CN104426739B - A kind of method, remote node and the optical line terminal of fusion Metropolitan Area Network (MAN) and access net - Google Patents
A kind of method, remote node and the optical line terminal of fusion Metropolitan Area Network (MAN) and access net Download PDFInfo
- Publication number
- CN104426739B CN104426739B CN201310408149.9A CN201310408149A CN104426739B CN 104426739 B CN104426739 B CN 104426739B CN 201310408149 A CN201310408149 A CN 201310408149A CN 104426739 B CN104426739 B CN 104426739B
- Authority
- CN
- China
- Prior art keywords
- wavelength
- signal
- dedicated
- common
- man
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0201—Add-and-drop multiplexing
- H04J14/0215—Architecture aspects
- H04J14/0219—Modular or upgradable architectures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
- H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
- H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
- Semiconductor Lasers (AREA)
Abstract
The invention particularly discloses a kind of methods of fusion Metropolitan Area Network (MAN) and access net, remote node and optical line terminal, wherein, the downstream transmission signals solution wavelength-division received from the Metropolitan Area Network (MAN) is multiplexed at least one common wavelength, the wavelength dedicated downlink signal and other wavelength signals of one correspondence remote node, downlink data on the wavelength dedicated downlink signal is transformed into common wavelength to obtain common wavelength signal, the common wavelength signal is sent to access net, the downlink data on the wavelength dedicated downlink signal is removed to obtain wavelength dedicated, being transformed into wavelength dedicated from the upstream data on the upstream signals that receive of access net to obtain wavelength dedicated up-delivering signal, the wavelength dedicated up-delivering signal is uploaded to Metropolitan Area Network (MAN).
Description
Technical field
The present invention relates to fields of communication technology, more particularly, to a kind of method of fusion Metropolitan Area Network (MAN) and access net, remotely
Node and optical line terminal.
Background technology
Metropolitan Area Network (MAN) (Metro Network) and access net (Access Network) are typically completely different two class nets
Network, their difference include technology, agreement and transmission medium etc..Safeguard that this two classes network is complicated and expensive simultaneously
's.And data must carry out on interconnecting nodes at the conversion of photoelectricity light and electricity from a kind of network to another kind of network transmission
Reason.Passive optical network (Passive Optical Network in being netted with access：PON development), optical fiber become Metropolitan Area Network (MAN) and
Common transmission medium in access net.This to merge this two classes network using similar technique, and it is possible thereby to obtains
Scale effect is obtained, and reduces maintenance cost.
A kind of mode having much foreground is by expandable passive optical network (PON) to Metropolitan Area Network (MAN) range, to realize that metropolitan area connects
Enter to merge optical-fiber network.Originally discrete multiple access networks, which are converged to by remote node in Metropolitan Area Network (MAN) ring, constitutes unified net
Network.Multiple optical line terminals (OLTs) in traditional passive optical-fiber network are merged into an optical line terminal, to greatly save
The construction cost and maintenance cost of operator.Remote node (RN) is used for from metropolitan area looped network (Metro Ring) to fusion
The wavelength of carrying uplink and downlink data is uploaded and downloaded in access network to (Wavelength Pair), and is compensated because over long distances
The signal power of transmission and decaying.The considerations of for cost and upgradability, in metropolitan area, mesh portions use wavelength-division multiplex
(Wavelength Division Multiplexing：WDM) technology is to substitute the synchronous digital system that existing Metropolitan Area Network (MAN) uses
(Synchronous Digital Hierarchy：SDH) technology.Due to giving each user within the following significant period of time
All distributing a wavelength dedicated still can be costly, therefore in access mesh portions still using the time division multiplexing skill of existing access net
Art.So in conjunction with the wavelength-division multiplex ring (WDM-ring) of Metropolitan Area Network (MAN) and merging for time division multiplexing tree (TDM-tree) of access net
Network structure is considered as realizing one of the most promising structure of metropolitan area access fusion optical-fiber network, it uses ripe and of low cost
Optical device, and can support at present and future bandwidth demand.
International Organization for standardization ITU-T Q2/SG15 are just being dedicated to the research of the above subject at present, to " for towards connecing
Enter/general characteristic of the novel long range of metropolitan area integrated application access network draft a new standard recommendation ".Multinomial research
Project, such as the OLI started in 2010, also based on the background.
Although a large amount of research has been carried out, a more optimal metropolitan area-access (Metro- how is designed
Access) fusion optical-fiber network is still a problem to be resolved especially as the remote node of critical component.Network
Design is final to be wished to realize following target：
● optical-fiber network is merged in inexpensive metropolitan area-access
● to bit rate and protocol transparent
● it is unified to all user's technical specifications
● the upgrade requirement of more users and bigger bandwidth can be met
● it is preferably able to mutually compatible with the various passive optical network disposed
Up to now, the solution of above-mentioned requirements can not be fully achieved still.As shown in attached drawing 1, Nokia west gate
Sub-network (NSN) proposes the metropolitan area access fusion optical-fiber network scheme of an only compatible Gigabit Passive Optical Network (GPON).Logical
Normal time division multiplexing passive optical network, such as in Gigabit Passive Optical Network, optical network unit (ONUS) and optical line terminal
(OLT) business (traffic) between is the time-division.The carrying wavelength of uplink and downlink business is by standard criterion, i.e.,：Downlink uses
1490nm wavelength, uplink use 1310nm wavelength.However in metropolitan area-access fusion optical-fiber network, when multiple time-multiplexed nothings
When source optical-fiber network is linked into the same metropolitan area looped network, while wavelength is carried using same uplink and downlink, it will be in metro ring
Traffic congestion is caused in net.Therefore, it when there is N number of access net to be linked into the same metropolitan area looped network, is just needed in metropolitan area looped network
N number of different wavelength is used to carry the uplink and downlink business of each access net respectively to (2N wavelength).Each is remotely saved
Point (RN) uses a wavelength dedicated pair, and uploading or downloading for data is carried out between Metropolitan Area Network (MAN) and corresponding access net.
As shown in attached drawing one, in order to compatibility standard Gigabit Passive Optical Network and keep all optical network unit " nothings
Color ", the wavelength dedicated in Metropolitan Area Network (MAN) need the data carried on (Wavelength Pair) in each local access network
It is to be converted to be carried on wavelength to downlink 1490nm and uplink 1310nm.Downstream wavelength is used in the remote node of special designing
Converter (DWC) and upstream wavelength converter (UWC) realize above-mentioned wavelength convert.When the downlink data carrying in metropolitan area looped network
When wavelength is located in downlink reception wave band (1480nm-1500nm) range of access part gigabit Ethernet, it can not use down
Row wavelength shifter.
