CN106209242A - Network node in optical ring network - Google Patents
Network node in optical ring network Download PDFInfo
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- CN106209242A CN106209242A CN201510214067.XA CN201510214067A CN106209242A CN 106209242 A CN106209242 A CN 106209242A CN 201510214067 A CN201510214067 A CN 201510214067A CN 106209242 A CN106209242 A CN 106209242A
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Abstract
The invention provides the network node in a kind of optical ring network, including: light wave download module (110), Electro-optical Modulation module (120), light source (130), the first coupling module (140)；The light wave that light wave download module (110) transmits from the first optical transmission medium (210) downloads the first light wave；The signal of telecommunication is loaded in the second optical transmission medium (220) on the most a branch of target light wave of transmission by Electro-optical Modulation module (120), and this most a branch of target light wave includes the most a branch of light wave in the first optical transmission medium (210) in the light wave of transmission；Light source (130) sends light wave by the 3rd optical transmission medium (230) to the first coupling module (140)；The light wave that light source (130) sends is coupled in the 4th optical transmission medium (240) by the first Coupler Module (140), and network node structure is simple, and cost of manufacture is low, and the decay to optical signal is little.
Description
Technical field
The present invention relates to optical communication field, and more particularly, to the network node in optical ring network.
Background technology
The data-handling capacity to data center that constantly expands of internet data flux proposes new challenge.
Future Data will comprise more computing unit, memory element, input and output I/O cell, often in the heart
The inside of individual unit also will comprise more submodule.It is required for building between these unit and between module
Vertical interference networks support the communication between node and between module, and continuous along with communication bandwidth
Increasing, the optical interconnection network with high data transfer bandwidth becomes the development trend in future.Common network
Topology includes bus-type, annular, grid Mesh topological structure etc., and wherein ring topology has wiring letter
Single, bandwidth availability ratio high, it is especially suitable for the internodal interconnection of data center's short-distance and medium-distance, even
Internodal interconnection on sheet.From communication mode, the communication mode between node includes that program request is (single
Node sends data message to individual node), multicast (individual node send to multiple nodes data message),
Broadcast (individual node sends data message to other all nodes) etc., therefore set up between these nodes
Optical interconnection network must be able to support these communication modes.
Correlation technique provides a kind of optical ring network node realizing broadcast capability based on beam splitter
Optical transmission structure.In this kind of structure, each node of optical ring network comprises a beam splitter.When
Broadcast singal after modulation, when other nodes send broadcast message, is coupled to loop network by one node
In, through other nodes, the beam splitter of other nodes divides the signal into two parts, and a part is transmitted to this
The detector of node, another part light enters into the next node of optical ring network, thus each node
Broadcast message can be received.Owing to using beam splitter in this structure, light wave there will be the biggest declining
Subtracting, it is more weak that broadcast message can become after each node, and node None-identified below can be caused to go out
Optical signal.Add image intensifer and can compensate the decay that beam splitter introduces, but image intensifer is active device
Part, can introduce extra huge cost and power dissipation overhead.
Correlation technique additionally provides a kind of ring optical networks realizing broadcast capability based on multi wave length illuminating source
Network node structure.In this kind of structure, the light transmitting device of each node introduces multi wave length illuminating source, ripple
Long quantity is identical with the quantity of the node receiving broadcast message.Receiving terminal introduces drop filters, uses
In the optical signal downloading specific wavelength.Broadcast message is modulated at the light of multiple wavelength that multi wave length illuminating source sends
In ripple, after other network nodes, the optical signal of specific wavelength can be transmitted to by after drop filters
In the detector of this node, the optical signal of other wavelength is directly by entering the next one after drop filters
Node, thus each node can receive broadcast message.The insertion introduced due to drop filters is damaged
Consume less, therefore this kind of optical network structure need not too much light and compensate.But each node is required for
Comprise multi wave length illuminating source, owing to the cost of multi wave length illuminating source is the highest, add multi-wavelength light in each node
Huge cost price can be brought in source.
In a word, the optical-fiber network joint in the optical ring network being capable of broadcast capability provided in correlation technique
Dot structure is complicated, and cost is the highest, is being applied in data center or SOC(system on a chip) by this kind of optical ring network
In, huge cost pressure can be brought.
Summary of the invention
The invention provides the network node in a kind of optical ring network, network node has simple knot
Structure, relatively low cost of manufacture is low, and the decay to optical signal is little.
First aspect, it is provided that the network node in a kind of optical ring network, this optical ring network includes M
Individual network node, M is the integer more than or equal to 2, each network joint in this M network node
Point includes that the wavelength of the light source of light source and this M network node is different, the reception of this M network node
Wavelength is different, and this network node includes: light wave download module 110, Electro-optical Modulation module 120, light source
130, the first coupling module 140；
This light wave download module 110, downloads in the light wave of transmission from the first optical transmission medium 210
First light wave；
This Electro-optical Modulation module 120, for being loaded in the second optical transmission medium 220 transmission by the signal of telecommunication
The most a branch of target light wave on, obtain target light signal, this most a branch of target light wave include this first
The most a branch of light wave in the light wave of transmission in optical transmission medium 210；
This light source 130, for sending to this first coupling module 140 by the 3rd optical transmission medium 230
Light wave；
This first Coupler Module 140, passes for the light wave that this light source 130 sends is coupled to the 4th light
In defeated medium 240.
In conjunction with first party aspect, in the first possible implementation of first aspect, this light wave is downloaded
Module 110 is connected with this Electro-optical Modulation module 120 by this second optical transmission medium 220, and this electric light is adjusted
Molding block 120 is connected with this first coupling module 140 by the 5th optical transmission medium 250；
The most a branch of target light wave arrives this second optical transmission medium through this light wave download module 110
220, this most a branch of target light wave be in this optical ring network at least one in addition to this network node its
The light wave that his network node sends；
This most a branch of target light wave arrives this Electro-optical Modulation module through this second optical transmission medium 220
120；
This Electro-optical Modulation module 120, for this signal of telecommunication being loaded into this most a branch of target light wave,
Obtain this target light signal；
This target light signal arrives this first coupling module 140 through the 5th optical transmission medium 250；
This first coupling module 140, for the light wave coupling sent with this light source 130 by this target light signal
Close in the 4th optical transmission medium 240.
