CN218276711U - Optical module test system - Google Patents
Optical module test system Download PDFInfo
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- CN218276711U CN218276711U CN202222532064.9U CN202222532064U CN218276711U CN 218276711 U CN218276711 U CN 218276711U CN 202222532064 U CN202222532064 U CN 202222532064U CN 218276711 U CN218276711 U CN 218276711U
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Abstract
The utility model relates to an optical module test system, cooperate the optical module to the output of preconditioning module cooperation optical module, handle the output light of the optical module that awaits measuring; the light splitting module is used for performing light splitting processing on the processed output light, the output plug-in serial ports and the output plug-in serial ports are matched and connected into a light tester, the output light and the output test signals after light splitting are respectively input, the upper computer is matched with the light splitting module to obtain the output signals of any output plug-in serial ports, the adapter configured with the adjusting module is used for obtaining the output signals of the upper computer, and the adapter is connected to the optical module to be tested through the adjusting module. The utility model has simple operation, and only needs to connect the optical module to be tested and configure the optical tester; setting time intervals simultaneously or as required, acquiring parameters including but not limited to average light power, light modulation amplitude and the like, and judging problems by timely adjusting or adjusting detection output, so that the method is suitable for various application environments; the cost of optical module detection is greatly reduced.
Description
Technical Field
The utility model relates to a test of optical equipment; the technical field of testing structural components by optical methods, which is not included in other categories, particularly relates to an optical module testing system.
Background
The optical module (optical module) is composed of optoelectronic devices, a functional circuit, an optical interface and the like, converts an electric signal into an optical signal through a sending end, and converts the optical signal into the electric signal through a receiving end after the optical signal is transmitted through an optical fiber, thereby completing the transmission of information.
The optical module is required to be tested after production, and the quality of the optical module can be ensured only when all parameters meet requirements, wherein the tests comprise but are not limited to light emitting and receiving tests, eye pattern and extinction ratio tests, high and low temperature aging tests, compatibility communication tests and end face cleaning; these first two terms are particularly important and are directly related to the signal output of the light module.
For light emitting and receiving tests, the tests can be realized by testing the output optical power, the output optical power is an important parameter which can determine the transmission distance and quality of the optical module, the receiving sensitivity can determine the light receiving sensitivity of the optical module, and generally speaking, the higher the speed of the optical module, the poorer the receiving sensitivity.
For the eye pattern and extinction ratio test, the results of acquiring and superposing and displaying digital signals for multiple times by using an oscilloscope can intuitively reflect whether the tested signals are lost and whether the signal transmission is good, the extinction ratio is one of the parameters for measuring the quality of an optical module, the larger the extinction ratio is, the stronger the receiving and distinguishing capability of the optical signals is, the higher the receiving sensitivity is, the extinction ratio is in inverse proportion to the optical power, and the larger the extinction ratio is, the smaller the transmitting optical power is.
However, in the prior art, in the production debugging process of various optical modules, the extinction ratio of the transmitting end of the optical module is a parameter which is difficult to measure and is crucial, and a high-speed sampling oscilloscope such as the agilent 86100 series is generally adopted for testing, so that the cost is high; in order to reduce the test cost, in the prior art, a high-speed ADC + high-speed sample-and-hold circuit is adopted as a core to manufacture an extinction ratio tester, but the implementation difficulty of the scheme is very high, and the higher the working rate of the corresponding optical module is, the more the difficulty of the scheme is multiplied, and even the degree that the scheme cannot be realized is reached.
Further, in the prior art, a large number of mechanical operations need to be repeated for testing the optical modules, and the prior art is not suitable for performing ordered test operation on a large batch of optical module products.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem that exists among the prior art, provide an optical module test system.
The utility model discloses the technical scheme who adopts is, an optical module test system, cooperation optical module setting, the system includes:
the preconditioning module is matched with the output end of the optical module and is used for processing the output light of the optical module to be detected;
a light splitting module for performing light splitting processing on the processed output light;
the output plug-in serial ports are used for inputting the light-split output light into different light testers;
the output plug-in serial ports are used for acquiring and outputting output signals of the optical tester;
the upper computer is used for being matched with the light splitting module and acquiring output signals of any output plug serial port;
and the adapter is provided with an adjusting module and is used for acquiring an output signal of the upper computer and connecting the output signal to the optical module to be tested through the adjusting module.
Preferably, the pre-adjusting module comprises an optical power adjuster, and the optical power adjuster is configured in cooperation with the upper computer.
Preferably, the optical power adjuster is an optical attenuator.
Preferably, the preconditioning module further comprises an adjustable filter, and an optical filter is detachably arranged on the adjustable filter along the output light direction of the optical module.
Preferably, the optical splitting module is an optical splitter, and the optical splitter includes an incident channel and a plurality of exit channels.
Preferably, an adjustable shading sheet is matched with any one of the emergent channels, and the adjustable shading sheet is matched with the upper computer.
Preferably, the optical tester comprises an optical power meter, an OMA tester, a spectrum analyzer; any one optical tester corresponds to one group of output plug serial port and output plug serial port.