However said program has many deficiencies：It first, can be by following two in order to meet " downlink reception wave band " requirement
Limitation, is on the one hand limited in the downlink bearing wavelength of WDM ring network on specific wave band, is unfavorable for carrying out flexible net
Network is planned；On the other hand, it is to ensure that each downstream passband centre wavelength has sufficient distance, is connectable to that metro ring is online to be connect
The quantity for entering network is restricted (quantity that connection quantity is equal to metro ring medium wavelength pair).Secondly, if not considering " downlink reception
Wave band " requirement, then must use downstream wavelength converter (DWC).Since wavelength shifter is to be based on semiconductor optical amplifier
(SOA) what cross-gain modulation (XGM) effect was realized, so each remote node is required for additionally disposing a transmitting
The laser of continuous light, launch wavelength are consistent with the expectation wavelength of data is carried after wavelength convert.This means that each
Be required for the continuous light laser of a 1490nm wavelength in a remote node, however this and it is uneconomical.Third, said program
Upgrading to network is opaque, when existing simultaneously Gigabit Passive Optical Network and 10,000,000,000 passive in the same fusion optical-fiber network
When optical-fiber network, since the two follows different standards of wavelength (for example, Gigabit Passive Optical Network downstream wavelength is 1490nm, Wan Zhao
Passive optical network downstream wavelength is 1577nm), Gigabit Passive Optical Network remote node and 10,000,000,000 passive optical network remote nodes are just
It needs to dispose the continuous light laser with different output wavelengths respectively.4th, said program another disadvantage is that in metropolitan area
Too many frequency spectrum resource, the double quantity in actual access net of usage quantity of wavelength, when number of users swashs are occupied in net
Bottleneck can be encountered when increasing.Therefore existing on-premise network, extendible capacity can be compatible with by designing one for metropolitan area access fusion optical-fiber network
, colourless, the remote node with high spectrum utilization, it appears particularly urgent.
Invention content
Optical-fiber network, pass especially therein are merged in order to design more optimal metropolitan area-access (Metro-Access)
Key member：Colourless remote node so that above-mentioned the problems of the prior art are addressed, therefore a side according to the present invention
Face, it is proposed that a method of it merging Metropolitan Area Network (MAN) on remote node and access is netted, including following steps：A. from described
The downstream transmission signals solution wavelength-division that Metropolitan Area Network (MAN) receives is multiplexed at least one common wavelength, correspondence remote node
Wavelength dedicated downlink signal and other wavelength signals, the common wavelength by photo-coupler power distribution be transparent transmission part and
Download part；B. the downlink data on the wavelength dedicated downlink signal be transformed into the download part of the common wavelength with
Obtain common wavelength signal and wavelength dedicated downstream attenuation signal；C. the downlink in the wavelength dedicated downstream attenuation signal is removed
Data, to obtain wavelength dedicated；D. the common wavelength signal is sent to access net；E. receive what the access net was sent
Upstream signals；F. the upstream data on the upstream signals is transformed into the wavelength dedicated, it is special to obtain
Wavelength up-delivering signal；And G. by wavelength-division multiplex the wavelength dedicated up-delivering signal, the transparent transmission part of the common wavelength
It is uploaded to the Metropolitan Area Network (MAN) with other described wavelength signals.
Particularly, in stepb, the wavelength dedicated downlink signal is the first pump light, the download of the common wavelength
Part is the first detection light, by the cross-gain modulation of the first semiconductor optical amplifier, the wavelength dedicated downlink
Downlink data on signal is transformed into the download part of the common wavelength.It can be effectively a wavelength by this method
On signal be transformed on another wavelength.
Particularly, in step F, for the upstream signals as the second pump light, the wavelength dedicated is the second spy
Light is surveyed, by the cross-gain modulation of the second semiconductor optical amplifier, the upstream data on the upstream signals
It is transformed into the wavelength dedicated.
Particularly, in stepb：First pump light and described first detects light from first semiconductor optical amplification
The first end and second end of the active layer of device is injected simultaneously；In step F：Second pump light and it is described second detection light from
The first end and second end of the active layer of second semiconductor optical amplifier is injected simultaneously.By this method can without using
In the case of bandpass filter, only lean on circulator that effectively transformed pump light and detection light can be separated.
Particularly, in step C：It is reduced under the wavelength dedicated by the gain saturatiuon characteristic of third semiconductor amplifier
The optical signal to noise ratio of row deamplification, to remove the downlink data on the wavelength dedicated downstream attenuation signal.By the method without
It needs laser emitter to be obtained with wavelength dedicated, saves cost and resource.
Disclose according to another aspect of the present invention it is a kind of on optical line terminal auxiliary fusion Metropolitan Area Network (MAN) and access net
Method includes the following steps：Set at least one common wavelength；Wavelength dedicated downlink signal is generated, under each wavelength dedicated
Row signal corresponds to a remote node；The wavelength dedicated downlink signal and at least one common wavelength wavelength-division multiplex at downlink
Signal is transmitted, and is transmitted in the Metropolitan Area Network (MAN).
A kind of remote node for merging Metropolitan Area Network (MAN) and access net, feature are disclosed according to another aspect of the present invention
It is, including：MAN Solution Wavelength division multiplexing module is used for the downstream transmission signals demultiplex received from the Metropolitan Area Network (MAN)
At least one common wavelength, the wavelength dedicated downlink signal of corresponding current remote node and other wavelength point are multiplexed into believe
Number, the common wavelength is transparent transmission part and download part by photo-coupler power distribution；Downstream wavelength converter receives
The download part of the common wavelength and the wavelength dedicated downlink signal, the lower line number on the wavelength dedicated downlink signal
Common wavelength signal and wavelength dedicated downstream attenuation signal are obtained according to being transformed into the download part of the common wavelength；Downlink
Modulation removal module, receives the wavelength dedicated downstream attenuation signal, and in the wavelength dedicated downstream attenuation signal
Downlink data removes, to obtain wavelength dedicated；Net Wavelength division multiplexing module is accessed, downlink input terminal receives the common wavelength letter
Number, uplink input end nets from access and receives upstream signals, believes the common wavelength signal and the uplink
Number wavelength-division multiplex is carried out, and common wavelength signal is sent to by access net by its downlink output end, while row output on it
End sends the upstream signals；Upstream wavelength converter receives the wavelength dedicated and the upstream signals,
Upstream data on the upstream signals is transformed into the wavelength dedicated to obtain wavelength dedicated up-delivering signal；Metropolitan area
Net Wavelength division multiplexing module receives the transparent transmission part of the wavelength dedicated up-delivering signal and the common wavelength and other described waves
Long signal, transparent transmission part and other described wavelength signals to the wavelength dedicated up-delivering signal, the common wavelength carry out
Wavelength-division multiplex is simultaneously uploaded to the Metropolitan Area Network (MAN).
Particularly, the downstream wavelength converter is made of the first semiconductor optical amplifier for being operated in saturation region, described
Wavelength dedicated downlink signal is the first pump light, and the download part of the common wavelength is the first detection light, passes through described first
The cross-gain modulation of semiconductor optical amplifier is transformed into the downlink data on the wavelength dedicated downlink signal described
In the download part of common wavelength.
Particularly, the upstream wavelength converter is made of the second semiconductor optical amplifier for being operated in saturation region, described
For upstream signals as the second pump light, the wavelength dedicated is the second detection light, passes through second semiconductor optical amplification
The cross-gain modulation of device is transformed into the upstream data on the upstream signals in the wavelength dedicated.
Particularly, first pump light and the first detection active layer of the light from first semiconductor optical amplifier
First end and second end inject simultaneously；Second pump light and described second detects light from second semiconductor optical amplification
The first end and second end of the active layer of device is injected simultaneously.
