CN115021812B - Testing method and system based on radio frequency performance of optical device - Google Patents
Testing method and system based on radio frequency performance of optical device Download PDFInfo
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- CN115021812B CN115021812B CN202210816704.0A CN202210816704A CN115021812B CN 115021812 B CN115021812 B CN 115021812B CN 202210816704 A CN202210816704 A CN 202210816704A CN 115021812 B CN115021812 B CN 115021812B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 187
- 238000012360 testing method Methods 0.000 title claims abstract description 75
- 238000010586 diagram Methods 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000003860 storage Methods 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 6
- 238000011056 performance test Methods 0.000 abstract description 3
- 238000004891 communication Methods 0.000 abstract description 2
- 238000004590 computer program Methods 0.000 description 11
- 108091006146 Channels Proteins 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000005476 soldering Methods 0.000 description 1
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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
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
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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
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Testing Of Individual Semiconductor Devices (AREA)
Abstract
The invention belongs to the technical field of optical communication, and particularly provides a testing method and a system based on radio frequency performance of an optical device, wherein the method comprises the following steps: driving the optical device to be tested to emit light to operate; and modulating the optical device to be tested according to the signal source by using the binary code as the signal source, injecting currents with different magnitudes so as to enable the optical device to be tested to generate corresponding optical signals with modulated signals, and analyzing the radio frequency performance of the optical device to be tested according to the optical signals. The scheme is especially aimed at the high-speed optical device, and not only can the optical eye diagram of the high-speed optical device to be tested be directly tested, but also the radio frequency performance of the high-speed optical device to be tested can be verified; the optical power performance test can be further matched, the comprehensive test of the optical device is perfected, the bad duty ratio is greatly reduced, the optical device is welded and assembled into the optical module, secondary repeated reworking is not needed, and a large number of working hours are saved.
Description
Technical Field
The invention relates to the technical field of optical communication, in particular to a testing method and system based on radio frequency performance of an optical device.
Background
In the production and manufacturing process of a high-speed light speed optical device (for example, more than 100G), only the relevant index of the light power can be tested, but the radio frequency performance of the device can not be tested, but in the use process of an actual optical device, the radio frequency performance is an index which is particularly important for the optical device. Although the optical power related indexes of many optical devices are tested to be qualified at the device end, the radio frequency performance is unqualified, the phenomenon is particularly obvious in the high-speed optical devices, the bad duty ratio is very high, and the devices are repeatedly reworked after the bad radio frequency performance is found after being welded and assembled into the optical module, so that a large amount of working hours are wasted. In addition, in the case of analyzing devices with poor radio frequency performance, the technician generally needs to eliminate the reasons for soldering and PCBA, and thus a complicated cross-over experiment is required. Accordingly, the present invention is directed to a method for high-speed optical device-based radio frequency performance testing for solving such problems.
Disclosure of Invention
The invention aims at the technical problem that the radio frequency performance of the traditional optical device in the prior art cannot be ensured.
The invention provides a testing method based on radio frequency performance of an optical device, which comprises the following steps:
s1, driving an optical device to be tested to emit light to operate;
s2, using binary codes as signal sources, modulating the optical device to be tested according to the signal sources, injecting currents with different magnitudes so that the optical device to be tested generates corresponding optical signals with modulation signals, and analyzing the radio frequency performance of the optical device to be tested according to the optical signals.
Preferably, the S2 specifically includes: the pseudo-random binary code transmitted by the error code instrument is used as a high-speed signal source, clock data is recovered, and a laser driver is used for modulating a laser according to the signal source.
Preferably, in the step S2, analyzing the radio frequency performance of the optical device to be tested according to the optical signal specifically includes: and checking an optical eye diagram of the high-speed signal through an optical oscilloscope, and judging the radio frequency performance of the optical device to be tested according to the optical eye diagram.
Preferably, the judging in S2 the radio frequency performance of the optical device to be tested specifically includes: and comparing and analyzing the eye diagram ER, eye diagram margin and intersection point of the oscilloscope in the image with corresponding fingers respectively by acquiring the image of the oscilloscope, and judging that the radio frequency performance of the optical device to be tested meets the requirement if the eye diagram ER, the eye diagram margin and the intersection point of the oscilloscope are in the corresponding index floating range.
Preferably, the S1 specifically includes: the test board is made through hardware circuit design, and the test board is used for driving the high-speed device to emit light.
