CN101977079A - Method and system for implementing automatic test of indexes of optical module - Google Patents
Method and system for implementing automatic test of indexes of optical module Download PDFInfo
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- CN101977079A CN101977079A CN2010105268742A CN201010526874A CN101977079A CN 101977079 A CN101977079 A CN 101977079A CN 2010105268742 A CN2010105268742 A CN 2010105268742A CN 201010526874 A CN201010526874 A CN 201010526874A CN 101977079 A CN101977079 A CN 101977079A
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Abstract
The invention provides a method and a system for implementing automatic test of indexes of an optical module. The method comprises the following steps of: according to a predetermined test program, adjusting optical power of a service optical signal output by the optical module to be tested; and monitoring the optical power of the service optical signal received by the optical module to be tested and the corresponding index reference values in real time, and testing the corresponding indexes of the optical module to be tested according to the optical power of the service optical signal received by the optical module to be tested and the corresponding index reference values. Compared with the prior art, the method and the system make automation progress in the index test process of the optical module, save the test time, and improve the index test accuracy of the optical module.
Description
Technical field
The present invention relates to the optical module technical field, is a kind of method and system of realizing optical module index automatic test by NE management amplification class veneer.
Background technology
Optical module is an indispensable equipment in any optical fiber telecommunications system, and it belongs to physical layer equipment, is light and electric interface.The performance of optical module has determined the light mouth index of optical fiber telecommunications system, has also just determined the transmission performance of optical fiber telecommunications system.Whether the sensitivity of tradition optical module input, the monitoring of output average light power and optical module and the measurement of overload point are by regulating the adjustable attenuator of external interface, and connect instrument by observation post and have alarm to measure, and its shortcoming has:
Time-consuming effort again in the adjustment process;
In the actual measurement, accommodative excess after the alarm generation, by regulating adjustable attenuator back and forth, finds one to close on value as record often, and process is loaded down with trivial details and error is bigger;
Need manually to write down the result in the measurement, measuring finishes also needs further arrangement;
In the adjustment process, when overload point was tested, the Manual Adjust Attenuation device was excessive, might damage optical receiver, thereby caused optical module to damage.Especially along with the use of 40G, 100G optical module, the cost of optical module is all very high, and breaking-up can bring the massive losses of resource.
Summary of the invention
The technical problem to be solved in the present invention is to carry out the problem that optical power monitoring and sensitivity, overload point are measured in order to overcome of the prior art reaching by frequent manual adjustments adjustable attenuator, proposed a kind of can be by amplifying the method and system that the class veneer is realized optical module index automatic test in NE management.
In order to solve the problems of the technologies described above, the invention provides a kind of system that realizes optical module index automatic test, comprising:
Be used to optical module to be measured that the instrument of professional light signal is provided;
Described optical module to be measured is exported to the debugging power device behind the professional coded optical signal that is used for described instrument is provided; After receiving the professional coded optical signal of described debugging power device output, export to described instrument;
Described debugging power device is used for the regulating command according to test control device, after the luminous power of the described professional light signal that adjusting receives, exports to described optical module to be measured;
Described test control device is used at test process, sends regulating command according to pre-set programs to described debugging power device, and monitors the luminous power that receives professional light signal and the corresponding index reference value of described optical module to be measured in real time.
Further, said system also has following characteristics: described debugging power device comprises:
Described gain module is used for according to first regulating command of test control device the luminous power of the professional light signal that receives being amplified, and exports to electric adjustable attenuator then;
Described electric adjustable attenuator is used for regulating according to second regulating command of described unit of testing and controlling the luminous power of the professional light signal that receives, and the professional light signal after regulating is exported to described optical module to be measured.
Further, said system also has following characteristics: also comprise a coupler and a light power meter, the input of this coupler is connected to described electric adjustable attenuator, one output of this coupler is connected to described optical module to be measured, another output is connected to this light power meter, and described light power meter reports described test control device with the luminous power that records.