Particularly, which is characterized in that further include：The Corticofugal Modulation of Somatosensory removal module is partly led by the third for being operated in saturation region
Body image intensifer is constituted, and the wavelength dedicated downstream attenuation is reduced by the gain saturatiuon characteristic of the third semiconductor amplifier
The optical signal to noise ratio of signal, to remove the downlink data on wavelength dedicated downstream attenuation signal.
Particularly, further include：Photo-coupler, MAN Solution Wavelength division multiplexing module acquisition by least all the way
The common wavelength of transmission couples and power distribution is at the download part by the common wavelength transmitted all the way, Yi Jitong
Cross the transparent transmission part for the common wavelength transmitted all the way.
Particularly, further include：
First annular device is connected with the first end of the active layer of first semiconductor optical amplifier, isolates described
Common wavelength signal；Second circulator is connected with the second end of the active layer of first semiconductor optical amplifier, isolates
The wavelength dedicated downstream attenuation signal；Third circulator, first with the active layer of second semiconductor optical amplifier
End is connected, and isolates the wavelength dedicated up-delivering signal.
Particularly, further include：First image intensifer is connected with the input terminal of the MAN Solution Wavelength division multiplexing module
It connects, the downstream transmission signals are inputted after the amplification of the first image intensifer in the MAN Solution Wavelength division multiplexing module；The
Two image intensifers are connected with the access net Wavelength division multiplexing module, are transmitted in the second image intensifer amplification access net
Signal.Amplify the power that downstream transmission signals are conducive to improve pump light by the first amplifier, to more effectively carry out
Data conversion in downstream wavelength converter
The optical line terminal of disclosed according to another aspect of the present invention a kind of auxiliary fusion Metropolitan Area Network (MAN) and access net, it is special
Sign is, including：Common wavelength laser emitting module is used to emit at least one common wavelength；Wavelength dedicated downlink signal
The wavelength dedicated downlink signal of transmitting module, each transmitting corresponds to a remote node；Wavelength division multiplexing module, with the public affairs
Altogether wavelength laser transmitting module be connected with wavelength dedicated downlink signal transmitting module, and the wavelength dedicated downlink signal with
At least one common wavelength wavelength-division multiplex is transmitted at downstream transmission signals in Metropolitan Area Network.
The present invention is combined Metropolitan Area Network (MAN) with the access net of multiple types by the remote node of " colourless " to realize unification
Metropolitan area access fusion optical-fiber network while, ensure that the compatibility with existing network, improve frequency spectrum resource utilization rate and
The flexibility of wavelength planning, resource overhead and cost are saved, the dilatation and upgrading of network are conducive to.
Description of the drawings
By the way that hereafter the embodiment in conjunction with shown by attached drawing is described in detail, above-mentioned and other features of the invention
It will be apparent from, same or analogous label indicates same or similar step in attached drawing of the present invention；
The scheme of the Metropolitan Area Network (MAN) fusion GPON of Nokia Siemens Networks (NSN) exploitation is shown in Fig. 1；
A network structure for implementing the method for the present invention fusion Metropolitan Area Network (MAN) and access net is shown in Fig. 2；
A method flow diagram that Metropolitan Area Network (MAN) and access net are merged on remote node is shown in Fig. 3
The structure diagram of a remote node for merging Metropolitan Area Network (MAN) and access net is shown in Fig. 4 (a)；In Fig. 4 (b)
Show the structure diagram of the optical line terminal of an auxiliary fusion Metropolitan Area Network (MAN) and access net；
The detailed construction and operation principle of downstream wavelength conversion module (DWC) are shown in Fig. 5 (a), are shown in Fig. 5 (b)
The analog result of downstream wavelength conversion module input/output signal；
The characteristic curve of the input and output of Corticofugal Modulation of Somatosensory removal module is shown in Fig. 6 (a), and downlink is shown in Fig. 6 (b)
The analog result of the input/output signal of modulation removal module；And
It is shown in Fig. 7 (a) and accesses the functional block diagram of the optical network unit of commercialization xPON in fusion optical-fiber network, figure in metropolitan area
It is shown in 7 (b) and accesses the functional block diagram of the optical network unit of commercialization 10G-PON in fusion optical-fiber network in metropolitan area；
The detailed construction and operation principle of upstream wavelength conversion module (UWC) are shown in Fig. 8 (a), are shown in Fig. 8 (b)
The analog result of upstream wavelength conversion module input/output signal.
Specific implementation mode
Below with reference to the network structure in Fig. 2, the module map in method flow diagram and Fig. 4 in Fig. 3 is situated between in detail
It continues and solves the method and remote node equipment of above-mentioned technical problem.It should be noted that although being described with particular order in Fig. 3
The step of method, but this does not require that or implies and must execute these operations according to the particular order, or must hold
Operation shown in row whole could realize desired as a result, on the contrary, the step of describing in flow chart, which can change, executes sequence.It is attached
Add ground or it is alternatively possible to omit certain steps, multiple steps, which are merged into a step, to be executed, and/or a step is divided
Solution is execution of multiple steps.
A network structure for implementing the method for the present invention fusion Metropolitan Area Network (MAN) and access net is shown in Fig. 2.As shown,
In the disclosed embodiment of the present invention, disclosed remote node equipment realizes the number of access net and Metropolitan Area Network (MAN) through the invention
According to exchange, an overall network is fused into achieve the purpose that different types of access net and Metropolitan Area Network (MAN).In the present invention
Metropolitan area access fusion optical-fiber network refers to the optical-fiber network for Metropolitan Area Network (MAN) and access net being fused into an entirety.
In the present invention, the corresponding access net of each remote node (RN) and the responsible corresponding access net and city
The fusion of domain net.Remote node is located at the junction of access net and Metropolitan Area Network (MAN) to implement the data exchange of access net and Metropolitan Area Network (MAN).N
A excessively N number of remote node of access Netcom is connected in a metropolitan area looped network to form a metropolitan area access fusion optical-fiber network.City
Optical line terminal (OLT) in the net of domain can be located at the convergence edge of Metropolitan Area Network (MAN) and backbone network to connect the network of more top.
In an embodiment of the present invention, each remote node corresponds to a wavelength dedicated, and the wavelength dedicated is：Wave
The continuous light of a length of particular value does not have modulation data in the wavelength dedicated, after the wavelength dedicated is by modulation downlink data,
The wavelength dedicated becomes wavelength dedicated downlink signal.Optical line terminal passes through the wavelength dedicated downlink corresponding to each remote node
Signal sends downlink data to each remote node.As shown in Fig. 2, remote node RNiCorresponding wavelength dedicated downlink signal
It is the lightwave signal λ that wavelength value is ii；Remote node RNjCorresponding wavelength dedicated downlink signal is the light wave that wavelength value is j
Signal λj。
It is that wavelength is the continuous of particular value to also have at least one common wavelength, the common wavelength on the looped network of Metropolitan Area Network (MAN)
Light.The common wavelength cannot be wavelength dedicated, that is, the wavelength of common wavelength cannot be that any one in Metropolitan Area Network (MAN) is special
The wavelength of wavelength.In the present invention, the embodiment for listing common wavelength there are two tools in metropolitan area access fusion net, to illustrate one
The case where a Metropolitan Area Network (MAN) and xPON access nets and 10G-PON access nets blend, two common wavelengths are in the present embodiment
Wavelength value is the light wave λ of 1490nm1490With the light wave λ that wavelength value is 1577nm1577。
It should be noted that, although only disclosing tool in Metropolitan Area Network (MAN) in an embodiment of the present invention, there are two common wavelengths to believe
Number the case where, but those skilled in the art be it is recognised that the quantity of the common wavelength can be equal to one, or big
In two, and the quantity of the common wavelength signal can be according to the number of types of the access net blended with Metropolitan Area Network (MAN) come really
Fixed, for example, being blended with Metropolitan Area Network (MAN) when there are three types of different types of access net, then the common wavelength can be three.
