CN106911378A - Realize method, management system and the optical time domain reflectometer equipment of light path detection - Google Patents
Realize method, management system and the optical time domain reflectometer equipment of light path detection Download PDFInfo
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- CN106911378A CN106911378A CN201510976652.3A CN201510976652A CN106911378A CN 106911378 A CN106911378 A CN 106911378A CN 201510976652 A CN201510976652 A CN 201510976652A CN 106911378 A CN106911378 A CN 106911378A
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- management system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
Abstract
The invention discloses a kind of multi-wavelength passive optical network PON light paths detection method, management system and optical time domain reflectometer OTDR equipment for realizing the CAWG of waveguide optical grating containing circular array, it is related to optical communication field.Method therein includes：Management system determines the corresponding CAWG access ports of branch optical fiber to be detected, and the cyclophysis according to CAWG obtains the corresponding multiple periodicity wavelength of CAWG access ports；Management system coordinates scope and non-OLTx operation wavelengths is selected from the multiple periodicity wavelength as test wavelength according to the wavelength of optical time domain reflectometer OTDR equipment；Test wavelength information is sent to optical time domain reflectometer OTDR equipment by management system, and notifies that OTDR equipment treats detection branches optical fiber and carries out light path detection in the corresponding test wavelengths of CAWG access ports OLTx.So as in the case where hardware module need not be increased, realize the WDM-PON light paths detection containing CAWG, and realize the detection of the light path when Optical Distribution Network ODN does not possess optical line terminal OLT test condition.
Description
Technical field
It is more particularly to a kind of to realize the (Cyclical containing CAWG the present invention relates to optical communication field
Arrayed Waveguide Grating, cyclic array waveguide raster) WDM-PON
(Wavelength Division Multiplexing-Passive Optical Network, ripple
Division multiplexing passive optical network network) light path detection method, management system and OTDR (Optical
Time Domain Reflectometer, optical time domain reflectometer) equipment.
Background technology
The construction of city light net in recent years is gradually increasing.The PON system of deployment it is main by
OLT (Optical Line Terminal, optical line terminal) equipment, ONU (Optical
Network Unit, optical network node) equipment and ODN (Optical Distribution
Network, Optical Distribution Network) composition.Wherein ODN equipment it is main by trunk optical fiber, point
The optical splitter of both branch optical fiber and connection is constituted.A kind of unrelated device of wavelength of optical splitter,
That is effective optical wavelength (1260nm-1650nm) of communication system can be transferred through optical splitter,
Differing only in loss of signal of the optical signal of different-waveband when by optical splitter can be different.
During evolution on direction of the PON system to Large Copacity and high bandwidth, one is occurred in that
Plant WR-ODN's (Wavelength Router ODN, lambda router ODN)
WDM-PON networking models and system.ODN in the system is by trunk optical fiber, branch's light
The CAWG compositions of both fine and connections.And pass through in different port the characteristics of CAWG
Corresponding periodicity wavelength group optical signal.And a certain group of wavelength signals can pass through some port
During to branch optical fiber, cannot be entered into remaining branch optical fiber by other ports.
This brings obstacle with regard to carrying out light path detection to tradition application OTDR technique, because traditional
The centre wavelength of OTDR equipment is all 1625nm or 1650nm, and its test for sending
Optical signal is all the signal for possessing certain spectrum width, basically can not be arrived by the port of CAWG
Up to branch optical fiber, so as to cannot complete to test the recovery and treatment of feedback signal on branch optical fiber.
As shown in Figure 1.
In the prior art, have a solution be on the optical module transceiver of OLT sides,
By the way of descending or upstream data launching light, low frequency sequence is superimposed by way of adjusting top
Optical test signal so that there is identical wavelength after test optical signal and the superposition of data optical signal,
With different frequencies.Optical signal will be tested as data optical signal is reached through CAWG together
Branch optical fiber, performs test.What but the program was technically feasible, but have two kinds of shortcomings
Or it is not enough：One is the optical mode of each wavelength channel in the PON system of multi-wavelength passage
Block is required for increasing such built-in tune backform block, increases module volume and reduces module integrated level,
And increased great amount of cost；Two is that network ODN construction in the early stage does not possess OLT test-strips also
During part, it is impossible to which the light path detection function of ODN is provided.