Further, said system also has following characteristics:
Described service board is used for the error rate before the error correction of the professional light signal of described optical module to be measured is reported described test control device;
The index reference value of described test control device monitoring is the error rate before the described error correction, and the error rate equals threshold value before described error correction, and then writing down the luminous power that this moment, described light power meter reported is the sensitivity or the overload point of described optical module to be measured.
Further, said system also has following characteristics: also comprise service board, described optical module to be measured is installed on the described service board,
Described service board is used for reporting to described test control device the luminous power of the professional light signal of reception of described optical module to be measured;
The index reference value of described test control device monitoring is the difference of the luminous power that reports of the luminous power that reports of described service board and described light power meter.
Further, said system also has following characteristics: described test control device comprises:
Power regulation module is used at test process, sends regulating command according to pre-set programs to described debugging power device;
Monitoring modular is used for monitoring in real time the luminous power that receives professional light signal and the corresponding index reference value of described optical module to be measured;
Display module as a result is used to show the test result of described monitoring modular.
In order to address the above problem, the present invention also provides a kind of method that realizes optical module index automatic test, and based on testing in the above-mentioned system, this method comprises:
According to the presumptive test program, regulate the luminous power of professional light signal of the output of optical module to be measured;
The luminous power of the described professional light signal that the described optical module to be measured of monitoring in real time receives and corresponding index reference value, the luminous power and the corresponding index reference value of the described professional light signal that receives according to described optical module to be measured are tested the corresponding index of described optical module to be measured.
Further, said method also has following characteristics:
The step of the luminous power of the professional light signal of the described optical module output to be measured of described adjusting comprises:
Regulating gain module makes the luminous power of the professional light signal of described optical module output to be measured be slightly larger than the overload point index request value of described optical module to be measured;
Regulating electric adjustable attenuator makes the luminous power of professional light signal of described optical module to be measured output near behind the sensitivity index required value or overload point index request value of described optical module to be measured, continue to regulate described electric adjustable attenuator, till the error rate equals threshold value before test control device is monitored the error correction of professional light signal of described optical module to be measured;
The error rate before the error correction of the professional light signal that the corresponding index reference value of described real-time monitoring is described optical module to be measured describedly receives the luminous power of described professional light signal and step that corresponding index reference value is tested the corresponding index of described optical module to be measured comprises according to described optical module to be measured:
When the error rate equaled threshold value before described test control device is monitored the error correction of professional light signal of described optical module to be measured, the luminous power that the optical module described to be measured of record monitoring this moment receives described professional light signal was the sensitivity or the overload point of described optical module to be measured.
Further, said method also has following characteristics: described test control device is monitored before the error correction of professional light signal of described optical module to be measured before the error rate, also comprises: the error rate before the error correction of described test control device clear history statistics.
Further, said method also has following characteristics:
The step of the luminous power of the professional light signal of the described optical module output to be measured of described adjusting comprises:
Regulating gain module makes the Output optical power of described optical module to be measured be slightly larger than the overload point desired value of described optical module to be measured;
Regulating electric adjustable attenuator makes the luminous power of professional light signal of described optical module to be measured output between the sensitivity index required value and overload point index request value of described optical module to be measured;
The luminous power of the described professional light signal that the described optical module to be measured of described real-time monitoring receives comprises: the luminous power that luminous power that light power meter reports and service board report; Corresponding index reference value is the difference of the luminous power that reports of the luminous power that reports of described light power meter and service board; The corresponding index of the described optical module to be measured of described test is specially, and test control device is tested the precision that described optical module to be measured receives professional light signal according to described difference.
To sum up, the invention provides a kind of method and system that realize optical module index automatic test, adopt the method for the invention and system, compared with prior art, obtain automation progress in the optical module index test process, saved the testing time, improved the accuracy of optical module index test; And in the test, the optical module receiving terminal is played a protective role, can not decay because of artificial excessive reducing, cause the receiving terminal luminous power excessive, damage receiver.
