CN103795460B - A kind of fiber optic network supervisory systems - Google Patents
A kind of fiber optic network supervisory systems Download PDFInfo
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- CN103795460B CN103795460B CN201410004161.8A CN201410004161A CN103795460B CN 103795460 B CN103795460 B CN 103795460B CN 201410004161 A CN201410004161 A CN 201410004161A CN 103795460 B CN103795460 B CN 103795460B
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Abstract
The invention discloses a kind of fiber optic network supervisory systems, including the characteristic that there is the reflection-absorption of different wave length to compose for the different branches realized in fiber optic network, and the Intelligent light shunt for setting the reflecting filter and back wave leakage structure of different reflection wavelengths to be formed on the fiber waveguide branch road in optical branching device, fiber optic network is monitored and management and control with order to realize, in the intelligent spectrum analysis comparative apparatus of local side, fiber optic network supervisory systems of the present invention, localization of fault in the prior art can be overcome inaccurate, network state can not be obtained in real time, and the defects of maintenance and big operation cost, to realize that localization of fault is accurate, network state can be obtained in real time, and safeguard the advantages of low with operation cost.
Description
Technical field
The present invention relates to the optical shunt device in optical communication and optical-fiber network regulation technique field, in particular it relates to a kind of light
Fibre web network supervisory systems.
Background technology
Fiber optic network is due to its transmission rate height, using the advantages that channel is wide, transmission performance is reliable in communication network and biography
Substantial amounts of application has been obtained in sense net.And gradually becoming strong with optic fiber network function, the complexity of fiber optic network are also continuous
Rise, the monitoring and maintenance of fiber optic network are faced with huge challenge.
Fiber to the home（FTTH）The large scale deployment of network brings huge to management of the operator for optical fiber in network
Challenge.In the network construction stage, the mode that operator has to manually generates topology distribution figure.In addition, transported in FTTH networks
Battalion's generation problem needs to use optical time domain reflectometer（OTDR）When confirming trouble point, due to distribution cable length often, fortune
Battalion business often has to send engineer to determine the position of fault to scene.
It can be seen that traditional fiber network monitoring scheme can not be accurately positioned to trouble point, can not real-time perception optical fiber
The state of network, therefore the cost of maintenance and the operation of fiber optic network greatly increases.
During the present invention is realized, it is inaccurate, no that inventor has found at least to exist in the prior art localization of fault
The defects of network state and maintenance and big operation cost can be obtained in real time.
The content of the invention
It is an object of the present invention in view of the above-mentioned problems, a kind of fiber optic network supervisory systems is proposed, to realize that trouble point is determined
Level is true, can obtain network state in real time and safeguard the advantages of low with operation cost.
To achieve the above object, the technical solution adopted by the present invention is：A kind of fiber optic network supervisory systems, including for reality
Different branches in existing fiber optic network have the characteristic of the reflection-absorption spectrum of different wave length, and set the reflection of different reflection wavelengths
The Intelligent light shunt that formula wave filter and back wave leakage structure are formed on the fiber waveguide branch road in optical branching device.
Further, the Intelligent light shunt has different reflection-absorption spectrums in its different waveguide branch, so as to
The different branches of its optical-fiber network connected is also provided with the absorption spectra of different wave length, optical-fiber network is indicated with this different absorption spectra
Branch, realize the coding to optical-fiber network branch.
Further, include and the coding of optical-fiber network branch is engaged installed in light net with the Intelligent light shunt
The spectrum analysis comparative apparatus of network local side, to realize that the decoding of optical-fiber network branch, identification and network state are analyzed.
Further, the local side spectrum analysis comparative apparatus, including with requiring selected by the intelligent optical branching device described in 1
The CWDM device and dense wave division multiplexer part that reflection-absorption wavelength matches, to realize in local side to optical-fiber network branch
The analysis contrast of reflection-absorption spectrum.
Further, the local side spectrum analysis comparative apparatus, including spectral scan device.
Further, the Intelligent light shunt, including be integrally disposed in its each fiber waveguide branch and have not
With the reflecting filter and back wave leakage structure of reflection wavelength.
