CN209001967U - A kind of light path control device and system for ONU error rate test - Google Patents
A kind of light path control device and system for ONU error rate test Download PDFInfo
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- CN209001967U CN209001967U CN201821832855.0U CN201821832855U CN209001967U CN 209001967 U CN209001967 U CN 209001967U CN 201821832855 U CN201821832855 U CN 201821832855U CN 209001967 U CN209001967 U CN 209001967U
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Abstract
The utility model discloses a kind of light path control devices for ONU error rate test, including optical path switching unit, optical power detection unit and control unit, the input terminal of the optical path switching unit and the output end of optical line terminal connect, the input terminal of the optical power detection unit is connect with the output end of the optical path switching unit, the output end of the optical power detection unit and the input terminal of ONU connect, and described control unit is all connected with the optical path switching unit and the optical power detection unit.Through the above technical solutions, capableing of the decaying and automatic collection optical power of auto switching optical path, automatic adjustment optical signal, and comprehensive descision is carried out to the bit error rate of ONU, and the testing time is made to foreshorten to original a quarter.
Description
Technical field
The utility model relates to fiber optic data communication technical field more particularly to a kind of light for ONU error rate test
Road control device and ONU error rate test system.
Background technique
With a large amount of popularization and applications of fiber optic communication FTTH (Fiber To The Home, optical fiber directly arrive family), optical fiber
The production and supply amount of communication equipment also increases considerably.Every communication equipment will pass through multiple project indicators in process of production
Detection, just can guarantee that equipment normally comes into operation, wherein under extreme use state the bit error rate detection be exactly it is wherein important
One.Currently, ONU manufacturer still uses traditional manual test macro when detecting the bit error rate, by repeatedly adjusting light manually
The attenuation of signal, to test the bit error rate of the ONU (Optical Network Unit, optical network unit) in normal use,
And the bit error rate be equal to the limit the bit error rate when limit use state.In addition, optical signal can only be tested every time in a kind of optical path
The error rate data of ONU under needs again when carrying out the error rate test of ONU to the optical signal of different light paths distance
Test system building replaces optical path distance.This test system structure is complicated, and inefficiency, precision is not high, is easy
It is wrong.
Utility model content
In view of the light path control device above shortcomings currently used for ONU error rate test, the utility model is provided
A kind of light path control device for ONU error rate test, can auto switching optical path, automatically adjust optical signal decaying and from
Dynamic acquisition optical power, and comprehensive descision is carried out to the bit error rate of ONU, and the testing time is made to foreshorten to original a quarter.
In order to achieve the above objectives, the embodiments of the present invention adopt the following technical scheme that
A kind of light path control device for ONU error rate test, comprising:
Optical path switching unit, the input terminal and optical line terminal (optical line of the optical path switching unit
Terminal, OLT) output end connection, for switching optical signal between the optical path of different distance；
The output end of optical power detection unit, the input terminal of the optical power detection unit and the optical path switching unit connects
It connects, the output end of the optical power detection unit and the input terminal of ONU (Optical Network Unit, optical network unit) connect
It connects, the detection for optical power after the Attenuation adjustable of optical signal and decaying；
Control unit, described control unit are all connected with the optical path switching unit and the optical power detection unit, are used
It is single that the optical power detection is handled in the control optical path switching unit and the optical power detection unit and reception and analysis
The data of member detection.
Described control unit is connect with the optical path switching unit, controls optical signal between the optical path of different light paths distance
Auto switching, when need replacing optical path apart from when, without building test platform again.Described control unit and the optical power
On the one hand detection unit connection controls the normal measurement of optical power after the orderly decaying and decaying of optical signal, on the other hand, by light
The optical power data of power collecting with processing, are transformed into the detection bit error rate by analysis, and will test the bit error rate and preset mistake
Code rate threshold value is compared, and whether qualified judges automatically ONU error rate test.Further, it is also possible to calculate limit optical power value, i.e.,
When detecting the bit error rate equal to preset bit error rate threshold, detection optical power is limit optical power.
Preferably, the optical path switching unit includes the first optical splitter and photoswitch (optical switch, OSW),
The input terminal of first optical splitter and the output end of optical line terminal connect, and first optical splitter is equipped at least two
Output end, the output end are connect with photoswitch, and the photoswitch is connect with control unit, the output end and photoswitch it
Between optical path distance it is different.Optical information access distance between the quantity of output end and each output end and photoswitch can be with
It is adjusted according to test product and test condition.
Preferably, first optical splitter includes the first output end and second output terminal, first output end and institute
The input terminal for stating second output terminal and photoswitch connects, and the optical path distance and second between first output end and photoswitch are defeated
Optical path distance between outlet and photoswitch is different.