Description of drawings
Fig. 1 is the schematic diagram of the system of realization optical module index automatic test of the present invention;
Fig. 2 is the flow chart of the method for realization optical module index automatic test of the present invention;
Fig. 3 is the flow chart of method of the realization optical module index automatic test of the embodiment of the invention.
Embodiment
In order to understand the present invention better, the present invention is done to describe further below in conjunction with the drawings and specific embodiments.
Fig. 1 is the schematic diagram of the system of realization optical module index automatic test of the present invention, as shown in the figure, comprise following several sections with:
Instrument is used to optical module to be measured that professional light signal is provided, and particularly, the simulation client is professional to provide the professional light signal with frame format for optical module to be measured;
This instrument needs to decide according to concrete service class veneer supporting business, SDH (Synchronous Digital Hierarchy for example, SDH (Synchronous Digital Hierarchy)), OTN (OpticalTransportNetwork, optical transfer network), GE (gigabit Ethernet business), FC (Fibre Channel, optical-fibre channel FC) business etc.
Described optical module to be measured is exported to the debugging power device behind the professional coded optical signal that is used for described instrument is provided; After receiving the professional coded optical signal of described debugging power device output, export to described instrument;
Described debugging power device is used for the regulating command according to test control device, behind the described professional light signal that adjusting receives, exports to described optical module to be measured;
Described test control device is used at test process, sends regulating command according to pre-set programs to described debugging power device, and monitors the luminous power that receives professional light signal and the corresponding index reference value of described optical module to be measured in real time.
Wherein, described debugging power device comprises: gain module and electric adjustable attenuator,
Described gain module is used for according to first regulating command of test control device the luminous power of the professional light signal that receives being amplified, and exports to described electric adjustable attenuator then;
Described electric adjustable attenuator is used for regulating according to second regulating command of described unit of testing and controlling the luminous power of the professional light signal that receives, and the professional light signal after regulating is exported to described optical module to be measured.
Native system also comprises a coupler and a light power meter, and the input of this coupler is connected to described electric adjustable attenuator, and an output of this coupler is connected to described optical module to be measured, and another output is connected to this light power meter.
Coupler is divided into two-way to module bright dipping to be measured in the service board, and one the tunnel monitors with light power meter, goes out light value for actual, and light power meter reports described test control device with the luminous power that records; One the tunnel enters optical module to be measured, by service board the luminous power of the professional light signal of the reception of optical module to be measured is reported test control device, is the performance monitoring value.
Webmaster is monitored test process by NCP (Network Core Protocol, Network Core Protocol), particularly, adds test control device in webmaster.Test control device comprises following components: power regulation module, monitoring modular, display module as a result, whole process finishes test result is listed automatically.
Power regulation module is used at test process, send regulating command according to pre-set programs to described debugging power device, send corresponding regulating command to gain module and electric adjustable attenuator particularly, realization is to the adjusting of the light inlet of the optical module to be measured of service board.
Monitoring modular is realized the luminous power that receives professional light signal and the corresponding index reference value of the described optical module to be measured of monitoring in real time.The index reference value for example is the error rate before the error correction of professional light signal of optical module to be measured, or the difference of the luminous power that reports of the luminous power that reports of service board and described light power meter.
Display module is responsible for the test result statistics is presented in the window as a result.
Fig. 2 is the flow chart of the method for realization optical module index automatic test of the present invention, and this method is based on that above-mentioned system tests, and as shown in the figure, comprises following step:
S10, according to the presumptive test program, regulate the luminous power of professional light signal of the output of optical module to be measured;
S20, monitor the luminous power and the corresponding index reference value of the described professional light signal that described optical module to be measured receives in real time, the luminous power and the corresponding index reference value of the described professional light signal that receives according to described optical module to be measured are tested the corresponding index of described optical module to be measured.