In conjunction with first aspect, in the implementation that the second of first aspect is possible, this first optical transport
Medium 210 and the 4th optical transmission medium 240 are same optical transmission medium, this first coupling module 140
It is connected with this light wave download module 110 by the 4th optical transmission medium 240, this light wave download module 110
It is connected with this Electro-optical Modulation module 120 by this second optical transmission medium 220；
This first coupling module 140, for by other nets in addition to this network node in this optical ring network
The light wave that the light wave that network node sends sends with this light source 130 is coupled into the 3rd light wave；
3rd light wave arrives this light wave download module 110 through the 4th optical transmission medium 240；
This light wave download module 110, for downloading the 4th light wave, the 4th light wave from the 3rd light wave
The light wave sent for the next-hop network node of this network node；
The most a branch of target light wave arrives this Electro-optical Modulation module through this second optical transmission medium 220
120, this most a branch of target light wave is the residue light wave after removing the 4th light wave in the 3rd light wave；
This Electro-optical Modulation module 120, for this signal of telecommunication being loaded into this most a branch of target light wave,
Obtain this target light signal.
In conjunction with first aspect, in the third possible implementation of first aspect, this second optical transport
Medium 220 and the 4th optical transmission medium 240 are same optical transmission medium, this light wave download module 110
It is connected with this first coupling module 140 by the 6th optical transmission medium 260, this first coupling module 140
It is connected with this Electro-optical Modulation module 120 by this second optical transmission medium 220；
This light wave download module 110, for this ring light of transmission from this first optical transmission medium 210
Downloading the 5th light wave in the light wave that in network, other network nodes in addition to this network node send, this is the years old
Five light waves are the light wave of the next-hop network node transmission of this network node；
6th light wave arrives this first coupling module 140 through the 6th optical transmission medium 260, and the 6th
Light wave is to remove the 5th light wave in the light wave that this other network node in addition to this network node sends
After residue light wave；
This first coupling module 140, for coupling the light wave that the 6th light wave sends with this light source 130
Become this most a branch of target light wave；
This most a branch of target light wave arrives this Electro-optical Modulation module through this second optical transmission medium 220
120；
This Electro-optical Modulation module 120, for this signal of telecommunication being loaded into this most a branch of target light wave,
Obtain this target light signal.
In conjunction with first aspect, arbitrary possibility in the first of first aspect to the third possible implementation
Implementation, in the 4th kind of possible implementation of first aspect, this Electro-optical Modulation module 120
Including the first electrooptic modulator 121 that one or more are connected in series；
Each electrooptic modulator in this one or more the first electrooptic modulator 121 connected in series, uses
In the modulating wave that this signal of telecommunication is loaded into this most a branch of target light wave medium wavelength and this electrooptic modulator
On long identical light wave.
In conjunction with first aspect, arbitrary possibility in the first of first aspect to the third possible implementation
Implementation, in the 5th kind of possible implementation of first aspect, this Electro-optical Modulation module 120
Including a wavelength division multiplexer 122, M-1 the second electrooptic modulator 123 and second coupling module
124；
This wavelength division multiplexer 122, for inputting the every Shu Guangbo in this most a branch of target light wave to being somebody's turn to do
In the second target electrooptic modulator in M-1 the second electrooptic modulator 123；
Each electrooptic modulator in this second target electrooptic modulator, for being loaded into defeated by this signal of telecommunication
Enter to the light wave of this electrooptic modulator, obtain the optical signal corresponding with this electrooptic modulator；
This second coupling module 124, being used for will be with each Electro-optical Modulation in this second target electrooptic modulator
The optical signal that device is corresponding is coupled into this target light signal.
In conjunction with first aspect, arbitrary possibility in the first of first aspect to the third possible implementation
Implementation, in the 6th kind of possible implementation of first aspect, this Electro-optical Modulation module 120
Including a wavelength-selective switches 125, at least one the 3rd electrooptic modulator 126 and the 3rd coupling
Module 127；
This wavelength-selective switches 125, for being input to this at least one the by this most a branch of target light wave
In the 3rd target modulation device in three electrooptic modulators 126；
Each electrooptic modulator in 3rd target modulation device, for being loaded into input extremely by this signal of telecommunication
On the light wave of this electrooptic modulator, obtain the optical signal corresponding with this electrooptic modulator；
3rd coupling module 127, being used for will be with each Electro-optical Modulation in the 3rd target electrooptic modulator
The optical signal that device is corresponding is coupled into this target light signal.
In conjunction with the first possible implementation of first aspect, in the 7th kind of possible reality of first aspect
In existing mode, this light wave download module 110 is wavelength division multiplexer, and this Electro-optical Modulation module 120 includes
M-1 the 4th electrooptic modulator 128；
This wavelength division multiplexer, adjusts for this most a branch of target light wave is input to this M-1 the 4th electric light
In the 4th target electrooptic modulator in device 128 processed；
Each electrooptic modulator in 4th target modulation device, for being loaded into input extremely by this signal of telecommunication
On the light wave of this electrooptic modulator.
In conjunction with first aspect, arbitrary possibility in the possible implementation of the first of first aspect to the 6th kind
Implementation, in the 8th kind of possible implementation of first aspect, this light wave download module 110
For drop filters.
In conjunction with first aspect, arbitrary possibility in the possible implementation of the first of first aspect to the 8th kind
Implementation, in the 9th kind of possible implementation of first aspect, this light source 130 is multi-wavelength
Light source.
In conjunction with first aspect, arbitrary possibility in the possible implementation of the first of first aspect to the 9th kind
Implementation, in the tenth kind of possible implementation of first aspect, this first coupling module 140
For bonder or wavelength division multiplexer.
