CN104297852B - Based on single wavelength-selective switches enter to have more optical node and its implementation more - Google Patents
Based on single wavelength-selective switches enter to have more optical node and its implementation more Download PDFInfo
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- CN104297852B CN104297852B CN201410536487.5A CN201410536487A CN104297852B CN 104297852 B CN104297852 B CN 104297852B CN 201410536487 A CN201410536487 A CN 201410536487A CN 104297852 B CN104297852 B CN 104297852B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
- G02B6/2938—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM
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Abstract
The invention discloses a kind of enter to have more optical node and its implementation based on single wavelength-selective switches more, it is related to optical device and light exchanges field, this enters to have more optical node and include photoswitch, n × L circulator, a 1 × L of the n port number for L more2Wavelength-selective switches, a grating, a light amplification and switching lens combination and a wavelength-selective switches chip, n, L are positive integer, and n >=2, L >=2,1. each photoswitch is connected with the port of L circulator respectively, the port of each circulator 2. respectively with 1 × L2The corresponding entry port of wavelength-selective switches is connected.The present invention only need to use a 1 × L2Wavelength-selective switches, can be achieved with entering to have more optical node on the basis of existing single device, simple structure more, and portfolio is not required to the number for increasing line side module slot when expanding, can effectively reduce the cost of equipment.
Description
Technical field
The present invention relates to optical device and light exchange field, be specifically related to a kind of based on single wavelength-selective switches enter
Have more optical node and its implementation.
Background technology
Currently, ASON can fully excavate the bandwidth potential of optical-fiber network, directly generate all kinds of new industry in area of light
Business, meets diversified, personalized user's request, and the therefore development of ASON gets most of the attention.ASON is mainly
It is made up of a series of system equipments with high degree of flexibility.ROADM(Reconfiguration Optical Add-Drop
Multiplexer, ROADM) be ASON node main implementation technique, ROADM technology provide
Node remote control re-configurability, it is possible to achieve the regulation of the intelligent wavelength level of node.It is current ROADM using discretization device
A kind of conventional way of realization in node.
Existing wavelength-selective switches are mainly 1 × N wavelength selecting switch, and N is positive integer, 1 × N wavelength selecting switch
Incident unit has an incident light port, outgoing unit to have N number of outgoing optical port.Generally use multiple 1 × N wavelength selecting switch
Interconnect to build node, to realize that the route switching of unlike signal is selected.When the network traffic increases, often by increase
The quantity of 1 × N wavelength selecting switch, increases the ability of operation exchange in node, the module and slot count in existing equipment
Mesh is multiplied, and causes the cost of equipment to significantly improve.With being continuously increased for portfolio, the cost of equipment is also constantly increasing
Plus.
The application for a patent for invention of Application No. 201380000472.0 discloses a kind of node apparatus, and the node apparatus are used
Two wavelength variable N × N wavelength selecting switch, select to open due to seldom selling wavelength variable N × N wavelength on market
Close, the price of wavelength variable N × N wavelength selecting switch is higher, and therefore the cost of equipment is still higher.
Content of the invention
The invention aims to overcoming the shortcomings of above-mentioned background technology, there is provided a kind of based on single wavelength-selective switches
Enter to have more optical node and its implementation more, it is only necessary to using a 1 common × L2Wavelength-selective switches, existing single
Can be achieved with entering to have more optical node on the basis of device, simple structure, when portfolio expands, it is not necessary to increase circuit side form more
The number of block slot, can effectively reduce the cost of equipment.
Present invention offer is a kind of to be entered to have more optical node based on single wavelength-selective switches more, including n port number for L's
Photoswitch, n, L are positive integer, and n >=2, L >=2, described enter have more optical node also include n × L circulator, one 1 ×
L2Wavelength-selective switches, a grating, a light amplification and switching lens combination and a wavelength-selective switches chip, each ring
Shape device include port 1., port 2., port 3., 1. each photoswitch is connected with the port of L circulator respectively, each annular
The port of device 2. respectively with 1 × L2The corresponding entry port of wavelength-selective switches is connected；Optical signal is from the port of each circulator
1. the circulator is entered, then from the 2. outgoing of the port of the circulator, 1 × L is entered2The corresponding incidence end of wavelength-selective switches
Mouthful, from the 1 × L2After wavelength-selective switches outgoing, grating is first passed through, then through light amplification and switching lens combination, be accumulated
To on wavelength-selective switches chip, diverse location arrangement is pressed on wavelength-selective switches chip.