The detailed process of monitoring the sensitivity of described optical module to be measured or overload point is as follows:
At first, regulate gain module and make the luminous power of the professional light signal of described optical module output to be measured be slightly larger than the overload point index request value of described optical module to be measured, think that the back test provides appropriate light power;
Then, regulating electric adjustable attenuator makes the luminous power of professional light signal of described optical module to be measured output near behind the sensitivity index required value of described optical module to be measured, if test overload point, then regulating electric adjustable attenuator makes the luminous power of professional light signal of described optical module to be measured output near the overload point index request value of described optical module to be measured, then, continue to regulate described electric adjustable attenuator, till the error rate equals threshold value before the error correction of the professional light signal of monitoring described optical module to be measured;
In this process, the error rate before the error correction of the professional light signal that the corresponding index reference value of described real-time monitoring is described optical module to be measured, then when the error rate equaled threshold value before the error correction of the professional light signal of monitoring described optical module to be measured, the luminous power that the optical module described to be measured of record monitoring this moment receives described professional light signal was the sensitivity of described optical module to be measured or is the overload point of described optical module to be measured.
The detailed process of light inlet precision of monitoring described optical module to be measured is as follows:
At first, regulate gain module and make the Output optical power of described optical module to be measured be slightly larger than the overload point desired value of described optical module to be measured, think that the back test provides appropriate light power;
Then, regulating electric adjustable attenuator makes the luminous power of professional light signal of described optical module to be measured output between the sensitivity index required value and overload point index request value of described optical module to be measured;
In this process, the luminous power of the described professional light signal that the described optical module to be measured of described real-time monitoring receives comprises: the luminous power that luminous power that light power meter reports and service board report; Corresponding index reference value is the difference of the luminous power that reports of the luminous power that reports of described light power meter and service board; The corresponding index of the described optical module to be measured of described test is specially, and tests the precision that described optical module to be measured receives professional light signal according to described difference.
Be example with 10G PIN optical module (index request: sensitivity-17.5dBm, overload point 0.5dBm) below, describe the method for realization optical module index automatic test of the present invention in detail, wherein, the scope that electric adjustable attenuator is regulated is 0-30dB.As shown in Figure 3, comprise following step:
Because the luminous power of optical module output to be measured is below 0dB in the service board, do not reach overload point requirement in the index request, effectively amplify earlier by gain module, for the back test provides appropriate light power, undermined for fear of optical module to be measured, the luminous power of regulating gain module output this moment preferably guarantee greater than overload point desired value 0.6dBm to 2dBm.
In the present embodiment, for example, the optical power adjustment that gain module is exported is 1dBm.
The sensitivity of test optical module to be measured below:
For example, making the input optical power of optical module to be measured is-18dBm that specific sensitivity index request value-17.5dBm hangs down 0.5dBm.
Test the sensitivity of optical module to be measured, access service when just beginning, make the input optical power of optical module to be measured be lower than sensitivity, professional obstructed (check instrument, instrument has alarm (as LOF LOF) or error code (as B1)) is by regulating electric adjustable attenuator, improve input optical power, critical point when finding professional leading to, if the error rate is smaller or equal to E-3 before the error correction that performance monitoring reports, then Ci Shi input optical power is sensitivity.
Mainly be to empty the preceding error rate of error correction in the present embodiment, the error rate is an accumulated value before the error correction of service class veneer statistics, and error rate E-3 is as professional break-make decision rule, so need remove historical performance before the error correction.
The error rate before step 104, the statistics error correction judges whether the preceding error rate of error correction equals threshold value (this threshold value for example is E-3, can be to be slightly less than threshold value) in actual monitoring, if, then turn to step 102, if not, then turn to step 105;
Error rate E-3 is the decision rule as professional break-make before the error correction.
Treating the precision of the input optical power of photometry module below monitors:
By control bright dipping in the gain module is 1dBm; PIN module sensitivity index request value is-17.5dBm; overload point index request value is 0.5dBm; for guaranteeing not damage optical module to be measured; can regulate into optical range and (also will protect optical module because should test overload point for+2dBm; so need be higher than overload point a little, the short time does not have damage to module), so electric adjustable attenuator adjustable range only needs 19.5dBm.In this step, after step 1 tests sensitivity, adjust electric adjustable attenuator and select 3 values at random from 0 to 19.5dBm, finish the module input optical power is monitored.
