CN112636824A - OAM function testing device and method of OAM optical module - Google Patents
OAM function testing device and method of OAM optical module Download PDFInfo
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- CN112636824A CN112636824A CN202011494281.2A CN202011494281A CN112636824A CN 112636824 A CN112636824 A CN 112636824A CN 202011494281 A CN202011494281 A CN 202011494281A CN 112636824 A CN112636824 A CN 112636824A
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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
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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
- H04B10/0797—Monitoring line amplifier or line repeater equipment
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Abstract
The invention provides an OAM function testing device and method of an OAM optical module. The Tx end of the OAM optical module to be tested is connected with the input end of the first optical switch, the first output end of the first optical switch is connected with the oscilloscope through the optical probe, the second output end of the first optical switch is connected with the Rx end of the GT optical module through the first variable optical attenuator, and the third output end of the first optical switch is connected with the first input end of the second optical switch. The Tx end of the GT optical module is connected to the second input end of the second optical module, and the output end of the second optical switch is connected to the Rx end of the OAM optical module to be measured through the second variable optical attenuator. The invention can automatically test the OAM related functions of the OAM optical module to be tested, thereby improving the reliability and the test efficiency of the OAM function test.
Description
Technical Field
The invention relates to the technical field of 5G forward transmission, in particular to an OAM function testing device and method of an OAM optical module.
Background
At present, all module manufacturers of the test process of the mass production of the conventional 5G forward-transmission 25G optical module are basically the same and different, and the mobile OAM concept makes the 25G OAM optical module gradually occupy the market, and the OAM partial test capability in the process of the mass production capability directly determines the delivery capability at the later stage.
The existing OAM function test is based on manual operation, the manual test not only consumes long time, but also needs to continuously switch the station position in the test process, and the test efficiency and the reliability are low.
Disclosure of Invention
In order to solve the above problems, embodiments of the present invention provide a method and a system for testing an OAM function of an OAM optical module, which overcome or at least partially solve the above problems.
In a first aspect, an embodiment of the present invention provides an OAM function testing apparatus for an OAM optical module, including an OAM optical module to be tested, a GT optical module, an optical probe, an oscilloscope, a first optical switch, a second optical switch, a first variable optical attenuator, and a second variable optical attenuator;
the Tx end of the OAM optical module to be tested is connected with the input end of a first optical switch, the first output end of the first optical switch is connected with an oscilloscope through an optical probe, the second output end of the first optical switch is connected with the Rx end of the GT optical module through a first adjustable optical attenuator, and the third output end of the first optical switch is connected with the first input end of a second optical switch; the Tx end of the GT optical module is connected to the second input end of the second optical module, and the output end of the second optical switch is connected to the Rx end of the OAM optical module to be measured through the second variable optical attenuator; the OAM optical module to be tested and the GT optical module are respectively connected with a PC.
Preferably, the OAM optical module to be tested and the GT optical module are both connected to the PC through an I2C bus.
Preferably, the first optical switch and the first variable optical attenuator are connected by a first transmission optical fiber, and the second optical switch and the second variable optical attenuator are connected by a second transmission optical fiber.
In a second aspect, an embodiment of the present invention provides a method for testing an OAM function of an OAM function testing apparatus based on an OAM optical module provided in the first aspect, where the method includes:
step1, after the device is powered on, the PC executes a test program, switches on a second input end of a second optical switch, controls the attenuation of a second variable optical attenuator, enables the Rx end of the OAM optical module to be tested to reach a preset sensitivity point and an overload point, and then controls the GT optical module to respectively send lights with different top-adjusting depths so as to test the OAM sensitivity and the anti-interference capability of the receiving end of the optical module to be tested;
and Step2, controlling to switch on the first output end of the first optical switch by the test program, and testing the top-adjusting depth of the OAM optical module to be tested through the optical probe and the oscilloscope.