The content of the invention
A technical problem to be solved by this invention is：How hardware module need not increased
In the case of realize that the WDM-PON light paths containing CAWG are detected, and how to realize in ODN
Do not possess light path detection during OLT test conditions.
One side according to embodiments of the present invention, there is provided one kind realizes Waveguide containing circular array
The multi-wavelength passive optical network PON light path detection methods of grid CAWG, including：Management system
Determine the corresponding CAWG access ports of branch optical fiber to be detected, the cycle according to CAWG is special
Property obtain the corresponding multiple periodicity wavelength of CAWG access ports；When management system is according to light
The wavelength of domain reflectometer OTDR equipment is coordinated scope and is selected from the multiple periodicity wavelength
Non- OLTx operation wavelengths are used as test wavelength；Test wavelength information is sent to light by management system
Time-domain reflectomer OTDR equipment, and notify OTDR equipment in CAWG access ports OLTx
Detection branches optical fiber is treated in corresponding test wavelength carries out light path detection.
Other side according to embodiments of the present invention, there is provided one kind realizes train wave containing cyclic matrix
The multi-wavelength passive light net PON network light path detection methods of guide grating CAWG, including：OTDR
Equipment receives the corresponding test wavelength information of AWG access ports OLTx from management system；
In response to the detection notice that management system sends, OTDR equipment is in AWG access ports
Treating detection branches optical fiber in the corresponding test wavelength information of OLTx carries out light path detection.
Another aspect according to embodiments of the present invention, there is provided one kind realizes train wave containing cyclic matrix
The OTDR equipment of the multi-wavelength passive optical network PON light paths detection of guide grating CAWG,
Including：Information receiving module, for receiving the AWG access ports OLTx from management system
Corresponding test wavelength information；Light path detection module, for the inspection sent in response to management system
Survey and notify, OTDR equipment is in the corresponding test wavelength information of AWG access ports OLTx
Treating detection branches optical fiber carries out light path detection.
Another aspect according to embodiments of the present invention, there is provided one kind realizes train wave containing cyclic matrix
The OTDR equipment of the multi-wavelength passive optical network PON light paths detection of guide grating CAWG,
Including：Information receiving module, for receiving the AWG access ports OLTx from management system
Corresponding test wavelength information；Light path detection module, for the inspection sent in response to management system
Survey and notify, OTDR equipment is in the corresponding test wavelength information of AWG access ports OLTx
Treating detection branches optical fiber carries out light path detection.
The present invention at least has advantages below：
In the case where hardware module need not be increased, realized by adjustable transceiver and contained
CAWG WDM-PON light paths detection, and realize ODN do not possess OLT survey
Light path detection during strip part.
By referring to the drawings to the detailed description of exemplary embodiment of the invention, the present invention
Further feature and its advantage will be made apparent from.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will
The accompanying drawing to be used needed for embodiment or description of the prior art is briefly described, it is clear that
Ground, drawings in the following description are only some embodiments of the present invention, for the common skill in this area
For art personnel, without having to pay creative labor, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 shows that tradition application OTDR technique cannot realize the WDM-PON containing CAWG
The schematic diagram of light path detection.
Fig. 2 shows that the present invention realizes of the multi-wavelength PON light path detection methods containing CAWG
The schematic flow sheet of individual embodiment.
Fig. 2A and Fig. 2 B show CAWG eight access port institutes in each mode jointly
Corresponding frequency, wavelength and frequency interval.
Fig. 3 shows that the present invention realizes the schematic diagram that the multi-wavelength PON light paths containing CAWG are detected.