Further, the Intelligent light shunt, the fiber waveguide bifurcation structure of light splitting function has been further comprises.
Further, Intelligent light shunt, including the use of radio frequency identification of its reflection-absorption wavelength as coding
（RFID）Chip；Reflection-absorption wavelength and phase with identification intelligent optical branching device can be read by holding code reading device using RFID
Close device parameters.
Further, above-described fiber optic network supervisory systems, in addition to be arranged on the local side apparatus of fiber optic network with
Gateway between multiple fiber ports.
Further, the gateway includes wavelength-division multiplex（WDM）Device and 1 X N Multichannel photoswitchs.
The fiber optic network supervisory systems of various embodiments of the present invention, due to including in order to realize the different branches in fiber optic network
With different wave length reflection-absorption spectrum characteristic and set different reflection wavelengths reflecting filter and back wave leakage knot
The Intelligent light shunt that structure is formed on the fiber waveguide branch road in optical branching device, in addition to Intelligent light shunt to light net
The coding of network branch is engaged the spectrum analysis comparative apparatus installed in optical network local side；The difference in fiber optic network can be utilized
Branch has the characteristic of the reflection-absorption spectrum of different wave length, realizes on-line monitoring network state, the function of fault point, realizes
The physics of optical-fiber network branch can query function；So as to overcome, localization of fault in the prior art is inaccurate, can not obtain in real time
The defects of taking network state and maintenance and big operation cost, to realize that localization of fault is accurate, it is network-like to obtain in real time
The advantages of state and maintenance low with operation cost.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
Obtain it is clear that or being understood by implementing the present invention.
Below by drawings and examples, technical scheme is described in further detail.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
Apply example to be used to explain the present invention together, be not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the reflecting filter of each branch difference reflection wavelength and back wave leakage in optical shunt device of the present invention
The principle of compositionality schematic diagram of structure；
Fig. 2 is traditional optical shunt device（Specially 1X8 optical shunt devices）Principle of compositionality figure；
Fig. 3 is a kind of spectral schematic of reflected light；
Fig. 4 is another spectral schematic of reflected light.
Fig. 5 is the optical fiber network system principle of compositionality figure that can be supervised
With reference to accompanying drawing, reference is as follows in the embodiment of the present invention：
1- reflecting filters；2- back wave leakage structures；3- light waves；4- local side optical fiber cable termination equipment（OLT）System；5-
Wavelength division multiplexer（WDM）；6- optical fiber；7- Intelligent light shunts；8- optical network node units（ONU）；9- photoswitches, wide light source
With spectrum analysis identification equipment.
Embodiment
The preferred embodiments of the present invention are illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein preferred real
Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Distribution cable is determined in order to solve Operator remote, network state, fault point is monitored in real time, automatically generates and open up
The problem of flutterring structure chart, according to embodiments of the present invention, as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, there is provided a kind of fiber optic network
Supervisory systems, can solve operator's existing fiber network, the problem that especially EPON management is difficult, maintenance cost is high.
The fiber optic network management system principle of compositionality of embodiment is as shown in Figure 5.
Referring to Fig. 1, the fiber optic network supervisory systems of the present embodiment, including in order to realize that the different branches in fiber optic network have
There is the characteristic of the reflection-absorption spectrum of different wave length, and the reflecting filter of different reflection wavelengths is set（Such as reflecting filter
1）Structure is revealed with back wave（Such as back wave leakage structure 2）The Intelligent light formed on fiber waveguide branch road in optical branching device
Shunt.Specifically, the Intelligent light shunt has different reflection-absorption spectrums in its different waveguide branch, so that its
The different branches of the optical-fiber network of connection are also provided with the absorption spectra of different wave length, and point of optical-fiber network is indicated with this different absorption spectra
Branch, realizes the coding to optical-fiber network branch.The fiber optic network supervisory systems, in addition to Intelligent light shunt to optical-fiber network point
The coding on road is engaged the spectrum analysis comparative apparatus installed in optical network local side, to realize the decoding of optical-fiber network branch, identification
Analyzed with network state.Specifically, local side spectrum analysis comparative apparatus, the reflection-absorption selected by with intelligent optical branching device is also included
The CWDM device and dense wave division multiplexer part or spectral scan device that wavelength matches, to realize in local side to light net
The analysis contrast of network branch reflection-absorption spectrum.The fiber optic network supervisory systems, in addition to it is arranged on the local side apparatus of fiber optic network
With the gateway between multiple fiber ports, the gateway includes wavelength-division multiplex（WDM）Device and 1 X N Multichannel photoswitchs, to realize
Supervision of the same local side spectrum analysis comparative apparatus to multi-channel optical fibre port.Intelligent light shunt in the other system, also
It may include the radio frequency identification for using its reflection-absorption wavelength as coding（RFID）Chip；Utilize radio frequency identification（RFID）It is hand-held to read
Decoding apparatus can read the reflection-absorption wavelength and relevant device parameters with identification intelligent optical branching device.