Preferably, the method further comprises:
and Step3, the test program controls to be connected with the second output end of the first optical switch, adjusts the attenuation of the two variable optical attenuators to enable the light intensities of the Rx ends of the GT optical module and the OAM optical module to be tested to reach a sensitivity point and an overload point, controls the OAM optical module to be tested to emit different OAM instructions at different light intensity points, and reads the return values of the GT optical module and the OAM optical module to be tested, so that the sensitivity of the receiving end of the OAM optical module to be tested is tested.
Preferably, the method further comprises:
and Step4, the test program controls to connect the third output end of the first optical switch and the second input end of the second optical switch, adjusts the attenuation of the two variable optical attenuators to enable the light intensities of the Rx ends of the GT optical module and the to-be-tested OAM optical module to reach a sensitivity point and an overload point, and controls different OAM instructions of the to-be-tested OAM optical module to test the sensitivity of the to-be-tested OAM optical module under the self-loop.
Compared with the prior art that manual testing not only consumes long time, but also needs to switch stations continuously in the testing process, and the testing efficiency is low and not high, the OAM function testing device and the OAM function testing method of the OAM optical module provided by the embodiment of the invention have the advantages that the reliability and the testing efficiency of the OAM function testing are improved, and the OAM function testing capability of the OAM optical modules in batches is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an OAM function testing apparatus of an OAM optical module according to an embodiment of the present invention;
fig. 2 is a flowchart of an OAM function testing method of an OAM optical module according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The existing OAM function test is based on manual operation, the manual test not only consumes long time, but also needs to continuously switch the station position in the test process, and the test efficiency and the reliability are low.
To solve this problem, an embodiment of the present invention provides an OAM function testing apparatus for an OAM optical module, as shown in fig. 1, the apparatus includes an OAM optical module to be tested, a GT optical module, an optical probe, an oscilloscope, a first optical switch, a second optical switch, a first variable optical attenuator, and a second variable optical attenuator;
a Tx (transmitting) end of the OAM optical module to be tested is connected to an input end of a first optical switch, a first output end of the first optical switch is connected to an oscilloscope through an optical probe, a second output end of the first optical switch is connected to an Rx (receiving) end of the GT optical module through a first variable optical attenuator, and a third output end of the first optical switch is connected to a first input end of a second optical switch; the Tx end of the GT optical module is connected to the second input end of the second optical module, and the output end of the second optical switch is connected to the Rx end of the OAM optical module to be measured through the second variable optical attenuator; the OAM (Operation Administration and Maintenance) optical module and the GT (golden transmitter) optical module to be tested are respectively connected with a PC (Personal Computer). The first optical switch is connected with the first variable optical attenuator through a first transmission optical fiber, and the second optical switch is connected with the second variable optical attenuator through a second transmission optical fiber.
The OAM optical module is an optical module with a top-adjusting function and supporting operation, maintenance and management services, and the GT optical module is a standard optical module for testing the top-adjusting function. The "optical switch 1" and the "optical switch 2" in fig. 1 are the first optical switch and the second optical switch in this document, and so on.
In this embodiment, the OAM optical module may be a 25G SFP28 tuned top optical module. The invention relates to an automatic OAM function test of a 25G SFP28 tuning optical module in 5G forward transmission application.
Specifically, referring to fig. 1, the first optical switch has three output terminals, OUT1, OUT2, and OUT3 in fig. 1, respectively. The OAM optical module to be tested and the GT optical module are both connected with a PC through an I2C bus. Two transmission fibers and two variable optical attenuators can be used to adjust the amount of light intensity specifically to the Rx end. The PC executes a preset test program to control the device to complete the OAM function related test. OAM instruction sending and monitoring information reading in the testing process are completed through communication between the PC and the I2C of the module testing board.
