass through MCU operation control
Unit adjusts the numerical value of the driving current delivery outlet register of LD driving temperature sensor and/or LD driver, changes output and drives
The size of streaming current makes light eye figure change；
S07: circulation carries out the step S05 and step S06, until the light eye map values obtained reach light eye figure target
The requirement of value；
S08: main control unit read respectively LD driving temperature sensor and/or LD driver, LD temperature sensor and/or
The temperature value of LD, and the parameter value write-in database that will acquire；
S09: main control unit judges all target temperature by the target temperature numerical tabular inquired in the step S01
Whether degree point has all been completed, if being completed, terminates to test, obtains optical module eye figure compensated curve；If no
It is completed, then recycles and carry out the step S01 to the step S08, until all target temperature points are completed.
Based on the above technical solution, the present invention can also be improved as follows.
Further, the parameter value for database being written in the step S08 includes LD temperature value, LDD driver temperature number
Value, offset and port Configuration Values.
The beneficial effects of the present invention are: the present invention is by having planned temperature spot and eye according to application scenarios and design object
After artwork plate target value, target temperature setting is carried out to temperature control tooling, after connecting platform position, can be tested automatically, it can
The accurate compensated curve for obtaining optical module eye figure, improves the compensation effect to optical module；In addition, full-automatic test side
Method improves the efficiency and accuracy of test, reduces the situation that bring low efficiency, error are big due to manual operation, improves
The yield and performance of optical module.
Detailed description of the invention
Fig. 1 is a kind of acquisition device of optical module eye figure compensated curve of the present invention and its apparatus module figure of acquisition methods；
Fig. 2 is a kind of acquisition device of optical module eye figure compensated curve of the present invention and its method flow diagram of acquisition methods；
Fig. 3 is a kind of acquisition device of optical module eye figure compensated curve of the present invention and its LD temperature-current of acquisition methods
Compensated curve；
Fig. 4 is a kind of acquisition device of optical module eye figure compensated curve of the present invention and its LDD temperature-port of acquisition methods
Configure curve；
Fig. 5 is that a kind of acquisition device of optical module eye figure compensated curve of the present invention and its embodiment one of acquisition methods compensate
Preceding optical module eye figure；
Fig. 6 is that a kind of acquisition device of optical module eye figure compensated curve of the present invention and its embodiment one of acquisition methods compensate
Optical module eye figure afterwards.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
It to a kind of acquisition device of optical module eye figure compensated curve provided in this embodiment and its is obtained below in conjunction with attached drawing
Method is taken to be described in detail.
As shown in Figure 1, a kind of acquisition device of optical module eye figure compensated curve comprising main control unit 1, database 2,
Temperature control tooling 3 and ophthalmograp, the database 2, the temperature control tooling 3 and the ophthalmograp respectively with the main control unit 1
Connection, the signal output end of the temperature control tooling 3 are connect with the signal input part of the ophthalmograp.
It include MCU Operations Analysis 31, LD temperature sensor 32, LD driving temperature sensor in the temperature control tooling 3
35, the MCU Operations Analysis 31 is connect with the main control unit 1, the LD temperature sensor 32, LD driving temperature
Degree sensor 35 is connected with the MCU Operations Analysis 31 respectively；The LD temperature sensor 32, the LD driving temperature
Sensor 35 is connected with the ophthalmograp respectively.
It further include LD33 and LD driver 34 in the temperature control tooling 3, the LD33 and the LD driver 34 are and institute
MCU Operations Analysis 31 is stated to be connected；The LD33 and the LD driver 34 are connected with the ophthalmograp；It is described
LD33 is connected with the LD temperature sensor 32, and the LD driver 34 is connected with the LD driving temperature sensor 35.
Temperature value of the LD temperature sensor 32 for LD33 described in real-time measurement, the LD driving temperature sensor
35 temperature value for LD driver 34 described in real-time measurement.
In the present embodiment, the LD temperature sensor 32 can be the temperature sensor inside the LD33, to standard
Really obtain the real-time temperature values of the LD33；The LD driving temperature sensor 35 can be the temperature inside the LD driver 34
Sensor is spent, accurately to obtain the real-time temperature values of the LD driver 34.