On the basis of above-mentioned technical proposal, when n=2, L=2, described enter have more optical node include 2 photoswitches, 4
Individual circulator, 1 × 4 wavelength-selective switches, a grating, a light amplification and switching lens combination and a wavelength are selected
Switch chip, each photoswitch have 2 ports, each photoswitch to be 1. connected with the port of 2 circulators respectively, each circulator
Port be 2. connected to the corresponding entry port of 1 × 4 wavelength-selective switches respectively；
Two beam incident lights select to enter from 4 ports of 1 × 4 wavelength-selective switches, and the light of different wave length is from 1 × 4 ripple
After long selecting switch outgoing, grating is first passed through, then through light amplification and switching lens combination, be accumulated wavelength-selective switches
On chip, diverse location arrangement is pressed on wavelength-selective switches chip；
When processing coherent light communication signal, 1 × 4 wavelength-selective switches chip is processed to optical signal：Select intersect or
Person blocks, then through light amplification and switching lens combination, then through grating, by 4 ports of 1 × 4 wavelength-selective switches
In any one port return to the port of circulator corresponding with the port 2., finally from the 3. outgoing of the port of the circulator,
So as to realize selection and the routing function of optical signal.
On the basis of above-mentioned technical proposal, n=4, during L=4, described enter have more optical node include 4 photoswitches, 16
Individual circulator, 1 × 16 wavelength-selective switches, a grating, a light amplification and switching lens combination and a wavelength choosing
Switch chip is selected, each photoswitch has 4 ports, each photoswitch to be 1. connected with the port of 2 circulators respectively, each annular
2. the port of device is connected to the corresponding entry port of 1 × 16 wavelength-selective switches respectively；
1. optical signal enters the circulator from the port of each circulator, then from the 2. outgoing of the port of the circulator, from
The port of each shape device 2. outgoing optical signal enter 1 × 16 wavelength-selective switches corresponding entry port, the light of different wave length
From after 1 × 16 wavelength-selective switches outgoing, grating is first passed through, then through light amplification and switching lens combination, be accumulated ripple
On long selecting switch chip, open by diverse location arrangement on wavelength-selective switches chip；
When processing coherent light communication signal, 1 × 16 wavelength-selective switches chip is processed to optical signal：Select intersect or
Person blocks, and then through light amplification and switching lens combination, then through grating, is held by 16 of 1 × 16 wavelength-selective switches
In mouthful, 2. any one port returns to the port of circulator corresponding with the port, finally 3. goes out from the port of the circulator
Penetrate, so as to realize selection and the routing function of optical signal.
On the basis of above-mentioned technical proposal, n=L2When, described enter to have more optical node and include L more2Individual photoswitch, L2Individual ring
Shape device, a 1 × L2Wavelength-selective switches, a grating, a light amplification and switching lens combination and a wavelength select to open
Chip is closed, each photoswitch has 1 port, each photoswitch to be 1. connected with the port of corresponding circulator, the end of each circulator
Mouth 2. respectively with 1 × L2The corresponding entry port of wavelength-selective switches is connected；
When processing incoherent optical transmission, the wavelength of different incident lights is different, and the optical signal of different wave length is in 1 × L2Wavelength
Diverse location is located away from selecting switch, and the hot spot for reaching wavelength-selective switches chip is located away from wavelength choosing according to different wave length
The diverse location of switch chip is selected, directly to control difference simultaneously in the regulation of diverse location by wavelength-selective switches chip
Incident wavelength blocked or switched, under conditions of photoswitch is not increased, realize the defeated of arbitrary multichannel optical signal
Enter to process any access port blocking or export, different passages are simultaneously entered when being prevented effectively from coherent light communication
The contingent effects of signal.
On the basis of above-mentioned technical proposal, the wavelength-selective switches are the multiterminal made based on micro-electromechanical system (MEMS)
The wavelength-selective switches of mouth, the wavelength-selective switches of the multiport made based on liquid crystal on silicon LCOS or liquid crystal.
On the basis of above-mentioned technical proposal, the grating is reflective gratings or transmission-type grating.
The present invention also provide above-mentioned enter to have more the implementation method of optical node based on single wavelength-selective switches more, including with
Lower step：
When processing coherent light communication signal, wavelength-selective switches chip is processed to optical signal：Select to intersect or hinder
Disconnected, then through light amplification and switching lens combination, then through grating, by 1 × L2Any one end of wavelength-selective switches
2. mouth returns to the port of circulator corresponding with the port, finally from the 3. outgoing of the port of the circulator, so as to realize that light is believed
Number selection and routing function；By increasing photoswitch, realize that multi-center selection enters the mode of wavelength-selective switches, be added to
Penetrate the independence of adjacent light, so as to realize real relevant entering to have more more；
When processing incoherent optical transmission, the wavelength of different incident lights is different, and the optical signal of different wave length is selected in wavelength
Diverse location is located away from switch, and the hot spot of arrival wavelength-selective switches chip is located away from wavelength according to different wave length and selects to open
The diverse location of chip is closed, is directly come while controlling different to enter in the regulation of diverse location by wavelength-selective switches chip
Ejected wave length is blocked or is switched；Under conditions of photoswitch is not increased, the defeated of arbitrary multichannel optical signal is realized
Enter to process any access port blocking or export, it is to avoid the signal that different passages are simultaneously entered during coherent light communication
Contingent effects.