Preferably, the S2 specifically includes:
the method comprises the steps that a programmable power supply is used for supplying power to a radio frequency test board, a high-speed signal is provided by an error code instrument, a light path is switched by controlling a switch of the test board, and one path of the light path is connected to a power meter and used for testing the optical power performance of an optical device to be tested; the other path is connected to an oscilloscope for radio frequency performance of the optical device to be tested.
The invention also provides a testing system based on the radio frequency performance of the optical device, which is used for realizing a testing method based on the radio frequency performance of the optical device, and comprises the following steps:
the test board is used for driving the optical device to be tested to emit light and run, and modulating the optical device to be tested by using a binary code as a signal source according to the signal source, and injecting currents with different magnitudes so as to enable the optical device to be tested to generate corresponding optical signals with modulated signals;
and the radio frequency performance testing module is used for analyzing the radio frequency performance of the optical device to be tested according to the optical signal.
The invention also provides an electronic device, which comprises a memory and a processor, wherein the processor is used for realizing the steps of the optical device radio frequency performance-based testing method when executing the computer management program stored in the memory.
The invention also provides a computer readable storage medium, on which a computer management class program is stored, which when executed by a processor, implements the steps of the optical device radio frequency performance based testing method.
The beneficial effects are that: the invention provides a testing method and a system based on radio frequency performance of an optical device, wherein the method comprises the following steps: driving the optical device to be tested to emit light to operate; and modulating the optical device to be tested according to the signal source by using the binary code as the signal source, injecting currents with different magnitudes so as to enable the optical device to be tested to generate corresponding optical signals with modulated signals, and analyzing the radio frequency performance of the optical device to be tested according to the optical signals. The scheme is especially aimed at the high-speed optical device, and not only can the optical eye diagram of the high-speed optical device to be tested be directly tested, but also the radio frequency performance of the high-speed optical device to be tested can be verified; the optical power performance test can be further matched, the comprehensive test of the optical device is perfected, the bad duty ratio is greatly reduced, the optical device is welded and assembled into the optical module, secondary repeated reworking is not needed, and a large number of working hours are saved.
Drawings
FIG. 1 is a block diagram of a hardware circuit design of a high-speed optical device to be tested radio frequency test board provided by the invention;
FIG. 2 is a schematic diagram of a testing principle based on the radio frequency performance of an optical device according to the present invention;
FIG. 3 is a flow chart of a testing method based on the radio frequency performance of an optical device;
fig. 4 is a schematic hardware structure of one possible electronic device according to the present invention;
fig. 5 is a schematic hardware structure of a possible computer readable storage medium according to the present invention.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Referring to fig. 1 to 3, the method for testing radio frequency performance based on an optical device provided by the invention comprises the following steps:
s1, driving an optical device to be tested to emit light to operate; specifically, a test board is made through hardware circuit design, and the test board is used for driving the high-speed device to emit light. And through designing the test board, the optical device to be tested is normally driven to normally emit light.
The test board is used for completing the high-speed device radio frequency test, and in addition, the test board is still required to be matched with the test bench to test the radio frequency performance of the high-speed device. The test bench position building frame diagram is shown in fig. 2. The programmable power supply is used for supplying power to the radio frequency test board, the error code instrument provides high-speed signals, the optical device to be tested is switched to the optical path through the 1*2 optical switch, one path of the optical device to be tested is connected to the power meter for testing the optical power related index of the optical device to be tested, and the other path of the optical device to be tested is connected to the oscilloscope for testing the radio frequency performance of the optical device to be tested.
S2, using binary codes as signal sources, modulating the optical device to be tested according to the signal sources, injecting currents with different magnitudes so that the optical device to be tested generates corresponding optical signals with modulation signals, and analyzing the radio frequency performance of the optical device to be tested according to the optical signals. And (3) carrying out corresponding modulation by taking the binary code as a signal source to obtain different current signals so as to excite the optical device to be tested to generate optical signals with modulation signals, then detecting the optical signals after the optical device to be tested emits light, and comparing and analyzing the parameters of the optical signals with normal values to obtain whether the radio frequency performance of the optical device to be tested is qualified or not.