In conjunction with first aspect, arbitrary possibility in the possible implementation of the first of first aspect to the tenth kind
Implementation, in the 11st kind of possible implementation of first aspect, this network node also includes:
Light amplification module 150, for carrying out attenuation compensation to this target light signal.
Based on technique scheme, the network node in the optical ring network that the embodiment of the present invention provides, tool
There are simple structure and low cost of manufacture, and the decay to optical signal is little.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be to embodiment or existing skill
In art description, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below
It is only some embodiments of the present invention, for those of ordinary skill in the art, is not paying creation
On the premise of property is laborious, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic block diagram of the optical network node of the embodiment of the present invention；
Fig. 2 is another schematic block diagram of the optical network node of the embodiment of the present invention；
Fig. 3 is another schematic block diagram of the optical network node of the embodiment of the present invention；
Fig. 4 is another schematic block diagram of the optical network node of the embodiment of the present invention；
Fig. 5 is the schematic block diagram of Electro-optical Modulation module according to embodiments of the present invention；
Fig. 6 is another schematic block diagram of Electro-optical Modulation module according to embodiments of the present invention；
Fig. 7 is another schematic block diagram of Electro-optical Modulation module according to embodiments of the present invention；
Fig. 8 is another schematic block diagram of Electro-optical Modulation module according to embodiments of the present invention；
Fig. 9 is another schematic block diagram of network node according to embodiments of the present invention；
Figure 10 is the schematic block diagram of network node according to another embodiment of the present invention；
Figure 11 is another schematic block diagram of network node according to another embodiment of the present invention；
Figure 12 is another schematic block diagram of network node according to another embodiment of the present invention；
Figure 13 is the schematic diagram of optical ring network according to embodiments of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment be a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not paying wound
The every other embodiment obtained on the premise of the property made work, broadly falls into the scope of protection of the invention.
Should be understood that the network node of the optical ring network of the embodiment of the present invention, can apply to data center
The interconnection of the nodes such as middle different calculating, storages, it is also possible in on-chip optical interconnection network system.This
Bright this is not construed as limiting.
Fig. 1 shows the network node in optical ring network according to embodiments of the present invention.The present invention implements
The optical ring network of example includes M network node, and M is the integer more than or equal to 2, this M net
Each network node in network node includes that the wavelength of the light source of light source and this M network node is different,
The reception wavelength of this M network node is different, as it is shown in figure 1, network node 100 includes: light wave
Download module 110, Electro-optical Modulation module 120, light source the 130, first coupling module 140；
This light wave download module 110, downloads in the light wave of transmission from the first optical transmission medium 210
First light wave；
This Electro-optical Modulation module 120, for being loaded in the second optical transmission medium 220 transmission by the signal of telecommunication
The most a branch of target light wave on, obtain target light signal, this most a branch of target light wave include this first
The most a branch of light wave in the light wave of transmission in optical transmission medium 210；
This light source 130, for sending to this first coupling module 140 by the 3rd optical transmission medium 230
Light wave；
This first Coupler Module 140, passes for the light wave that this light source 130 sends is coupled to the 4th light
In defeated medium 240.
Therefore, the wavelength of the light source that the all-network node in the optical ring network of the embodiment of the present invention includes
Difference, and the reception wavelength of all-network node is different, the simple in construction of network node, cost of manufacture is low,
Decay to optical signal is little.
Should be understood that in embodiments of the present invention, be connected by optical transmission medium between adjacent network node
Connect the optical-fiber network forming annular, and in each network node, between each functional module, also use optical transport
Medium is connected.
Should be understood that in embodiments of the present invention, optical signal can be along ring optical networks in optical ring network
Network transmits clockwise or counterclockwise, and this is not construed as limiting by the present invention.
Should also be understood that in embodiments of the present invention, each network node also includes functional unit, this function
Unit includes but not limited to computing unit, memory element, input-output unit, and this functional unit is used for connecing
Receive the signal of telecommunication or send the signal of telecommunication.
In embodiments of the present invention, alternatively, the most a branch of mesh of transmission in the second optical transmission medium 220
Mark light wave can be entirely by other nodes transmission in optical ring network, it is also possible to had both included other nets
The light wave that network node sends, includes again the light wave that the light source 130 of this network node 100 sends.
In embodiments of the present invention, alternatively, optical transmission medium can be optical fiber or fiber waveguide, the present invention
This is not construed as limiting.
In embodiments of the present invention, alternatively, this light wave download module 110 is from the first optical transmission medium 210
The signal of telecommunication that other network nodes send can be carried on the first light wave downloaded in the light wave of middle transmission,
Can also not carry the signal of telecommunication that other network nodes send.
In embodiments of the present invention, alternatively, as in figure 2 it is shown, this light wave download module 110 is by being somebody's turn to do
Second optical transmission medium 220 is connected with this Electro-optical Modulation module 120, and this Electro-optical Modulation module 120 is passed through
5th optical transmission medium 250 is connected with this first coupling module 140；
The most a branch of target light wave arrives this second optical transmission medium through this light wave download module 110
220, this most a branch of target light wave be in this optical ring network at least one in addition to this network node its
The light wave that his network node sends；
This most a branch of target light wave arrives this Electro-optical Modulation module through this second optical transmission medium 220
120；
This Electro-optical Modulation module 120, for this signal of telecommunication being loaded into this most a branch of target light wave,
Obtain this target light signal；
This target light signal arrives this first coupling module 140 through the 5th optical transmission medium 250；
This first coupling module 140, for the light wave coupling sent with this light source 130 by this target light signal
Close in the 4th optical transmission medium 240.
Should be understood that in embodiments of the present invention, network node light source send wavelength and self ripple
When the download wavelength of long download module is identical, if certain network node needs to receive another network node
The signal sent, needs the network node receiving signal to need the network node to sending signal to send light
Ripple, in order to after the signal of telecommunication of the network node self sending signal is loaded on this light wave, be sent to
This network node needing to receive signal.