Particularly, by the actual value reported result display module that monitoring modular reports performance number and light power meter to report service board, recorded and stored is also made relevant treatment.Because optical module is monitored by the analog circuit mode and is reported, have error and exist, as long as the value of reporting in the index range of needs, the optical module quality is just no problem.
It is the monitor value of being finished the input optical power for the treatment of the photometry module by service board that webmaster reports performance number, reports monitoring modular, and difference DELTA is finished the calculating that optical power monitoring value and webmaster is reported the performance number difference by monitoring modular.
The display module result that will add up is kept in the performance number statistical form as a result, and (such as the 1dBm) that difference can be surpassed claimed range identify, and with prompting monitoring personnel, sees Table 1.
Table 1
| Optical power monitoring value (dBm) | Webmaster reports performance number (dBm) | Difference DELTA (dBm) | |
| Sensitivity P Spirit | -18.5 | -18 | 0.5 |
| Overload point P Cross | 2.0 | 1.6 | 0.4 |
| Monitor value T1 | -16.0 | -15.5 | 0.5 |
| Monitor value T2 | -8.0 | -8.2 | 0.2 |
| Monitor value T2 | -1.2 | -1.3 | 0.1 |
Performance monitoring precision between sensitivity and overload point has requirement, such as in 1dB.
Test the overload point of optical module to be measured below:
As, the pad value that reduces electric adjustable attenuator is: P
Cross-P3, making the input luminous power is 0.5dBm, P here
CrossOverload point index request value for optical module to be measured.
The overload point index request value of optical module to be measured is 0.5dBm, so as long as test greater than 0.5dBm, 1dBm can meet the demands, simultaneously in order to protect optical module to be measured, need not increase the optical module input optical power always, records the maximum that can bear.
The error rate before step 109, the statistics error correction judges whether the preceding error rate of error correction equals threshold value (this threshold value for example is E-3, can be to be slightly less than threshold value) in actual monitoring, if, then turn to step 110, if not, then turn to step 108;
Should be first before statistics the error rate before the error correction of clear history statistics.
The overload optical power value of supposing to record at last optical module to be measured is 1dBm, and the time is long, can influence the life-span of optical module receiving terminal to be measured, makes the light inlet of optical module to be measured for guaranteeing below 0dBm so regulate electric adjustable attenuator at last.
The appended embodiment of this specification is some exemplary that embody the present invention's design, does not get rid of and uses other embodiment that embody design of the present invention.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to finish by program, described program can be stored in the computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Below only be the preferred embodiments of the present invention; certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. system that realizes optical module index automatic test comprises:
Be used to optical module to be measured that the instrument of professional light signal is provided;
Described optical module to be measured is exported to the debugging power device behind the professional coded optical signal that is used for described instrument is provided; After receiving the professional coded optical signal of described debugging power device output, export to described instrument;
Described debugging power device is used for the regulating command according to test control device, after the luminous power of the described professional light signal that adjusting receives, exports to described optical module to be measured;
Described test control device is used at test process, sends regulating command according to pre-set programs to described debugging power device, and monitors the luminous power that receives professional light signal and the corresponding index reference value of described optical module to be measured in real time.
2. the system as claimed in claim 1, it is characterized in that: described debugging power device comprises:
Described gain module is used for according to first regulating command of test control device the luminous power of the professional light signal that receives being amplified, and exports to electric adjustable attenuator then;
Described electric adjustable attenuator is used for regulating according to second regulating command of described unit of testing and controlling the luminous power of the professional light signal that receives, and the professional light signal after regulating is exported to described optical module to be measured.
3. system as claimed in claim 2 is characterized in that:
Also comprise a coupler and a light power meter, the input of this coupler is connected to described electric adjustable attenuator, one output of this coupler is connected to described optical module to be measured, another output is connected to this light power meter, and described light power meter reports described test control device with the luminous power that records.