The following specifically describes the working principle of the OAM function testing apparatus for an OAM optical module provided in the embodiment of the present invention:
firstly, after the device is powered on, the PC executes a test program, the second input end of the second optical switch is connected, the attenuation of the second variable optical attenuator is controlled, the Rx end of the OAM optical module to be tested is enabled to reach a preset sensitivity point and an overload point, and then the GT optical module is controlled to respectively send lights with different vertex-adjusting depths so as to test the OAM sensitivity and the anti-interference capability of the receiving end of the optical module to be tested.
And then, the test program controls to be connected with the first output end of the first optical switch, and the optical probe and the oscilloscope are used for testing the top-adjusting depth of the OAM optical module to be tested. Specifically, the light emitted by the OAM optical module to be tested with the top-adjusting signal is transmitted to an optical probe of an oscilloscope, the optical probe is a low-bandwidth optical probe and is used for testing a low-speed optical signal, namely the top-adjusting signal with the modulation frequency of 1kb/s, and the specific top-adjusting depth is calculated through the sampling high and low levels of the oscilloscope, so that the top-adjusting depth test of the OAM optical module to be tested is completed.
And then, the test program controls to be connected with a second output end of the first optical switch, adjusts the attenuation of the two variable optical attenuators so that the light intensities of the GT optical module and the Rx end of the OAM optical module to be tested reach a sensitivity point and an overload point, controls the OAM optical module to be tested to emit different OAM instructions at different light intensity points, and reads the return values of the GT optical module and the OAM optical module to be tested, so that the sensitivity of the receiving end (Rx end) of the OAM optical module to be tested is tested.
And finally, the test program controls to be connected with the third output end of the first optical switch and the second input end of the second optical switch, adjusts the attenuation quantities of the two variable optical attenuators to enable the light intensities of the Rx ends of the GT optical module and the OAM optical module to be tested to reach a sensitivity point and an overload point, and controls different OAM instructions of the OAM optical module to be tested so as to test the sensitivity of the OAM optical module to be tested under the self loop.
Compared with the prior art that manual testing not only consumes long time, but also needs to switch stations continuously in the testing process, and the testing efficiency is low and not high, the OAM function testing device of the OAM optical module provided by the embodiment of the invention can automatically test the OAM related functions of the OAM optical module to be tested, improves the reliability and the testing efficiency of the OAM function testing, and improves the OAM function testing capability of the OAM optical modules in batches.
In an embodiment, fig. 2 is a flowchart of an OAM function testing method for an OAM optical module according to an embodiment of the present invention, where the method is based on fig. 2 shown in fig. 1, and the method includes, but is not limited to, the following steps:
step1, after the device is powered on, the PC executes a test program, switches on a second input end of a second optical switch, controls the attenuation of a second variable optical attenuator, enables the Rx end of the OAM optical module to be tested to reach a preset sensitivity point and an overload point, and then controls the GT optical module to respectively send lights with different top-adjusting depths so as to test the OAM sensitivity and the anti-interference capability of the receiving end of the optical module to be tested;
and Step2, controlling to switch on the first output end of the first optical switch by the test program, and testing the top-adjusting depth of the OAM optical module to be tested through the optical probe and the oscilloscope.
Specifically, the light emitted by the OAM optical module to be tested with the top-adjusting signal is transmitted to an optical probe of an oscilloscope, the optical probe is a low-bandwidth optical probe and is used for testing a low-speed optical signal, namely the top-adjusting signal with the modulation frequency of 1kb/s, and the specific top-adjusting depth is calculated through the sampling high and low levels of the oscilloscope, so that the top-adjusting depth test of the OAM optical module to be tested is completed.
In one embodiment, the method further comprises:
and Step3, the test program controls to be connected with the second output end of the first optical switch, adjusts the attenuation of the two variable optical attenuators to enable the light intensities of the Rx ends of the GT optical module and the OAM optical module to be tested to reach a sensitivity point and an overload point, controls the OAM optical module to be tested to emit different OAM instructions at different light intensity points, and reads the return values of the GT optical module and the OAM optical module to be tested, so that the sensitivity of the receiving end of the OAM optical module to be tested is tested.
In one embodiment, the method further comprises:
and Step4, the test program controls to connect the third output end of the first optical switch and the second input end of the second optical switch, adjusts the attenuation of the two variable optical attenuators to enable the light intensities of the Rx ends of the GT optical module and the to-be-tested OAM optical module to reach a sensitivity point and an overload point, and controls different OAM instructions of the to-be-tested OAM optical module to test the sensitivity of the to-be-tested OAM optical module under the self-loop.
In summary, embodiments of the present invention provide an OAM function testing apparatus and method for an OAM optical module, which can perform an automated test on an OAM related function of the OAM optical module to be tested, and compared with the prior art that a manual test not only takes a long time, but also needs to continuously switch stations during a test process, and the test efficiency is low and the reliability is not high, the present invention improves reliability and test efficiency of an OAM function test, and improves an OAM function testing capability of a batch of OAM optical modules.
The embodiments of the present invention can be arbitrarily combined to achieve different technical effects.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. An OAM function testing device of an OAM optical module is characterized by comprising an OAM optical module to be tested, a GT optical module, an optical probe, an oscilloscope, a first optical switch, a second optical switch, a first variable optical attenuator and a second variable optical attenuator;
the Tx end of the OAM optical module to be tested is connected with the input end of a first optical switch, the first output end of the first optical switch is connected with an oscilloscope through an optical probe, the second output end of the first optical switch is connected with the Rx end of the GT optical module through a first adjustable optical attenuator, and the third output end of the first optical switch is connected with the first input end of a second optical switch; the Tx end of the GT optical module is connected to the second input end of the second optical module, and the output end of the second optical switch is connected to the Rx end of the OAM optical module to be measured through the second variable optical attenuator; the OAM optical module to be tested and the GT optical module are respectively connected with a PC.
2. The OAM function test apparatus of an OAM optical module as recited in claim 1, wherein said to-be-tested OAM optical module and said GT optical module are both connected to a PC through an I2C bus.
3. The OAM function test apparatus of an OAM optical module as recited in claim 1, wherein said first optical switch is connected to a first variable optical attenuator by a first transmission fiber, and said second optical switch is connected to a second variable optical attenuator by a second transmission fiber.
4. An OAM function test method of an OAM function test apparatus based on the OAM optical module of any one of claims 1 to 3, characterized by comprising:
step1, after the device is powered on, the PC executes a test program, switches on a second input end of a second optical switch, controls the attenuation of a second variable optical attenuator, enables the Rx end of the OAM optical module to be tested to reach a preset sensitivity point and an overload point, and then controls the GT optical module to respectively send lights with different top-adjusting depths so as to test the OAM sensitivity and the anti-interference capability of the receiving end of the optical module to be tested;
and Step2, controlling to switch on the first output end of the first optical switch by the test program, and testing the top-adjusting depth of the OAM optical module to be tested through the optical probe and the oscilloscope.
5. The OAM function test apparatus of the OAM optical module of claim 4, further comprising:
and Step3, the test program controls to be connected with the second output end of the first optical switch, adjusts the attenuation of the two variable optical attenuators to enable the light intensities of the Rx ends of the GT optical module and the OAM optical module to be tested to reach a sensitivity point and an overload point, controls the OAM optical module to be tested to emit different OAM instructions at different light intensity points, and reads the return values of the GT optical module and the OAM optical module to be tested, so that the sensitivity of the receiving end of the OAM optical module to be tested is tested.
6. The OAM function test apparatus of an OAM optical module as recited in claim 5, further comprising:
and Step4, the test program controls to connect the third output end of the first optical switch and the second input end of the second optical switch, adjusts the attenuation of the two variable optical attenuators to enable the light intensities of the Rx ends of the GT optical module and the to-be-tested OAM optical module to reach a sensitivity point and an overload point, and controls different OAM instructions of the to-be-tested OAM optical module to test the sensitivity of the to-be-tested OAM optical module under the self-loop.
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