In addition, it is necessary to explanation, the wavelength value of common wavelength are not limited to wavelength value disclosed herein, it can basis
It is various to access the wavelength value used in the normal downlink signals netted to determine, for example, when some interior used downlink signal of access net
Wavelength value be Xnm, then the wavelength value of common wavelength can be set as Xnm, the purpose set in this way be so that common wavelength and
The access network mark is accurate mutually compatible, so that in the case of optical network unit in not changing the access net, common wavelength signal can
It is transmitted and receives in the access net, to realize that Metropolitan Area Network (MAN) is blended with access net, particular content will hereafter be done specifically
It is bright.
Show one kind of one embodiment according to the invention for merging Metropolitan Area Network (MAN) and access net (xPON in Fig. 4 (a)
And 10G-PON) remote node equipment 400 in modular unit, including：
First image intensifer 402, MAN Solution Wavelength division multiplexing module 404, downstream wavelength converter 406 access net wavelength-division
Multiplexing module 408, Corticofugal Modulation of Somatosensory remove module 410, upstream wavelength converter 412, Metropolitan Area Network (MAN) Wavelength division multiplexing module 414, optocoupler
Clutch 418, the second image intensifer 416.
As shown in figure 3, in step 302, MAN Solution Wavelength division multiplexing module 404 passes the downlink received from Metropolitan Area Network (MAN)
Defeated signal solution wavelength-division be multiplexed into two common wavelengths, corresponding current remote node wavelength dedicated downlink signal and correspondence
Other wavelength signals of other remote nodes, wherein the common wavelength is not data carrying continuous light, the wavelength dedicated
Downlink signal is loaded with the downlink data for being sent to current remote node, other described wavelength signals include other remote nodes
The wavelength dedicated up-delivering signal of wavelength dedicated downlink signal and other remote nodes.The wavelength dedicated up-delivering signal refers to
Lightwave signal after the upstream data of wavelength dedicated modulation access net, i.e.,：Wavelength dedicated up-delivering signal is loaded with the uplink of access net
Data.
Remote node RN shown in Fig. 4iEmbodiment in, the corresponding wavelength dedicated of the node be i, by Metropolitan Area Network (MAN) demultiplex
Divide after Multiplexing module 404, the downstream transmission signals received from Metropolitan Area Network (MAN) are multiplexed into three parts by solution wavelength-division, respectively：
Other wavelength signals of other corresponding remote nodes, the road signal are immediate by-pass to Metropolitan Area Network (MAN) Wavelength division multiplexing module 414；It is corresponding
Current remote node RNiWavelength dedicated downlink signal λi, which is input in downstream wavelength converter 406, wherein institute
State wavelength dedicated downlink signal λiIt is loaded with and is sent to current remote node RNiDownlink data；Wavelength be respectively 1490nm and
Two common wavelength λ of 1577nm1490And λ1577, common wavelength is input to photo-coupler 418.
Photo-coupler 418 is described two public being transmitted by two-way of obtaining of the MAN Solution Wavelength division multiplexing module
Wavelength coupling and power distribution at two common wavelengths by transmitting all the way download part, and two by transmitting all the way
The transparent transmission part of a common wavelength, the download part are sent to the downstream wavelength converter 406, transparent transmission part quilt
It is sent to the Metropolitan Area Network (MAN) Wavelength division multiplexing module 414.Wherein, the transparent transmission part of common wavelength and download part are through photo-coupler
418 have redistributed signal power.
It should be noted that when two or more access nets is merged with Metropolitan Area Network (MAN), then common wavelength quantity will increase,
Therefore the input port of photo-coupler 418 also can accordingly increase, but output port is still two, and one end is the defeated of transparent transmission part
Go out, the other end is the output of download part.
In a preferred embodiment, the first image intensifer is additionally provided with before MAN Solution Wavelength division multiplexing module 404
402, it is used to amplify the downstream transmission signals received from Metropolitan Area Network (MAN).
In step 304, downstream wavelength converter 406 is the wavelength dedicated downlink signal λiOn downlink data conversion
Onto the download part of described two common wavelengths.
Specifically, in the present embodiment, downstream wavelength converter 406 is connected with the photo-coupler 418 to receive
State two common wavelength λ1490And λ1577Download part, and be connected to connect with the MAN Solution Wavelength division multiplexing module 404
Receive the wavelength dedicated downlink signal λi, the downstream wavelength converter 406 is the downlink on the wavelength dedicated downlink signal
Data are transformed into the download part of described two common wavelengths, and export it is converted after two common wavelength signals and special
Wavelength downstream attenuation signal, wherein it is described it is converted after two common wavelength signals be loaded with downlink data.Institute after converted
The optical signal to noise ratio for stating wavelength dedicated downstream attenuation signal declines.
Wavelength convert can be realized by several ways.Most simple and effective method is the friendship using semiconductor optical amplifier
Gain modulation (XGM) effect is pitched to realize the conversion.One pump light with high luminous power and one are with low-power
Light is detected to inject in a semi-conductor optical amplifier (SOA) simultaneously.Due to gain saturaition caused by carrier depletion, visit
Survey the signal that light carries one and pump light signals reverse phase.Therefore the information being modulated in light wave can be in different wave length
It is converted between light wave.
The detailed construction and operation logic of downstream wavelength conversion module (DWC) are shown in Fig. 5 (a).It is preferred at one
In embodiment, the downstream wavelength converter 406 is made of the first semiconductor optical amplifier 506 for being operated in saturation region, described
Wavelength dedicated downlink signal λiAs the first pump light, described two common wavelength λ1490And λ1577Download part be first visit
Light is surveyed, by the cross-gain modulation of first semiconductor optical amplifier 506, on the wavelength dedicated downlink signal
Downlink data be transformed into the download part of described two common wavelengths.
It should be pointed out that the phase for the downlink data being transformed into the download part of described two common wavelengths with it is described
The opposite in phase of downlink data on wavelength dedicated downlink signal.By the special wave of the first semiconductor optical amplifier 506
The optical signal to noise ratio of long downlink signal is reduced because of the gain saturatiuon characteristic of the first semiconductor optical amplifier 506.
First pump light and the first detection light can be penetrated from the same side of the active layer of semiconductor optical amplifier 506 jointly
Enter, or is injected respectively from the opposite side of active layer.When the first pump light and the first detection light are jointly from semiconductor optical amplifier
When the same side of 506 active layer is injected, need to connect an optical filter in the output end of semiconductor optical amplifier 506 to select
It is logical obtain it is converted after pump light or it is converted after detection light.