Preferably, the number of the exit channels of the optical splitter is greater than or equal to the number of the output plug serial ports and the output plug serial ports.
Preferably, any one of the light test instruments and/or any one group of the output plug-in serial ports and the output plug-in serial port are communicated with the upper computer through a relay.
Preferably, all relays matching with the output plug serial ports are provided with time delay units.
The utility model provides an optical module test system, which is matched with the setting of an optical module so that a pre-adjusting module is matched with the output end of the optical module to process the output light of the optical module to be tested; the light splitting module is used for splitting the processed output light, the output plug-in serial ports and the output plug-in serial ports are matched and connected into the light tester, the split output light and the split output test signals are respectively input, the upper computer is matched with the light splitting module to obtain the output signals of any output plug-in serial ports, the adapter with the adjusting module is used for obtaining the output signals of the upper computer, and the adapter is connected to the optical module to be tested through the adjusting module.
The beneficial effects of the utility model reside in that:
(1) The operation is simple, and only the optical module to be tested needs to be connected and the optical tester needs to be configured;
(2) Setting time intervals simultaneously or as required, acquiring parameters including but not limited to average light power, light modulation amplitude and the like, and judging problems by adjusting detection output in real time or by adjusting detection output, so that the method is suitable for various application environments;
(3) The cost of optical module detection is greatly reduced.
Drawings
Fig. 1 is a block diagram of the present invention, in which a solid arrow indicates a signal output direction, and a dotted arrow indicates a signal output direction in a pluggable state;
fig. 2 is a schematic structural diagram of the tunable optical filter of the present invention;
fig. 3 is a schematic diagram of the tunable optical filter and the optical filter of the present invention;
fig. 4 is a schematic structural diagram of the exit channel of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples, but the scope of the present invention is not limited thereto.
The utility model relates to an optical module test system, cooperation optical module setting, the system includes:
the pre-adjusting module is matched with the output end of the optical module and is used for processing the output light of the optical module to be detected;
a light splitting module for performing light splitting processing on the processed output light;
the output plug-in serial ports are used for inputting the light-split output light into different light testers;
the output socket serial ports are used for acquiring and outputting output signals of the optical tester;
the upper computer is used for being matched with the light splitting module and acquiring output signals of any number of output plug serial ports;
and the adapter is provided with an adjusting module and is used for acquiring an output signal of the upper computer and connecting the output signal to the optical module to be tested through the adjusting module.
The utility model discloses in, through setting up this system, accomplished the collection of a plurality of test data of single optical module single, and then shortened test time and debug time by a wide margin, whole test is controllable, and the cost is lower.
The pre-adjusting module comprises an optical power adjuster, and the optical power adjuster is matched with the upper computer.
The optical power regulator is an optical attenuator.
The pre-adjusting module further comprises an adjustable optical filter 1, and an optical filter 2 is detachably arranged on the adjustable optical filter 1 along the output light direction of the optical module.
The utility model discloses in, precondition the preliminary treatment operation that is generally used for accomplishing output optical signal.
In the utility model, the optical signal of the optical module to be measured is input into the optical attenuator, and the output optical power reaches the appropriate optical power by adjusting the attenuation value of the optical attenuator; the adjustment can be completed by controlling the upper computer by a tester.
In the utility model, the optical signal after attenuation can be added with light filtering for imitating different application environments and simulating the actual application of the optical signal, so that the test environment is more in line with the actual application scene; in application, the optical filter 2 of the tunable optical filter 1 can be detached and attached as required, and the operation can be completed quickly and conveniently.
The light splitting module is an optical splitter, and the optical splitter comprises an incident channel and a plurality of emergent channels 3.
An adjustable shading sheet 4 is matched with any one of the emergent channels 3, and the adjustable shading sheet 4 is matched with the upper computer.
The utility model discloses in, carry out the branching to the light signal of output, the branching unit is 1: n branching unit, N more than or equal to 1, correspond one or more exit channels 3 and all set up adjustable gobo 4, through the control of host computer, adjust one or more gobo work, and then realize the branching of light path.
In the utility model, the light shielding sheet 4 can be directly provided with a blocking piece in the light path, for example, the blocking piece is provided through the electromagnetic switch 5, the light path of some corresponding shunts is connected into the optical tester and powered on, at the moment, the corresponding electromagnetic switch 5 (electromagnet) in the light path is powered on, the blocking piece is pulled open, the light path is switched on, and the power on of the electromagnetic switch 5 (electromagnet) is controlled by the upper computer; certainly, a person skilled in the art can also set dimming glasses in the light path, when some of the light paths are connected to the light tester and powered on, the dimming glass of the corresponding light path is fully transparent, at this time, the light path is conducted, while other light paths are kept in a non-conducting state, and the on-off adjustment of the dimming glass is controlled by the upper computer.
The optical tester comprises an optical power meter, an OMA tester and an optical spectrum analyzer; any one optical tester corresponds to one group of output plug-in serial port and output plug-in serial port.