Preferably, the optical path distance between first output end and photoswitch is set as maximum communication distance, and described
Optical path distance between two output ends and photoswitch is set as the linear distance between the second output terminal and photoswitch.By light
Road distance is arranged to maximum communication distance and minimal communications distance, is two kinds of most common situations of the ONU bit error rate, versatile.
For example, maximum communication distance can be set to 20 kms.
Preferably, the optical power detection unit includes variable optical attenuator (Variable Optical
Attenuator, VOA), the second optical splitter and light power meter (optical power meter, OPM), the variable light decay
The input terminal for subtracting device is connect with the output end of the photoswitch, and second optical splitter is equipped with third output end and the 4th output
End, the third output end are connect with ONU, and the 4th output end is connect with light power meter, the variable optical attenuator and institute
It states light power meter to connect with described control unit, the variable optical attenuator is used to carry out Attenuation adjustable to optical signal, will adjust
Optical signal after section is output to the second splitter, and for the variable optical attenuator for decaying to optical signal, the control is single
Member is for controlling the pad value of variable optical attenuator, and the data of reception and the processing analysis light power meter detection.
Preferably, described control unit is server or programmable logic device.For example, server can be set to
Host computer is perhaps equipped with for controlling the optical path switching unit on the mobile terminal host computer or mobile terminal
The program of the data of the optical power detection unit detection is handled with the optical power detection unit and reception and analysis.
Another of the utility model is designed to provide a kind of ONU error rate test system, can auto switching optical path,
The decaying and automatic collection optical power of optical signal are automatically adjusted, and comprehensive descision is carried out to the bit error rate of ONU, and make the testing time
Foreshorten to original a quarter.
A kind of ONU error rate test system, including optical line terminal, ONU and as described above be used for ONU error rate test
Light path control device, the light path control device for ONU error rate test is arranged between optical line terminal and ONU,
And the optical line terminal is connected with the control unit of the light path control device for ONU error rate test with ONU.
The advantages of the utility model is implemented: the utility model provides a kind of light path control for ONU error rate test
Device, including optical path switching unit, optical power detection unit and control unit, the input terminal and light of the optical path switching unit
The output end of road terminal connects, and the input terminal of the optical power detection unit is connect with the output end of the optical path switching unit,
The input terminal of the output end of the optical power detection unit and ONU connect, described control unit and the optical path switching unit and
The optical power detection unit is all connected with.Through the above technical solutions, can auto switching optical path, automatic adjustment optical signal decline
Subtract with automatic collection optical power, and comprehensive descision is carried out to the bit error rate of ONU, and make the testing time foreshorten to original four/
One.
Detailed description of the invention
In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will make below to required in embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is a kind of catenation principle figure of the light path control device for ONU error rate test described in the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1
As shown in Figure 1, a kind of light path control device for ONU error rate test, comprising:
Optical path switching unit 1, the optical path switching unit 1 include the first optical splitter 11 and photoswitch 12, described first
The input terminal of optical splitter 11 is connect with the output end of optical line terminal 4, and first optical splitter 11 includes the first output end
And second output terminal, first output end and the second output terminal are connect with the input terminal of photoswitch 12, described first is defeated
Optical path distance between outlet and photoswitch 12 is set as 20 km of maximum communication distance, the second output terminal and photoswitch 12
Between optical path distance be set as the linear distance between the second output terminal and photoswitch 12, the optical path switching unit 1
For switching optical signal between the optical path of different distance.
Optical power detection unit 2, the optical power detection unit 2 include variable optical attenuator 21, the second optical splitter 22
With light power meter 23, the input terminal of the variable optical attenuator 21 is connect with the output end of the photoswitch 12, second light
Splitter 22 is equipped with third output end and the 4th output end, and the third output end connect with ONU5, the 4th output end and
Light power meter 23 connects, and the variable optical attenuator 21 is used to carry out Attenuation adjustable to optical signal, and the optical signal after adjusting is defeated
Out to the second splitter, the variable optical attenuator 21 is for decaying to optical signal, and the light power meter 23 is for detecting
The optical power data of optical signal after decaying.
Host computer, the host computer and the photoswitch 12, the variable optical attenuator 21 and the light power meter
23 equal and connections control variable optical attenuation machine pair for controlling the auto switching in the optical path of different light paths distance of photoswitch 12
Detection of the automatic decaying and light power meter 23 of optical signal to optical power data, and to the optical power that light power meter 23 detects
Data are analyzed and are handled, and are obtained the detection bit error rate, and be compared with the bit error rate threshold prestored in control unit, are judged
The bit error rate for the ONU5 equipment tested detects whether qualification.
Embodiment 2
A kind of ONU error rate test system, including optical line terminal 4, ONU5 and it is described in embodiment 1 be used for ONU error code
The light path control device of rate test, the light path control device for ONU error rate test are arranged in 4 He of optical line terminal
Between ONU5, and the electricity of the optical line terminal 4 and ONU5 with the light path control device for ONU error rate test
Brain server connection.