In a preferred embodiment, the first pump light and first detects light from the active of semiconductor optical amplifier 506
The opposite side of layer is injected simultaneously respectively.The both sides of the semiconductor optical amplifier 506 are additionally provided with first annular device 504 and second
Circulator 502, the first annular device 504 are connected with the first end of the active layer of first semiconductor optical amplifier 506, point
Separate out described two common wavelength signals that downlink data is loaded with after the conversion of downstream wavelength converter；Second circulator 502 with
The second end of the active layer of first semiconductor optical amplifier 506 is connected, and isolates transformed through downstream wavelength converter
The wavelength dedicated downstream attenuation signal；
The analog result of downstream wavelength conversion module input/output signal is shown in Fig. 5 (b).First group of waveform is shown
At the downlink input 2 on 506 right side of the first semiconductor optical amplifier, the active layer is injected by the first annular device
The waveform of wavelength dedicated downlink signal；Second group and third group waveform are shown on 506 right side of the first semiconductor optical amplifier
At downlink output 1, is separated by the first annular device, be loaded with the wave of two common wavelength signals of downlink data
Shape；4th group of waveform is shown at the downlink output 2 in 506 left side of the first semiconductor optical amplifier, passes through second annular
The waveform for the wavelength dedicated downstream attenuation signal that device is isolated.
Within step 306, Corticofugal Modulation of Somatosensory removal module 410 removes the lower line number in the wavelength dedicated downstream attenuation signal
According to obtain the wavelength dedicated of removal downlink data.
Specifically, in the present embodiment, Corticofugal Modulation of Somatosensory removal module 410 is connected with the downstream wavelength converter 406
To receive the transformed wavelength dedicated downstream attenuation signal, the Corticofugal Modulation of Somatosensory removes module 410 the wavelength dedicated
Downlink data removal in downstream attenuation signal, and export the wavelength dedicated of a removal downlink data.
In a preferred embodiment, the Corticofugal Modulation of Somatosensory removal module 410 is partly led by the third for being operated in saturation region
Body image intensifer is constituted, and the wavelength dedicated downstream attenuation signal is input to the active layer of the third semiconductor optical amplifier
It is interior, the light noise of the wavelength dedicated downstream attenuation signal is reduced by the gain saturatiuon characteristic of the third semiconductor amplifier
Than to remove the downlink data in wavelength dedicated downlink signal, to obtain wavelength dedicated.
The characteristic curve of the input and output of Corticofugal Modulation of Somatosensory removal module is shown in Fig. 6 (a), as shown, when third half
When conductor image intensifer is operated in zone of saturation, gain saturatiuon characteristic makes the optical signal to noise ratio of optical signal reduce.Input terminal λi
Signal is after the conversion of zone of saturation in the λ that output end output optical signal to noise ratio is very lowiSignal, thus output end output should
λiSignal can approximately be considered the λ of no modulated dataiLight wave.
Show that the analog result of the input/output signal of Corticofugal Modulation of Somatosensory removal module, first group of waveform are shown in Fig. 6 (b)
Waveform in third semiconductor optical amplifier input, second group of waveform are shown at third semiconductor optical amplifier output
Waveform.By second group of waveform it can be found that the gain saturatiuon characteristic through third semiconductor optical amplifier makes optical signal
Optical signal to noise ratio significantly reduces, therefore the optical signal of output end output can approximately be considered the light of no modulated data
Wave.
It should be pointed out that the wavelength dedicated for removing downlink data by the above method by obtaining may still can carry one
A little interference signals, the burr waveform in second group of waveform of Fig. 6 (b) is the interference signal, this is because can not be under
Row data completely remove caused.But disclosed method is substantially wavelength dedicated downstream attenuation through the invention
Downlink data on signal eliminates.
In step 308 and 310, access net Wavelength division multiplexing module 416 sends to access net and is loaded with the lower line number
According to two common wavelength signals, and receive the upstream signals sent of access net, the upstream signals carry
There is the upstream data sent out in being netted from access.
Specifically, in the present embodiment, downlink input terminal and the downstream wavelength of access net Wavelength division multiplexing module 408 turn
Parallel operation 406 is connected to receive the common wavelength signal for being loaded with downlink data, the uplink input of access net Wavelength division multiplexing module 408
Hold the upstream signals (λ for being received from access net and being loaded with upstream data1310Or λ1270), the access net Wavelength division multiplexing module
408 pairs of described two common wavelength signals for being loaded with downlink data and the upstream signals of upstream data are loaded with into traveling wave
Divide multiplexing, and the common wavelength signal for being loaded with downlink data is sent to by access net by downlink output end, while is defeated in uplink
Outlet obtains the upstream signals (λ for being loaded with upstream data1310Or λ1270), under the access net Wavelength division multiplexing module 408
Row output end is the same port with uplink input end.
The wavelength value of upstream signals by access net type determine, the upstream signals λ of 10G-PON1270Wave
Long value is 1270nm, the upstream signals λ of xPON1310Wavelength value be 1310nm.
In a preferred embodiment, the access net Wavelength division multiplexing module 408 connects the second image intensifer 416, institute
State the signal transmitted in the second image intensifer 416 amplification access net.
As shown in Fig. 7 (a) and 7 (b), in the user side of local access network, in now netting in optical network unit (ONU)
A wavelength blocker filter (WBF) is embedded in filter out useless wavelength signals and out-of-band noise, is received to leave expectation
Downstream wavelength signal.Therefore, it is not necessarily to do the optical network unit (ONU) of xPON or 10G-PON in existing net in the present invention
Any modification.
By taking the optical network unit in the xPON access nets in Fig. 7 (a) as an example, under access net Wavelength division multiplexing module 408 passes through
The common wavelength signal for being loaded with downlink data is sent to access net by row output end, by accessing the passive optical splitter in netting
(SPL), the optical network unit of the optical network unit (ONU) being sent in access net, xPON is loaded with via wavelength division multiplexer acquisition
The common wavelength signal of downlink data accesses net standard criterion according to xPON, and downlink data is carried in xPON access nets
On 1490nm wavelength, therefore wavelength blocker filter (WBF) 702 filters out the common wavelength signal that wavelength is 1577nm, and makes
The common wavelength signal that wavelength with xPON standards is 1490nm demodulates institute by the filter, then photodetector
State by common wavelength signal to obtain downlink data.Similarly, the optical network unit in 10G-PON (ONU) can also pass through
Its existing wavelength blocker filter (WBF) 704 filters out the common wavelength signal that wavelength is 1490nm.Thus we can send out
It is existing, it is applicable in the method disclosed in this invention for merging Metropolitan Area Network (MAN) and access net and eliminates changing for the docking interior optical network unit of networking
It is dynamic, to ensure that " colourless " of optical network unit.
In step 312, upstream wavelength converter 412 is transformed into the upstream data on the upstream signals and goes
Except on the wavelength dedicated downlink signal of downlink data.