In embodiments of the present invention, alternatively, the network node needing transmission signal can be to ring optical networks
Other all-network nodes in network send signal, it is also possible to selectively in other network nodes
Some specific network node sends signal, and this is not construed as limiting by the present invention.
In embodiments of the present invention, alternatively, as it is shown on figure 3, this first optical transmission medium 210 with should
4th optical transmission medium 240 is same optical transmission medium, and this first coupling module 140 is by the 4th
Optical transmission medium 240 is connected with this light wave download module 110, this light wave download module 110 by this
Two optical transmission mediums 220 are connected with this Electro-optical Modulation module 120；
This first coupling module 140, for by other nets in addition to this network node in this optical ring network
The light wave that the light wave that network node sends sends with this light source 130 is coupled into the 3rd light wave；
3rd light wave arrives this light wave download module 110 through the 4th optical transmission medium 240；
This light wave download module 110, for downloading the 4th light wave, the 4th light wave from the 3rd light wave
The light wave sent for the next-hop network node of this network node；
The most a branch of target light wave arrives this Electro-optical Modulation module through this second optical transmission medium 220
120, this most a branch of target light wave is the residue light wave after removing the 4th light wave in the 3rd light wave；
This Electro-optical Modulation module 120, for this signal of telecommunication being loaded into this most a branch of target light wave,
Obtain this target light signal.
Should be understood that in embodiments of the present invention, at transmission wavelength and self light wave of the light source of network node
Download module is downloaded wavelength and is differed, and the light source of network node send the upper of wavelength and this network node
When the download wavelength of the one light wave download module jumping network node is identical, if certain network node needs to connect
Receive the signal that another network node sends, need to receive the next-hop network node of the network node of signal
The network node to sending signal is needed to send light wave, in order to send the network node self of signal
After the signal of telecommunication is loaded on this light wave, it is sent to this network node needing to receive signal.
Especially, needing to receive the upper hop net that network node is the network node sending signal of signal
During network node, the network node of transmission signal needs light wave and this node sent by other network nodes
The light wave that light source sends is coupled in optical transmission medium, in order to the Electro-optical Modulation module of this node is by telecommunications
Number it is loaded on these light waves so that need the network node receiving signal to be able to receive that signal.
In embodiments of the present invention, alternatively, needing to send the first coupled mode of the network node of signal
The light wave that other network nodes in addition to this network node in this optical ring network are sent by block and self light
When the light wave coupling that source sends exports in optical transmission medium, the light wave download module of this network node, from
Light wave after this coupling is downloaded the light wave that the next-hop network node of this network node sends, remaining light
Ripple arrives the Electro-optical Modulation module of this network node by optical transmission medium.
In embodiments of the present invention, alternatively, as shown in Figure 4, this second optical transmission medium 220 with should
4th optical transmission medium 240 is same optical transmission medium, and this light wave download module 110 is by the 6th light
Transmission medium 260 is connected with this first coupling module 140, this first coupling module 140 by this second
Optical transmission medium 220 is connected with this Electro-optical Modulation module 120；
This light wave download module 110, for this ring light of transmission from this first optical transmission medium 210
Downloading the 5th light wave in the light wave that in network, other network nodes in addition to this network node send, this is the years old
Five light waves are the light wave of the next-hop network node transmission of this network node；
6th light wave arrives this first coupling module 140 through the 6th optical transmission medium 260, and the 6th
Light wave is to remove the 5th light wave in the light wave that this other network node in addition to this network node sends
After residue light wave.
This first coupling module 140, for coupling the light wave that the 6th light wave sends with this light source 130
Become this most a branch of target light wave；
This most a branch of target light wave arrives this Electro-optical Modulation module through this second optical transmission medium 220
120；
This Electro-optical Modulation module 120, for this signal of telecommunication being loaded into this most a branch of target light wave,
Obtain this target light signal.
In embodiments of the present invention, alternatively, as it is shown in figure 5, this Electro-optical Modulation module 120 includes 1
Individual or multiple first electrooptic modulators 121 connected in series；
Each electrooptic modulator in this one or more the first electrooptic modulator 121 connected in series, uses
In the modulating wave that this signal of telecommunication is loaded into this most a branch of target light wave medium wavelength and this electrooptic modulator
On long identical light wave.
Specifically, when this Electro-optical Modulation module 120 includes first electrooptic modulator 121, should
First electrooptic modulator 121 is broad band electrooptic modulator, this first electrooptic modulator 121 to this at least one
All light waves in bundle target light wave are modulated.Include that multiple serial is even in this Electro-optical Modulation module 120
During the first electrooptic modulator 121 connect, light wave to be modulated passes sequentially through each first electricity connected in series
Photomodulator 121, the light wave of one or more wavelength can be carried out by each first electrooptic modulator 121
Modulation, this first electrooptic modulator 121 can be arrowband or broadband electrooptic modulator, the present invention
This is not construed as limiting.
In embodiments of the present invention, alternatively, as shown in Figure 6, this Electro-optical Modulation module 120 includes one
Individual wavelength division multiplexer 122, M-1 the second electrooptic modulator 123 and second coupling module 124；
This wavelength division multiplexer 122, for inputting the every Shu Guangbo in this most a branch of target light wave to being somebody's turn to do
In the second target electrooptic modulator in M-1 the second electrooptic modulator 123；
Each electrooptic modulator in this second target electrooptic modulator, for being loaded into defeated by this signal of telecommunication
Enter to the light wave of this electrooptic modulator, obtain the optical signal corresponding with this electrooptic modulator；
This second coupling module 124, being used for will be with each Electro-optical Modulation in this second target electrooptic modulator
The optical signal that device is corresponding is coupled into this target light signal.
