CN102801465A - Online bidirectional testing unit of optical main distribution frame based on concentrated light measurement - Google Patents
Online bidirectional testing unit of optical main distribution frame based on concentrated light measurement Download PDFInfo
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- CN102801465A CN102801465A CN2012102787737A CN201210278773A CN102801465A CN 102801465 A CN102801465 A CN 102801465A CN 2012102787737 A CN2012102787737 A CN 2012102787737A CN 201210278773 A CN201210278773 A CN 201210278773A CN 102801465 A CN102801465 A CN 102801465A
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Abstract
The invention discloses an online bidirectional testing unit of an optical main distribution frame based on concentrated light measurement. The online bidirectional testing unit comprises two WDM (Wavelength Division Multiplexing) devices and a filter; the filter is connected in series between testing ports of the two wavelength division multiplexing devices; the testing ports of the two WDM devices are further used for inputting testing light; external wire ports of the WDM devices are used for connecting an external wire port of an optical fiber terminal unit of an optical distribution frame or the optical main distribution frame; and internal wire ports of the WDM devices are used for connecting an internal wire port of the optical fiber terminal unit of the optical distribution frame or the optical main distribution frame. The online bidirectional testing unit provided by the invention is arranged inside the terminal unit of the ODF (Optical Distribution Frame)/OMDF (Optical Main Distribution Frame), so that a function of monitoring a PON (Passive Optical Network) online can be provided, and the rate of occupying a motor room space and the consumption of saving an optical fiber material can be reduced to the greatest extent. Meanwhile, the requirements of ODF/OMDF maintenance management of the telecom motor space and operation habits can be met.
Description
Technical field
The present invention relates to the online two-way test cell of a kind of main distribution frame for fiber.
Background technology
Main distribution frame for fiber (OMDF) is very important in an optical access network part, and the appearance of light main frame and use are inseparable with the extensive use of optical access network.Because the extensive use of optical cable; The rubber-insulated wire or the twisted-pair feeder of originally registering one's residence will be replaced by optical fiber gradually; The thing followed is that a large amount of optical cable need be at intra-office Cheng Duan, original optical cable Cheng Duan is unfavorable for the maintenance of a large amount of optical cables and the construction of optical access network in the mode of optical cable chamber or transfer chamber.Therefore, a lot of operators have begun in measuring chamber, to set up new ODF-main distribution frame for fiber (OMDF), are used for being concentrated into end, being connected and dispatching and concentrated measurement of equipment optical cable and outdoor optical cable.Insert the network construction characteristic of " low cost, high power capacity, extensively covering, full-service, high intercommunication, can monitor " to optical fiber; Confirmed that inserting zone center with optical fiber is the basic concentrated access network framework that converges of flattening that inserts the office point; Simultaneously; To the technology of concentrating photo measure, will have now light main frame (OMDF) line end plaste be transformed into have on-line testing port preparatory function the unit to adapt to the needs of maintenance works such as monitoring automatically, scheduling and difficulty measurement in the future.Zone center need be set up optical fiber measurement chamber and main distribution frame for fiber, realizes centralized monitor, scheduling and difficulty measurement to the optical fiber of Optical Access Network network.Innovative ideas such as centralized dispatching management, distributed cable tray setting, open uninterrupted optical test path port introducing; With the centralized dispatching management of the optical fiber that effectively satisfies large-scale optical fiber access from now on, concentrated automatic control and measuring, improve network operation maintenance efficiency and returns of investment.
Do not have the needs of considering to concentrate photo measure for existing fiber main frame OMDF, more do not introduce the notion of professional online bidirectional measurement.For the optical fiber of passing by on one's way, test if desired, need interrupting service, use light source, light power meter or OTDR to carry out the sectionalization test of professional off-line, this is bigger to customer impact.
Summary of the invention
The purpose of this invention is to provide a kind ofly based on concentrating the online two-way test cell of main distribution frame for fiber under the photo measure, this two-way test cell can be realized the two-way on-line testing test of non-interrupting service, can improve maintenance efficiency, reduces user's business blocking-up rate.
For solving the problems of the technologies described above; The technical scheme that the present invention adopted is: based on concentrating the online two-way test cell of main distribution frame for fiber under the photo measure; Comprise two WDM wavelength division multiplexers and a filter, filter of polyphone between the test port of described two wavelength division multiplexers; The outer line cap of WDM wavelength division multiplexer is used to connect the outer line cap of the unit, fibre-optic terminus of fibre distribution frame or main distribution frame for fiber, and the interior line cap of WDM wavelength division multiplexer is as the test light input port.
The professional optical wavelength that described filter allows to pass through at 1260mm between the 1613nm; Professional light Insertion Loss is smaller or equal to 1.0dB; The test light Insertion Loss is smaller or equal to 2.5dB.
More than or equal to 1.2dB, isolation is more than or equal to 35dB to the insertion loss of Communication ray signal and test light signal for described WDM wavelength division multiplexer.
The invention has the advantages that: through built-in online two-way test cell of the present invention in unit, ODF/OMDF fibre-optic terminus; Under the precondition of not sacrificing original ODF/OMDF frame capacity; Again can be under the situation of non-interrupting service; The function of PON network on-line monitoring is provided, and farthest reduces machine room space hold and the consumption of practicing thrift fiber optic materials, meet the requirement of telecommunications room ODF/OMDF maintenance management and operating habit simultaneously again.