Fig. 4 shows that the present invention realizes the another of the multi-wavelength PON light path detection methods containing CAWG
The schematic flow sheet of one embodiment.
Fig. 5 shows that the present invention realizes the another of the multi-wavelength PON light path detection methods containing CAWG
The business processing flow schematic diagram of one embodiment.
Fig. 6 shows that the present invention realizes the management system that the multi-wavelength PON light paths containing CAWG are detected
The structural representation of one embodiment of system.
Fig. 7 shows that the present invention realizes the management system that the multi-wavelength PON light paths containing CAWG are detected
The structural representation of another embodiment of system.
Fig. 8 shows that the present invention realizes the OTDR that the multi-wavelength PON light paths containing CAWG are detected
The structural representation of one embodiment of equipment.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical scheme in the embodiment of the present invention
It is clearly and completely described, it is clear that described embodiment is only a real part of the invention
Example is applied, rather than whole embodiments.Below to the description reality of at least one exemplary embodiment
It is merely illustrative on border, never as to the present invention and its application or any limitation for using.
Based on the embodiment in the present invention, those of ordinary skill in the art are not before creative work is made
The every other embodiment for being obtained is put, the scope of protection of the invention is belonged to.
The multi-wavelength PON for realizing CAWG of one embodiment of the invention is described with reference to Fig. 2
Light path detection method.
Fig. 2 shows that the present invention realizes an implementation of the multi-wavelength optical path detection method containing CAWG
The schematic flow sheet of example.As shown in Fig. 2 the method for the embodiment includes：
Step S202, management system determines the corresponding CAWG tunnel ends of branch optical fiber to be detected
Mouthful, the cyclophysis according to CAWG obtains CAWG access ports corresponding multiple cycles
Property wavelength.Wherein, OLTx represents certain AWG access port.
For example, CAWG has six kinds of patterns, eight access port OLT1 under each pattern
Frequency, wavelength and frequency interval corresponding to OLT8 are as shown in Figure 2 A and 2 B.
Management system determines the corresponding CAWG access ports of branch optical fiber to be detected, and from resource system
CAWG access ports OLT1 corresponding wavelength under six kinds of patterns is obtained in the information of record
Frequency 196.250THz, 195.580THz, 195.451THz, 195.051THz, 194.652THz,
194.252THz。
Step S204, management system is coordinated according to the wavelength of optical time domain reflectometer OTDR equipment
Scope selects non-OLTx operation wavelengths as test wavelength from the multiple periodicity wavelength.
For example, the wavelength tuning range of OTDR equipment is 195.000THz~196.000THz.
Management system can be being in OTDR equipment in corresponding six frequencies of selection port OLT1
Frequency in wavelength tuning range 195.000THz~196.000THz as test frequency, i.e.,
Test frequency can be 195.580THz, 195.451THz, 195.051TH.
Test wavelength information is sent to optical time domain reflectometer by step S206, management system
OTDR equipment, and notify that OTDR equipment is corresponding in CAWG access ports OLTx
Detection branches optical fiber is treated in test wavelength carries out light path detection.
Step S214, in response to the detection notice that management system sends, OTDR equipment is in AWG
Treating detection branches optical fiber in the corresponding test wavelength information of access port OLTx carries out light path inspection
Survey.
The above method realizes the multi-wavelength PON light path detection process of CAWG, as shown in Figure 3.
Obtain the corresponding multiple wavelength informations of CAWG access ports OLT1 in advance by management system,
And OTDR is notified by detection signal is sent on the corresponding wavelength of CAWG access ports OLT1,
So as in the case where hardware module need not be increased, realize the multi-wavelength PON containing CAWG
Light path detect, and realize Optical Distribution Network ODN do not possess optical line terminal OLT test
Light path detection during condition.
The multi-wavelength PON for realizing CAWG of one embodiment of the invention is described with reference to Fig. 4
Light path detection method.
