CN210867702U - Multichannel simultaneous testing system for optical receiver - Google Patents
Multichannel simultaneous testing system for optical receiver Download PDFInfo
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- CN210867702U CN210867702U CN202020202823.3U CN202020202823U CN210867702U CN 210867702 U CN210867702 U CN 210867702U CN 202020202823 U CN202020202823 U CN 202020202823U CN 210867702 U CN210867702 U CN 210867702U
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- 230000003287 optical effect Effects 0.000 title claims abstract description 49
- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 238000004891 communication Methods 0.000 claims abstract description 21
- 238000011084 recovery Methods 0.000 claims abstract description 11
- 239000000835 fiber Substances 0.000 claims abstract 6
- 239000013307 optical fiber Substances 0.000 claims description 21
- 238000013522 software testing Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The utility model relates to an optical receiver multichannel simultaneous test system, including error code analyzer, signal generator, laser light source, the wave divider, the attenuator, the combiner, the second controller, clock data recovery circuit, multichannel PPG passageway has in the error code analyzer, signal generator has multichannel ED passageway, each way of PPG passageway is each way ED passageway of communication connection respectively, signal generator is connected with the laser light source communication, laser light source's output links to each other with the input of wave divider through same optic fibre respectively, the output of wave divider assembles to the combiner jointly behind the attenuator respectively through optic fibre, the output of combiner is connected to the optical receiver's that awaits measuring input through optic fibre, the optical receiver and the second controller communication connection await measuring, the second controller, clock data recovery circuit, the error code analyzer is communication connection in proper order. The utility model discloses a multichannel simultaneous test both can simulate light receiver's in-service behavior, can improve efficiency of software testing again, reaches the purpose of practicing thrift the cost.
Description
Technical Field
The utility model relates to an optical communication field, concretely relates to optical receiver multichannel simultaneous test system.
Background
The existing method for improving the transmission rate of the optical fiber network mainly comprises two aspects, on one hand, the rate of a chip is improved, but due to the limitation of the material of the chip and the improvement rate, the improvement of the rate of the chip is too slow, so that the existing main chip only supports 25G, or the requirement of the market on the transmission rate cannot be met; in order to solve the requirement of the market on the transmission rate, on the other hand, a multichannel wavelength division multiplexing technology is developed, specifically, a plurality of channels are combined together through wavelength division multiplexing to improve the transmission rate of an optical fiber network, 4-channel and 8-channel wavelength division multiplexing is mainstream at present, but new problems are brought by multiple channels, for example, when a multichannel wavelength division multiplexing optical receiver is tested, one-channel testing is needed, the testing time is long, particularly, when high and low temperature testing is carried out, each device needs a tester to sit in front of a testing machine table for a period of time independently, when the number of the devices is small, the method is not suitable, but when the testing method is produced in large scale, the testing method is low in efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the not enough among the prior art, and provide an optical receiver multichannel simultaneous test system for improve the efficiency of testing optical receiver.
The purpose of the utility model is realized through the following technical scheme:
provides a multichannel simultaneous test system of an optical receiver, which comprises an error code analyzer, a signal generator, a laser source, a wave splitter, an attenuator, a wave combiner, a second controller and a clock data recovery circuit, the error code analyzer is provided with a plurality of PPG channels, the signal generator is provided with a plurality of ED channels, each PPG channel is respectively in communication connection with each ED channel, the signal generator is in communication connection with the laser light source, the output end of the laser light source is respectively connected with the input end of the wavelength division device through the same optical fiber, the output end of the wave splitter is respectively connected with the attenuators through optical fibers and then is converged to the wave combiner, the output end of the wave combiner is connected to the input end of the optical receiver to be tested through the optical fibers, the optical receiver to be tested is in communication connection with the second controller, and the second controller, the clock data recovery circuit and the error code analyzer are in communication connection in sequence.
Furthermore, the laser light source is provided with a first controller and a laser device used for emitting laser, and the first controller is in communication connection with the laser device.
Further, the laser has a plurality of and respective wavelength is fixed, and each laser is in side by side and is respectively connected with first controller communication.
Further, the laser is a wavelength tunable laser.
Further, the laser is a TO laser.
And the optical switch is connected in series with the optical fiber between the attenuator and the wave combiner and is used for controlling the on-off of an optical path in the optical fiber.
The output end of the wave combiner is connected with the input end of the wave splitter through an optical fiber, one output end of the wave splitter is connected with the optical power meter through the optical fiber, and the other output end of the wave splitter is connected to the input end of the light receiver to be measured through the optical fiber.
Further, still include the host computer, the second controller communicates through I2C with the host computer.
Furthermore, the light receiver to be measured is plugged in the golden finger socket and is in communication connection with the second controller through the golden finger socket.
Has the advantages that:
the utility model discloses a multichannel simultaneous test both can simulate light receiver's in-service behavior, can improve efficiency of software testing again, reaches the purpose of practicing thrift the cost.
Drawings
The present invention is further explained by using the drawings, but the embodiments in the drawings do not constitute any limitation to the present invention, and for those skilled in the art, other drawings can be obtained according to the following drawings without any inventive work.
Fig. 1 is a schematic hardware architecture diagram of an optical receiver multi-channel simultaneous test system according to an embodiment.
Detailed Description
The invention will be further described with reference to the following examples.
As shown in fig. 1, the laser light source 3 is composed of a first controller 31 and four TO lasers 32, the four TO lasers 32 are arranged side by side and are respectively communicated with the first controller 31, the first controller 31 is communicated with the TO lasers 32, when the laser light source is used, the signal generator 2 modulates four driving signals TO the first controller 31, the first controller 31 respectively controls the four TO lasers 32 TO perform electro-optical conversion according TO the four driving signals, and synchronously emits laser light with signals, and because the four TO lasers 32 are arranged side by side and the four laser light are mixed TO be output, the laser light needs TO be divided into four paths, so that the output ends of the four TO lasers 32 are respectively connected with the input end of the wavelength division device 4 through the same optical fiber, and the wavelength division device 4 divides the laser light into four paths TO be output.
The four outputs of the wave division device 4 are respectively connected to the attenuator 5 through optical fibers, and the attenuator 5 adjusts the power of each channel according to the practical test application condition. The four outputs are respectively sent to the combiner 7 through the optical switch 6 through the optical fiber after passing through the attenuator 5, and when the optical switch 6 is used, the optical power of each channel is controlled to be turned off by the optical switch 6.
After combination, the output end of the combiner 7 is connected with the input end of the optical splitter 8 through an optical fiber, so that the combined laser can be split in the optical splitter 8, for monitoring, the laser needs to be divided into two parts, one part needs to be input into the optical power meter 9 for optical power measurement, therefore, one output end of the optical splitter 8 needs to be connected with the optical power meter 9 through the optical fiber, and the other part needs to be transmitted to the DUT test board 10. The DUT test board 10 is composed of a second controller 101, a golden finger socket and an optical receiver 102 to be tested, the second controller 101 is in communication connection with the optical receiver 102 through the golden finger socket, and the golden finger socket enables the optical receiver 102 to be plugged and unplugged, so that test replacement is facilitated. When the laser processing device is used, the other laser split by the optical splitter 8 is transmitted to the input end of the optical receiver 102 through the optical fiber, the optical receiver 102 performs photoelectric conversion, and an optical signal is converted into an electric signal and transmitted to the second controller 101.
The second controller 101 communicates with the upper computer 11 through I2C to control test power-on and data reading, and communicates with the clock data recovery circuit 12 (CDR for short) to perform clock recovery on the incomplete electrical signal transmitted to the second controller 101 by the clock data recovery circuit 12 for subsequent signal identification.
Referring to fig. 1, a clock data recovery circuit 12 is communicated with an electrical port error code analyzer 1, and after an electrical signal clock is recovered, the clock data recovery circuit 12 sends the electrical signal clock to the error code analyzer 1 for signal comparison.
Specifically, four PPG channels 11 of error code analyzer 1 are connected with four ED channels 21 of signal generator 2 through signal lines, respectively, and when in use, signal generator 2 synchronously sends four driving signals to four PPG channels 11 of error code analyzer 1 through four ED channels 21, and error code analyzer 1 performs sensitivity test by comparing the difference of the two signals.
The embodiment can simulate the actual use condition of the optical receiver by simultaneously testing the multiple channels, can improve the testing efficiency and achieves the purpose of saving the cost.
It should be noted that in this embodiment, the TO laser 32 may also use only one wavelength-tunable TO laser TO output light with a wide wavelength, instead of four side-by-side.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. Optical receiver multichannel simultaneous test system its characterized in that:
including error code analyzer, signal generator, laser light source, wave divider, attenuator, wave combiner, second controller, clock data recovery circuit, multichannel PPG passageway has in the error code analyzer, signal generator has multichannel ED passageway, and each way of PPG passageway is the communication respectively and connects each way ED passageway, signal generator is connected with the laser light source communication, laser light source's output links to each other with the input of wave divider through same optic fibre respectively, the output of wave divider assembles to the wave combiner jointly after optic fibre connects the attenuator respectively, the output of wave combiner is connected to the input of the optical receiver that awaits measuring through optic fibre, the optical receiver that awaits measuring with the second controller communication is connected, and second controller, clock data recovery circuit, error code analyzer are communication connection in proper order.
2. The optical receiver multi-channel simultaneous test system of claim 1, wherein: the laser light source is provided with a first controller and a laser device used for emitting laser, and the first controller is in communication connection with the laser device.
3. The optical receiver multi-channel simultaneous test system of claim 2, wherein: the laser has a plurality ofly and each wavelength is fixed, and each laser is in the same place side by side and respectively with first controller communication connection.
4. The optical receiver multi-channel simultaneous test system of claim 2, wherein: the laser is a laser with adjustable wavelength.
5. The optical receiver multi-channel simultaneous test system according to any one of claims 2-4, characterized in that: the laser is a TO laser.
6. The optical receiver multi-channel simultaneous test system of claim 1, wherein: the optical switch is connected in series to the optical fiber between the attenuator and the wave combiner and used for controlling the on-off of the optical path in the optical fiber.
7. The optical receiver multi-channel simultaneous test system of claim 1, wherein: the output end of the wave combiner is connected with the input end of the wave splitter through an optical fiber, one output end of the wave splitter is connected with the optical power meter through the optical fiber, and the other output end of the wave splitter is connected to the input end of the light receiver to be measured through the optical fiber.
8. The optical receiver multi-channel simultaneous test system of claim 1, wherein: still include the host computer, the second controller carries out the communication with the host computer through I2C.
9. The optical receiver multi-channel simultaneous test system of claim 1, wherein: the light receiver to be measured is plugged in the golden finger socket and is in communication connection with the second controller through the golden finger socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020202823.3U CN210867702U (en) | 2020-02-24 | 2020-02-24 | Multichannel simultaneous testing system for optical receiver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020202823.3U CN210867702U (en) | 2020-02-24 | 2020-02-24 | Multichannel simultaneous testing system for optical receiver |
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| Publication Number | Publication Date |
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| CN210867702U true CN210867702U (en) | 2020-06-26 |
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| CN202020202823.3U Active CN210867702U (en) | 2020-02-24 | 2020-02-24 | Multichannel simultaneous testing system for optical receiver |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 523870 No. 2 Fukang Road, Sha Community, Chang'an Town, Dongguan City, Guangdong Province Patentee after: Guangdong Zhaochi Ruigu Communication Co.,Ltd. Country or region after: China Address before: 523870 No. 2 Fukang Road, Sha Community, Chang'an Town, Dongguan City, Guangdong Province Patentee before: GUANGDONG RUIGU OPTICAL NETWORK COMMUNICATION Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |
Effective date of registration: 20240705 Address after: 518000, Building B, Building 1303, Phase II, Zhaochi Innovation Industrial Park, No. 128 Bulan Road, Xialilang Community, Nanwan Street, Longgang District, Shenzhen, Guangdong Province Patentee after: Shenzhen Zhaochi Ruigu Technology Co.,Ltd. Country or region after: China Address before: 523870 No. 2 Fukang Road, Sha Community, Chang'an Town, Dongguan City, Guangdong Province Patentee before: Guangdong Zhaochi Ruigu Communication Co.,Ltd. Country or region before: China |