Specifically, each output port of wavelength division multiplexer 122 and second electrooptic modulator 123
Input port be connected, when the node sending signal sends broadcast singal, a branch of light wave is multiple through wavelength-division
Light wave is restrainted, every Shu Guangbo output port by wavelength division multiplexer 122 with being divided into M-1 after device 122
Entering in the second electrooptic modulator 123 of correspondence, M-1 bundle light wave can be modulated simultaneously, modulation
After obtain M-1 restraint optical signal, the second coupling module by this M-1 bundle optical signal be coupled to optical transmission medium
In, in order to other network nodes can successfully receive the optical signal corresponding with self.
Should be understood that wavelength division multiplexer will enter into this ripple when the node sending signal sends multicast signals
The light wave of every Shu Butong separately, is input to corresponding with this light wave by the Different lightwave in the light wave of division multiplexer
Electrooptic modulator in.
Should be understood that when the structure of Electro-optical Modulation module is the structure shown in Fig. 5 or Fig. 6, send signal
Network node can optionally send a signal in optical ring network one or more networks joint
Point, and can realize different network nodes is sent different signals.
In embodiments of the present invention, alternatively, as it is shown in fig. 7, this Electro-optical Modulation module 120 includes one
Individual wavelength-selective switches 125, at least one the 3rd electrooptic modulator 126 and the 3rd coupling module
127；
This wavelength-selective switches 125, for being input to this at least one the by this most a branch of target light wave
In the 3rd target modulation device in three electrooptic modulators 126；
Each electrooptic modulator in 3rd target modulation device, for being loaded into input extremely by this signal of telecommunication
On the light wave of this electrooptic modulator, obtain the optical signal corresponding with this electrooptic modulator；
3rd coupling module 127, being used for will be with each Electro-optical Modulation in the 3rd target electrooptic modulator
The optical signal that device is corresponding is coupled into this target light signal.
Specifically, wavelength-selective switches 125 is by the most a branch of target of input to this wavelength-selective switches
Light wave exports at least one the 3rd electrooptic modulator 126 being connected with this wavelength-selective switches, receives
The signal of telecommunication is loaded on the light wave received by the electrooptic modulator to target light wave, obtains optical signal, the
The optical signal coupling that different electrooptic modulators are obtained by three coupling modules 127 inputs to optical transmission medium,
So that the network node receiving signal can be properly received the optical signal corresponding with this node.
In embodiments of the present invention, alternatively, the number of the 3rd electrooptic modulator 126 can less than or etc.
In the number of the output port of this wavelength-selective switches 125, Electro-optical Modulation can be configured according to actual needs
The number of device, this is not construed as limiting by the present invention.
In embodiments of the present invention, it is preferable that this at least one the 3rd electrooptic modulator 126 is broadband electricity
Photomodulator, such as, can be MZI modulator, electric absorption type electrooptic modulator, but the present invention is not
It is limited to this.
In embodiments of the present invention, alternatively, when this network node 100 has the structure shown in Fig. 2,
This light wave download module 110 is wavelength division multiplexer, and as shown in Figure 8, this Electro-optical Modulation module 120 includes
M-1 the 4th electrooptic modulator 128；
This wavelength division multiplexer, adjusts for this most a branch of target light wave is input to this M-1 the 4th electric light
In the 4th target electrooptic modulator in device 128 processed；
Each electrooptic modulator in 4th target modulation device, for being loaded into input extremely by this signal of telecommunication
On the light wave of this electrooptic modulator.
In embodiments of the present invention, in the 4th target electrooptic modulator each electrooptic modulator by the signal of telecommunication
It is loaded into and inputs to the light wave of this electrooptic modulator, obtain the optical signal corresponding with this electrooptic modulator,
The optical signal corresponding with each electrooptic modulator is coupled into target light signal through the first coupling module 140.
In embodiments of the present invention, when Electro-optical Modulation module 120 uses the structure shown in Fig. 8, network
Node has simpler structure, lower cost of manufacture, and the decay causing optical signal is less.
In embodiments of the present invention, alternatively, this light wave download module 110 is drop filters.
In embodiments of the present invention, alternatively, light source 130 is multi wave length illuminating source.
In embodiments of the present invention, alternatively, as it is shown in figure 9, network node 100 also includes: light is put
Big module 150, for carrying out attenuation compensation to this target light signal.
Should be understood that in embodiments of the present invention, light amplification module 150 can be arranged within network nodes
After Electro-optical Modulation module, after can being arranged on light wave download module, light amplification module 150 is all right
Putting setting between two network nodes, this is not construed as limiting by the present invention.
In embodiments of the present invention, alternatively, this light amplification module 150, it is also possible to for other are saved
The optical signal that point sends carries out attenuation compensation, and this is not construed as limiting by the present invention.
In embodiments of the present invention, alternatively, this light amplification module 150 can be image intensifer, but this
Invention is not limited to this.
Describe network node according to embodiments of the present invention in detail above in association with Fig. 1 to Fig. 9, below will
The embodiment of the present invention is described in detail, it should be noted that these examples are intended merely to help this in conjunction with specific example
Skilled person is more fully understood that the embodiment of the present invention, and the scope of the unrestricted embodiment of the present invention.
Figure 10 is the schematic knot of the network node in the optical ring network that another embodiment of the present invention provides
Composition.As shown in Figure 10, this network node 200 includes: light transmitting device 210 and functional unit 220；
This light transmitting device 210 includes:
Drop filters 211, for downloading the light wave of setted wavelength；
Detector 212, for being converted to the signal of telecommunication by the light wave that drop filters 211 is downloaded；
Electro-optical Modulation module 213, sends to present networks joint for the signal of telecommunication is loaded into other network nodes
The light wave of point；
Light source 214, sends light wave to other network nodes；
Bonder (multiplexer) 215, for the light wave sent by the light source 214 of this node with through electricity
Light wave after optical modulator module 213 modulation is coupled in optical transmission medium.
The light wave that should be understood that the setted wavelength that drop filters 211 downloads is through other network nodes
Light wave after modulation.
