CN104993864A - Optical network terminal (ONT) state tester based on Rayleigh scattering technology - Google Patents
Optical network terminal (ONT) state tester based on Rayleigh scattering technology Download PDFInfo
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- CN104993864A CN104993864A CN201510392336.1A CN201510392336A CN104993864A CN 104993864 A CN104993864 A CN 104993864A CN 201510392336 A CN201510392336 A CN 201510392336A CN 104993864 A CN104993864 A CN 104993864A
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- directional coupler
- pulse generator
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- ont
- rayleigh scattering
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Abstract
The invention discloses an optical network terminal (ONT) state tester based on a Rayleigh scattering technology. The tester comprises a signal control module, a signal processing module, a pulse generator, a light source, an analog-digital converter, an amplifier, a photoelectric detector, a directional coupler, a front end contact, and a to-be-tested optical fiber. Output ends of the signal control module and the signal processing module are respectively connected with the pulse generator and the analog-digital converter. The output end of the pulse generator is connected with the directional coupler through the light source. The directional coupler is connected with the to-be-tested optical fiber through the front end contact. The directional coupler is also connected with the photoelectric detector. The amplifier is connected between the photoelectric detector and the analog-digital converter. The ONT state tester has the characteristics of being simple and reasonable in design, being convenient to operate, improving testing speed and accuracy, lowering the cost, reducing loss and so on.
Description
Technical field
The present invention relates to technical field of optical fiber communication, particularly relate to a kind of ONT state verification instrument based on Rayleigh scattering technology.
Background technology
The decay of fiber-optic signal causes primarily of inappropriate use and elemental destruction, as stretched by transition and bending the disconnected stock phenomenon that the fibre core caused splits or natural force causes, therefore when safeguarding, needs to test optical fiber.
Along with fiber-to-the-home universal, safeguard that the input cost of huge network is more and more higher, and the most difficult in network operation be the state of best a kilometer, attendant is difficult to register one's residence and carries out testing and patrolling and examining.At present, there is following a few point defect, one for prior art, the speed of test is comparatively slow, and the stand-by period is longer; Its two, there will be in test process and survey phenomenon by mistake; Its three, tester loss in test process is comparatively large, and user normally can not use broadband in testing; Its four, cost is high, expensive.In order to overcome the problems referred to above, need to provide a kind of new technical scheme to solve.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of ONT state verification instrument based on Rayleigh scattering technology, and this tester improves test speed and precision, reduces cost, decreases loss.
Technical problem to be solved by this invention realizes by the following technical solutions:
Based on the ONT state verification instrument of Rayleigh scattering technology, it is characterized in that: it comprises signal controlling and processing module, pulse generator, light source, analog-to-digital conversion, amplifier, photodetector, directional coupler, front tab, tested optical fiber, the output of described signal controlling and processing module is connected to pulse generator and analog to digital converter; The output of described pulse generator is connected with directional coupler by light source; Described directional coupler is connected with tested optical fiber by front tab; Described directional coupler is also connected with photodetector; Describedly between photodetector and analog to digital converter, be connected with amplifier.
As preferred embodiment, described signal controlling and processing module comprise controller and arithmetic unit.
Further, described signal controlling and processing module are the cores of the ONT state verification instrument based on Rayleigh scattering technology.
Further, described pulse generator and light source are referred to as pulse laser.
Beneficial effect of the present invention: easy to use, simple to operate, improve speed and the precision of test, shorten the reaction time, decrease loss, reduce maintenance cost.
Accompanying drawing explanation
Fig. 1 is Control system architecture schematic diagram of the present invention;
In figure: 1-signal controlling and processing module; 2-pulse generator; 3-light source; 4-directional coupler; 5-front tab; 6-tested optical fiber; 7-photodetector; 8-amplifier; 9-analog to digital converter.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
As shown in Figure 1, based on the ONT state verification instrument of Rayleigh scattering technology, it comprises signal controlling and processing module 1, pulse generator 2, light source 3, analog to digital converter 9, amplifier 8, photodetector 7, directional coupler 4, front tab 5, tested optical fiber 6, the output of signal controlling and processing module 1 is connected to pulse generator 2 and analog to digital converter 9, the output of pulse generator 2 is connected with directional coupler 4 by light source 3, directional coupler 4 is connected with tested optical fiber 6 by front tab 5, directional coupler 4 is also connected with photodetector 7, amplifier 8 is connected with between photodetector 7 and analog to digital converter 9, improve speed and the precision of test, shorten the reaction time, decrease loss, reduce maintenance cost.