Specifically, in the present embodiment, upstream wavelength converter 412 is connected with Corticofugal Modulation of Somatosensory removal module 410
To have removed the wavelength dedicated downlink signal of downlink data described in receiving one, and with access net Wavelength division multiplexing module 416
Uplink output end is connected to receive the upstream signals, and the upstream wavelength converter 412 believes the uplink
After upstream data on number has removed described in being transformed on the wavelength dedicated downlink signal of downlink data, and output one is converted
Be loaded with upload data wavelength dedicated downlink signal.
As shown in Fig. 8 (a), in a preferred embodiment, the upstream wavelength converter 412 is by being operated in saturation region
The second semiconductor optical amplifier 806 constitute, the upstream signals (λ1310Or λ1270) it is used as the second pump light, it is described
The wavelength dedicated for removing downlink data is the second detection light, is imitated by the cross-gain modulation of second semiconductor optical amplifier
It answers, the upstream data on the upstream signals is transformed into the wavelength dedicated of the removal downlink data, it is special to obtain
With wavelength up-delivering signal.
Second pump light and the second detection light can be penetrated from the same side of the active layer of semiconductor optical amplifier 806 jointly
Enter, or is injected respectively from the opposite side of active layer.When the second pump light and the second detection light are jointly from semiconductor optical amplifier
When the same side of 806 active layer is injected, need to connect an optical filter in the output end of semiconductor optical amplifier 806 to select
It is logical obtain it is converted after pump light or it is converted after detection light.
In a preferred embodiment, the second pump light and second detects light from the active of semiconductor optical amplifier 806
The opposite side of layer is injected simultaneously respectively.The side of the semiconductor optical amplifier 806 is additionally provided with third circulator 802, and described
Three circulators 802 are connected with the first end of the active layer of first semiconductor optical amplifier 806, isolate it is converted after load
There is the wavelength dedicated up-delivering signal of upstream data.The phase of data on wavelength dedicated up-delivering signal and the upstream signals
On upstream data opposite in phase.
Show that the analog result of upstream wavelength conversion module input/output signal, first group of waveform are shown in Fig. 8 (b)
At the uplink input 2 in 806 left side of the second semiconductor optical amplifier, the active layer is injected by the third circulator
The waveform of upstream signals；Second group of waveform shows that the uplink on 806 right side of the second semiconductor optical amplifier inputs at 1,
It is injected into the waveform of the wavelength dedicated of the removal downlink data of the active layer；Third group waveform is shown leads the second half
At the uplink output in the left side of body image intensifer 806, by the third circulator isolate it is converted after be loaded with upload number
According to wavelength dedicated up-delivering signal waveform.
In a step 314, Metropolitan Area Network (MAN) Wavelength division multiplexing module 414 by wavelength-division multiplex the wavelength dedicated for being loaded with upstream data
Other wavelength signals of up-delivering signal, the transparent transmission part of common wavelength and other remote nodes are uploaded to the Metropolitan Area Network (MAN).
Specifically, in the present embodiment, Metropolitan Area Network (MAN) Wavelength division multiplexing module 414 is connected with the upstream wavelength converter 412
It connects and is loaded with the wavelength dedicated up-delivering signal for uploading data described in one to receive, and Metropolitan Area Network (MAN) Wavelength division multiplexing module 414 and city
Domain net solution Wavelength division multiplexing module 404 be connected transparent transmission part to receive at least one common wavelength and it is corresponding other
Other described wavelength signals of remote node, the Metropolitan Area Network (MAN) Wavelength division multiplexing module upload the wavelength dedicated for being loaded with upstream data
Other wavelength signals of signal, the transparent transmission part of common wavelength and other corresponding remote nodes carry out wavelength-division multiplex, and to institute
It states Metropolitan Area Network (MAN) and uploads the signal after the wavelength-division multiplex.
The invention also discloses a kind of method of auxiliary fusion Metropolitan Area Network (MAN) and access net, the optical line terminal is located at metropolitan area
In net, include the following steps：
Set at least one common wavelength；Wavelength dedicated downlink signal is generated, each wavelength dedicated downlink signal corresponds to
One remote node, the wavelength dedicated downlink signal are loaded with the downlink data for being sent to corresponding remote node；Common wavelength
Wavelength value it is different from the wavelength value of wavelength dedicated downlink signal.The wavelength dedicated downlink signal and at least one public wave
Long wavelength-division is multiplexed into downstream transmission signals, and is transmitted in the Metropolitan Area Network (MAN).
According to the above method, the invention also discloses a kind of optical line terminals of auxiliary fusion Metropolitan Area Network (MAN) and access net, such as
Shown in Fig. 4 (b), which includes：
Common wavelength laser emitting module 422 is used to emit at least one common wavelength.The quantity of the common wavelength
It can be determined according to the species number of the access net blended with Metropolitan Area Network (MAN).There is no modulation data in the common wavelength.
The wavelength dedicated downlink signal of wavelength dedicated downlink signal transmitting module 424, each transmitting corresponds to one remotely
Node；Each wavelength dedicated downlink signal uploads the downlink data that oriented corresponding remote node is sent.
Wherein, the wavelength value of common wavelength is different from the wavelength value of wavelength dedicated downlink signal.
Wavelength division multiplexing module 426 emits with the common wavelength laser emitting module 422 and wavelength dedicated downlink signal
Module 424 is connected, and for the wavelength dedicated downlink signal of each remote node and at least one common wavelength into traveling wave
Divide multiplexing, and is transmitted in Metropolitan Area Network.
The above description of the disclosure is for enabling any those of ordinary skill of this field to realize or use the present invention.It is right
For those of ordinary skill in the art, the various modifications of the disclosure will be apparent from, and generality defined herein
Principle can also be applied to other deformations in the case of without deviating from the spirit and scope of the disclosed invention.Therefore, the present invention is simultaneously
It is not limited to example as described herein and design, but it is consistent with the widest scope of principle disclosed herein and novel features.
Claims (15)
1. a kind of method merging Metropolitan Area Network (MAN) and access net on remote node, includes the following steps：
A. the downstream transmission signals solution wavelength-division received from the Metropolitan Area Network (MAN) is multiplexed at least one common wavelength, a correspondence
The wavelength dedicated downlink signal and other wavelength signals of the remote node, the common wavelength pass through photo-coupler power point
With for transparent transmission part and download part；
B. the downlink data on the wavelength dedicated downlink signal is transformed into the download part of the common wavelength to obtain
Common wavelength signal and wavelength dedicated downstream attenuation signal；
C. the downlink data in the wavelength dedicated downstream attenuation signal is removed, to obtain wavelength dedicated；
D. the common wavelength signal is sent to access net；
E. the upstream signals that the access net is sent are received；
F. the upstream data on the upstream signals is transformed into the wavelength dedicated, to obtain communication in wavelength dedicated
Number；And
G. by wavelength-division multiplex the wavelength dedicated up-delivering signal, the transparent transmission part of the common wavelength and other described wavelength
Signal is uploaded to the Metropolitan Area Network (MAN).
2. according to the method described in claim 1, wherein, in stepb, the wavelength dedicated downlink signal is the first pumping
The download part of light, the common wavelength is the first detection light, is imitated by the cross-gain modulation of the first semiconductor optical amplifier
It answers, the downlink data on the wavelength dedicated downlink signal is transformed into the download part of the common wavelength.
