CN207475556U - A kind of multichannel optical module automatic testing equipment based on MCU - Google Patents
A kind of multichannel optical module automatic testing equipment based on MCU Download PDFInfo
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- CN207475556U CN207475556U CN201721590217.8U CN201721590217U CN207475556U CN 207475556 U CN207475556 U CN 207475556U CN 201721590217 U CN201721590217 U CN 201721590217U CN 207475556 U CN207475556 U CN 207475556U
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Abstract
The utility model is related to a kind of multichannel optical module automatic testing equipments based on MCU, including MCU, PC machine, driver, laser, Multichannel optical power meter, sampling oscilloscope and Error Detector, PC machine is connected by USB with MCU, PC machine also respectively with Error Detector, Multichannel optical power meter is connected with sampling oscilloscope, Error Detector transmits differential signal to driver, driver is connected by universal serial bus and with MCU, driver is also connected with laser, the light that laser is sent out forms transmitting multichannel by Lens Coupling to optical fiber, the transmitting multichannel is connect with Multichannel optical power meter or sampling oscilloscope.Automatic test approach can be used in the utility model, makes the lower multichannel luminous power of the full temperature of optical module and extinction ratio coherence enhancing, stability good, improves product quality, reduce production test link, reduce manpower, improve efficiency.
Description
Technical field
The utility model is related to optical module technical fields, and in particular to a kind of multichannel optical module based on MCU is surveyed automatically
Trial assembly is put.
Background technology
Average light power and extinction ratio are technical indicators important in optical module, and different clients is to luminous power and extinction ratio
There is different setting demands.It is supplied to laser bias current and modulation electric current can it is found that adjusting by the operation principle of laser
Adjust mean power and extinction ratio.In the case that previous single channel or port number are less, inspection is passed through using APC closed loop control methods
The size for the back facet current that backlight diode generates is surveyed to adjust bias current, so as to achieve the effect that stable luminous power.Modulation
The size of electric current can be determined by the method for temperature-compensating.But in the application of array multichannel, due to chip and chip
Between and channel with interchannel be discrepant, also variant and the position in coupling process deviation between laser all can shadow
Ring the consistency of channel optical power.So only by detecting the size of back facet current to stablize luminous power be inadequate.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of multichannel optical modules based on MCU to test dress automatically
It puts, solves the problems, such as that the size of back facet current that detection backlight diode generates can not really reflect luminous power.
The technical solution that the utility model solves above-mentioned technical problem is as follows：A kind of multichannel optical module based on MCU is certainly
Dynamic test device, it is described including MCU, PC machine, driver, laser, Multichannel optical power meter, sampling oscilloscope and Error Detector
PC machine is connected by USB with MCU, and the PC machine is also connected with Error Detector, Multichannel optical power meter and sampling oscilloscope respectively, institute
It states Error Detector and transmits differential signal to driver, the driver is connected by universal serial bus with MCU, and the driver is also with swashing
Light device is connected, the light that the laser is sent out by Lens Coupling to optical fiber formed transmitting multichannel, it is described transmitting multichannel with
Multichannel optical power meter or sampling oscilloscope connection.
Based on the above technical solution, the utility model can also do following improvement.
Further, the MCU, driver and laser are by together with wire bonding.
Taking the advantageous effect of above-mentioned further scheme is：Reduce optical module volume, increase the applicable environment of module.
Further, the MCU is also connected with temperature sensor.
Taking the advantageous effect of above-mentioned further scheme is：Temperature sensor can collecting temperature value, MCU according to temperature value from
Suitable bias current and modulation electric current Configuration Values are searched in linear list.
The beneficial effects of the utility model are：In the utility model, the driving circuit that laser gives driver converts
It goes out into Laser emission, the differential signal of reception is converted to driving current by driver according to bias current and modulation electric current setting
Laser is supplied to, MCU is data protocol switching center, by parsing the PC end datas received, changes into universal serial bus setting and drives
Dynamic device, PC machine acquisition sampling oscilloscope, light power meter data, setting sampling oscilloscope, light power meter, Error Detector parameter will adopt
The data of collection are sent to MCU by USB, and sampling oscilloscope acquires the extinction ratio of optical signal, is sampled for PC machine, light power meter acquisition
The power of optical signal is sampled for PC machine, and Error Detector sends the differential signal of certain pattern to driver.The utility model can be used
Automatic test approach makes the lower multichannel luminous power of the full temperature of optical module and extinction ratio coherence enhancing, stability good, improves product
Quality reduces production test link, reduces manpower, improves efficiency.
Description of the drawings
Fig. 1 is the block diagram of the utility model.
Specific embodiment
The principle and feature of the utility model are described below in conjunction with attached drawing, example is served only for explaining this practicality
It is novel, it is not intended to limit the scope of the utility model.
As shown in Figure 1, a kind of multichannel optical module automatic testing equipment based on MCU, including MCU, PC machine, driver,
Laser, Multichannel optical power meter, sampling oscilloscope and Error Detector, PC machine are connected by USB with MCU, and PC machine is also respectively with missing
Code instrument, Multichannel optical power meter are connected with sampling oscilloscope, and Error Detector transmits differential signal to driver, driver universal serial bus
It is connected with the AD conversion pin of MCU, driver is also connected with laser, and the light that laser is sent out passes through Lens Coupling to optical fiber shape
Multichannel optical power meter or sampling oscilloscope are connected into transmitting multichannel, and by transmitting multichannel.
In the utility model embodiment, MCU, driver and laser are by together with wire bonding.
In the utility model embodiment, MCU is also connected with temperature sensor；Temperature sensor can collecting temperature value, MCU
Suitable bias current and modulation electric current Configuration Values are searched from linear list according to temperature value.
In the utility model embodiment, the driving circuit that driver is given is converted to Laser emission and gone out by laser, is driven
The differential signal of reception is converted to driving current and is supplied to laser, MCU by dynamic device according to bias current and modulation electric current setting
It is data protocol switching center, by parsing the PC end datas received, changes into universal serial bus setting driver, PC machine acquisition sampling
Oscillograph, light power meter data, setting sampling oscilloscope, light power meter, Error Detector parameter, the data of acquisition are sent out by USB
MCU is given, sampling oscilloscope acquires the extinction ratio of optical signal, is sampled for PC machine, and light power meter acquires the power of optical signal, for PC
Machine samples, and Error Detector sends the differential signal of certain pattern to driver.The utility model uses automatic test approach, makes optical mode
The lower multichannel luminous power of the full temperature of block and extinction ratio coherence enhancing, stability are good, improve product quality, reduce production test
Link reduces manpower, improves efficiency.
The operation principle of the utility model is：
S1, by the bias currents of MCU configuration driven devices and modulation current value, make each channel Configuration Values consistent.
S2, transmitting multichannel is connected to Multichannel optical power meter, the luminous power of detection transmitting multichannel ensures laser
Consistency in coupling process.
S3, the performance number for each channel light that Multichannel optical power meter is read is obtained by PC machine and is sent to MCU, adjusted
For MCU to the bias current of driver, the luminous power for making each channel is consistent.
S4, transmitting multichannel is connected to sampling oscilloscope, and opens Error Detector and send differential signal to each channel.
S5, the delustring ratio for reading each channel by PC machine are concurrently sent to MCU, adjustment MCU to the modulation electric current of driver,
The extinction ratio for making each channel is consistent.
S6, the bias current value of driver and modulation current value in the case where full temperature records each temperature section, and according to line
The mode of property table is recorded in PC machine.
S7, the embedded program of MCU is updated to actual operation procedure.
S8, the temperature value that driver is acquired using temperature sensor simultaneously search linear list, and using gradient according to temperature value
Method sets bias current and modulation electric current, ensures the consistency and stability of each channel optical power and extinction ratio under full temperature.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (3)
1. a kind of multichannel optical module automatic testing equipment based on MCU, which is characterized in that including MCU, PC machine, driver, swash
Light device, Multichannel optical power meter, sampling oscilloscope and Error Detector, the PC machine are connected by USB with MCU, and the PC machine is also divided
It is not connected with Error Detector, Multichannel optical power meter and sampling oscilloscope, the Error Detector transmits differential signal to driver, described
Driver is connected by universal serial bus with MCU, and the driver is also connected with laser, and the light that the laser is sent out passes through saturating
Mirror is coupled to optical fiber and forms transmitting multichannel, and the transmitting multichannel is connect with Multichannel optical power meter or sampling oscilloscope.
2. the multichannel optical module automatic testing equipment according to claim 1 based on MCU, which is characterized in that described
MCU, driver and laser are by together with wire bonding.
3. the multichannel optical module automatic testing equipment according to claim 1 based on MCU, which is characterized in that the MCU
Also it is connected with temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721590217.8U CN207475556U (en) | 2017-11-23 | 2017-11-23 | A kind of multichannel optical module automatic testing equipment based on MCU |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721590217.8U CN207475556U (en) | 2017-11-23 | 2017-11-23 | A kind of multichannel optical module automatic testing equipment based on MCU |
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| CN207475556U true CN207475556U (en) | 2018-06-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769850A (en) * | 2017-11-23 | 2018-03-06 | 成都嘉纳海威科技有限责任公司 | A kind of multichannel optical module automatic testing equipment and method based on MCU |
| CN108923850A (en) * | 2018-06-14 | 2018-11-30 | 烽火通信科技股份有限公司 | Parallel multi-channel optical module test device for 40Gbs, 100Gbs, 120Gbs |
| WO2020083033A1 (en) * | 2018-10-23 | 2020-04-30 | 京东方科技集团股份有限公司 | Wearable device, optical module and driving method therefor |
| CN111880163A (en) * | 2020-07-02 | 2020-11-03 | 深圳市速腾聚创科技有限公司 | Method and system for detecting performance of transmitting device |
-
2017
- 2017-11-23 CN CN201721590217.8U patent/CN207475556U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769850A (en) * | 2017-11-23 | 2018-03-06 | 成都嘉纳海威科技有限责任公司 | A kind of multichannel optical module automatic testing equipment and method based on MCU |
| CN107769850B (en) * | 2017-11-23 | 2024-02-27 | 成都嘉纳海威科技有限责任公司 | MCU-based multichannel optical module automatic testing device and method |
| CN108923850A (en) * | 2018-06-14 | 2018-11-30 | 烽火通信科技股份有限公司 | Parallel multi-channel optical module test device for 40Gbs, 100Gbs, 120Gbs |
| CN108923850B (en) * | 2018-06-14 | 2020-01-21 | 烽火通信科技股份有限公司 | Parallel multi-channel optical module testing device for 40Gbs, 100Gbs and 120Gbs |
| WO2020083033A1 (en) * | 2018-10-23 | 2020-04-30 | 京东方科技集团股份有限公司 | Wearable device, optical module and driving method therefor |
| US11016254B2 (en) | 2018-10-23 | 2021-05-25 | Beijing Boe Optoelectronics Technology Co., Ltd. | Wearable device, optical module and driving method thereof |
| CN111880163A (en) * | 2020-07-02 | 2020-11-03 | 深圳市速腾聚创科技有限公司 | Method and system for detecting performance of transmitting device |
| CN111880163B (en) * | 2020-07-02 | 2023-01-03 | 深圳市速腾聚创科技有限公司 | Method and system for detecting performance of transmitting device |
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