On the basis of above-mentioned technical proposal, when n=2, L=2, described enter have more optical node include 2 photoswitches, 4
Individual circulator, 1 × 4 wavelength-selective switches, a grating, a light amplification and switching lens combination and a wavelength are selected
Switch chip, each photoswitch have 2 ports, each photoswitch to be 1. connected with the port of 2 circulators respectively, each circulator
Port be 2. connected to the corresponding entry port of 1 × 4 wavelength-selective switches respectively；
Two beam incident lights select to enter from 4 ports of 1 × 4 wavelength-selective switches, and the light of different wave length is from 1 × 4 ripple
After long selecting switch outgoing, grating is first passed through, then through light amplification and switching lens combination, be accumulated wavelength-selective switches
On chip, diverse location arrangement is pressed on wavelength-selective switches chip；
When processing coherent light communication signal, 1 × 4 wavelength-selective switches chip is processed to optical signal：Select intersect or
Person blocks, then through light amplification and switching lens combination, then through grating, by 4 ports of 1 × 4 wavelength-selective switches
In any one port return to the port of circulator corresponding with the port 2., finally from the 3. outgoing of the port of the circulator,
So as to realize selection and the routing function of optical signal.
On the basis of above-mentioned technical proposal, n=4, during L=4, described enter have more optical node include 4 photoswitches, 16
Individual circulator, 1 × 16 wavelength-selective switches, a grating, a light amplification and switching lens combination and a wavelength choosing
Switch chip is selected, each photoswitch has 4 ports, each photoswitch to be 1. connected with the port of 2 circulators respectively, each annular
2. the port of device is connected to the corresponding entry port of 1 × 16 wavelength-selective switches respectively；
1. optical signal enters the circulator from the port of each circulator, then from the 2. outgoing of the port of the circulator, from
The port of each shape device 2. outgoing optical signal enter 1 × 16 wavelength-selective switches corresponding entry port, the light of different wave length
From after 1 × 16 wavelength-selective switches outgoing, grating is first passed through, then through light amplification and switching lens combination, be accumulated ripple
On long selecting switch chip, open by diverse location arrangement on wavelength-selective switches chip；
When processing coherent light communication signal, 1 × 16 wavelength-selective switches chip is processed to optical signal：Select intersect or
Person blocks, and then through light amplification and switching lens combination, then through grating, is held by 16 of 1 × 16 wavelength-selective switches
In mouthful, 2. any one port returns to the port of circulator corresponding with the port, finally 3. goes out from the port of the circulator
Penetrate, so as to realize selection and the routing function of optical signal.
On the basis of above-mentioned technical proposal, n=L2When, described enter to have more optical node and include L more2Individual photoswitch, L2Individual ring
Shape device, a 1 × L2Wavelength-selective switches, a grating, a light amplification and switching lens combination and a wavelength select to open
Chip is closed, each photoswitch has 1 port, each photoswitch to be 1. connected with the port of corresponding circulator, the end of each circulator
Mouth 2. respectively with 1 × L2The corresponding entry port of wavelength-selective switches is connected；
When processing incoherent optical transmission, the wavelength of different incident lights is different, and the optical signal of different wave length is in 1 × L2Wavelength
Diverse location is located away from selecting switch, and the hot spot for reaching wavelength-selective switches chip is located away from wavelength choosing according to different wave length
The diverse location of switch chip is selected, directly to control difference simultaneously in the regulation of diverse location by wavelength-selective switches chip
Incident wavelength blocked or switched, under conditions of photoswitch is not increased, realize the defeated of arbitrary multichannel optical signal
Enter to process any access port blocking or export, different passages are simultaneously entered when being prevented effectively from coherent light communication
The contingent effects of signal.
Compared with prior art, advantages of the present invention is as follows：
Two wavelength variable N × N wavelength choosings used in application for a patent for invention with Application No. 201380000472.0
Select switch to compare, the present invention only needs to the 1 × L common using2Wavelength-selective switches, on the basis of existing single device
Can be achieved with entering to have more optical node, simple structure, when portfolio expands, it is not necessary to increase the number of line side module slot more
Mesh, can effectively reduce the cost of equipment.
Description of the drawings
When Fig. 1 is coherent communication, on the basis of 1 × 4 wavelength-selective switches, realize that 2 enter 2 structural representations for going out optical node
Figure.
Fig. 2 is the follow-up light path schematic diagram of 1 × 4 wavelength-selective switches in Fig. 1.
When Fig. 3 is coherent communication, on the basis of 1 × 16 wavelength-selective switches, realize that 4 enter 4 structures for going out optical node and show
It is intended to.
Fig. 4 is the follow-up light path schematic diagram of 1 × 16 wavelength-selective switches in Fig. 3.
When Fig. 5 is noncoherent communication, n=L2, in 1 × L2On the basis of wavelength-selective switches, realize that K enters to have more optical node
Structural representation.
Fig. 6 is 1 × L in Fig. 52The follow-up light path schematic diagram of wavelength-selective switches.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.
Embodiment of the present invention offer is a kind of to be entered to have more optical node based on single wavelength-selective switches more, including n port
Photoswitch, n × L circulator, a 1 × L of the number for L2Wavelength-selective switches, a grating, a light amplification and switching are thoroughly
Mirror system and a wavelength-selective switches chip, n, L are positive integer, and n >=2, and L >=2, each circulator include port
1., port 2., port 3., 1. each photoswitch is connected with the port of L circulator respectively, and 2. the port of each circulator is distinguished
With 1 × L2The corresponding entry port of wavelength-selective switches is connected；1. optical signal enters the circulator from the port of each circulator,
Then from the 2. outgoing of the port of the circulator, 1 × L is entered2The corresponding entry port of wavelength-selective switches, from the 1 × L2Wavelength is selected
After selecting switch outgoing, grating is first passed through, then through light amplification and switching lens combination, be accumulated wavelength-selective switches chip
On, diverse location arrangement is pressed on wavelength-selective switches chip.
Entering to have more optical node above-mentioned not limited by the species of wavelength-selective switches, for existing any type ripple on the market more
Long selecting switch is all suitable for.Wavelength-selective switches selected by the embodiment of the present invention can be based on MEMS (Micro Electro
Mechanical System, MEMS) wavelength-selective switches of multiport that make, or based on LCOS
The ripple of the multiport that (Liquid Crystal on silicon, liquid crystal on silicon) or liquid crystal (Liquid Crystal) make
Long selecting switch.Grating can be reflective gratings, or transmission-type grating.Wavelength-selective switches chip can be MEMS
Chip, liquid crystal on silicon chip or liquid crystal chip.
The embodiment of the present invention is also provided a kind of above-mentioned to be entered to have more the realization of optical node based on single wavelength-selective switches more
Method, comprises the following steps：
When processing coherent light communication signal, wavelength-selective switches chip is processed to optical signal：Select to intersect or hinder
Disconnected, then through light amplification and switching lens combination, then through grating, by 1 × L2Any one end of wavelength-selective switches
2. mouth returns to the port of circulator corresponding with the port, finally from the 3. outgoing of the port of the circulator, so as to realize that light is believed
Number selection and routing function.
Due to existing 1 × L2Wavelength-selective switches are when the adjacent multichannel of process enters optical signal, it is impossible to solve phase
The contingent effects of co-wavelength, so when coherent light communication is processed, can pass through to increase photoswitch, realize that multi-center selection is entered
The mode of wavelength-selective switches, increases the independence of incident adjacent light, so as to realize real relevant entering to have more more.
In actual applications, entry port can be adjusted accordingly by photoswitch, realizes the flexible of entry port
Change, the mutual channel satellite phenomenon of the optical signal of coherent light communication phase co-wavelength is solved (while several light letters of incidence
Number, in phase co-wavelength, the passage of switching is relatively-stationary phenomenon).
When processing incoherent optical transmission, the wavelength of different incident lights is different, and the optical signal of different wave length is selected in wavelength
Diverse location is located away from switch, and the hot spot of arrival wavelength-selective switches chip is located away from wavelength according to different wave length and selects to open
The diverse location of chip is closed, is directly come while controlling different to enter in the regulation of diverse location by wavelength-selective switches chip
Ejected wave length is blocked or is switched.Therefore, when processing incoherent optical transmission, under conditions of photoswitch is not increased, it becomes possible to
Realize any access port of input processing blocking of arbitrary multichannel optical signal or export, be prevented effectively from relevant
The contingent effects of the signal that different passages are simultaneously entered during optic communication.
It is described in detail below by 3 specific embodiments.
Embodiment 1, n=2, L=2, during coherent communication, on the basis of 1 × 4 wavelength-selective switches, realize that 2 enter 2 and go out light
Node
Shown in Figure 1, when n=2, L=2, embodiment 1 is provided a kind of to be entered to have more based on single wavelength-selective switches more
Optical node, including 2 photoswitches (the first photoswitch and the second photoswitch), 4 circulators, 1 × 4 wavelength-selective switches,
One grating, a light amplification and switching lens combination and a wavelength-selective switches chip, each photoswitch have 2 ports,
Each circulator include port 1., port 2., port 3., 1. each photoswitch is connected with the port of 2 circulators respectively, per
2. the port of individual circulator is connected to the corresponding entry port of 1 × 4 wavelength-selective switches respectively.