3. according to the method described in claim 2, wherein, in step F, the upstream signals as the second pump light,
The wavelength dedicated is the second detection light, by the cross-gain modulation of the second semiconductor optical amplifier, the uplink
Upstream data on transmission signal is transformed into the wavelength dedicated.
4. according to the method described in claim 3, wherein,
In stepb：First pump light and the first detection active layer of the light from first semiconductor optical amplifier
First end and second end inject simultaneously；
In step F：Second pump light and the second detection active layer of the light from second semiconductor optical amplifier
First end and second end inject simultaneously.
5. any one method according to Claims 1-4, wherein in step C：
The optical signal to noise ratio of the wavelength dedicated downstream attenuation signal is reduced by the gain saturatiuon characteristic of third semiconductor amplifier,
To remove the downlink data on the wavelength dedicated downstream attenuation signal.
6. a kind of method of auxiliary fusion Metropolitan Area Network (MAN) and access net on optical line terminal, includes the following steps：
Type at least based at least one access net merged with Metropolitan Area Network (MAN), sets at least one common wavelength；
Wavelength dedicated downlink signal is generated, each wavelength dedicated downlink signal corresponds to a remote node, the remote node
The corresponding access net being responsible at least one access net is merged with the Metropolitan Area Network (MAN)；
The wavelength dedicated downlink signal and at least one common wavelength wavelength-division multiplex at downstream transmission signals, and it is transmitted to institute
It states in Metropolitan Area Network (MAN).
7. a kind of remote node for merging Metropolitan Area Network (MAN) and access net, which is characterized in that including：
MAN Solution Wavelength division multiplexing module is used for the downstream transmission signals solution wavelength-division multiplex received from the Metropolitan Area Network (MAN)
It is described at least one common wavelength, the wavelength dedicated downlink signal and other wavelength signals of corresponding current remote node
Common wavelength is transparent transmission part and download part by photo-coupler power distribution；
Downstream wavelength converter receives the download part of the common wavelength and the wavelength dedicated downlink signal, described in
Downlink data on wavelength dedicated downlink signal is transformed into the download part of the common wavelength to obtain common wavelength signal
With wavelength dedicated downstream attenuation signal；
Corticofugal Modulation of Somatosensory removes module, receives the wavelength dedicated downstream attenuation signal, and the wavelength dedicated downstream attenuation
Downlink data removal in signal, to obtain wavelength dedicated；
Access net Wavelength division multiplexing module, downlink input terminal receives the common wavelength signal, and uplink input end is from access net
Upstream signals are received, wavelength-division multiplex are carried out to the common wavelength signal and the upstream signals, and pass through it
Common wavelength signal is sent to access net by downlink output end, while row output end sends the upstream signals on it；
Upstream wavelength converter receives the wavelength dedicated and the upstream signals, the upstream signals
On upstream data be transformed into the wavelength dedicated to obtain wavelength dedicated up-delivering signal；
Metropolitan Area Network (MAN) Wavelength division multiplexing module receives transparent transmission part and the institute of the wavelength dedicated up-delivering signal and the common wavelength
Other wavelength signals are stated, the transparent transmission part to the wavelength dedicated up-delivering signal, the common wavelength and other described wavelength
Signal carries out wavelength-division multiplex and is uploaded to the Metropolitan Area Network (MAN).
8. in remote node according to claim 7, it is characterised in that：The downstream wavelength converter is by being operated in saturation
First semiconductor optical amplifier in area is constituted, and the wavelength dedicated downlink signal is the first pump light, under the common wavelength
Part is carried for the first detection light, by the cross-gain modulation of first semiconductor optical amplifier, the special wave
Downlink data on long downlink signal is transformed into the download part of the common wavelength.
9. in remote node according to claim 8, it is characterised in that：The upstream wavelength converter is by being operated in saturation
Second semiconductor optical amplifier in area is constituted, and for the upstream signals as the second pump light, the wavelength dedicated is second
Light is detected, by the cross-gain modulation of second semiconductor optical amplifier, upper on the upstream signals
Row data are transformed into the wavelength dedicated.
10. in remote node according to claim 9, it is characterised in that：
The first end of first pump light and the active layer of the first detection light from first semiconductor optical amplifier and
Second end is injected simultaneously；
The first end of second pump light and the active layer of the second detection light from second semiconductor optical amplifier and
Second end is injected simultaneously.
11. in the remote node according to any one of claim 9 or 10, which is characterized in that further include：The downlink tune
System removal module is made of the third semiconductor optical amplifier for being operated in saturation region, passes through the increasing of the third semiconductor amplifier
Beneficial saturated characteristic reduces the optical signal to noise ratio of the wavelength dedicated downstream attenuation signal, to remove on wavelength dedicated downstream attenuation signal
Downlink data.
12. in remote node according to claim 11, which is characterized in that further include：Photo-coupler, the metropolitan area
Net solution Wavelength division multiplexing module obtain by the coupling of the common wavelength at least transmitted all the way and power distribution is at by all the way
Transmission the common wavelength download part, and the common wavelength by transmitting all the way transparent transmission part.
13. in remote node according to claim 12, which is characterized in that further include：
First annular device is connected with the first end of the active layer of first semiconductor optical amplifier, isolates described public
Wavelength signals；
Second circulator is connected with the second end of the active layer of first semiconductor optical amplifier, isolates described special
Wavelength downstream attenuation signal；
Third circulator is connected with the first end of the active layer of second semiconductor optical amplifier, isolates described special
Wavelength up-delivering signal.
14. in remote node according to claim 13, which is characterized in that further include：
First image intensifer is connected with the input terminal of the MAN Solution Wavelength division multiplexing module, the downstream transmission signals
It is inputted after the amplification of the first image intensifer in the MAN Solution Wavelength division multiplexing module；
Second image intensifer is connected with the access net Wavelength division multiplexing module, the second image intensifer amplification access net
The signal of middle transmission.