The scheme is especially aimed at the high-speed optical device, and not only can the optical eye diagram of the high-speed optical device to be tested be directly tested, but also the radio frequency performance of the high-speed optical device to be tested can be verified; the optical power performance test can be further matched, the comprehensive test of the optical device is perfected, the bad duty ratio is greatly reduced, the optical device is welded and assembled into the optical module, secondary repeated reworking is not needed, and a large number of working hours are saved.
The design method of the test board is as follows: the MCU is used as a main control part, DC-DC voltage conversion is used for completing power supply of laser bias voltage, TEC temperature controller is used for realizing temperature control of TEC in the optical device to be tested, the LDD laser driver can output laser driving current, and the circuit can be used for completing the test of optical power related indexes of the high-speed optical device to be tested, such as optical power, wavelength test, PIV curve scanning and the like.
In the preferred scheme, a pseudo-random binary code transmitted by a code error meter is used as a high-speed signal source, clock data is recovered, and a laser driver is used for modulating a laser according to the signal source. The test board reserves a high-speed signal interface, and the radio frequency line is externally connected with a code error instrument which transmits PRBS2 31 -1 pseudo-random binary codes providing a high-speed signal source, by CDR clock data recovery, LDD (laser driver) modulates the laser according to the signal source, injecting different magnitudes of current, the laser correspondingly generating an optical signal with modulated signal. The optical eye pattern of the high-speed signal can be checked through the optical oscilloscope, so that the radio frequency performance of the high-speed optical device to be tested is judged.
In a preferred solution, in the step S2, the analyzing, according to the optical signal, the radio frequency performance of the optical device to be tested specifically includes: and checking an optical eye diagram of the high-speed signal through an optical oscilloscope, and judging the radio frequency performance of the optical device to be tested according to the optical eye diagram. And comparing and analyzing the eye diagram ER, eye diagram margin and intersection point of the oscilloscope in the image with corresponding fingers respectively by acquiring the image of the oscilloscope, and judging that the radio frequency performance of the optical device to be tested meets the requirement if the eye diagram ER, the eye diagram margin and the intersection point of the oscilloscope are in the corresponding index floating range.
Specifically, each device and each test board are connected with a computer through a serial port, and the upper computer software controls each device and each test board through the serial port. After the devices are normally connected according to the block diagram shown in fig. 2, the devices are designed through upper computer automation software, and then the automatic test of the optical power performance and the radio frequency performance of the optical device to be tested can be completed. The test logic of the automation software is shown in fig. 3. Firstly, the automation software initializes the parameters of the test board, namely configures the LDD (laser driver) according to the test requirement and controls the output current of the LDD. And then controlling the test board to power up the optical device to be tested, and powering up the optical device according to the channel sequence, after the 1-channel is powered up, controlling the optical switch to switch the optical path channel, testing the optical power when switching to the 1-channel, and testing the optical eye pattern when switching to the 2-channel. Through an optical eye diagram ER (extinction ratio), a Margin (eye Margin), a cross point and the like, whether the radio frequency performance of the optical device to be tested meets the requirement can be judged. After the channel test of the optical device 1 to be tested is completed, the software controls the power-on board to close the channel of the device 1 for power-on, and opens the channel 2 for power-on, so that the optical power and the optical eye pattern are repeatedly performed as the first operation. Thus, the automatic test of the radio frequency performance of the optical device to be tested can be completed.
The beneficial effects are that:
(1) The hardware circuit design is adopted to make a test board form to drive the high-speed device to emit light, so that the test function of the related index of the optical power of the original high-speed optical device to be tested can be compatible;
(2) The high-speed signal pins are led out when the test board is designed, and the external error code instrument provides radio frequency signals, so that the use is convenient;
(3) The DC end of the soft belt of the optical device to be detected at high speed is connected with the soft belt seat of the test board through a soft belt clamp, and the RF end of the optical device to be detected at high speed is connected with the bonding pad of the test board through a clamp jig in a pressing mode;
(4) The optical eye diagram of the high-speed optical device to be tested can be directly tested by matching with the existing test system, so that the radio frequency performance of the optical device to be tested is verified.
Fig. 4 is a schematic diagram of an embodiment of an electronic device according to an embodiment of the present invention. As shown in fig. 4, an embodiment of the present invention provides an electronic device, including a memory 1310, a processor 1320, and a computer program 1311 stored in the memory 1310 and executable on the processor 1320, wherein the processor 1320 executes the computer program 1311 to implement the following steps: s1, driving an optical device to be tested to emit light to operate;
s2, using binary codes as signal sources, modulating the optical device to be tested according to the signal sources, injecting currents with different magnitudes so that the optical device to be tested generates corresponding optical signals with modulation signals, and analyzing the radio frequency performance of the optical device to be tested according to the optical signals.