Shown in Figure 1,4 ports of 1 × 4 wavelength-selective switches are divided into 2 groups according to port numbers, referring to Fig. 1 in
Dashed rectangle shown in.From the first photoswitch optical signal out, by the port of circulator 1. after by port 2. outgoing, different
The port of circulator optical signal 2. out, respectively enters every group of entry port of 1 × 4 wavelength-selective switches (such as the end in Fig. 1
Mouth 1, port 4) one of them；From the second photoswitch optical signal out, by the port of circulator 1. after 2. gone out by port
Penetrate, respectively enter with another port of every group of entry port of 1 × 4 wavelength-selective switches (such as the port 2, port in Fig. 1
3).
Shown in Figure 2, the follow-up light path of 1 × 4 wavelength-selective switches is：Two beam incident lights are from 1 × 4 wavelength-selective switches
Port 1,2,3,4 in select to enter, the light of different wave length first passes through grating, then from after 1 × 4 wavelength-selective switches outgoing
Through light amplification and switching lens combination, it is accumulated on wavelength-selective switches chip, by not on wavelength-selective switches chip
Arrange with position.From different port while being coherent light communication when the wavelength of incident optical signal is not completely independent, now in ripple
There is overlapping part on long selecting switch chip.
When processing coherent light communication signal, 1 × 4 wavelength-selective switches chip is processed to optical signal：Select intersect or
Person blocks, then through light amplification and switching lens combination, then through grating, by the port of 1 × 4 wavelength-selective switches 1,2,
3rd, 2. any one port returns to the port of circulator corresponding with the port in 4, finally 3. goes out from the port of the circulator
Penetrate, so as to realize selection and the routing function of optical signal.
Embodiment 2, n=4, L=4, during coherent communication, on the basis of 1 × 16 wavelength-selective switches, realize that 4 enter 4 and go out light
Node
Shown in Figure 3, embodiment 2 provide a kind of enter to have more optical node based on single wavelength-selective switches more, including 4
Individual photoswitch, 16 circulators, 1 × 16 wavelength-selective switches, a grating, a light amplification and switching lens combination and
One wavelength-selective switches chip, each photoswitch have 4 ports, each circulator include port 1., port 2., port
3., 1. each photoswitch is connected with the port of 2 circulators respectively, and 2. the port of each circulator is selected with 1 × 16 wavelength respectively
The corresponding entry port for selecting switch is connected.Embodiment 2 is by 16 ports of 1 × 16 wavelength-selective switches according to port number from upper
Be divided into 4 groups under, referring to Fig. 3 in oval part shown in.
The light path of embodiment 2 is basically identical with the light path of embodiment 1, and difference is：Each photoswitch in embodiment 2 has 4
Individual port, embodiment 2 increase by 2 group 1 × 4 of photoswitch on the basis of embodiment 1.
Shown in Figure 3,1. optical signal enters the circulator from the port of each circulator, then from the end of the circulator
Mouthful 2. outgoing, shown in Figure 4, from the phase that the optical signal of the port of each shape device 2. outgoing enters 1 × 16 wavelength-selective switches
Answer the light of entry port, different wave length to first pass through grating from after 1 × 16 wavelength-selective switches outgoing, then through light amplification and
Switching lens combination, is accumulated on wavelength-selective switches chip, opens by diverse location arrangement on wavelength-selective switches chip.
From different port while being coherent light communication when the wavelength of incident optical signal is not completely independent, now in wavelength-selective switches core
There is overlapping part on piece.
When processing coherent light communication signal, 1 × 16 wavelength-selective switches chip is processed to optical signal：Select intersect or
Person blocks, and then through light amplification and switching lens combination, then through grating, is held by 16 of 1 × 16 wavelength-selective switches
In mouthful, 2. any one port returns to the port of circulator corresponding with the port, finally 3. goes out from the port of the circulator
Penetrate, so as to realize selection and the routing function of optical signal.
Embodiment 3, n=L2, during noncoherent communication, in 1 × L2On the basis of wavelength-selective switches, realize that K enters to have more light section
Point, K are any positive integer
Shown in Figure 5, embodiment 3 provide a kind of enter to have more optical node based on single wavelength-selective switches more, including
L2Individual photoswitch, L2Individual circulator, a 1 × L2Wavelength-selective switches, a grating, a light amplification and switching lens combination
With a wavelength-selective switches chip, each photoswitch has 1 port, each circulator include port 1., port 2., port
3., 1. each photoswitch is connected with the port of corresponding circulator, the port of each circulator 2. respectively with 1 × L2Wavelength selects to open
The corresponding entry port for closing is connected.
Shown in Figure 6, when processing incoherent optical transmission, due to the wavelength of different incident lights different, optical signal 1 ×
L2Diverse location is located away from wavelength-selective switches, and the hot spot for reaching wavelength-selective switches chip is located away from according to different wave length
The diverse location of wavelength-selective switches chip, directly carrys out same time control by wavelength-selective switches chip in the regulation of diverse location
The different incident wavelength of system is blocked or is switched, and under conditions of photoswitch is not increased, can realize arbitrary multichannel
Any access port blocking of the input processing of optical signal is exported, and is prevented effectively from different passages during coherent light communication
The contingent effects of the signal for simultaneously entering.
Embodiment 3 can easily realize that K passage is incident, while any outgoing of multiple passages.K numbers are less than or are equal to
All wavelengths selecting switch port number.When circulator is not used, if wavelength-selective switches have L2Individual port, all incidence ends
Mouth cannot be as exit ports, therefore exit ports number is less than or equal to L2–K.
Except in the case of above coherent light signal, incoherent optical signal, when process has multigroup optical signal of sequential arrangement
During input, the accompanying characteristics of the co-wavelength optical signal for avoiding the need for considering different passages, as long as therefore wavelength-selective switches chip
Switching time less than different entry port optical signals minimum interval, it is also possible under conditions of photoswitch is not increased, realize K
Individual passage is arbitrarily incident, the selection blocking or outgoing of chronological L passage arbitrary port.This is arbitrarily led to realization more
It is the different situation of two classes that road optical signal is simultaneously entered any access port blocking of process or output.
Those skilled in the art can carry out various modifications and variations to the embodiment of the present invention, if these modifications and change
Within the scope of the claims in the present invention and its equivalent technologies, then these modifications and modification are also in protection scope of the present invention for type
Within.
The prior art that the content not described in detail in specification is known to the skilled person.
Claims (10)
1. a kind of enter to have more optical node based on single wavelength-selective switches more, including n port number for L photoswitch, n, L are equal
For positive integer, and n >=2, L >=2, it is characterised in that：During coherent communication, n=L；During noncoherent communication, n=L2；Entering described many more
Going out optical node also includes n × L circulator, a 1 × L2Wavelength-selective switches, a grating, a light amplification and switching are thoroughly
Mirror system and a wavelength-selective switches chip, each circulator include port 1., port 2., port 3., each photoswitch
1. be connected with the port of L circulator respectively, the port of each circulator 2. respectively with 1 × L2Wavelength-selective switches accordingly enter
Penetrate port to be connected；1. optical signal enters the circulator from the port of each circulator, then from the 2. outgoing of the port of the circulator,
Enter 1 × L2The corresponding entry port of wavelength-selective switches, from the 1 × L2After wavelength-selective switches outgoing, grating is first passed through, so
Afterwards through light amplification and switching lens combination, it is accumulated on wavelength-selective switches chip, presses on wavelength-selective switches chip
Diverse location is arranged.
2. enter to have more optical node based on single wavelength-selective switches as claimed in claim 1 more, it is characterised in that：N=2, L
When=2, described enter to have more optical node and include 2 photoswitches, 4 circulators, 1 × 4 wavelength-selective switches, light more
Grid, a light amplification and switching lens combination and a wavelength-selective switches chip, each photoswitch have 2 ports, each light
1. switch is connected with the port of 2 circulators respectively, the port of each circulator phase 2. respectively with 1 × 4 wavelength-selective switches
Entry port is answered to be connected；
Two beam incident lights select to enter from 4 ports of 1 × 4 wavelength-selective switches, and the light of different wave length is selected from 1 × 4 wavelength
After selecting switch outgoing, grating is first passed through, then through light amplification and switching lens combination, be accumulated wavelength-selective switches chip
On, diverse location arrangement is pressed on wavelength-selective switches chip；
When processing coherent light communication signal, 1 × 4 wavelength-selective switches chip is processed to optical signal：Select to intersect or hinder
Disconnected, then through light amplification and switching lens combination, then through grating, by appointing in 4 ports of 1 × 4 wavelength-selective switches
2. meaning a port returns to the port of circulator corresponding with the port, finally from the 3. outgoing of the port of the circulator, so as to
Realize selection and the routing function of optical signal.
3. enter to have more optical node based on single wavelength-selective switches as claimed in claim 1 more, it is characterised in that：N=4, L
When=4, described enter to have more optical node and include 4 photoswitches, 16 circulators, 1 × 16 wavelength-selective switches, light more
Grid, a light amplification and switching lens combination and a wavelength-selective switches chip, each photoswitch have 4 ports, each light
1. switch is connected with the port of 2 circulators respectively, the port of each circulator phase 2. respectively with 1 × 16 wavelength-selective switches
Entry port is answered to be connected；
1. optical signal enters the circulator from the port of each circulator, then from the 2. outgoing of the port of the circulator, each from this
The optical signal of the port of shape device 2. outgoing enters the corresponding entry port of 1 × 16 wavelength-selective switches, the light of different wave length from 1 ×
After 16 wavelength-selective switches outgoing, grating is first passed through, then through light amplification and switching lens combination, be accumulated wavelength selection
On switch chip, open by diverse location arrangement on wavelength-selective switches chip；
When processing coherent light communication signal, 1 × 16 wavelength-selective switches chip is processed to optical signal：Select to intersect or hinder
Disconnected, then through light amplification and switching lens combination, then through grating, by 16 ports of 1 × 16 wavelength-selective switches in
2. any one port returns to the port of circulator corresponding with the port, finally from the 3. outgoing of the port of the circulator, from
And realize selection and the routing function of optical signal.
4. enter to have more optical node based on single wavelength-selective switches as claimed in claim 1 more, it is characterised in that：N=L2
When, described enter to have more optical node and include L more2Individual photoswitch, L2Individual circulator, a 1 × L2Wavelength-selective switches, grating,
One light amplification and switching lens combination and a wavelength-selective switches chip, each photoswitch have 1 port, each photoswitch
1. be connected with the port of corresponding circulator, the port of each circulator 2. respectively with 1 × L2The corresponding incidence of wavelength-selective switches
Port is connected；
When processing incoherent optical transmission, the wavelength of different incident lights is different, and the optical signal of different wave length is in 1 × L2Wavelength is selected
Diverse location is located away from switch, and the hot spot of arrival wavelength-selective switches chip is located away from wavelength according to different wave length and selects to open
The diverse location of chip is closed, is directly come while controlling different to enter in the regulation of diverse location by wavelength-selective switches chip
Ejected wave length is blocked or is switched, and under conditions of photoswitch is not increased, realizes the defeated of arbitrary multichannel optical signal
Enter to process any access port blocking or export, different passages are simultaneously entered when being prevented effectively from coherent light communication
The contingent effects of signal.
5. entering to have more optical node based on single wavelength-selective switches as any one of Claims 1-4, its feature more
It is：The wavelength-selective switches are the wavelength-selective switches of the multiport made based on micro-electromechanical system (MEMS), are based on silicon substrate
The wavelength-selective switches of the multiport that liquid crystal LCOS or liquid crystal make.
6. entering to have more optical node based on single wavelength-selective switches as any one of Claims 1-4, its feature more
It is：The grating is reflective gratings or transmission-type grating.
7. enter to have more the implementation method of optical node based on single wavelength-selective switches as claimed in claim 1, its feature more
It is, comprises the following steps：
When processing coherent light communication signal, wavelength-selective switches chip is processed to optical signal：Select to intersect or block, so
Afterwards through light amplification and switching lens combination, then through grating, by 1 × L2Any one port of wavelength-selective switches returns
Arrive the port of circulator corresponding with the port 2., finally from the 3. outgoing of the port of the circulator, so as to realize the choosing of optical signal
Select and routing function；By increasing photoswitch, realize that multi-center selection enters the mode of wavelength-selective switches, increase incident adjacent
The independence of light, so that realize real relevant entering to have more more；
When processing incoherent optical transmission, the wavelength of different incident lights is different, and the optical signal of different wave length is in wavelength-selective switches
On be located away from diverse location, the hot spot for reaching wavelength-selective switches chip is located away from wavelength-selective switches core according to different wave length
The diverse location of piece, directly to control different incidence waves simultaneously in the regulation of diverse location by wavelength-selective switches chip
Length is blocked or is switched；Under conditions of photoswitch is not increased, the input of arbitrary multichannel optical signal is realized
Manage any access port blocking or export, it is to avoid the adjoint effect of the signal that different passages are simultaneously entered during coherent light communication
Should.
8. enter to have more the implementation method of optical node based on single wavelength-selective switches as claimed in claim 7, its feature more
It is：When n=2, L=2, described enter to have more optical node and include that 2 photoswitches, 4 circulators, 1 × 4 wavelength select to open more
Pass, a grating, a light amplification and switching lens combination and a wavelength-selective switches chip, each photoswitch have 2 ends
Mouthful, 1. each photoswitch is connected with the port of 2 circulators respectively, and 2. the port of each circulator is selected with 1 × 4 wavelength respectively
The corresponding entry port of switch is connected；
Two beam incident lights select to enter from 4 ports of 1 × 4 wavelength-selective switches, and the light of different wave length is selected from 1 × 4 wavelength
After selecting switch outgoing, grating is first passed through, then through light amplification and switching lens combination, be accumulated wavelength-selective switches chip
On, diverse location arrangement is pressed on wavelength-selective switches chip；
When processing coherent light communication signal, 1 × 4 wavelength-selective switches chip is processed to optical signal：Select to intersect or hinder
Disconnected, then through light amplification and switching lens combination, then through grating, by appointing in 4 ports of 1 × 4 wavelength-selective switches
2. meaning a port returns to the port of circulator corresponding with the port, finally from the 3. outgoing of the port of the circulator, so as to
Realize selection and the routing function of optical signal.
9. enter to have more the implementation method of optical node based on single wavelength-selective switches as claimed in claim 7, its feature more
It is：When n=4, L=4, described enter to have more optical node and include that 4 photoswitches, 16 circulators, 1 × 16 wavelength are selected more
Switch, a grating, a light amplification and switching lens combination and a wavelength-selective switches chip, each photoswitch have 4
1. port, each photoswitch are connected with the port of 2 circulators respectively, the port of each circulator 2. respectively with 1 × 16 wavelength
The corresponding entry port of selecting switch is connected；
1. optical signal enters the circulator from the port of each circulator, then from the 2. outgoing of the port of the circulator, each from this
The optical signal of the port of shape device 2. outgoing enters the corresponding entry port of 1 × 16 wavelength-selective switches, the light of different wave length from 1 ×
After 16 wavelength-selective switches outgoing, grating is first passed through, then through light amplification and switching lens combination, be accumulated wavelength selection
On switch chip, open by diverse location arrangement on wavelength-selective switches chip；
When processing coherent light communication signal, 1 × 16 wavelength-selective switches chip is processed to optical signal：Select to intersect or hinder
Disconnected, then through light amplification and switching lens combination, then through grating, by 16 ports of 1 × 16 wavelength-selective switches in
2. any one port returns to the port of circulator corresponding with the port, finally from the 3. outgoing of the port of the circulator, from
And realize selection and the routing function of optical signal.
10. enter to have more the implementation method of optical node based on single wavelength-selective switches as claimed in claim 7, its feature more
It is：N=L2When, described enter to have more optical node and include L more2Individual photoswitch, L2Individual circulator, a 1 × L2Wavelength selects to open
Pass, a grating, a light amplification and switching lens combination and a wavelength-selective switches chip, each photoswitch have 1 end
Mouthful, 1. each photoswitch be connected with the port of corresponding circulator, the port of each circulator 2. respectively with 1 × L2Wavelength selects to open
The corresponding entry port for closing is connected；
When processing incoherent optical transmission, the wavelength of different incident lights is different, and the optical signal of different wave length is in 1 × L2Wavelength is selected
Diverse location is located away from switch, and the hot spot of arrival wavelength-selective switches chip is located away from wavelength according to different wave length and selects to open
The diverse location of chip is closed, is directly come while controlling different to enter in the regulation of diverse location by wavelength-selective switches chip
Ejected wave length is blocked or is switched, and under conditions of photoswitch is not increased, realizes the defeated of arbitrary multichannel optical signal
Enter to process any access port blocking or export, different passages are simultaneously entered when being prevented effectively from coherent light communication
The contingent effects of signal.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1855132A2 (en) * | 2001-03-12 | 2007-11-14 | E.I.Du pont de nemours and company | Trimmable optical add/drop multiplexer devices |
| CN103543497A (en) * | 2013-11-05 | 2014-01-29 | 武汉邮电科学研究院 | Wavelength selection switch device, wavelength switching method for same and communication device |
| CN103604446A (en) * | 2013-11-04 | 2014-02-26 | 清华大学 | Multi-channel fiber bragg grating absolute wavelength demodulation system based on single detector and method thereof |
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| JP2000329964A (en) * | 1999-05-24 | 2000-11-30 | Fujikura Ltd | Frequency band division optical filter with route change- over switch |
| US20100124391A1 (en) * | 2008-11-18 | 2010-05-20 | Mark David Feuer | Growable multi-degree ROADM |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1855132A2 (en) * | 2001-03-12 | 2007-11-14 | E.I.Du pont de nemours and company | Trimmable optical add/drop multiplexer devices |
| CN103604446A (en) * | 2013-11-04 | 2014-02-26 | 清华大学 | Multi-channel fiber bragg grating absolute wavelength demodulation system based on single detector and method thereof |
| CN103543497A (en) * | 2013-11-05 | 2014-01-29 | 武汉邮电科学研究院 | Wavelength selection switch device, wavelength switching method for same and communication device |
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