Fig. 4 shows that the present invention realizes another reality of the multi-wavelength optical path detection method containing CAWG
Apply the schematic flow sheet of example.As shown in figure 4, on the basis of above-mentioned embodiment illustrated in fig. 2,
The method of the embodiment also includes after step S202~S208：
Be sent to for the corresponding length information of branch optical fiber to be detected by step S409, management system
OTDR equipment, and notify that OTDR equipment predicts the length of testing speech t of branch optical fiber to be detected.
Step S410, OTDR equipment according to the corresponding length information of branch optical fiber to be detected with
And the corresponding wavelength informations of AWG access ports OLT1 predict the test of branch optical fiber to be detected
Duration t.For example, the corresponding length of branch optical fiber to be detected can be optical fiber 9.5km, test
Duration t can be 2s.
Step S411, OTDR equipment sends the test of branch optical fiber to be detected to management system
Duration t.
Step S412, management system determines test initial time T.
Step S413, management system notifies access port OLT1 in testing time section [T, T+2s]
Inside carry out light path detection.
Step S414, access port OLT1 reply confirmation message to management system, and notify
ONU is online in testing time section [T, T+2s] service disconnection, requirement suppression alarm, maintenance user,
And OLT1 emitters are closed within testing time section [T, T+2s].
Step S415, management system notifies that OTDR equipment starts test and in testing time section
Light path detection is carried out in [T, T+2s].
Step S416, OTDR equipment replys confirmation message to management system, and will receive and dispatch ripple
Test wavelength is arrived in regulation long.
Step S417, OTDR equipment carries out light path detection in testing time section [T, T+2s], and
Testing result is fed back into management system.Now OLT device recovers the business datum of ONU
Transmitting-receiving.In testing time section [T, T+2s], management passages of the OLT1 using PON in itself is notified
OUN service disconnections, it is desirable to which ONU suppresses to alert and remain online.When the T moment arrives,
OLT1 closes emitter, and the user for suppressing OLT1 network sides loses alarm；T+2s's
When moment arrives, OLT1 recovers the business datum transmitting-receiving of ONU, and OTDR equipment closes transmitting-receiving
Device.
The business processing flow of the above method is as shown in Figure 5.It is PON systems by management system
The co-ordination of system, can evade user offline, it is to avoid survey while realizing that light path is detected
Ping possible broken string behavior between the OLT on road and ONU.
The multi-wavelength of the realization containing CAWG of one embodiment of the invention is described with reference to Fig. 6
The management system of PON light paths detection.
Fig. 6 shows that the present invention realizes the management system that the multi-wavelength PON light paths containing CAWG are detected
The structural representation of one embodiment of system.As shown in fig. 6, the embodiment containing CAWG
Multi-wavelength PON light paths detection management system 60 include：
Wavelength information acquisition module 602, for determining the corresponding CAWG of branch optical fiber to be detected
Access port, it is corresponding many that the cyclophysis according to CAWG obtains CAWG access ports
Individual periodicity wavelength；
Test wavelength selecting module 604, for the ripple according to optical time domain reflectometer OTDR equipment
Scope of coordinating long selects non-OLTx operation wavelengths as survey from the multiple periodicity wavelength
Examination wavelength；
Information sending module 606, for test wavelength information to be sent into optical time domain reflectometer
OTDR equipment, and notify OTDR equipment in the corresponding surveys of CAWG access ports OLTx
Treating detection branches optical fiber on examination wavelength carries out light path detection.
The multi-wavelength of the realization containing CAWG of one embodiment of the invention is described with reference to Fig. 7
The management system of PON light paths detection.
Fig. 7 shows that the present invention realizes the management system that the multi-wavelength PON light paths containing CAWG are detected
The structural representation of one embodiment of system.As shown in fig. 7, the embodiment containing CAWG
Multi-wavelength PON light paths detection management system 70 in,
Information sending module is additionally operable to be sent to the corresponding length information of branch optical fiber to be detected
OTDR equipment, and notify that OTDR equipment predicts the length of testing speech t of branch optical fiber to be detected.
