CN202772891U - 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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- CN202772891U CN202772891U CN 201220388939 CN201220388939U CN202772891U CN 202772891 U CN202772891 U CN 202772891U CN 201220388939 CN201220388939 CN 201220388939 CN 201220388939 U CN201220388939 U CN 201220388939U CN 202772891 U CN202772891 U CN 202772891U
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Abstract
The utility model 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. The 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. The 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 utility model 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. 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 utility model 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, 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 to 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 to set up new ODF-main distribution frame for fiber (OMDF) in measuring chamber, are used for being concentrated into end, being connected and dispatching and concentrated measurement of equipment optical cable and outdoor optical cable.Network construction characteristic for optical fiber access " low cost, high power capacity, extensively covering, full-service, high intercommunication, can monitor ", determined the concentrated access network framework that converges take optical fiber access zone center as the flattening of basic access point, simultaneously, for 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 in the future needs of the maintenance works such as automatic monitoring, scheduling and difficulty measurement.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.The 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 of from now on large-scale optical fiber access of to satisfy effectively, concentrate the automatic monitoring test, improve network operation maintenance efficiency and returns of investment.
Do not consider to concentrate the needs of photo measure for existing fiber main frame OMDF, more do not introduce the concept of professional online bidirectional measurement.For the optical fiber of passing by on one's way, if need to test, need interrupting service, use light source, light power meter or OTDR to carry out the sectionalization test of professional off-line, this is larger to customer impact.
Summary of the invention
It is a kind of based on concentrating the online two-way test cell of main distribution frame for fiber under the photo measure that the purpose of this utility model is to provide, this two-way test cell can be realized the two-way on-line testing test of non-interrupting service, can improve maintenance efficiency, reduce user's business blocking-up rate.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts 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 series winding between the test port of described two wavelength division multiplexers; The outer line cap of WDM wavelength division multiplexer is used for the outer line cap of the unit, fibre-optic terminus of connection 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.
Described filter allow the professional optical wavelength passed through at 1260mm between the 1613nm; Professional light Insertion Loss is less than or equal to 1.0dB; The test light Insertion Loss is less than 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 utility model has the advantage of: by the 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 in the situation that non-interrupting service, the function of PON On-line network monitoring is provided, and the consumption that farthest reduces the machine room space hold and save fiber optic materials, meet again the requirement of telecommunications room ODF/OMDF maintenance management and operating habit simultaneously.
Description of drawings
Fig. 1 is the optical principle schematic diagram of the online two-way test cell of the utility model main distribution frame for fiber.
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 for connecting the outer line interface of unit, fibre-optic terminus.
Fig. 2 is the practical application schematic diagram of the online two-way test cell of the utility model main distribution frame for fiber.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
By 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, at the on-line monitoring of the inner jumping fiber realization of ODF/OMDF frame for the optical cable of passing by on one's way, the final professional online impregnable function of optical cable that realizes passing by on one's way.As shown in Figure 2, purpose of the present 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, professional light in test light and the optical cable of passing by on one's way is closed ripple, with test light send into A 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 series winding between the test port of described two wavelength division multiplexers; The outer line cap of WDM wavelength division multiplexer is used for the outer line cap of the unit, fibre-optic terminus of connection 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, filter allow the professional optical wavelength passed through at 1260mm between the 1613nm; Professional light Insertion Loss is less than or equal to 1.0dB; The test light Insertion Loss is less than 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 to the less insertion loss of Communication ray signal and test light signal (≤1.2dB), and larger 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 series winding between the test port of described two wavelength division multiplexers; The outer line cap of WDM wavelength division multiplexer is used for the outer line cap of the unit, fibre-optic terminus of connection 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, described filter allow the professional optical wavelength passed through at 1260mm between the 1613nm; Professional light Insertion Loss is less than or equal to 1.0dB; The test light Insertion Loss is less than 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220388939 CN202772891U (en) | 2012-08-07 | 2012-08-07 | Online bidirectional testing unit of optical main distribution frame based on concentrated light measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220388939 CN202772891U (en) | 2012-08-07 | 2012-08-07 | Online bidirectional testing unit of optical main distribution frame based on concentrated light measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202772891U true CN202772891U (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220388939 Expired - Fee Related CN202772891U (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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| CN (1) | CN202772891U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801465A (en) * | 2012-08-07 | 2012-11-28 | 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 |
-
2012
- 2012-08-07 CN CN 201220388939 patent/CN202772891U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801465A (en) * | 2012-08-07 | 2012-11-28 | 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20170807 |
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| CF01 | Termination of patent right due to non-payment of annual fee |