The utility model discloses in, directly set up the output in groups and connect the serial ports and the output connects the serial ports, can connect the output of every group and connect the serial ports and set up the light test instrument based on the demand between the serial ports with the output, and then realize the acquisition of the many test data of single.
The number of the emergent channels 3 of the optical splitter is more than or equal to the number of the output plug serial ports and the output plug serial ports.
Any one optical tester and/or any one group of output socket serial port and the output socket serial port are communicated with the upper computer through a relay.
The utility model discloses in to 3 quantity assurance tests of optical divider's exit channel can accessible execution, and optical divider can set up simultaneously and detect the position, and the signal sampling detection is carried out to optical divider's shut in real time, ensures linking up of its work, in time handles the trouble.
The utility model discloses in, through the relay that host computer control corresponds, and then realize the work control of different, the light tester that has inserted, this content that is easy understanding of technical staff in the field, technical staff in the field can set up by oneself according to the demand.
The utility model discloses in, through this kind of structure, can further realize the remote test of optical module, and then make batchization detect to become possible.
The utility model discloses in, the host computer generally can be the PC, and based on this, all serial ports can be connected with the PC through bus access back.
And the relays matched with all the output plug serial ports are provided with time delay units.
In the utility model, the time-sharing data acquisition of single and multiple light test instruments can be realized by arranging the time delay unit for the relay, so that the system can realize single parameter adjustment and also can realize multi-parameter adjustment; the delay unit can be directly matched with a relay, generally adopts an electromagnetic time relay or an electronic time relay, and realizes the power-on delay.
The utility model discloses in, the adapter generally changes I2C adapter for USB, and the adjusting module of its configuration is used for adjusting the bias current and the modulation current of the optical module that awaits measuring.
The utility model discloses in, an embodiment is given:
by 1: n optical splitters can split the optical signal into multiple (N) paths, where N is 2 for example,
one path of the light power meter is input through an output plug-in serial port, the average light power PAVG is measured, and the PAVG value is output through the output plug-in serial port;
the other path is input into an OMA tester through an output plug-in serial port, the optical modulation amplitude OMA is measured, and an OMA value is output through the output plug-in serial port;
the measured value is sent to an upper computer, and the upper computer can obtain corresponding light detection data such as an extinction ratio ER through a preset calculation formula;
the host computer controls the optical module to be detected through a USB-to-I2C adapter bus, constantly adjusts the bias current and the modulation current of the laser driving chip, and adjusts the detection data of the optical module to be detected, such as the extinction ratio, to a target value by combining control.
Claims (10)
1. The utility model provides an optical module test system, cooperation optical module setting which characterized in that: the system comprises:
the pre-adjusting module is matched with the output end of the optical module and is used for processing the output light of the optical module to be detected;
a light splitting module for performing light splitting processing on the processed output light;
the output patch serial ports are used for inputting the output light after light splitting into different light testers;
the output plug-in serial ports are used for acquiring and outputting output signals of the optical tester;
the upper computer is used for being matched with the light splitting module and acquiring output signals of any output plug serial port;
and the adapter is provided with an adjusting module and is used for acquiring an output signal of the upper computer and connecting the output signal to the optical module to be detected through the adjusting module.
2. A light module testing system according to claim 1, wherein: the pre-adjusting module comprises an optical power adjuster, and the optical power adjuster is matched with the upper computer.
3. A light module testing system according to claim 2, wherein: the optical power regulator is an optical attenuator.
4. A light module testing system according to claim 2, wherein: the pre-adjusting module further comprises an adjustable optical filter, and an optical filter is detachably arranged on the adjustable optical filter along the output light direction of the optical module.
5. A light module testing system according to claim 1, wherein: the light splitting module is an optical splitter, and the optical splitter comprises an incident channel and a plurality of emergent channels.
6. A light module testing system according to claim 5, wherein: an adjustable shading sheet is matched with any one of the emergent channels, and the adjustable shading sheet is matched with the upper computer.
7. A light module testing system according to claim 1, wherein: the optical tester comprises an optical power meter, an OMA tester and an optical spectrum analyzer; any one optical tester corresponds to one group of output plug serial port and output plug serial port.
8. The optical module testing system of claim 5, wherein: the number of the emergent channels of the optical splitter is more than or equal to the number of the output plug serial ports and the output plug serial ports.
9. A light module testing system according to claim 1, wherein: any one optical tester and/or any one group of output socket serial port and the output socket serial port are communicated with the upper computer through a relay.
10. A light module testing system according to claim 9, wherein: and the relays matched with all the output plug serial ports are provided with time delay units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222532064.9U CN218276711U (en) | 2022-09-25 | 2022-09-25 | Optical module test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222532064.9U CN218276711U (en) | 2022-09-25 | 2022-09-25 | Optical module test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218276711U true CN218276711U (en) | 2023-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222532064.9U Active CN218276711U (en) | 2022-09-25 | 2022-09-25 | Optical module test system |
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| Country | Link |
|---|---|
| CN (1) | CN218276711U (en) |
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- 2022-09-25 CN CN202222532064.9U patent/CN218276711U/en active Active
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