Signal controlling and processing module 1 comprise controller and arithmetic unit, effectively control and analytical work other module, improve speed and the precision of test, shorten the reaction time.
Signal controlling and processing module 1 are the cores of the ONT state verification instrument based on Rayleigh scattering technology.
Pulse generator 2 and light source 3 are referred to as pulse laser, for launching initial light, are convenient to follow-up comparative analysis work.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (2)
1. based on the ONT state verification instrument of Rayleigh scattering technology, it is characterized in that: it comprises signal controlling and processing module, pulse generator, light source, analog-to-digital conversion, amplifier, photodetector, directional coupler, front tab, tested optical fiber, the output of described signal controlling and processing module is connected to pulse generator and analog to digital converter; The output of described pulse generator is connected with directional coupler by light source; Described directional coupler is connected with tested optical fiber by front tab; Described directional coupler is also connected with photodetector; Describedly between photodetector and analog to digital converter, be connected with amplifier.
2., according to claim 1 based on the ONT state verification instrument of Rayleigh scattering technology, it is characterized in that: described signal controlling and processing module comprise controller and arithmetic unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510392336.1A CN104993864A (en) | 2015-07-02 | 2015-07-02 | Optical network terminal (ONT) state tester based on Rayleigh scattering technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510392336.1A CN104993864A (en) | 2015-07-02 | 2015-07-02 | Optical network terminal (ONT) state tester based on Rayleigh scattering technology |
Publications (1)
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| CN104993864A true CN104993864A (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510392336.1A Pending CN104993864A (en) | 2015-07-02 | 2015-07-02 | Optical network terminal (ONT) state tester based on Rayleigh scattering technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507760A (en) * | 2018-05-31 | 2018-09-07 | 中国南方电网有限责任公司超高压输电公司贵阳局 | A kind of high-voltage convertor station energy-transmission optic fibre link state on-line measuring device |
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|---|---|---|---|---|
| CN1414283A (en) * | 2002-12-10 | 2003-04-30 | 西安交通大学 | Oil gas pipeline leak intelligent on line monitoring method based on distribution type optical fibre sensor |
| CN102128653A (en) * | 2010-12-29 | 2011-07-20 | 上海华魏光纤传感技术有限公司 | Distributed optical fiber flow measuring device and method |
| CN102136867A (en) * | 2010-12-22 | 2011-07-27 | 华为技术有限公司 | Method, device and system for detecting branch optical fiber |
| CN103245370A (en) * | 2013-04-10 | 2013-08-14 | 南京大学 | BOTDA (Brillouin Optical Time-Domain Analysis) system based on pulse coding and coherent detection |
| US20160006503A1 (en) * | 2013-02-25 | 2016-01-07 | Zte Corporation | OTDR optical path detection device and method |
-
2015
- 2015-07-02 CN CN201510392336.1A patent/CN104993864A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1414283A (en) * | 2002-12-10 | 2003-04-30 | 西安交通大学 | Oil gas pipeline leak intelligent on line monitoring method based on distribution type optical fibre sensor |
| CN102136867A (en) * | 2010-12-22 | 2011-07-27 | 华为技术有限公司 | Method, device and system for detecting branch optical fiber |
| CN102128653A (en) * | 2010-12-29 | 2011-07-20 | 上海华魏光纤传感技术有限公司 | Distributed optical fiber flow measuring device and method |
| US20160006503A1 (en) * | 2013-02-25 | 2016-01-07 | Zte Corporation | OTDR optical path detection device and method |
| CN103245370A (en) * | 2013-04-10 | 2013-08-14 | 南京大学 | BOTDA (Brillouin Optical Time-Domain Analysis) system based on pulse coding and coherent detection |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507760A (en) * | 2018-05-31 | 2018-09-07 | 中国南方电网有限责任公司超高压输电公司贵阳局 | A kind of high-voltage convertor station energy-transmission optic fibre link state on-line measuring device |
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Application publication date: 20151021 |