Management system 70 also includes：
Information receiving module 708, for receiving the length of testing speech t from OTDR equipment；
Initial time determining module 710, for determining test initial time T；
Testing time section notification module 712, for notifying OTDR equipment and AWG tunnel ends
Mouth OLTx carries out light path detection within testing time section [T, T+t].
Additionally, information sending module 606 can be also used for the corresponding length of branch optical fiber to be detected
Degree information is sent to OTDR equipment, and notifies that OTDR equipment predicts branch optical fiber to be detected
Length of testing speech t.
The multi-wavelength of the realization containing CAWG of one embodiment of the invention is described with reference to Fig. 8
The OTDR equipment of PON light paths detection.
Fig. 8 shows that the present invention realizes the OTDR that the multi-wavelength PON light paths containing CAWG are detected
The structural representation of one embodiment of equipment.As shown in fig. 6, the realization of the embodiment contains
The OTDR equipment 80 of the multi-wavelength PON light paths detection of CAWG includes：
Information receiving module 802, for receiving the AWG access ports from management system
The corresponding test wavelength information of OLTx；
Light path detection module 804, for the detection notice sent in response to management system, OTDR
Equipment treats detection branches light in the corresponding test wavelength information of AWG access ports OLTx
Fibre carries out light path detection.
Optionally, multi-wavelength PON light path of the realization containing CAWG in one embodiment is detected
OTDR equipment 80 in,
Information receiving module is additionally operable to receive the branch optical fiber to be detected correspondence from management system
Length information；
OTDR equipment 80 also includes length of testing speech prediction module 808, for according to be detected
The corresponding length information of branch optical fiber and the corresponding test wavelengths of AWG access ports OLTx
Information, predicts the length of testing speech t of branch optical fiber to be detected.
OTDR equipment 80 also includes information sending module 810, for being sent to management system
The length of testing speech t of branch optical fiber to be detected.
Information receiving module 802 is additionally operable to receive testing time section [T, T+t] from management system
Information.
Light path detection module 804 is additionally operable to carry out light path detection in testing time section [T, T+t].
One of ordinary skill in the art will appreciate that realizing that all or part of step of above-described embodiment can
To be completed by hardware, it is also possible to instruct the hardware of correlation to complete by program, described journey
Sequence can be stored in a kind of computer-readable recording medium, and storage medium mentioned above can be
Read-only storage, disk or CD etc..
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all at this
Within the spirit and principle of invention, any modification, equivalent substitution and improvements made etc. all should be wrapped
It is contained within protection scope of the present invention.
Claims (10)
1. a kind of multi-wavelength passive optical network for realizing the CAWG of waveguide optical grating containing circular array
PON light path detection methods, including：
Management system determines the corresponding CAWG access ports of branch optical fiber to be detected, according to
The cyclophysis of CAWG obtains the corresponding multiple periodicity wavelength of CAWG access ports；
Management system coordinates scope from described according to the wavelength of optical time domain reflectometer OTDR equipment
Non- OLTx operation wavelengths are selected in multiple periodicity wavelength as test wavelength；
Test wavelength information is sent to optical time domain reflectometer OTDR equipment by management system, and
Notify OTDR equipment in the corresponding test wavelengths of CAWG access ports OLTx to be checked
Surveying branch optical fiber carries out light path detection.
2. method according to claim 1, it is characterised in that methods described also includes：
The corresponding length information of branch optical fiber to be detected is sent to OTDR equipment by management system,
And notify that OTDR equipment predicts the length of testing speech t of branch optical fiber to be detected；
Management system receives the length of testing speech t from OTDR equipment；
Management system determines test initial time T；
Management system notifies OTDR equipment and AWG access ports OLTx in the testing time
Light path detection is carried out in section [T, T+t].
3. method according to claim 1, it is characterised in that management system is from resource
The corresponding CAWG access ports of branch optical fiber to be detected are searched in the information of system record.