Figure 11 is another signal of the network node in the optical ring network that another embodiment of the present invention provides
Property structure chart.As shown in figure 11, this network node 300 includes: light transmitting device 310 and function list
Unit 320；
This light transmitting device 310 includes:
Light source 311, is used for sending light wave；
Bonder (multiplexer) 312, for by optical ring network other nodes send light wave with
The light wave that light source 311 sends is coupled in optical transmission medium；
Drop filters 313, for downloading the light wave of setted wavelength；
Detector 314, is the signal of telecommunication for the light wave downloaded by drop filters 313；
Electro-optical Modulation module 315, for being loaded into the light wave after drop filters 33 by the signal of telecommunication
On, obtain optical signal.
Should be understood that the light wave of the setted wavelength that drop filters 313 downloads is probably without modulation
Light wave, it is also possible to the light wave after other network nodes are modulated.
Figure 12 is another signal of the network node in the optical ring network that another embodiment of the present invention provides
Property structure chart.As shown in figure 12, this network node 400 includes: light transmitting device 410 and function list
Unit 420；
This light transmitting device 410 includes:
Drop filters 411, for downloading the light wave of setted wavelength；
Detector 412, for being converted into the signal of telecommunication by the light wave that drop filters 411 is downloaded；
Light source 413, is used for sending light wave；
Bonder (multiplexer) 414, for by through the light wave of drop filters 411 and light source 413
The light wave sent is coupled in optical transmission medium；
Electro-optical Modulation module, for being loaded into the light after bonder (multiplexer) 413 by the signal of telecommunication
On ripple, obtain optical signal.
Should be understood that the light wave of the setted wavelength that drop filters 411 downloads is probably without modulation
Light wave, it is also possible to the light wave after other network nodes are modulated.
Should be understood that the Electro-optical Modulation module in the network node shown in Figure 10 to Figure 12 can use figure
Any one structure in the structure of the Electro-optical Modulation module shown in 5 to Fig. 7, the network shown in Figure 10
The structure of the Electro-optical Modulation module in node can also use the structure of the Electro-optical Modulation module shown in Fig. 8.
Below by as a example by the optical ring network shown in Figure 13 and the network node shown in Figure 10, retouch in detail
State embodiments of the invention.In the optical ring network shown in Figure 13, N1 to N4 represents one respectively
Network node as shown in Figure 10, each network node gives a ripple different from other network nodes
Long, as the wavelength of light source and the download wavelength of drop filters of this each network node.Due to it
The light wave that his network node sends over comprises multiple optical wavelength, thus Electro-optical Modulation module 213 need right
Multiple optical wavelength can realize modulation, can use the manipulator such as MZI modulator in broadband, electric absorption
Type electrooptic modulator etc..
For each network node, the light wave of the setted wavelength that light source sends will be without modulating direct coupling
Close in loop network, as the carrier wave of other network node Electro-optical Modulation modules.When a network node
Electro-optical Modulation module when not working, this light wave will enter next net directly by this network node
Network node.Therefore each network node in loop network can receive other network nodes and is transmitted across
The light wave come.When a network node needs to send broadcast singal, the most permissible by modulating these light waves
Realizing the transmission of broadcast singal, the broadcast singal of final corresponding each network node setted wavelength will be by this
The detector of node receives.
As a example by other nodes send broadcast singal, its operation principle is told about below by node N1.
Assuming that network node N1 gives the wavelength of λ 1, network node N2 gives the wavelength of λ 2, network
Node N3 gives the wavelength of λ 3, and network node N4 gives the wavelength of λ 4.Network node N2, N3,
The light source of N4 send respectively λ 2, λ 3 and λ 4 light wave in optical ring network, due to network node N3
Broadcast singal, the then light that wavelength is λ 2 that network node N2 sends the most or not with network node N4
Ripple through network node N3 and network node N4 laggard enter network node N1, network node N3 send
The light wave that wavelength is λ 3 through network node N4 laggard enter network node N1, network node N4 send out
The wavelength sent be the light wave of λ 4 be directly entered network node N1, λ 2, λ 3 and λ 4 light wave through network
After drop filters 211 in node N1 node, owing to not being the setted wavelength of N1, directly lead to
Cross, enter in the Electro-optical Modulation module 213 of network node N1, as Electro-optical Modulation module 213
Light wave to be modulated.So, network node N1 can send broadcast electrical signal to Electro-optical Modulation module 213
In, Electro-optical Modulation module 213 signal of telecommunication of broadcast is modulated at wavelength be λ 2, on the light wave of λ 3, λ 4,
Enter after bonder (multiplexer) 215 in the optical transmission medium of optical ring network.
Wherein comprise the light wave that wavelength is λ 2 drop filters through network node N2 of broadcast singal
After, received by the detector of network node N2, and be converted to the signal of telecommunication, thus network node N2 connects
Receive the broadcast singal that network node N1 sends over.Comprise the light wave warp that wavelength is λ 3 of broadcast singal
After crossing the drop filters of network node N2 and network node N3, by the detection of network node N3
Device receives.Comprise the light wave that wavelength is λ 4 of broadcast singal through network node N2, network node N3
And after the drop filters of network node N4, received by the detector of network node N4.So,
Network node N2, network node N3, network node N4 have received what network node N1 sent
Broadcast singal.
Should be understood that operation principle and the network shown in Figure 10 of the network node shown in Figure 11 and Figure 12
The operation principle of node is substantially identical, for simplicity, does not repeats them here.
Should also be understood that the light transmitting device in the network node of the embodiment of the present invention can also be with other networks
Such as connected applications such as grid mesh network, star networks, this is not construed as limiting by the present invention.
Therefore, the wavelength of the light source that the all-network node in the optical ring network of the embodiment of the present invention includes
Difference, and the reception wavelength of all-network node is different, the simple in construction of network node, cost of manufacture is low,
Decay to optical signal is little.
Should be understood that during description is in the whole text that " embodiment " or " embodiment " mentioned means and implement
Relevant special characteristic, structure or the characteristic of example is included at least one embodiment of the present invention.Therefore,
Phase is not necessarily referred in " in one embodiment " or " in one embodiment " that entire disclosure occurs everywhere
Same embodiment.Additionally, these specific features, structure or characteristic can combine in any suitable manner
In one or more embodiments.
In various embodiments of the present invention, it should be appreciated that the size of the sequence number of above-mentioned each process is not intended to
The priority of execution sequence, the execution sequence of each process should determine with its function and internal logic, and should not
The implementation process of the embodiment of the present invention is constituted any restriction.
It addition, the terms " system " and " network " are the most often used interchangeably.Should be understood that this
Term "and/or" in literary composition, a kind of incidence relation describing affiliated partner, expression can exist three kinds
Relation, such as, A and/or B, can represent: individualism A, there is A and B simultaneously, individually deposit
In B these three situation.It addition, character "/" herein, typically represent forward-backward correlation to as if a kind of "or"
Relation.
In embodiment provided herein, it should be appreciated that " B corresponding with A " represents B and A
It is associated, may determine that B according to A.It is also to be understood that determine that B is only not meant to according to A
B is determined, it is also possible to determine B according to A and/or out of Memory according to A.
Those of ordinary skill in the art are it is to be appreciated that combine each of the embodiments described herein description
The unit of example and algorithm steps, it is possible to come real with electronic hardware, computer software or the combination of the two
Existing, in order to clearly demonstrate the interchangeability of hardware and software, the most according to function one
As property describe composition and the step of each example.These functions are held with hardware or software mode actually
OK, application-specific and the design constraint of technical scheme are depended on.Professional and technical personnel can be to each
Specifically should be used for using different methods to realize described function, but this realization is it is not considered that surpass
Go out the scope of the present invention.
Those skilled in the art is it can be understood that arrive, and for convenience and simplicity of description, above-mentioned retouches
The specific works process of system, device and the unit stated, is referred to the correspondence in preceding method embodiment
Process, does not repeats them here.
In several embodiments provided herein, it should be understood that disclosed system, device and
Method, can realize by another way.Such as, device embodiment described above is only shown
Meaning property, such as, the division of described unit, be only a kind of logic function and divide, actual can when realizing
There to be other dividing mode, the most multiple unit or assembly can in conjunction with or be desirably integrated into another
System, or some features can ignore, or do not perform.Another point, shown or discussed each other
Coupling direct-coupling or communication connection can be the INDIRECT COUPLING by some interfaces, device or unit
Or communication connection, can be electrical, machinery or other form.
The described unit illustrated as separating component can be or may not be physically separate, makees
The parts shown for unit can be or may not be physical location, i.e. may be located at a place,
Or can also be distributed on multiple NE.Can select according to the actual needs part therein or
The whole unit of person realizes the purpose of the present embodiment scheme.
It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit
In, it is also possible to it is that unit is individually physically present, it is also possible to two or more unit are integrated in one
In individual unit.
If integrated unit realizes using the form of SFU software functional unit and as independent production marketing or
During use, can be stored in a computer read/write memory medium.Based on such understanding, this
Part that prior art is contributed by bright technical scheme the most in other words or this technical scheme
Part can embody with the form of software product, and this computer software product is stored in a storage and is situated between
In matter, including some instructions with so that computer equipment (can be personal computer, server,
Or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And it is front
The storage medium stated includes: USB flash disk, portable hard drive, read only memory (Read-Only Memory, letter
Be referred to as " ROM "), random access memory (Random Access Memory, referred to as " RAM "),
The various medium that can store program code such as magnetic disc or CD.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to
In this, any those familiar with the art, can be easily in the technical scope that the invention discloses
Expect change or replace, all should contain within protection scope of the present invention.Therefore, the protection of the present invention
Scope should be as the criterion with described scope of the claims.
Claims (12)
1. the network node in optical ring network, described optical ring network includes M network node,
M is the integer more than or equal to 2, it is characterised in that each network in described M network node
Node includes that the wavelength of the light source of light source and described M network node is different, described M network node
Reception wavelength different, described network node includes:
Light wave download module (110), Electro-optical Modulation module (120), light source (130), the first coupled mode
Block (140)；
Described light wave download module (110), for the light of transmission from the first optical transmission medium (210)
Ripple is downloaded the first light wave；
Described Electro-optical Modulation module (120), for being loaded into the second optical transmission medium (220) by the signal of telecommunication
On the most a branch of target light wave of middle transmission, obtain target light signal, the most a branch of described target light wave bag
Include the most a branch of light wave in the light wave of transmission in described first optical transmission medium (210)；
Described light source (130), is used for by the 3rd optical transmission medium (230) to described first coupled mode
Block (140) sends light wave；
Described first Coupler Module (140), for the light wave coupling sent by described light source (130)
In the 4th optical transmission medium (240).
Network node the most according to claim 1, it is characterised in that described light wave download module
(110) it is connected with described Electro-optical Modulation module (120) by described second optical transmission medium (220),
Described Electro-optical Modulation module (120) is by the 5th optical transmission medium (250) and described first coupling module
(140) it is connected；
The most a branch of target light wave arrives described second optical transport through described light wave download module (110)
Medium (220), the most a branch of described target light wave be in described optical ring network in addition to described network node
At least one other network node send light wave；
The most a branch of described target light wave arrives described electric light through described second optical transmission medium (220)
Modulation module (120)；
Described Electro-optical Modulation module (120), the most a branch of target described in the described signal of telecommunication is loaded into
On light wave, obtain described target light signal；
Described target light signal arrives described first coupled mode through described 5th optical transmission medium (250)
Block (140)；
Described first coupling module (140), for by described target light signal and described light source (130)
The light wave sent is coupled in described 4th optical transmission medium (240).
