CN108834005A - A kind of passive optical fiber network system and its control method of power adjustable - Google Patents
A kind of passive optical fiber network system and its control method of power adjustable Download PDFInfo
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- CN108834005A CN108834005A CN201810810824.3A CN201810810824A CN108834005A CN 108834005 A CN108834005 A CN 108834005A CN 201810810824 A CN201810810824 A CN 201810810824A CN 108834005 A CN108834005 A CN 108834005A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
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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
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
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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
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/293—Signal power control
- H04B10/294—Signal power control in a multiwavelength system, e.g. gain equalisation
- H04B10/2942—Signal power control in a multiwavelength system, e.g. gain equalisation using automatic gain control [AGC]
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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
- H04B10/50—Transmitters
- H04B10/564—Power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
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- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
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- Optical Communication System (AREA)
Abstract
The invention discloses a kind of passive optical fiber network system of power adjustable and its control methods, include console for centralized control, optical line terminal unit, optical distribution unit and optical network unit, console for centralized control is provided with network management, the adjustment of alarm triggered pump light source power supply is received, realizes different pumping power output；Optical line terminal unit includes OLT device, the first optical filter, photo-coupler, optoisolator and pump light source；Optical distribution unit includes Er-doped fiber, the second optical filter and optical splitter；Optical network unit includes more ONU terminal devices.The present invention solves the problems, such as the optical power deficiency that user's ONU terminal occurs in use.
Description
Technical field
The present invention relates to a kind of passive optical fiber network system and its control method, especially a kind of passive light of power adjustable
Fine network system and its control method.
Background technique
PON (passive optical network) refers to (in optical distribution) without containing any electronic device and electronic power supply, ODN all by
The passive devices such as optical splitter (Splitter) composition, does not need valuable active electronic devices.One passive optical network includes
One is installed on the optical line terminal (OLT) of console for centralized control, and the matched optical-fiber network list for being installed on customer site of a batch
First (ONUs).Optical distribution (ODN) between OLT and ONU contains optical fiber and passive optical splitters or coupler, typical
Networking structure schematic diagram see Fig. 2.
Optical splitter is also known as optical splitter, is one of passive device important in optical fiber link, be have multiple input terminals and
The optical fiber tandem device of multiple output ends.Optical splitter can be divided into fused tapered and planar waveguide-type (PLC by light splitting principle
Type) two kinds.
The splitting ratio for the optical splitter that existing PON network uses refers to optical power on the circuitry number and each branch of optical splitter
Ratio.In the prior art, optical splitter is the fixed optical splitter of splitting ratio, from 1：2~1：128,2：2~2：128 etc..
Internal structure is by multistage 1：The insensitive coupler cascade of 2 wavelength is realized.For the input optical signal of different wave length, optical splitter
Branch's number and splitting ratio remain unchanged.In now net construction, ODN optical splitter once has selected corresponding optical splitter, then user
The network coverage be fixed up.
In network O&M, there is optical power not in the practical O&M of PON network in the optical splitter of existing fixed splitting ratio
The problem of foot and influence that newly-increased industry can not be being carried out with the use perception of business and part Zhi Guanglu because of power budget deficiency
Business.Increase the scene that scene can not be opened by power budget deficiency for number of users, can newly be superimposed the few light of deployment branch's number
Splitter, but need to consume more valuable trunk incoming fiber optics, the resources such as PON mouthfuls.
For existing PON network because there are optical splitters, such as big branch's number optical splitter either secondary light-splitting scene
Lower influence user optical power is insufficient, or even the case where be unsatisfactory for the expansion of business, different solutions is met the tendency of such as life.Such as from tune
There are light function caused by larger difference for the distance of the lower different user of some PON mouthfuls of list of realization solution in terms of the splitting ratio of whole optical splitter
The scheme of rate difference passes through if the patent of number of patent application 201310140470.3 discloses a kind of optical splitter of power adjustable
The size of electric control module controls voltage come change liquid crystal refractive index realize input optical signal power output port again
Distribution.For another example the patent of number of patent application 201710629624.3 discloses a kind of 2X2 optical splitter, mainly passes through hot modulation
Component realizes that different electricity are adjusted, and realizes that the splitting ratio under different wave length is adjusted.The patent of number of patent application 201220096159.4
The technical solution of a kind of adjustable luminous power divider and its amplifier is disclosed, by the polarised light for being transferred to polarization maintaining optical fibre
The angle of fast and slow axis realizes that optical power fluctuation is arbitrarily adjustable.
Existing technical solution, as set forth above, it is possible to realize dividing again for optical power by adjusting the splitting ratio of optical splitter
With function, improves the link optical power of PON network, meet the needs of part Zhi Guanglu.But it has the following disadvantages：
1, the technical solution that above-mentioned side is related to is required to the variation that modes such as active (applied voltages) remove realization splitting ratio, portion
Offshoot program also relates to the PON network such as number of patent application 201710629624.3 for needing multi-wavelength, is unsatisfactory for existing net passive light
The application scenarios of network, such as optical splitter in optical cross box are passive device and do not have power supply and introduce condition.
2, for the PON network in the case where input optical power is definite value, the splitting ratio for adjusting optical splitter is to sacrifice part
The optical power of branch's optical path meets another part branch optical path, that is, the branch's optical path for having existed for solving underpower can
The optical power deficiency of other branch optical path can be led to the problem of.
3, element branches optical path is unable to satisfy the power budget of the link because of redistributing for optical power, leads to not
Again new business is opened again, while element branches optical path redistributes adjustment easily by later period trunk or branch's light because of optical power
The loss increasing of cable and traffic affecting normal use.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of passive optical fiber network system of power adjustable and its controls
Method solves the problems, such as the optical power deficiency that user's ONU terminal occurs in use.
In order to solve the above technical problems, the technical scheme adopted by the invention is that：
A kind of passive optical fiber network system of power adjustable, it is characterised in that：Include console for centralized control, optical line terminal list
Member, optical distribution unit and optical network unit,
Console for centralized control is provided with network management, receives the adjustment of alarm triggered pump light source power supply, realizes different pumping function
Rate output；
Optical line terminal unit includes OLT device, the first optical filter, photo-coupler, optoisolator and pump light source,
One end of OLT device and pump light source is connect with the network management of console for centralized control respectively, and the other end of OLT device and the first light filter
The connection of device one end, the first optical filter other end are connect with photo-coupler one end, the photo-coupler other end and optoisolator one end
Connection, the optoisolator other end are connect with the pump light source other end；
Optical distribution unit includes Er-doped fiber, the second optical filter and optical splitter, and Er-doped fiber one end passes through trunk light
The connection of the third end of cable and photo-coupler, one end of the second optical filter and the other end of Er-doped fiber connect, the filtering of the second light
The other end of device is connect with optical splitter one end；
Optical network unit includes more ONU terminal devices, and every ONU terminal device is another by optical distribution cable and optical splitter
One branch connection at end.
Further, the network management be used for show passive optical-fiber network equipment and optical cable warning information, to equipment into
Row alarm inquiry, data configuration and change operation.
Further, the OLT device is for each traffic assignments convergence for netting whole unit, used downstream wavelength
1550nm, upstream wavelength 1310nm.
Further, the pump light source uses the wavelength of 980nm, and the first optical filter and the second optical filter are band resistance
Filter prevents the light of 980nm wavelength from passing through.
Further, the Er-doped fiber carries out light amplification to 1550nm wavelength by pump light source,
The gain of Er-doped fiber
GA is gain, g in formulaRFor gain coefficient, PPFor pumping light power, AeffFor fiber core effective area, LeffEffectively
Fiber lengths,
L is the length of optical fiber, apIt is optical fiber to the attenuation coefficient of pump light；
The optical power of gain and pumping is directly proportional as shown from the above formula, pumps by adjusting the current control of pump light source
Optical power realizes the power adjustable function of PON network from the gain for realizing control signal light.
Further, the ONU terminal device is for providing a user multiple business interfaces.
A kind of control method of the passive optical fiber network system of power adjustable, it is characterised in that comprise the steps of：
Step 1：The optical path for completing the passive optical fiber network system of power adjustable described in any one of claims 1-6 is taken
It builds and is built with network management link；
Step 2：The passive optical fiber network system of power adjustable is powered on and is worked normally；
Step 3：Business is in service stage or the stage of opening, when there is the dim light of passive optical-fiber network, passive fiber
The equipment of network detects the deficiency of optical power and reports network management alarm；
Step 4：Network management triggering adjusts the order of electric current to pump light source, and pump light source is carried out according to the order received
The adjusting of current value, to export the pump light of 980nm wavelength；
Step 5：Pump light is coupled into after optoisolator in the main signal light that coupler is issued with OLT device
Enter backbone optical cable, is transmitted at Er-doped fiber and light amplification is carried out to main signal optical power；
Step 6：At optical filter, pump light is filtered the main signal light and pump light being amplified, the master being amplified
Signal light enters optical splitter, has carried out the promotion of optical power to the optical path of each branch.
Further, the step 2 is specially and powers on to the related equipment of passive optical-fiber network, passes through net
Pipe completes the open-minded of PON network business, and the main signal light that OLT device issues passes through the first optical filter, photo-coupler, trunk
Optical cable, Er-doped fiber, the second optical filter, optical splitter are ultimately delivered to the ONU terminal device of optical network unit, complete PON net
The downlink signal of network transmits.
Further, it alerts in the step 3 and is shown by network management, display mode is figure or acoustic-optic indicator.
Further, in the step 6, the Output optical power of pump light will persistently adjust increase, realize that final ONU is whole
After 2dB of the receipts light of end equipment more than its threshold value, 2dB of the receipts light of ONU terminal device more than its threshold value, network management root
According to the optical power parameter received, stopped adjusting pump light source again, the stationary value of pump light source is kept to export.
Compared with prior art, the present invention having the following advantages that and effect：
1, light all goes to realize and be divided with unit using the mode that passive optical device does not need active (applied voltage)
The Output optical power of device changes, and realizes adjustable function to the optical power of PON network.
2, the optical power adjustment of each branch's optical path of entire optical splitter may be implemented in the optical power adjustment of PON network, avoids
The optical power of element branches optical path is solved to sacrifice the power of other branch's optical paths.
3, optical splitter carries out the adjustable gain of optical power in trunk portion, can open quantity not influencing original subscriber
In the case of, the range of covering radius is increased, is used with meeting the covering of business.
4, the PON network is easy to upgrading on the basis of former PON network, reduces the difficulty of weight on-premise network.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of the passive optical fiber network system of power adjustable of the invention.
Fig. 2 is the schematic diagram of prior art fiber optic network.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
As shown in Figure 1, a kind of passive optical fiber network system of power adjustable of the invention, includes console for centralized control 1, light
Road terminal unit 2, optical distribution unit 3 and optical network unit 4,
Console for centralized control 1 is provided with network management 5, receives the adjustment of alarm triggered pump light source power supply, realizes different pumping
Power output；Network management is used to show the equipment of passive optical-fiber network and the warning information of optical cable, carries out alarm inquiry, number to equipment
According to configuration and change operation.
Optical line terminal unit 2 includes OLT device 6, the first optical filter 7, photo-coupler 8, optoisolator 9 and pump light
One end of source 10, OLT device 6 and pump light source 10 is connect with the network management 5 of console for centralized control 1 respectively, the other end of OLT device 6
It is connect with 7 one end of the first optical filter, 7 other end of the first optical filter is connect with 8 one end of photo-coupler, and photo-coupler 8 is another
End is connect with 9 one end of optoisolator, and 9 other end of optoisolator is connect with 10 other end of pump light source；
Optical distribution unit 3 includes Er-doped fiber 11, the second optical filter 12 and optical splitter 13, and 11 one end of Er-doped fiber is logical
It crosses backbone optical cable 14 to connect with the third end of photo-coupler 8, one end of the second optical filter 12 and the other end of Er-doped fiber 11
Connection, the other end of the second optical filter 12 are connect with 13 one end of optical splitter；
Optical network unit 4 includes more ONU terminal devices 15, and every ONU terminal device 15 is by optical distribution cable 16 and divides
One branch of 13 other end of light device connects.
OLT device is the key equipment of PON network, for each traffic assignments convergence for netting whole unit, implementation of the invention
In example, used downstream wavelength is 1550nm, upstream wavelength 1310nm.
Pump light source can have external and built-in OLT formula, and the present embodiment uses external form.Its pumping wavelength can have
980nm and 1480nm, the present embodiment use the wavelength of 980nm.It pumps the square directly proportional of Output optical power and electric current.First
Optical filter and the second optical filter are bandstop filter, and bandstop filter is to prevent passing through for 980nm wavelength.Light is one every device
A one direction passes through device, it is therefore an objective to reflection wavelength be isolated and carry out pump light source.Photo-coupler is the master for issuing OLT
The pump light for the 980nm that signal light and pump light source issue carries out the fibre core for being coupled into backbone optical cable.
Er-doped fiber is the optical fiber for adulterating erbium ion, can cross pump light (pump light of 980nm or 1480nm wavelength)
Light amplification is carried out to 1550nm operation wavelength.The length of Er-doped fiber can be tens meters etc., and Er-doped fiber is long in the present embodiment
Degree is 30nm.Additionally as the optical fiber of amplification, this section of optical fiber can replace with the optical fiber of other doping on demand, such as mix praseodymium etc.
Optical fiber, it is therefore an objective to which light amplification is carried out to different operation wavelengths.
The gain of Er-doped fiber
GA is gain (amplification factor), g in formulaRFor gain coefficient, PPFor pumping light power, AeffFor fiber core significant surface
Product, LeffEffective fiber length,
L is the length of optical fiber, apIt is optical fiber to the attenuation coefficient of pump light；
The optical power of gain and pumping is directly proportional as shown from the above formula, pumps by adjusting the current control of pump light source
Optical power realizes the power adjustable function of PON network from the gain for realizing control signal light.The yield value of Er-doped fiber can be protected
Card meets the power adjustable range of PON network in 20dB or more.
Optical splitter can be from 1：2~1：128,2：2~2：128 etc., major function is by the light function of main signal light
Rate point is assigned to each branch.
ONU terminal device is the terminal device of intelligent acess, it provides a user multiple business interfaces.Its network side
It is optical interface and user side is electrical interface, therefore optical network unit (ONU) needs to have optical electrical conversion and electrical/optical conversion
Function, while also having the function of to the D/A and analog/digital conversion of voice signal and multiplexing, signaling processing and maintenance management
Function.Cooperate with OLT, ONU can provide various broadband services to connected user.Such as Internet surfing, VoIP,
HDTV.Distribution fibers, backbone optical cable are related to various types and include G.652 type fiber, G.655 type fiber, 48 core optical cables, 96
Core optical cable, 128 core optical cables etc..
A kind of control method of the passive optical fiber network system of power adjustable, comprises the steps of：
Step 1：The optical path for completing the passive optical fiber network system of power adjustable is built builds with network management link；
Step 2：The passive optical fiber network system of power adjustable is powered on and is worked normally；To involved by passive optical-fiber network
And equipment powered on, the open-minded of PON network business is completed by network management, the main signal light that OLT device issues passes through the
One optical filter, photo-coupler, backbone optical cable, Er-doped fiber, the second optical filter, optical splitter are ultimately delivered to optical network unit
ONU terminal device, complete PON network downlink signal transmission.
Step 3：Business is in service stage or the stage of opening, when there is the dim light of passive optical-fiber network, passive fiber
The equipment of network detects the deficiency of optical power and reports network management alarm；Alarm shows that display mode is figure by network management
Shape or acoustic-optic indicator.
Step 4：Network management triggering adjusts the order of electric current to pump light source, and pump light source is carried out according to the order received
The adjusting of current value, to export the pump light of 980nm wavelength；
Step 5：Pump light is coupled into after optoisolator in the main signal light that coupler is issued with OLT device
Enter backbone optical cable, is transmitted at Er-doped fiber and light amplification is carried out to main signal optical power；
Step 6：At optical filter, pump light is filtered the main signal light and pump light being amplified, the master being amplified
Signal light enters optical splitter, has carried out the promotion of optical power to the optical path of each branch.
The Output optical power of pump light will persistently adjust increase, realize the receipts light of final ONU terminal device in its threshold value
After 2dB of the receipts light of above 2dB, ONU terminal device more than its threshold value, network management according to the optical power parameter received,
Stopped adjusting pump light source again, the stationary value of pump light source is kept to export.
The operation principle of the present invention is that：In system building, the optical path passed through and ethernet line are attached, wherein net
Pipe and the connection of OLT device and pump light source equipment are cable, remaining is optical fiber link.System physical link builds completion
Afterwards, it is carried out each under the configuration with ONU business, normal situation by network management, the main signal light that OLT is issued, by filtering
Device, then through coupler enter after the fibre core of backbone optical cable again to the Er-doped fiber of block, using optical filter after
Optical splitter is entered, optical splitter, to the fibre core of each branched cable, is eventually arrived at according to the equal beam splitting capabilities of used splitting ratio
The user terminal of ONU, in the case where ONU receives light normal situation, business be can be used normally.When the receipts light for ONU occur is in weak receipts light
When, OLT device detects that ONU is in the thresholding for receiving light, triggering dim light alarm to network management, touching while network management receives dim light alarm
The electric current adjustment for sending out pump light, to realize the output of pump light.Optical signal and pump light of the OLT device with business information at this time
Entered the fibre core to backbone optical cable after coupling in photo-coupler, and then be transmitted to the Er-doped fiber of optical wiring unit, is passed through
After Er-doped fiber, the optical signal with business has obtained light amplification, and residual pump light will filter out in optical filter.Amplification
Signal light afterwards proceeds to optical splitter after optical filter, the distribution of optical power is carried out to the fibre core of each branch, after distribution
Optical power it is more original optical power it is strong, the receipts light for finally realizing ONU terminal may be adjusted to range of normal value, realize ONU
The normal table of business uses.
Above content is only illustrations made for the present invention described in this specification.Technology belonging to the present invention
The technical staff in field can do various modifications or supplement or is substituted in a similar manner to described specific embodiment, only
It should belong to guarantor of the invention without departing from the content or beyond the scope defined by this claim of description of the invention
Protect range.
Claims (10)
1. a kind of passive optical fiber network system of power adjustable, it is characterised in that：Include console for centralized control, optical line terminal list
Member, optical distribution unit and optical network unit,
Console for centralized control is provided with network management, receives the adjustment of alarm triggered pump light source power supply, realizes that different pumping power is defeated
Out；
Optical line terminal unit includes that OLT device, the first optical filter, photo-coupler, optoisolator and pump light source, OLT are set
Standby and pump light source one end is connect with the network management of console for centralized control respectively, the other end of OLT device and the first optical filter one
End connection, the first optical filter other end are connect with photo-coupler one end, and the photo-coupler other end is connect with optoisolator one end,
The optoisolator other end is connect with the pump light source other end；
Optical distribution unit include Er-doped fiber, the second optical filter and optical splitter, Er-doped fiber one end by backbone optical cable with
The third end of photo-coupler connects, and one end of the second optical filter and the other end of Er-doped fiber connect, the second optical filter
The other end is connect with optical splitter one end；
Optical network unit includes more ONU terminal devices, and every ONU terminal device passes through optical distribution cable and the optical splitter other end
One branch connection.
2. a kind of passive optical fiber network system of power adjustable described in accordance with the claim 1, it is characterised in that：The network management is used
In the equipment of display passive optical-fiber network and the warning information of optical cable, alarm inquiry, data configuration and change are carried out to equipment and grasped
Make.
3. a kind of passive optical fiber network system of power adjustable described in accordance with the claim 1, it is characterised in that：The OLT is set
It is ready for use on each traffic assignments convergence for netting whole unit, used downstream wavelength is 1550nm, upstream wavelength 1310nm.
4. a kind of passive optical fiber network system of power adjustable described in accordance with the claim 1, it is characterised in that：The pump light
Source uses the wavelength of 980nm, and the first optical filter and the second optical filter are bandstop filter, prevents the light of 980nm wavelength logical
It crosses.
5. a kind of passive optical fiber network system of power adjustable described in accordance with the claim 1, it is characterised in that：The er-doped light
Fibre carries out light amplification to 1550nm wavelength by pump light source,
The gain of Er-doped fiber
GA is gain, g in formulaRFor gain coefficient, PPFor pumping light power, AeffFor fiber core effective area, LeffEffective fiber
Length,
L is the length of optical fiber, apIt is optical fiber to the attenuation coefficient of pump light；
The optical power of gain and pumping is directly proportional as shown from the above formula, by adjusting the current control pump light function of pump light source
Rate realizes the power adjustable function of PON network from the gain for realizing control signal light.
6. a kind of passive optical fiber network system of power adjustable described in accordance with the claim 1, it is characterised in that：The ONU is whole
End equipment is for providing a user multiple business interfaces.
7. a kind of control method of the passive optical fiber network system of power adjustable, it is characterised in that comprise the steps of：
Step 1：Complete the passive optical fiber network system of power adjustable described in any one of claims 1-6 optical path build and
Network management link is built；
Step 2：The passive optical fiber network system of power adjustable is powered on and is worked normally；
Step 3：Business is in service stage or the stage of opening, when there is the dim light of passive optical-fiber network, passive optical-fiber network
Equipment detect the deficiency of optical power and report network management alarm；
Step 4：Network management triggering adjusts the order of electric current to pump light source, and pump light source carries out electric current according to the order received
The adjusting of value, to export the pump light of 980nm wavelength；
Step 5：Pump light be coupled into becoming owner of after optoisolator in the main signal light that coupler is issued with OLT device
Dry optical cable is transmitted at Er-doped fiber and carries out light amplification to main signal optical power；
Step 6：At optical filter, pump light is filtered the main signal light and pump light being amplified, the main signal being amplified
Light enters optical splitter, has carried out the promotion of optical power to the optical path of each branch.
8. the passive optical-fiber network control method of a kind of power adjustable according to claim 7, it is characterised in that：The step
Rapid two be specially to power on to the related equipment of passive optical-fiber network, completes the open-minded of PON network business by network management,
The main signal light that OLT device issues passes through the first optical filter, photo-coupler, backbone optical cable, Er-doped fiber, the filtering of the second light
Device, optical splitter are ultimately delivered to the ONU terminal device of optical network unit, complete the downlink signal transmission of PON network.
9. the passive optical-fiber network control method of a kind of power adjustable according to claim 7, it is characterised in that：The step
Alarm is shown by network management in rapid three, and display mode is figure or acoustic-optic indicator.
10. the passive optical-fiber network control method of a kind of power adjustable according to claim 7, it is characterised in that：It is described
In step 6, the Output optical power of pump light will persistently adjust increase, realize the receipts light of final ONU terminal device in its threshold value
After 2dB of the receipts light of above 2dB, ONU terminal device more than its threshold value, network management according to the optical power parameter received,
Stopped adjusting pump light source again, the stationary value of pump light source is kept to export.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109769156A (en) * | 2019-03-28 | 2019-05-17 | 瑞斯康达科技发展股份有限公司 | A kind of the Visual Implementation method and device of GPON business model |
| CN112653939A (en) * | 2020-11-27 | 2021-04-13 | 华为技术有限公司 | Optical distribution network, optical network system, optical splitter and port identification method of optical splitter |
| CN113873357A (en) * | 2020-06-30 | 2021-12-31 | 华为技术有限公司 | Optical splitter, ODN, method for identifying optical link where ONU is located, OLT, ONU and PON system |
| CN114173226A (en) * | 2021-11-09 | 2022-03-11 | 武汉邮电科学研究院有限公司 | Novel passive optical network system based on distributed Raman optical amplifier |
| CN117579964A (en) * | 2024-01-17 | 2024-02-20 | 中兴通讯股份有限公司 | Optical distribution network, optical distribution system and optical power disturbance method |
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| CN114173226B (en) * | 2021-11-09 | 2023-12-22 | 武汉邮电科学研究院有限公司 | Novel passive optical network system based on distributed Raman optical amplifier |
| CN117579964A (en) * | 2024-01-17 | 2024-02-20 | 中兴通讯股份有限公司 | Optical distribution network, optical distribution system and optical power disturbance method |
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