The ophthalmograp includes ophthalmograp optical port 4 and ophthalmograp power port 5, the signal input part of the ophthalmograp optical port 4 with
The signal output end of the LD temperature sensor 32 and/or the LD33 connection, the signal input part of the ophthalmograp power port 5 with
The connection of the signal output end of the LD driving temperature sensor 35 and/or the LD driver 34；The main control unit 1 is distinguished
It is connected with the ophthalmograp optical port 4, the ophthalmograp power port 5.
The main control unit 1 is connect with the database 2, for reading and writing and saving presets number into the database 2
According to and obtain real time data.
The main control unit 1 is connected with the ophthalmograp optical port 4, the ophthalmograp power port 5, for reading the eye
The data of figure instrument optical port 4, the ophthalmograp power port 5, while being also used to be arranged the ophthalmograp optical port 4, the ophthalmograp power port 5
Parameter.
The main control unit 1 is connected with the MCU Operations Analysis 31, is used for the MCU operation control list
Data needed for member 31 sends and acquires.
The main control unit 1 is connected with the temperature control tooling 3, for acquiring and controlling the temperature control tooling 3 in real time
Temperature value.
The MCU Operations Analysis 31 is connected with the LD temperature sensor 32 and/or the LD33, is used for institute
It states LD temperature sensor 32 and/or the LD33 sends the real time temperature data of control instruction and acquisition.
The MCU Operations Analysis 31 is connected with the LD driving temperature sensor 35 and/or the LD driver 34
It connects, for sending the real-time temperature of control instruction and acquisition to the LD driving temperature sensor 35 and/or the LD driver 34
Degree evidence.
The LD temperature sensor 32 and/or the LD33 are connected with the ophthalmograp optical port 4, for observing and sending
Light eye figure.
The LD driving temperature sensor 35 and/or the LD driver 34 are connected with the ophthalmograp power port 5, are used for
Test sends the electric eye figure of data.
The main control unit 1 is operating system or embedded system, and specific structure and control principle are existing public affairs
Know technology, details are not described herein；The temperature control tooling 3 is that quickly temperature becomes device or temperature follows case, specific structure and control principle
For existing well-known technique, details are not described herein；Data-interface between the main control unit 1 and the temperature control tooling 3 is USB
Data-interface, I2C data interface, serial ports or other data-interfaces.
As shown in Fig. 2, a kind of acquisition methods of optical module eye figure compensated curve comprising following steps:
S01: main control unit 1 controls the temperature value of setting temperature control tooling 3 by data-interface, and generates target temperature
Numerical tabular is written in database 2；
S02: main control unit 1 reads the index of ophthalmograp power port 5, and the electric eye map values that will acquire and is stored in database
Electric eye figure target value in 2 is compared, and judges whether the electric eye map values obtained reach the requirement of electric eye figure target value；
S03: if the electric eye map values obtained are not up to electric eye figure target value, main control unit 1 can pass through MCU operation control
Unit 31 adjusts the numerical value of the data output register of LD driving temperature sensor 35 and/or LD driver 34, changes output
Electric signal makes electric eye figure change；
S04: circulation carries out the step S02 and step S03, until the electric eye map values obtained reach electric eye figure target
The requirement of value；
S05: after the electric eye map values of acquisition reach the requirement of target value, main control unit 1 reads the finger of ophthalmograp optical port 4
Mark, and the light eye map values that will acquire are compared with the light eye figure target value being stored in database 2, judge the light eye figure obtained
Whether value reaches the requirement of light eye figure target value；
S06: if the light eye map values obtained are not up to light eye figure target value, main control unit 1 can pass through MCU operation control
Unit 31 adjusts the numerical value of the driving current delivery outlet register of LD driving temperature sensor 35 and/or LD driver 34, changes
The size of output driving current makes light eye figure change；
S07: circulation carries out the step S05 and step S06, until the light eye map values obtained reach light eye figure target
The requirement of value；
S08: main control unit 1 reads LD driving temperature sensor 35 and/or LD driver 34, LD temperature sensor respectively
The temperature value of 32 and/or LD33, and the parameter value write-in database 2 that will acquire；
S09: main control unit 1 judges all target temperature by the target temperature numerical tabular inquired in the step S01
Whether degree point has all been completed, if being completed, terminates to test, obtains optical module eye figure compensated curve；If no
It is completed, then recycles and carry out the step S01 to the step S08, until all target temperature points are completed.