The utility model provides a kind of light path control device for ONU error rate test, including optical path switching unit,
Optical power detection unit and control unit, the input terminal of the optical path switching unit and the output end of optical line terminal connect, institute
The input terminal for stating optical power detection unit is connect with the output end of the optical path switching unit, the optical power detection unit it is defeated
The connection of the input terminal of outlet and ONU, described control unit connect with the optical path switching unit and the optical power detection unit
It connects.Through the above technical solutions, it is capable of the decaying and automatic collection optical power of auto switching optical path, automatic adjustment optical signal, and
Comprehensive descision is carried out to the bit error rate of ONU, and the testing time is made to foreshorten to original a quarter.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, any those skilled in the art is in technical scope disclosed by the utility model, the change that can readily occur in
Change or replace, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with described
Subject to scope of protection of the claims.
Claims (7)
1. a kind of light path control device for ONU error rate test characterized by comprising
The input terminal of optical path switching unit, the optical path switching unit is connect with optical line terminal output end, for making optical signal
It is switched between the optical path of different distance；
Optical power detection unit, the input terminal of the optical power detection unit are connect with the output end of the optical path switching unit,
The output end of the optical power detection unit and the input terminal of ONU connect, for light function after the Attenuation adjustable of optical signal and decaying
The detection of rate；
Control unit, described control unit is all connected with the optical path switching unit and the optical power detection unit, for controlling
It makes the optical path switching unit and the optical power detection unit and reception and analysis handles the optical power detection unit inspection
The data of survey.
2. the light path control device according to claim 1 for ONU error rate test, which is characterized in that the optical path
Switch unit includes the first optical splitter and photoswitch, the input terminal of first optical splitter and the output end of optical line terminal
Connection, first optical splitter are equipped at least two output ends, and the output end connect with photoswitch, the photoswitch and
Control unit connection, the optical path distance between the output end and photoswitch are different.
3. the light path control device according to claim 2 for ONU error rate test, which is characterized in that described first
Optical splitter includes the first output end and second output terminal, first output end and the second output terminal and photoswitch it is defeated
Enter end connection, the optical path between optical path distance and second output terminal and photoswitch between first output end and photoswitch away from
From difference.
4. the light path control device according to claim 3 for ONU error rate test, which is characterized in that described first
Optical path distance between output end and photoswitch is set as maximum communication distance, the light between the second output terminal and photoswitch
Road distance is set as the linear distance between the second output terminal and photoswitch.
5. according to the described in any item light path control devices for ONU error rate test of claim 2-4, which is characterized in that
The optical power detection unit includes variable optical attenuator, the second optical splitter and light power meter, the variable optical attenuator
Input terminal is connect with the output end of the photoswitch, and second optical splitter is equipped with third output end and the 4th output end, institute
It states third output end to connect with ONU, the 4th output end is connect with light power meter, the variable optical attenuator and the smooth function
Rate meter is connected with described control unit, and the variable optical attenuator is used to carry out Attenuation adjustable to optical signal, after adjusting
Optical signal is output to the second splitter, and for decaying to optical signal, described control unit is used for the variable optical attenuator
The pad value of variable optical attenuator is controlled, and receives and handle the data for analyzing the light power meter detection.
6. the light path control device according to claim 1 for ONU error rate test, which is characterized in that the control
Unit is server or programmable logic device.
7. a kind of ONU error rate test system, which is characterized in that including any one of optical line terminal, ONU and claim 1 to 6
The light path control device for ONU error rate test, the light path control device for ONU error rate test are arranged
Between optical line terminal and ONU, and the optical line terminal and ONU are and the optical path for ONU error rate test
The control unit of control device connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821832855.0U CN209001967U (en) | 2018-11-06 | 2018-11-06 | A kind of light path control device and system for ONU error rate test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821832855.0U CN209001967U (en) | 2018-11-06 | 2018-11-06 | A kind of light path control device and system for ONU error rate test |
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| CN209001967U true CN209001967U (en) | 2019-06-18 |
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| CN201821832855.0U Active CN209001967U (en) | 2018-11-06 | 2018-11-06 | A kind of light path control device and system for ONU error rate test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114257300A (en) * | 2020-09-23 | 2022-03-29 | 中国移动通信集团天津有限公司 | Passive optical control device, and method and device for testing running state of Optical Network Unit (ONU) equipment |
-
2018
- 2018-11-06 CN CN201821832855.0U patent/CN209001967U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114257300A (en) * | 2020-09-23 | 2022-03-29 | 中国移动通信集团天津有限公司 | Passive optical control device, and method and device for testing running state of Optical Network Unit (ONU) equipment |
| CN114257300B (en) * | 2020-09-23 | 2023-10-27 | 中国移动通信集团天津有限公司 | Method and device for testing running state of Optical Network Unit (ONU) equipment |
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