The fiber optic network supervisory systems of above-described embodiment, by described intelligent optical branching device, realize in fiber optic network
Different branches have different wave length reflection-absorption spectrum characteristic.Network monitoring wavelength is inputted in the local side of this optical-fiber network
Broadband light, the spectrum returned by scanning reflection or utilizes CWDM（CWDM）, dense wave division multipurpose（DWDM）Device
Reflectance spectrum is analyzed, contrasted and identified, realizes on-line monitoring network state, the function of fault point；In this light
The broadband light of the user terminal input network monitoring wavelength of network, the spectrum received in local side by scanning or the thick wavelength-division of utilization
Multiplexing（CWDM）, dense wave division multipurpose（DWDM）Device docking is identified by spectrum, and the topological structure of optical-fiber network is obtained in local side.
By radio frequency identification（RFID）The coding of chip is corresponding with the wavelength absorption spectrum of optical shunt device, and by radio frequency identification（RFID）Chip
Integrate to form intelligent optical shunt device with optical shunt device, realize that the physics of optical-fiber network branch can query function.
The operation principle of traditional optical shunt device, may refer to Fig. 2.In fig. 2,1X8 optical shunt devices are by 3 grades
What 1X2 structures in series formed.The filtering realization that 2 wavelength are introduced in every one-level is compiled to each branch of optical shunt device
Code, its principle filtered, it may refer to Fig. 1.Therefore the optical shunt device for 1X8 just needs to introduce the filtering of 6 wavelength,
1X16 needs 8 wavelength, and 1X32 needs 10 wavelength, and 1X64 needs 12 wavelength.Arrived in network monitoring wavelength 1620nm
In the range of 1650nm, the filtering of 12 wavelength, the full width at half maximum (FWHM) of its reflecting filter are designed（FWHM）It is that can meet completely
It is required that, i.e., the structure designed using the applicant, can be to each branch road of 1X64 light splitting in network monitoring wave-length coverage
Encoded.Radio frequency identification is used as using filter wavelength（RFID）The coding of chip, while by radio frequency identification（RFID）Chip is embedding
Enter into optical shunt device, then pass through radio frequency identification（RFID）Hand-held code reading device can just be read and identification intelligent light point
The reflection-absorption wavelength and relevant device parameters of road device.
When local side apparatus passes through gateway（Can be WDM and Multichannel photoswitch）, input a broadband light and arrive local side apparatus
During one fiber port, if there is open circuit in branching networks below the port, during its fault plane reflection, will reflecting part be divided back
To local side, the spectrum of its reflected light, referring to Fig. 3 and Fig. 4.By the wavelength for contrasting reflectance spectrum absworption peak, it is possible to know which is
Road optical branch there is a problem in which level.Identical principle, if inputting a broadband light in user terminal, then local side also can
Receive similar spectrum, more different spectral absorption peaks, it is possible to know just being transmitted through from which branch for this terminal
Come, thus can marks the network topological diagram of this terminal.
The analysis contrast of local side spectrum, can use the method for spectral scan to realize；A kind of special sum can also be designed
The CWDM that selected filter wavelength matches（CWDM）, dense wave division multipurpose（DWDM）Device realizes pair of local side spectrum
Than, make spectroscopic analysis system more specialized, to the reliability of equipment, cost and and local side apparatus integration have one
Fixed meaning.