4. a kind of multi-wavelength passive light net PON for realizing the CAWG of waveguide optical grating containing circular array
Network light path detection method, including：
OTDR equipment receives the corresponding surveys of AWG access ports OLTx from management system
Examination wavelength information；
In response to the detection notice that management system sends, OTDR equipment is in AWG access ports
Treating detection branches optical fiber in the corresponding test wavelength information of OLTx carries out light path detection.
5. method according to claim 4, it is characterised in that methods described also includes：
OTDR equipment receives the corresponding length letter of branch optical fiber to be detected from management system
Breath；
OTDR equipment is according to the corresponding length information of branch optical fiber to be detected and AWG passages
The corresponding test wavelength information of port OLTx, predicts the length of testing speech t of branch optical fiber to be detected；
OTDR equipment sends the length of testing speech t of branch optical fiber to be detected to management system；
OTDR equipment receives testing time section [T, the T+t] information from management system；
OTDR equipment carries out light path detection in testing time section [T, T+t].
6. a kind of multi-wavelength passive optical network for realizing the CAWG of waveguide optical grating containing circular array
The management system of PON light paths detection, including：
Wavelength information acquisition module, for determining that the corresponding CAWG of branch optical fiber to be detected leads to
Road port, the cyclophysis according to CAWG obtains the corresponding multiple of CAWG access ports
Periodicity wavelength；
Test wavelength selecting module, for the wavelength according to optical time domain reflectometer OTDR equipment
Coordinate scope and non-OLTx operation wavelengths are selected from the multiple periodicity wavelength as test
Wavelength；
Information sending module, for test wavelength information to be sent into optical time domain reflectometer OTDR
Equipment, and notify OTDR equipment in the corresponding test wavelengths of CAWG access ports OLTx
On treat detection branches optical fiber and carry out light path detection.
7. management system according to claim 6, it is characterised in that
Information sending module is additionally operable to be sent to the corresponding length information of branch optical fiber to be detected
OTDR equipment, and notify that OTDR equipment predicts the length of testing speech t of branch optical fiber to be detected；
The management system also includes：
Information receiving module, for receiving the length of testing speech t from OTDR equipment；
Initial time determining module, for determining test initial time T；
Testing time section notification module, for notifying OTDR equipment and AWG access ports
OLTx carries out light path detection within testing time section [T, T+t].
8. management system according to claim 6, it is characterised in that the wavelength letter
It is corresponding branch optical fiber to be detected to be searched in the information that breath acquisition module is recorded from resource system
CAWG access ports.
9. a kind of multi-wavelength passive optical network for realizing the CAWG of waveguide optical grating containing circular array
The OTDR equipment of PON light paths detection, including：
Information receiving module, for receiving the AWG access ports OLTx from management system
Corresponding test wavelength information；
Light path detection module, for the detection notice sent in response to management system, OTDR sets
It is standby to treat detection branches optical fiber in the corresponding test wavelength information of AWG access ports OLTx
Carry out light path detection.
10. OTDR equipment according to claim 9, it is characterised in that the side
Method also includes：
Information receiving module is additionally operable to receive the branch optical fiber to be detected correspondence from management system
Length information；
OTDR equipment also includes length of testing speech prediction module, for according to branch optical fiber to be detected
Corresponding length information and the corresponding test wavelength information of AWG access ports OLTx, in advance
Survey the length of testing speech t of branch optical fiber to be detected；
OTDR equipment also includes information sending module, for sending to be detected point to management system
The length of testing speech t of branch optical fiber；
Information receiving module is additionally operable to receive testing time section [T, the T+t] letter from management system
Breath；
Light path detection module is additionally operable to carry out light path detection in testing time section [T, T+t].
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| WO2023116125A1 (en) * | 2021-12-20 | 2023-06-29 | 中兴通讯股份有限公司 | Information processing method, network system, and computer-readable storage medium |
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