Description of drawings
Fig. 1 is the optical principle sketch map of the online two-way test cell of main distribution frame for fiber of the present invention.
Wherein, Ref is the test port of WDM wavelength division multiplexer, and Com is the outer line cap of WDM wavelength division multiplexer, and Pas is the interior line cap of WDM wavelength division multiplexer; A1, A2 are the test light input ports of two-way test cell, and B1, B2 are used to connect the outer line interface of unit, fibre-optic terminus.
Fig. 2 is the practical application sketch map of the online two-way test cell of main distribution frame for fiber of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is further specified.
Through the multiplexing WDM assembly of unit, fibre-optic terminus Build-in WDM at Optical Distribution Frame or light main frame ODF/OMDF; That can realize test light and professional light closes ripple, partial wave; Realize on-line monitoring at the inner jumping fiber of ODF/OMDF frame, the final professional online impregnable function of optical cable that realizes passing by on one's way to the optical cable of passing by on one's way.As shown in Figure 2; The object of the invention just provides the online two-way test cell of a kind of main distribution frame for fiber; This two-way test cell uses wavelength division multiplexer WDM and filter; Test light and the professional light of passing by on one's way in the optical cable are closed ripple, with test light send A into to B to optical cable in, thereby realized online two-way test.
Based on concentrating the online two-way test cell of main distribution frame for fiber under the photo measure, comprise two WDM wavelength division multiplexers and a filter, filter of polyphone between the test port of described two wavelength division multiplexers; The outer line cap of WDM wavelength division multiplexer is used to connect the outer line cap of the unit, fibre-optic terminus of fibre distribution frame or main distribution frame for fiber, and the interior line cap of WDM wavelength division multiplexer is as the test light input port.
Wherein, the filter professional optical wavelength that allows to pass through at 1260mm between the 1613nm; Professional light Insertion Loss is smaller or equal to 1.0dB; The test light Insertion Loss is smaller or equal to 2.5dB.
Wherein, more than or equal to 1.2dB, isolation is more than or equal to 35dB to the insertion loss of Communication ray signal and test light signal for the WDM wavelength division multiplexer.
Wavelength division multiplexer WDM to have less insertion loss to Communication ray signal and test light signal (≤1.2dB), and bigger isolation (>=35dB).
Claims (3)
1. based on concentrating the online two-way test cell of main distribution frame for fiber under the photo measure, it is characterized in that, comprise two WDM wavelength division multiplexers and a filter, filter of polyphone between the test port of described two wavelength division multiplexers; The outer line cap of WDM wavelength division multiplexer is used to connect the outer line cap of the unit, fibre-optic terminus of fibre distribution frame or main distribution frame for fiber, and the interior line cap of WDM wavelength division multiplexer is as the test light input port.
2. the online two-way test cell of main distribution frame for fiber according to claim 1 is characterized in that, the professional optical wavelength that described filter allows to pass through at 1260mm between the 1613nm; Professional light Insertion Loss is smaller or equal to 1.0dB; The test light Insertion Loss is smaller or equal to 2.5dB.
3. according to claim 1 or the online two-way test cell of 2 described main distribution frame for fiber, it is characterized in that more than or equal to 1.2dB, isolation is more than or equal to 35dB to the insertion loss of Communication ray signal and test light signal for described WDM wavelength division multiplexer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102787737A CN102801465A (en) | 2012-08-07 | 2012-08-07 | Online bidirectional testing unit of optical main distribution frame based on concentrated light measurement |
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| CN2012102787737A CN102801465A (en) | 2012-08-07 | 2012-08-07 | Online bidirectional testing unit of optical main distribution frame based on concentrated light measurement |
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| CN102801465A true CN102801465A (en) | 2012-11-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769844A (en) * | 2017-11-15 | 2018-03-06 | 国网江苏省电力公司徐州供电公司 | A kind of independent plug-in optical multiplexer and on-line monitoring system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338915A (en) * | 2011-08-29 | 2012-02-01 | 南京普住光网络有限公司 | Online test unit for optical main distribution frame (OMDF) on account of centralized optical measurement |
| CN102369679A (en) * | 2011-08-24 | 2012-03-07 | 华为技术有限公司 | Multi-channel optical assembly and test system |
| CN202772891U (en) * | 2012-08-07 | 2013-03-06 | 南京普住光网络有限公司 | Online bidirectional testing unit of optical main distribution frame based on concentrated light measurement |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102369679A (en) * | 2011-08-24 | 2012-03-07 | 华为技术有限公司 | Multi-channel optical assembly and test system |
| CN102338915A (en) * | 2011-08-29 | 2012-02-01 | 南京普住光网络有限公司 | Online test unit for optical main distribution frame (OMDF) on account of centralized optical measurement |
| CN202772891U (en) * | 2012-08-07 | 2013-03-06 | 南京普住光网络有限公司 | Online bidirectional testing unit of optical main distribution frame based on concentrated light measurement |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769844A (en) * | 2017-11-15 | 2018-03-06 | 国网江苏省电力公司徐州供电公司 | A kind of independent plug-in optical multiplexer and on-line monitoring system |
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Application publication date: 20121128 |