Specifically, the specific operation process of the step S01 is the target temperature that main control unit 1 acquires as needed
Point sends control instruction to temperature control tooling 3, and temperature control tooling 3 makes according to the target instruction target word received, starting device temperature control system
Temperature in temperature control tooling 3 maintains within the scope of target temperature value.
Specifically, the detailed process that main control unit 1 reads 5 index of ophthalmograp power port in the step S02 is main control
Unit 1 sends setting parameter value to ophthalmograp power port 5, and ophthalmograp power port 5 is according to required setting parameter measurement electric eye figure
Parameter, and by measurement feedback to main control unit 1.
Ophthalmograp power port 5 is digital storage oscilloscope, and main control unit 1 and the communication interface of ophthalmograp power port 5 connect for USB
Other interfaces that mouth or ophthalmograp provide.
LD driver can be single driver, be also possible to the driver of All-in-One.
Specifically, the detailed process that main control unit 1 reads 4 index of ophthalmograp optical port in the step S05 is main control
Unit 1 sends setting parameter value to ophthalmograp optical port 4, and ophthalmograp optical port 4 is according to required setting parameter measurement light eye figure
Parameter, and by measurement feedback to main control unit 1.
Ophthalmograp optical port 4 is the digital storage oscilloscope with optical mode group, the communication of main control unit 1 and ophthalmograp optical port 4
Interface is other interfaces that USB interface or ophthalmograp provide.
Specifically, the parameter value that database 2 is written in the step S08 includes LD temperature value, LDD driver temperature number
Value, offset and port Configuration Values.
Specifically, the parameter that electric eye figure and light eye figure change in the step S03 and step S06 includes eye figure
Size, shake, crosspoint, rise/fall edge.
As shown in Figure 3 and Figure 4, the LD temperature-obtained respectively for the test by the step S01 to the step S08
Current compensation curve, LDD temperature-port configure curve, and You Tuzhong curve can be seen that the compensated curve that test obtains can be right
The characteristic of optical device and driving circuit does fine compensation.
Embodiment one, by taking 10G SFP optical module as an example, circulation carries out step S01 to step S08, obtains in 85 DEG C of high temperature
Optical module eye figure.
As shown in Figure 5 and Figure 6, respectively 10G SFP optical module compensates front and back by optical module eye figure in 85 DEG C of high temperature
Optical module eye figure, from fig. 6 it can be seen that by the eye shape of optical module eye figure of eye figure compensation, shake, crosspoint,
Apparent improve occurs for the parameters such as rise/fall edge.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of acquisition device of optical module eye figure compensated curve, which is characterized in that including main control unit (1), database
(2), temperature control tooling (3) and ophthalmograp, the database (2), the temperature control tooling (3) and the ophthalmograp respectively with the master
Control unit (1) connection, the signal output end of the temperature control tooling (3) are connect with the signal input part of the ophthalmograp；It is described
It include MCU Operations Analysis (31), LD temperature sensor (32), LD driving temperature sensor (35), institute in temperature control tooling (3)
It states MCU Operations Analysis (31) to connect with the main control unit (1), the LD temperature sensor (32), LD driving
Temperature sensor (35) is connected with the MCU Operations Analysis (31) respectively；The LD temperature sensor (32), the LD
Driving temperature sensor (35) is connected with the ophthalmograp respectively.
2. a kind of acquisition device of optical module eye figure compensated curve according to claim 1, it is characterised in that: the temperature control work
Further include LD (33) and LD driver (34) in dress (3), the LD (33) and the LD driver (34) with the MCU operation
Control unit (31) is connected；The LD (33) and the LD driver (34) are connected with the ophthalmograp；The LD
(33) it is connected with the LD temperature sensor (32), the LD driver (34) and LD driving temperature sensor (35) phase
Connection.
3. a kind of acquisition device of optical module eye figure compensated curve according to claim 2, it is characterised in that: the LD temperature
Sensor (32) can be the temperature sensor of the LD (33) inside, accurately to obtain the real time temperature of (33) the LD
Value.
4. a kind of acquisition device of optical module eye figure compensated curve according to claim 2, it is characterised in that: the LD driving
Temperature sensor (35) can be the temperature sensor of LD driver (34) inside, accurately to obtain the LD driver
(34) real-time temperature values.
5. a kind of acquisition device of optical module eye figure compensated curve according to claim 2, it is characterised in that: the ophthalmograp
Including ophthalmograp optical port (4) and ophthalmograp power port (5), the signal input part of the ophthalmograp optical port (4) and the LD temperature are passed
The connection of the signal output end of sensor (32) and/or the LD (33), the signal input part and the LD of the ophthalmograp power port (5)
The connection of the signal output end of driving temperature sensor (35) and/or the LD driver (34)；The main control unit (1) is respectively
It is connected with the ophthalmograp optical port (4), the ophthalmograp power port (5).
6. a kind of acquisition device of optical module eye figure compensated curve according to claim 5, it is characterised in that: the main control
Unit (1) is operating system or embedded system.
7. a kind of acquisition device of optical module eye figure compensated curve according to claim 2, it is characterised in that: the temperature control work
Dress (3) is that quickly temperature becomes device or temperature follows case.
8. a kind of a kind of acquisition side of the acquisition device of optical module eye figure compensated curve according to any one of claims 1 to 7
Method, which comprises the following steps:
S01: main control unit (1) controls the temperature value of setting temperature control tooling (3) by data-interface, and generates target temperature
Numerical tabular is written in database (2)；
S02: main control unit (1) reads the index of ophthalmograp power port (5), and the electric eye map values that will acquire and is stored in database
(2) the electric eye figure target value in is compared, and judges whether the electric eye map values obtained reach the requirement of electric eye figure target value；
S03: if the electric eye map values obtained are not up to electric eye figure target value, main control unit (1) can pass through MCU operation control list
The numerical value of the data output register of first (31) adjustment LD driving temperature sensor (35) and/or LD driver (34), changes
Electric signal is exported, electric eye figure is made to change；
S04: circulation carries out the step S02 and step S03, until the electric eye map values obtained reach electric eye figure target value
It is required that；
S05: after the electric eye map values of acquisition reach the requirement of target value, main control unit (1) reads the finger of ophthalmograp optical port (4)
Mark, and the light eye map values that will acquire are compared with the light eye figure target value being stored in database (2), judge the light eye obtained
Whether map values reach the requirement of light eye figure target value；
S06: if the light eye map values obtained are not up to light eye figure target value, main control unit (1) can pass through MCU operation control list
The numerical value of the driving current delivery outlet register of first (31) adjustment LD driving temperature sensor (35) and/or LD driver (34),
The size for changing output driving current, makes light eye figure change；
S07: circulation carries out the step S05 and step S06, until the light eye map values obtained reach light eye figure target value
It is required that；
S08: main control unit (1) reads LD driving temperature sensor (35) and/or LD driver (34), LD temperature sensing respectively
The temperature value of device (32) and/or LD (33), and parameter value write-in database (2) that will acquire；
S09: main control unit (1) judges all target temperatures by the target temperature numerical tabular inquired in the step S01
Whether point has all been completed, if being completed, terminates to test, and obtains optical module eye figure compensated curve；If not surveying
Examination finishes, then recycles and carry out the step S01 to the step S08, until all target temperature points are completed.
9. a kind of acquisition methods of optical module eye figure compensated curve according to claim 8, it is characterised in that: the step
The parameter value that database (2) are written in S08 includes LD temperature value, LDD driver temperature value, offset and port configuration
Value.
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| CN102970080A (en) * | 2012-10-31 | 2013-03-13 | 青岛海信宽带多媒体技术有限公司 | Optical module and adjusting method of working temperature of laser thereof |
| CN103078249A (en) * | 2013-01-06 | 2013-05-01 | 青岛海信宽带多媒体技术有限公司 | Method and device for generating temperature lookup table of optical module |
| CN106027157A (en) * | 2016-05-16 | 2016-10-12 | 青岛海信宽带多媒体技术有限公司 | Current compensation method for optical module and optical module |
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| JP2004273631A (en) * | 2003-03-06 | 2004-09-30 | Opnext Japan Inc | Direct modulation type optical module |
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| CN102970080A (en) * | 2012-10-31 | 2013-03-13 | 青岛海信宽带多媒体技术有限公司 | Optical module and adjusting method of working temperature of laser thereof |
| CN103078249A (en) * | 2013-01-06 | 2013-05-01 | 青岛海信宽带多媒体技术有限公司 | Method and device for generating temperature lookup table of optical module |
| CN106027157A (en) * | 2016-05-16 | 2016-10-12 | 青岛海信宽带多媒体技术有限公司 | Current compensation method for optical module and optical module |
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