Network node the most according to claim 1, it is characterised in that described first optical transport is situated between
Matter (210) and described 4th optical transmission medium (240) are same optical transmission medium, described first coupling
Compound module (140) is by described 4th optical transmission medium (240) and described light wave download module (110)
Being connected, described light wave download module (110) is by described second optical transmission medium (220) and described electricity
Optical modulator module (120) is connected；
Described first coupling module (140), for by described optical ring network in addition to described network node
The light wave that sends of other network nodes light wave and the described light source (130) that send be coupled into the 3rd light wave；
Described 3rd light wave arrives described light wave download module through described 4th optical transmission medium (240)
(110)；
Described light wave download module (110) is for downloading the 4th light wave from described 3rd light wave, described
4th light wave is the light wave of the next-hop network node transmission of described network node；
The most a branch of target light wave arrives described Electro-optical Modulation through described second optical transmission medium (220)
Module (120), the most a branch of described target light wave be described 3rd light wave removes described 4th light wave after
Residue light wave；
Described Electro-optical Modulation module (120), the most a branch of target described in the described signal of telecommunication is loaded into
On light wave, obtain described target light signal.
Network node the most according to claim 1, it is characterised in that described second optical transport is situated between
Matter (220) and described 4th optical transmission medium (240) are same optical transmission medium, under described light wave
Carry module (110) by the 6th optical transmission medium (260) and described first coupling module (140) phase
Even, described first coupling module (140) is by described second optical transmission medium (220) and described electric light
Modulation module (120) is connected；
Described light wave download module (110), for transmitting from described first optical transmission medium (210)
Described optical ring network in the light wave that sends of other network nodes in addition to described network node under
Carrying the 5th light wave, described 5th light wave is the light wave of the next-hop network node transmission of described network node；
6th light wave arrives described first coupling module (140) through described 6th optical transmission medium (260),
Described 6th light wave is to remove in the light wave that described other network nodes in addition to described network node send
Remove the residue light wave after described 5th light wave；
Described first coupling module (140), for sending out described 6th light wave with described light source (130)
The light wave sent be coupled into described in the most a branch of target light wave；
The most a branch of described target light wave arrives described electric light through described second optical transmission medium (220)
Modulation module (120)；
Described Electro-optical Modulation module (120), the most a branch of target described in the described signal of telecommunication is loaded into
On light wave, obtain described target light signal.
Network node the most according to any one of claim 1 to 4, it is characterised in that described
Electro-optical Modulation module (120) includes one or more the first electrooptic modulators (121) connected in series；
Each Electro-optical Modulation in one or more first electrooptic modulators (121) connected in series described
Device, the most a branch of target light wave medium wavelength and this electrooptic modulator described in the described signal of telecommunication is loaded into
The identical light wave of modulation wavelength on.
Network node the most according to any one of claim 1 to 4, it is characterised in that described
Electro-optical Modulation module (120) includes a wavelength division multiplexer (122), M-1 the second electrooptic modulator
(123) and one the second coupling module (124)；
Described wavelength division multiplexer (122), for by defeated for the every Shu Guangbo in the most a branch of described target light wave
Enter in the second target electrooptic modulator to described M-1 the second electrooptic modulator (123)；
Each electrooptic modulator in described second target electrooptic modulator, for loading the described signal of telecommunication
On to input to the light wave of this electrooptic modulator, obtain the optical signal corresponding with this electrooptic modulator；
Described second coupling module (124), being used for will be with each electricity in described second target electrooptic modulator
The optical signal that photomodulator is corresponding is coupled into described target light signal.
Network node the most according to any one of claim 1 to 4, it is characterised in that described
Electro-optical Modulation module (120) includes that a wavelength-selective switches (125), at least one the 3rd electric light are adjusted
Device processed (126) and the 3rd coupling module (127)；
Described wavelength-selective switches (125), described in the most a branch of described target light wave is input to extremely
In the 3rd target modulation device in few 3rd electrooptic modulator (126)；
Each electrooptic modulator in described 3rd target modulation device, for being loaded into defeated by the described signal of telecommunication
Enter to the light wave of this electrooptic modulator, obtain the optical signal corresponding with this electrooptic modulator；
Described 3rd coupling module (127), being used for will be with each electricity in described 3rd target electrooptic modulator
The optical signal that photomodulator is corresponding is coupled into described target light signal.
Network node the most according to claim 2, it is characterised in that described light wave download module
(110) being wavelength division multiplexer, described Electro-optical Modulation module (120) includes M-1 the 4th Electro-optical Modulation
Device (128)；
Described wavelength division multiplexer, for being input to described M-1 the 4th by the most a branch of described target light wave
In the 4th target electrooptic modulator in electrooptic modulator (128)；
Each electrooptic modulator in described 4th target modulation device, for being loaded into defeated by the described signal of telecommunication
Enter to the light wave of this electrooptic modulator.
Network node the most according to any one of claim 1 to 7, it is characterised in that described
Light wave download module (110) is drop filters.
Network node the most according to any one of claim 1 to 9, it is characterised in that described
Light source (130) is multi wave length illuminating source.
11. network nodes according to any one of claim 1 to 10, it is characterised in that institute
Stating the first coupling module (140) is bonder or wavelength division multiplexer.
12. according to the network node according to any one of claim 1 to 11, it is characterised in that institute
State network node also to include:
Light amplification module (150), for carrying out attenuation compensation to described target light signal.
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Effective date of registration: 20200703 Address after: 518000 Baoan District Xin'an street, Shenzhen, Guangdong, No. 625, No. 625, Nuo platinum Plaza, Patentee after: SHENZHEN SHANGGE INTELLECTUAL PROPERTY SERVICE Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. Effective date of registration: 20200703 Address after: 430000 room 01, 2nd floor, building 15, Dingjie modern electromechanical information Incubation Park, 219 Guanggu 2nd Road, Donghu New Technology Development Zone, Wuhan, Hubei Province Patentee after: ANEWCOM, Inc. Address before: 518000 Baoan District Xin'an street, Shenzhen, Guangdong, No. 625, No. 625, Nuo platinum Plaza, Patentee before: SHENZHEN SHANGGE INTELLECTUAL PROPERTY SERVICE Co.,Ltd. |