Fig. 5 is a schematic diagram of an embodiment of a computer readable storage medium according to the present invention. As shown in fig. 5, the present embodiment provides a computer-readable storage medium 1400 having stored thereon a computer program 1411, which computer program 1411, when executed by a processor, performs the steps of: s1, driving an optical device to be tested to emit light to operate;
s2, using binary codes as signal sources, modulating the optical device to be tested according to the signal sources, injecting currents with different magnitudes so that the optical device to be tested generates corresponding optical signals with modulation signals, and analyzing the radio frequency performance of the optical device to be tested according to the optical signals.
In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (8)
1. The testing method based on the radio frequency performance of the optical device is characterized by comprising the following steps of:
s1, driving an optical device to be tested to emit light to operate;
s2, using binary codes as signal sources, modulating the optical device to be tested according to the signal sources, injecting currents with different magnitudes so that the optical device to be tested generates corresponding optical signals with modulation signals, and analyzing the radio frequency performance of the optical device to be tested according to the optical signals; the modulating the optical device to be tested according to the signal source by using the binary code as the signal source specifically comprises: the pseudo-random binary code transmitted by the error code instrument is used as a high-speed signal source, clock data is recovered, and a laser driver is used for modulating a laser according to the signal source.
2. The method for testing the radio frequency performance of the optical device according to claim 1, wherein the analyzing the radio frequency performance of the optical device to be tested in S2 according to the optical signal specifically includes: and checking an optical eye diagram of the high-speed signal through an optical oscilloscope, and judging the radio frequency performance of the optical device to be tested according to the optical eye diagram.
3. The method for testing the radio frequency performance of the optical device according to claim 2, wherein the determining the radio frequency performance of the optical device to be tested in S2 specifically includes: and comparing and analyzing the eye diagram ER, eye diagram margin and intersection point of the oscilloscope in the image with corresponding fingers respectively by acquiring the image of the oscilloscope, and judging that the radio frequency performance of the optical device to be tested meets the requirement if the eye diagram ER, the eye diagram margin and the intersection point of the oscilloscope are in the corresponding index floating range.
4. The method for testing radio frequency performance of an optical device according to claim 1, wherein S1 specifically comprises: the test board is made through hardware circuit design, and the test board is used for driving the high-speed device to emit light.
5. The method for testing radio frequency performance of an optical device according to claim 4, wherein S2 specifically comprises:
the method comprises the steps that a programmable power supply is used for supplying power to a radio frequency test board, a high-speed signal is provided by an error code instrument, a light path is switched by controlling a switch of the test board, and one path of the light path is connected to a power meter and used for testing the optical power performance of an optical device to be tested; the other path is connected to an oscilloscope for radio frequency performance of the optical device to be tested.
6. A testing system based on optical device radio frequency performance, wherein the system is configured to implement the testing method based on optical device radio frequency performance according to any one of claims 1 to 5, and the testing system comprises:
the test board is used for driving the optical device to be tested to emit light and run, and modulating the optical device to be tested by using a binary code as a signal source according to the signal source, and injecting currents with different magnitudes so as to enable the optical device to be tested to generate corresponding optical signals with modulated signals;
and the radio frequency performance testing module is used for analyzing the radio frequency performance of the optical device to be tested according to the optical signal.
7. An electronic device comprising a memory, a processor for implementing the steps of the method for testing radio frequency performance of an optical device according to any one of claims 1-5 when executing a computer management class program stored in the memory.
8. A computer readable storage medium, having stored thereon a computer management class program which, when executed by a processor, implements the steps of the optical device radio frequency performance based testing method according to any of claims 1-5.
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| CN116203288B (en) * | 2023-02-13 | 2024-01-12 | 成都光创联科技有限公司 | Testing device and testing method for static performance of optical device |
| CN117579153B (en) * | 2024-01-17 | 2024-04-19 | 深圳市迅特通信技术股份有限公司 | Optical interconnection channel TDR low-cost testing device, method and system |
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| CN209767539U (en) * | 2019-04-19 | 2019-12-10 | 烽火通信科技股份有限公司 | Device for generating test signal and test system |
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