In summary, the fiber optic network supervisory systems of the various embodiments described above of the present invention, by light point in fiber optic network
The intellectuality that the reflecting filter of different reflection wavelengths and back wave leakage structure are formed is integrated in the device of road on branch waveguide
Optical shunt device, realize that the different branches in fiber optic network have the characteristic of reflection-absorption spectrum of different wave length；In this light net
The broadband light of the local side input network monitoring wavelength of network, the spectrum returned by scanning reflection, or utilize CWDM
（CWDM）, dense wave division multipurpose（DWDM）Device is analyzed, contrasted and identified, realize on-line monitoring network to reflectance spectrum
State, the function of fault point；The broadband light of network monitoring wavelength is inputted in the user terminal of this optical-fiber network, is led in local side
Over-scan the spectrum received or utilize CWDM（CWDM）, dense wave division multipurpose（DWDM）Device docking is known by spectrum
Not, the topological structure of optical-fiber network is obtained in local side；By radio frequency identification（RFID）The coding of chip and the wavelength of optical shunt device are inhaled
It is corresponding to receive spectrum, and by radio frequency identification（RFID）Chip and optical shunt device integrate to form intelligent optical shunt device, realize
The physics of optical-fiber network branch can query function.This fiber optic network supervisory systems based on intelligent optical shunt device, solve
The problem that the management of existing fiber network, especially EPON is difficult, maintenance cost is high.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention,
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (6)
1. a kind of fiber optic network supervisory systems, it is characterised in that including for realizing that the different branches in fiber optic network have not
The reflection-absorption spectral property of co-wavelength and by being integrally disposed in its each fiber waveguide branch and with different reflection wavelengths
The Intelligent light shunt that reflecting filter and back wave leakage structure are formed；The Intelligent light shunt is in fiber waveguide branch
Different waveguide branch in road has different reflection-absorption spectrums, so that the different branches of the optical-fiber network of its connection are also provided with
The absorption spectra of different wave length, the branch of optical-fiber network is indicated with this different absorption spectra, realizes the coding to optical-fiber network branch；Also wrap
Include the spectrum analysis contrast being engaged with the Intelligent light shunt to the coding of optical-fiber network branch installed in optical network local side
Equipment, for realizing that the decoding, identification and network state of optical-fiber network branch are analyzed；The Intelligent light shunt, in addition to rise
It is divided the fiber waveguide bifurcation structure of function.
2. fiber optic network supervisory systems according to claim 1, it is characterised in that the local side spectrum analysis contrast is set
CWDM device and dense wavelength division standby, including match with the reflection-absorption wavelength selected by described intelligent optical branching device
Multiplexing device, for realizing the analysis contrast composed in local side to optical-fiber network branch reflection-absorption.
3. fiber optic network supervisory systems according to claim 1, it is characterised in that the local side spectrum analysis contrast is set
It is standby, including spectral scan device.
4. fiber optic network supervisory systems according to claim 1, it is characterised in that the Intelligent light shunt, including
Radio frequency discrimination RFID chip using its reflection-absorption wavelength as coding；Holding code reading device using radio frequency discrimination RFID can
Read the reflection-absorption wavelength and relevant device parameters with identification intelligent optical branching device.
5. fiber optic network supervisory systems according to claim 1, it is characterised in that also include the office for being arranged on fiber optic network
Gateway between end equipment and multiple fiber ports.
6. fiber optic network supervisory systems according to claim 5, it is characterised in that the gateway includes wave division multiplexing WDM
Device and 1 X N Multichannel photoswitchs.
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| CN201410004161.8A CN103795460B (en) | 2014-01-06 | 2014-01-06 | A kind of fiber optic network supervisory systems |
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| CN201410004161.8A CN103795460B (en) | 2014-01-06 | 2014-01-06 | A kind of fiber optic network supervisory systems |
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| CN103269247A (en) * | 2013-06-03 | 2013-08-28 | 深圳市科信通信技术股份有限公司 | Intelligent optical marker, optical branching device and PON network monitoring system |
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