4. system as claimed in claim 3 is characterized in that: also comprise service board, described optical module to be measured is installed on the described service board,
Described service board is used for the error rate before the error correction of the professional light signal of described optical module to be measured is reported described test control device;
The index reference value of described test control device monitoring is the error rate before the described error correction, and the error rate equals threshold value before described error correction, and then writing down the luminous power that this moment, described light power meter reported is the sensitivity or the overload point of described optical module to be measured.
5. system as claimed in claim 3 is characterized in that: also comprise service board, described optical module to be measured is installed on the described service board,
Described service board is used for reporting to described test control device the luminous power of the professional light signal of reception of described optical module to be measured;
The index reference value of described test control device monitoring is the difference of the luminous power that reports of the luminous power that reports of described service board and described light power meter.
6. as each described system of claim 1-5, it is characterized in that: described test control device comprises:
Power regulation module is used at test process, sends regulating command according to pre-set programs to described debugging power device;
Monitoring modular is used for monitoring in real time the luminous power that receives professional light signal and the corresponding index reference value of described optical module to be measured;
Display module as a result is used to show the test result of described monitoring modular.
7. method that realizes optical module index automatic test, based on testing in the system as claimed in claim 1, this method comprises:
According to the presumptive test program, regulate the luminous power of professional light signal of the output of optical module to be measured;
The luminous power of the described professional light signal that the described optical module to be measured of monitoring in real time receives and corresponding index reference value, the luminous power and the corresponding index reference value of the described professional light signal that receives according to described optical module to be measured are tested the corresponding index of described optical module to be measured.
8. method as claimed in claim 7 is characterized in that:
The step of the luminous power of the professional light signal of the described optical module output to be measured of described adjusting comprises:
Regulating gain module makes the luminous power of the professional light signal of described optical module output to be measured be slightly larger than the overload point index request value of described optical module to be measured;
Regulating electric adjustable attenuator makes the luminous power of professional light signal of described optical module to be measured output near behind the sensitivity index required value or overload point index request value of described optical module to be measured, continue to regulate described electric adjustable attenuator, till the error rate equals threshold value before test control device is monitored the error correction of professional light signal of described optical module to be measured;
The error rate before the error correction of the professional light signal that the corresponding index reference value of described real-time monitoring is described optical module to be measured describedly receives the luminous power of described professional light signal and step that corresponding index reference value is tested the corresponding index of described optical module to be measured comprises according to described optical module to be measured:
When the error rate equaled threshold value before described test control device is monitored the error correction of professional light signal of described optical module to be measured, the luminous power that the optical module described to be measured of record monitoring this moment receives described professional light signal was the sensitivity or the overload point of described optical module to be measured.
9. method as claimed in claim 8 is characterized in that: described test control device is monitored before the error correction of professional light signal of described optical module to be measured before the error rate, also comprises:
The error rate before the error correction of described test control device clear history statistics.
10. method as claimed in claim 7 is characterized in that:
The step of the luminous power of the professional light signal of the described optical module output to be measured of described adjusting comprises:
Regulating gain module makes the Output optical power of described optical module to be measured be slightly larger than the overload point desired value of described optical module to be measured;
Regulating electric adjustable attenuator makes the luminous power of professional light signal of described optical module to be measured output between the sensitivity index required value and overload point index request value of described optical module to be measured;
The luminous power of the described professional light signal that the described optical module to be measured of described real-time monitoring receives comprises: the luminous power that luminous power that light power meter reports and service board report; Corresponding index reference value is the difference of the luminous power that reports of the luminous power that reports of described light power meter and service board; The corresponding index of the described optical module to be measured of described test is specially, and test control device is tested the precision that described optical module to be measured receives professional light signal according to described difference.
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Effective date of registration: 20191217 Address after: 314400 No.11, Weisan Road, Nongfa District, Chang'an Town, Haining City, Jiaxing City, Zhejiang Province Patentee after: Haining hi tech Zone Science and Innovation Center Co., Ltd Address before: 518057 Nanshan District Guangdong high tech Industrial Park, South Road, science and technology, ZTE building, Ministry of Justice Patentee before: ZTE Communications Co., Ltd. |