15. a kind of optical line terminal of auxiliary fusion Metropolitan Area Network (MAN) and access net, which is characterized in that including：
Common wavelength laser emitting module is used at least send out based on the type of at least one access net merged with Metropolitan Area Network (MAN)
Penetrate at least one common wavelength；
The wavelength dedicated downlink signal of wavelength dedicated downlink signal transmitting module, each transmitting corresponds to a remote node, institute
State merging for corresponding access net that remote node is responsible at least one access net and the Metropolitan Area Network (MAN)；
Wavelength division multiplexing module is connected with the common wavelength laser emitting module and wavelength dedicated downlink signal transmitting module
It connects, and the wavelength dedicated downlink signal and at least one common wavelength wavelength-division multiplex at downstream transmission signals, and passes
It transports in Metropolitan Area Network.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310408149.9A CN104426739B (en) | 2013-09-10 | 2013-09-10 | A kind of method, remote node and the optical line terminal of fusion Metropolitan Area Network (MAN) and access net |
| TW103127768A TWI555352B (en) | 2013-09-10 | 2014-08-13 | Fusion will be network and access network methods, remote nodes and optical line terminals |
| JP2016542393A JP6250820B2 (en) | 2013-09-10 | 2014-09-08 | Method for merging metro network and access network, remote node, and optical line termination device |
| PCT/IB2014/002003 WO2015036856A2 (en) | 2013-09-10 | 2014-09-08 | Method of converging metro network and access network, remote node and optical line terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310408149.9A CN104426739B (en) | 2013-09-10 | 2013-09-10 | A kind of method, remote node and the optical line terminal of fusion Metropolitan Area Network (MAN) and access net |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104426739A CN104426739A (en) | 2015-03-18 |
| CN104426739B true CN104426739B (en) | 2018-08-10 |
Family
ID=52292955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310408149.9A Active CN104426739B (en) | 2013-09-10 | 2013-09-10 | A kind of method, remote node and the optical line terminal of fusion Metropolitan Area Network (MAN) and access net |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6250820B2 (en) |
| CN (1) | CN104426739B (en) |
| TW (1) | TWI555352B (en) |
| WO (1) | WO2015036856A2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267980A (en) * | 1999-03-22 | 2000-09-27 | 朗迅科技公司 | Wave separating multiplex system for optical cut-in ring |
| US8335432B1 (en) * | 2008-04-08 | 2012-12-18 | Uvic Industry Partnerships Inc. | Extended broadband passive optical networks |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3442840B2 (en) * | 1993-12-27 | 2003-09-02 | 株式会社東芝 | Optical communication system |
| CA2181362C (en) * | 1994-01-18 | 1999-09-28 | Vivek Tandon | Interconnected passive optical networks |
| ES2109148B1 (en) * | 1994-12-30 | 1998-07-01 | Alcatel Standard Electrica | OPTICAL COMMUNICATION NETWORK. |
| GB0018604D0 (en) * | 2000-07-29 | 2000-09-13 | Marconi Caswell Ltd | Optical fibre wavelength division multiplex network |
| DE102005010610A1 (en) * | 2005-03-08 | 2006-09-21 | Siemens Ag | Optical transmission system |
| US7706688B2 (en) * | 2006-07-17 | 2010-04-27 | University Of Ottawa | Wavelength reconfigurable optical network |
| WO2012014444A1 (en) * | 2010-07-29 | 2012-02-02 | 日本電気株式会社 | Optical communication processing device in optical network, and wavelength conversion method thereof |
| WO2013021461A1 (en) * | 2011-08-09 | 2013-02-14 | 三菱電機株式会社 | Optical communication system, communication apparatus and band control method |
| US8923672B2 (en) * | 2011-11-10 | 2014-12-30 | Alcatel Lucent | Wavelength router for a passive optical network |
| TWI441487B (en) * | 2011-12-29 | 2014-06-11 | Chunghwa Telecom Co Ltd | Priority of video packet collection method |
-
2013
- 2013-09-10 CN CN201310408149.9A patent/CN104426739B/en active Active
-
2014
- 2014-08-13 TW TW103127768A patent/TWI555352B/en not_active IP Right Cessation
- 2014-09-08 WO PCT/IB2014/002003 patent/WO2015036856A2/en active Application Filing
- 2014-09-08 JP JP2016542393A patent/JP6250820B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267980A (en) * | 1999-03-22 | 2000-09-27 | 朗迅科技公司 | Wave separating multiplex system for optical cut-in ring |
| US8335432B1 (en) * | 2008-04-08 | 2012-12-18 | Uvic Industry Partnerships Inc. | Extended broadband passive optical networks |
Non-Patent Citations (2)
| Title |
|---|
| Josep Prat等.Hybrid ring-tree WDM/TDM-PON optical distribution network.《11th International Conference on Transparent Optical Networks 20090702 Josep Prat等 Hybrid ring-tree WDM/TDM-PON optical distribution network》.2009,全文. * |
| Using transparent WDM metro rings to provide an out-of-band control network for OpenFlow in MAN;Sanchez Fuentes等;《15th International Conference on Transparent Optical Networks (ICTON)》;20130627;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016536921A (en) | 2016-11-24 |
| JP6250820B2 (en) | 2017-12-20 |
| TW201517557A (en) | 2015-05-01 |
| CN104426739A (en) | 2015-03-18 |
| TWI555352B (en) | 2016-10-21 |
| WO2015036856A3 (en) | 2015-06-11 |
| WO2015036856A2 (en) | 2015-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101729949B (en) | WDM PON device with dynamically allocable wavelengths | |
| CN103051984B (en) | Optical signal transmission method and device | |
| CN102724012B (en) | Light-source-shared WDM-PON (wavelength division multiplexed passive optical network) system based on suppressed carrier modulation technique | |
| CN102665152B (en) | Novel wide-area coverage hybrid wavelength-time division multiplexing passive optical network system | |
| CN103023559B (en) | WDM-PON (wavelength-division-multiplexing passive optical network) system based on resource sharing protecting mechanism and method for protecting WDM-PON system based on resource sharing protecting mechanism | |
| CN103370888A (en) | Optical network communication system with optical line terminal transceiver and method of operation thereof | |
| CN101964924B (en) | Method, device and system for transmitting information in passive optical network | |
| CN101577842B (en) | Optical communication system, optical communication device and optical communication method | |
| Ji et al. | All optical switching networks with energy-efficient technologies from components level to network level | |
| CN102833030B (en) | TWDM-PON (Time Wavelength Division Multiplexing-Passive Optical Network) ONU (Optical Network Unit) implementation device and method based on cyclical optical tunable filter | |
| CN103516431B (en) | Photoelectricity optical repeater, the long processing method away from box and its to upper and lower traveling optical signal | |
| Casellas et al. | Advances in SDN control and telemetry for beyond 100G disaggregated optical networks | |
| CN102088329B (en) | System and method for realizing broadcasting service transmission for wavelength division multiplex passive optical network | |
| US8588608B2 (en) | Method for managing the connection in an optical access network, corresponding platform, central office, and computer program product | |
| CN101719804A (en) | Method and device for implementing colorless ONU in wavelength division multiplexing passive optical network | |
| CN102158772B (en) | System and method for being compatible to broadcasting service in colorless wavelength division multiplexing passive optical network | |
| CN104954898A (en) | TWDM-PON (time division multiplexing-passive optical network) structure and TWDM-PON equipment for annular subnet extension and control method | |
| CN104426739B (en) | A kind of method, remote node and the optical line terminal of fusion Metropolitan Area Network (MAN) and access net | |
| CN105025401B (en) | A kind of TWDM-PON system based on subnet extension | |
| CN107947893B (en) | WDM-PON system based on remote node and seed light source | |
| CN103220044B (en) | A kind of optical access network system, Apparatus and method for | |
| CN104936047A (en) | Uplink system of PON (Passive Optical Network) of filter based multicarrier modulation technology | |
| CN102868443A (en) | Orthogonal frequency division multiplexing passive optical network self-healing function realization system and transmission method | |
| CN110447184A (en) | The system and method for intelligent edge-to-edge optical system and wavelength supply | |
| CN101877802B (en) | Wavelength division multiplexing passive optical network based on circulating wavelength routing characteristic of wavelength division multiplexer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 201206 Shanghai, Pudong Jinqiao Ning Bridge Road, No. 388, No. Applicant after: Shanghai NOKIA Baer Limited by Share Ltd Address before: 201206 Shanghai, Pudong Jinqiao Ning Bridge Road, No. 388, No. Applicant before: Shanghai Alcatel-Lucent Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |