CN102156330A - Optical switch and method for implementing optical switch - Google Patents
Optical switch and method for implementing optical switch Download PDFInfo
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- CN102156330A CN102156330A CN 201010253587 CN201010253587A CN102156330A CN 102156330 A CN102156330 A CN 102156330A CN 201010253587 CN201010253587 CN 201010253587 CN 201010253587 A CN201010253587 A CN 201010253587A CN 102156330 A CN102156330 A CN 102156330A
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Abstract
The invention discloses an optical switch and a method for implementing the optical switch. The optical switch comprises an N-to-N non-blocking switch matrix, wherein the non-blocking switch matrix comprises N*M nodes; each node comprises four digital optical switch units for performing 2-in 2-out optical path switching; each digital optical switch unit has two statuses; the N*M nodes of the non-blocking switch matrix comprise N input ends and N output ends; and the non-blocking switch matrix is used for receiving N input optical signals input by N input optical fibers at the N input ends, switching the N input optical signals to the N output ends via a predetermined route of the M-level node, and coupling N output optical signals acquired through switching of the non-blocking switching matrix to N output optical fibers at the N output ends. By the optical switch disclosed by the invention, the nodes are easy to control, so the optical switch is suitable for large-scale application.
Description
Technical field
The embodiment of the invention relates to fiber optic communication field, particularly a kind of photoswitch and photoswitch implementation method.
Background technology
In traditional communication network, transmission medium can be divided into wired and wireless two classes.Wireless transmission medium mainly comprises microwave line and synchronous satellite circuit, and the wire transmission media mainly comprises copper cabling and fiber optic cables.Enter after the digital communication epoch,, can't adapt to the digital communication needs of develop rapidly because the information capacity of copper cabling is too little, and the information capacity of optical fiber can exceed several magnitude than copper cash, therefore, with the optical communication technique of optical fiber, more and more receive the concern of industry as transmission medium.
Along with the development of optical communication technique, the performance requirement for photoswitch in the optical communication system is more and more higher.Photoswitch is a kind of Primary Component that can carry out passage conversion to the light signal in the optical transmission line, Route Selection, the wavelength that can be widely used in full photosphere select and the realization of function such as optical cross connect on.Photoswitch mainly comprises mechanical optical switch and waveguide optical switch, wherein, (Micro-Electro-Mechanical System, photoswitch MEMS) have and insert that loss is low, low in energy consumption, irrelevant with wavelength and modulation system, the life-span is long and the reliability advantages of higher based on micro mechanical system.
Have extensive N*N mems optical switch now, mainly adopt the simulated light construction of switch of 3D.This framework needs 2N micro mirror, total N
3Individual state, when the value of N is bigger, for example: N is 32 or 128 o'clock, and the state of mirror is too many, and is big to the control difficulty of micro mirror in the photoswitch, is not easy to production control, thereby makes this N*N mems optical switch be difficult to carry out large-scale application.
Summary of the invention
The invention provides a kind of photoswitch and photoswitch implementation method,, realize a kind of easy control, the convenient photoswitch that uses in order to solve the big problem of control difficulty to micro mirror state in the photoswitch.
The embodiment of the invention provides a kind of photoswitch, comprise: N is to the nonblocking switch fabric of N, described nonblocking switch fabric comprises N*M node, each node comprises that being used to carry out two advances four digital optical switch elements of the two light path exchanges that go out, each digital optical switch unit has two states, and wherein, N is the line number of described nonblocking switch fabric, M is the columns of described nonblocking switch fabric, and N and M are positive integer;
Comprise N input end and N output terminal in the N*M of the described nonblocking switch fabric node;
Described nonblocking switch fabric is used for receiving N the input optical signal that N input optical fibre imported from described N input end; Route through predefined M level node exchanges to a described N input optical signal on the described N output terminal; To be coupled on N the output optical fibre through N the output light signal that obtains after the described nonblocking switch fabric exchange from a described N output terminal.
The embodiment of the invention also provides a kind of implementation method of photoswitch, and wherein, described photoswitch is the photoswitch of said structure;
The implementation method of described photoswitch comprises:
Nonblocking switch fabric receives N input optical signal of N input optical fibre input from N input end;
Route through predefined M level node exchanges to a described N input optical signal on N the output terminal;
To be coupled on N the output optical fibre through N the output light signal that obtains after the described nonblocking switch fabric exchange from a described N output terminal.
A kind of photoswitch that the embodiment of the invention provides and photoswitch implementation method, wherein, photoswitch comprises the nonblocking switch fabric of N to N, this nonblocking switch fabric comprises N*M node, because each node comprises four digital optical switch elements, can realize that two advance the two light path exchanges that go out, the two states that only needs digital optical switch unit in each node of control, the state of the digital optical switch unit that need control is few, and can adopt numerically controlled mode, therefore the control to the node of photoswitch is easy to realize, thereby makes the photoswitch in the embodiment of the invention be fit to large-scale application.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The structural representation of a kind of photoswitch that Fig. 1 provides for the embodiment of the invention one;
The structural representation of a kind of photoswitch that Fig. 2 a provides for the embodiment of the invention two;
The synoptic diagram of the node location of a kind of photoswitch that Fig. 2 b provides for the embodiment of the invention two;
Fig. 2 c is the structural representation of node among Fig. 2 a and Fig. 2 b;
Fig. 2 d is the structural representation of digital optical switch unit in the embodiment of the invention;
Fig. 2 e is a kind of view of digital optical switch unit in the embodiment of the invention;
Fig. 2 f is the another kind of view of digital optical switch unit in the embodiment of the invention;
The synoptic diagram of the implementation method of a kind of photoswitch that Fig. 3 provides for the embodiment of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The structural representation of a kind of photoswitch that Fig. 1 provides for the embodiment of the invention one, as shown in Figure 1, this photoswitch comprises: N is to the nonblocking switch fabric of N, described nonblocking switch fabric comprises N*M node, and each node comprises that being used to carry out two advances four digital optical switch elements of the two light path exchanges that go out, and each digital optical switch unit has two states, wherein, N is the line number of described nonblocking switch fabric, and M is the columns of described nonblocking switch fabric, and N and M are positive integer; Comprise N input end and N output terminal in the N*M of the described nonblocking switch fabric node;
Wherein, nonblocking switch fabric belongs to a kind of non-blocking network, when the signal that the difference input of non-blocking network is brought in exchanges in non-blocking network, can not produce fighting for same public resource.
Described nonblocking switch fabric is used for receiving N the input optical signal that N input optical fibre imported from N input end; Route through predefined M level node exchanges to a described N input optical signal on the described N output terminal; To be coupled on N the output optical fibre through N the output light signal that obtains after the described nonblocking switch fabric exchange from a described N output terminal.Wherein, N input end connects N input optical fibre, and N output terminal connects N output optical fibre.N input optical fibre can be coupled to nonblocking switch fabric with N input optical signal, and nonblocking switch fabric can receive N input optical signal of this N input optical fibre input from N input end; Nonblocking switch fabric can be coupled on N the output optical fibre from N output terminal N output light signal.
In the present embodiment, because the nonblocking switch fabric of photoswitch comprises N input end and N output terminal, so this photoswitch is the N*N photoswitch.Wherein, N node of the row of first in the M row node is N input end, and N node of the M row in the M row node is N output terminal.
In the present embodiment, because the light path that the nonblocking switch fabric of photoswitch can form is many, every light path connects an input end and output terminal of photoswitch.Every light path is through M level node, and this M level node is the node that is arranged in the nonblocking switch fabric different lines of photoswitch.The route of the M level node of every light path process can preestablish.
The photoswitch that present embodiment provides comprises the nonblocking switch fabric of N to N, this nonblocking switch fabric comprises N*M node, because each node comprises four digital optical switch elements, can realize that two advance the two light path exchanges that go out, each digital optical switch unit has two states, the two states that only needs each digital optical switch unit of control, compared with prior art need the state of the digital optical switch unit controlled few, and can adopt numerically controlled mode, therefore the control to the node of photoswitch is easy to realize, the convenient use, thus make the photoswitch in the embodiment of the invention be fit to large-scale application.
The structural representation of a kind of photoswitch that Fig. 2 a provides for the embodiment of the invention two, shown in Fig. 2 a, present embodiment is that example describes with N=16 on the basis of the foregoing description one.Photoswitch is the 16*16 photoswitch in the present embodiment.
In the present embodiment, M can be log
2(N)+1.Because N=16, so M=5.That is to say that nonblocking switch fabric comprises 80 nodes that 16 row, 5 row forms are arranged.In the present embodiment, this photoswitch comprises 16 input ends and 16 output terminals, and 16 nodes of the 1st row are connected with 16 input ends, and 16 nodes of the 5th row are connected with 16 output terminals.Because each node for example comprises four digital optical switch elements: micro mirror, each micro mirror has two states, and therefore, needing the state of the micro mirror controlled in the present embodiment is 16*5*4*2=640; And the state of the micro mirror of the needs of prior art control is 16
3=4096.Compared with prior art, the state of the micro mirror that need control of the embodiment of the invention obviously reduces.
In the present embodiment, each bar light path is through 5 nodes in the nonblocking switch fabric of photoswitch, and these 5 nodes are arranged in the node of the different lines of nonblocking switch fabric.For example: the light path between input end 1 and the output terminal 16 is the light path that has connected the 1st row the 1st row node, the 9th row the 2nd row node, the 13rd row the 3rd row node, the 15th row the 4th row node and the 16th row the 5th row node; Light path between input end 1 and the output terminal 1 is for having connected the 1st row the 1st row node, the 1st row the 2nd row node, the 1st row the 3rd row node, the 1st row the 4th row node and the 1st row the 5th row node.
In the present embodiment, the light path that forms between each node in the nonblocking switch fabric can preestablish, and forms the index path shown in Fig. 2 a, only needs the angle of four digital optical switch elements in each node of control promptly can realize.For example: in the light path and the light path between input end 1 and the output terminal 1 of the 1st row the 1st row node between input end 1 and output terminal 16.Therefore when the 1st row the 1st row node receives light signal, can give the 9th row the 2nd row node by the optic path between input end 1 and the output terminal 16 with light signal, perhaps can also give the 1st row the 2nd row node by the optic path between input end 1 and the output terminal 1 light signal.
Further, the synoptic diagram of the node location of a kind of photoswitch that Fig. 2 b provides for the embodiment of the invention two, shown in Fig. 2 b, in the nonblocking switch fabric of this photoswitch, each node can realize that two advance the two light path exchanges that go out, wherein, digital optical switch unit in the node can adopt digital microlens device (Digital Micromirror Device, hereinafter to be referred as: DMD) chip is realized, therefore, node can be separately positioned on the two-layer dmd chip, concrete method to set up is: the odd column of the node of the nonblocking switch fabric of this photoswitch is arranged on the layer digital microlens device chip, even column is arranged on another layer digital microlens device chip, forms the form on the digital microlens device chip that adjacent row are in different layers respectively.For example: the node of odd column the 1st, 3,5 row is arranged on the DMD_2 layer, and the node that even column the 2nd, 4 is listed as is arranged on the DMD_1 layer; In Fig. 2 b, light signal carries out the light path exchange through the 2nd node _ 2 that are listed as or node _ 3 of DMD_1 layer, then behind the some nodes _ 1 input nonblocking switch fabric of the 1st row of DMD_2 layer, through behind the 3rd, 4,5 row, from nonblocking switch fabric, export successively.
In the present embodiment, each node can comprise four digital optical switch elements, and this digital optical switch unit can be used for reflecting to the received signal.Fig. 2 c is the structural representation of node among Fig. 2 a and Fig. 2 b, shown in Fig. 2 c, node comprises four digital optical switch elements, and these four digital optical switch elements are respectively the first digital optical switch unit 11, the second digital optical switch unit 12, the 3rd digital optical switch unit 13 and the 4th digital optical switch unit 14.The first digital optical switch unit 11 and the 12 adjacent settings of the second digital optical switch unit, the 3rd digital optical switch unit 13 and the 14 adjacent settings of the 4th digital optical switch unit.
As following table 1 is the input/output state table of node, and referring to table 1, node comprises " 0 " and " 1 " two states, and node can both realize that at two states two advance the two light path exchanges that go out.
Table 1
Shown in Fig. 2 c, each node can be realized the two states of above-mentioned table 1, and when state " 0 ", node can be realized light signal output from A input from A, exports from B from the B input; When state " 1 ", node can be realized light signal output from A input from B, exports from A from the B input.
Particularly, when state " 0 ", the first digital optical switch unit 11 can reflex to the light signal that receives the 3rd digital optical switch unit 13, and reflect by the light signal that the 3rd digital optical switch unit 13 will come from the first digital optical switch unit 11, that is: export from A from the A input among Fig. 2 c.The second digital optical switch unit 12 can reflex to the light signal that receives the 4th digital optical switch unit 14, and reflect by the light signal that the 4th digital optical switch unit 14 will come from the second digital optical switch unit 12, that is: export from B from the B input among Fig. 2 c.
When state " 1 ", the first digital optical switch unit 11 can reflex to the light signal that receives the 4th digital optical switch unit 14, and reflect by the light signal that the 4th digital optical switch unit 14 will come from the first digital optical switch unit 11, that is: export from B from the A input among Fig. 2 c.The second digital optical switch unit 12 can reflex to the light signal that receives the 3rd digital optical switch unit 13, and reflect by the light signal that the 3rd digital optical switch unit 13 will come from the second digital optical switch unit 12, that is: export from A from the B input among Fig. 2 c.The incident direction of light signal and exit direction only are a kind of example among Fig. 2 c.
When the 1st row the 2nd row node among Fig. 2 a adopted node shown in above-mentioned Fig. 2 c, the light signal that the 1st row the 2nd row node will come from the 1st row the 1st row node reflexed to the 1st row the 3rd row node, that is: exporting from A from the A input among Fig. 2 c; The light signal that the 1st row the 2nd row node will come from the 9th row the 1st row node reflexes to the 5th row the 3rd row node, that is: exporting from B from the B input among Fig. 2 c; The light signal that the 1st row the 2nd row node will come from the 1st row the 1st row node reflexes to the 5th row the 3rd row node, that is: exporting from B from the A input among Fig. 2 c; The light signal that the 1st row the 2nd row node will come from the 9th row the 1st row node reflexes to the 1st row the 1st row node, that is: export from A from the B input among Fig. 2 c.
Fig. 2 d is the structural representation of digital optical switch unit in the embodiment of the invention, and shown in Fig. 2 d, the digital optical switch unit can comprise permanent magnet 31, mirror assembly 35 and electromagnet 33.Wherein, mirror assembly is arranged on the permanent magnet 31, and electromagnet 33 is arranged at permanent magnet 31 belows.In the present embodiment, mirror assembly 35 can be the MEMS minute surface.Mirror assembly 35 is used in the interaction deflect set angle of permanent magnet 31 and electromagnet 33, and the light signal that receives is reflected.Shown in Fig. 2 d, the S utmost point of permanent magnet 31 is corresponding to a end of electromagnet 33, and the N utmost point of permanent magnet 31 is corresponding to the b end of electromagnet 33.If a end and b end are not added electric current, the state that separates with electromagnet 33 maintenances of permanent magnet 31 then.
Fig. 2 e is a kind of view of digital optical switch unit in the embodiment of the invention, shown in Fig. 2 e, a end and b end to electromagnet 33 apply positive voltage, then the electric current in the coil of electromagnet 33 is a positive current, this moment, the S utmost point of permanent magnet 31 was inhaled mutually with a end of electromagnet 33, make mirror assembly 35 change set angle θ to the S of permanent magnet 31 utmost point one lateral deviation, wherein, the magnitude of voltage of the positive voltage that can apply by control is controlled the size of set angle θ.The S utmost point of permanent magnet 31 can contact or not contact with a of electromagnet 33 end.Further, if when a end in contact of the S of permanent magnet 31 utmost point and electromagnet 33, cancel the positive voltage that a holds and b holds that is applied to electromagnet 33, that is: make electromagnet 33 be in power-down state, then because a of the S utmost point of permanent magnet 31 and electromagnet 33 end can keep the attracting state of a period of time, mirror assembly can keep changeing to the S of permanent magnet 31 utmost point one lateral deviation the state of set angle θ when therefore electromagnet 33 was in power-down state, that is: make the digital optical switch unit keep lock-out state.
Further, distance H when the height h of the S utmost point that can permanent magnet 31 is set to contact with electromagnet 33 less than permanent magnet 31 between mirror assembly 35 and the electromagnet 33, the S utmost point of permanent magnet 31 is not contacted when inhaling mutually with a end of electromagnet 33, then when cancelling the positive voltage that a holds and b holds that is applied to electromagnet 33, the S utmost point of permanent magnet 31 and a of electromagnet 33 end can not keep attracting state again, thereby make the digital optical switch unit no longer keep lock-out state, the height h of the S utmost point of permanent magnet 31 helps the speed that the raising state changes less than the distance H between mirror assembly and the electromagnet 33.
Fig. 2 f is the another kind of view of digital optical switch unit in the embodiment of the invention, shown in Fig. 2 f, a end and b end to electromagnet 33 apply negative voltage, then the electric current in the coil of electromagnet 33 is a negative current, this moment, the N utmost point of permanent magnet 31 was inhaled mutually with the b end of electromagnet 33, make mirror assembly 35 change set angle θ to the N of permanent magnet 31 utmost point one lateral deviation, wherein, the magnitude of voltage of the negative voltage that can apply by control is controlled the size of set angle θ.The N utmost point of permanent magnet 31 can contact or not contact with the b of electromagnet 33 end.Further, if when the b end in contact of the N of permanent magnet 31 utmost point and electromagnet 33, cancel the negative voltage that a holds and b holds that is applied to electromagnet 33, that is: make electromagnet 33 be in power-down state, then because a of the N utmost point of permanent magnet 31 and electromagnet 33 end can keep the attracting state of a period of time, mirror assembly 35 can keep changeing to the N of permanent magnet 31 utmost point one lateral deviation the state of set angle θ when therefore electromagnet 33 was in power-down state, that is: make the digital optical switch unit keep lock-out state.
Further, if need the digital optical switch unit to possess the function that keeps lock-out state, distance H when the height h of the N utmost point that can permanent magnet 31 is set to contact with electromagnet 33 less than permanent magnet 31 between mirror assembly 35 and the electromagnet 33, the N utmost point of permanent magnet 31 is not contacted when inhaling mutually with the b end of electromagnet 33, then when cancelling the negative voltage that a holds and b holds that is applied to electromagnet 33, the N utmost point of permanent magnet 31 and the b of electromagnet 33 end can not keep attracting state again, thereby make the digital optical switch unit no longer keep lock-out state.
Two kinds of lock-out states can be realized in digital optical switch unit shown in above-mentioned Fig. 2 e and Fig. 2 f, and the photoswitch of present embodiment can be realized the breech lock function by this digital optical switch unit.
Digital optical switch unit in the present embodiment can adopt dmd chip to realize.
Photoswitch in the present embodiment can be the 3D photoswitch.
The photoswitch that present embodiment provides, two kinds of lock-out states can be realized by electromagnet and permanent magnet in the digital optical switch unit in the node, realize the breech lock function thereby make photoswitch pass through this digital optical switch unit.Two kinds of lock-out states by the control figure optical switch element, can make four digital optical switch elements in each node, realize that two advance the two light path functions of exchange that go out, compared with prior art need the state of the digital optical switch unit controlled few, and can adopt numerically controlled mode, therefore, to the control of photoswitch be easy to realize, the convenient use, thereby make the photoswitch in the embodiment of the invention be fit to large-scale application.
The synoptic diagram of the implementation method of a kind of photoswitch that Fig. 3 provides for the embodiment of the invention, this photoswitch is the photoswitch of above-mentioned any one structure in the embodiment of the invention;
The implementation method of this photoswitch may further comprise the steps:
The route of step 302, the predefined M level node of process exchanges to a described N input optical signal on N the output terminal;
Particularly, this photoswitch comprises the nonblocking switch fabric of N to N, this nonblocking switch fabric comprises N*M node, because each node comprises four digital optical switch elements, the two states that only needs each node of control, can realize that two advance the two light path exchanges that go out, implementation method particularly can be referring to the associated description in the above embodiment of the present invention.Compared with prior art need the state of the digital optical switch unit controlled few, and can adopt numerically controlled mode, therefore the control to photoswitch be easy to realize, the convenient use, thereby make the photoswitch in the embodiment of the invention be fit to large-scale application.And the photoswitch in the embodiment of the invention possesses the function of breech lock, more following after, the state of digital optical switch unit can keep.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of programmed instruction, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. photoswitch, it is characterized in that, comprise: N is to the nonblocking switch fabric of N, described nonblocking switch fabric comprises N*M node, and each node comprises that being used to carry out two advances four digital optical switch elements of the two light path exchanges that go out, and each digital optical switch unit has two states, wherein, N is the line number of described nonblocking switch fabric, and M is the columns of described nonblocking switch fabric, and N and M are positive integer;
Comprise N input end and N output terminal in the N*M of the described nonblocking switch fabric node;
Described nonblocking switch fabric is used for receiving N the input optical signal that N input optical fibre imported from described N input end; Route through predefined M level node exchanges to a described N input optical signal on the described N output terminal; To be coupled on N the output optical fibre through N the output light signal that obtains after the described nonblocking switch fabric exchange from a described N output terminal.
2. photoswitch according to claim 1 is characterized in that, described M is log
2(N)+1.
3. photoswitch according to claim 1 and 2 is characterized in that, the odd column of the node of described nonblocking switch fabric is arranged on the layer digital microlens device chip, and even column is arranged on another layer digital microlens device chip.
4. photoswitch according to claim 1 and 2 is characterized in that, described digital optical switch unit comprises: permanent magnet, be arranged at the mirror assembly on the described permanent magnet and be arranged at the electromagnet of described permanent magnet below;
Described mirror assembly is used for the interaction deflect set angle at described permanent magnet and described electromagnet, and the light signal that receives is reflected.
5. photoswitch according to claim 4 is characterized in that, described permanent magnet contacts with described electromagnet.
6. photoswitch according to claim 5 is characterized in that, when the height of described permanent magnet is set to contact with described electromagnet less than described permanent magnet, and the distance between described mirror assembly and the described electromagnet.
7. photoswitch according to claim 1, it is characterized in that, described four digital optical switch elements comprise: the first digital optical switch unit, the second digital optical switch unit, the 3rd digital optical switch unit and the 4th digital optical switch unit, described first digital optical switch unit and the described adjacent setting in the second digital optical switch unit, described the 3rd digital optical switch unit and the adjacent setting in the 4th digital optical switch unit;
The described first digital optical switch unit, the light signal that is used for receiving reflex to described the 3rd digital optical switch unit;
Described the 3rd digital optical switch unit, the light signal that is used for coming from the described first digital optical switch unit reflects;
The described second digital optical switch unit, the light signal that is used for receiving reflex to described the 4th digital optical switch unit;
Described the 4th digital optical switch unit, the light signal that is used for coming from the described second digital optical switch unit reflects;
Perhaps
The described first digital optical switch unit, the light signal that is used for receiving reflex to described the 4th digital optical switch unit;
Described the 4th digital optical switch unit, the light signal that is used for coming from the described first digital optical switch unit reflects;
The described second digital optical switch unit, the light signal that is used for receiving reflex to described the 3rd digital optical switch unit;
Described the 3rd digital optical switch unit, the light signal that is used for coming from the described second digital optical switch unit reflects.
8. the implementation method of a photoswitch is characterized in that, described photoswitch is: as the arbitrary described photoswitch of claim 1-7;
The implementation method of described photoswitch comprises:
Nonblocking switch fabric receives N input optical signal of N input optical fibre input from N input end;
Route through predefined M level node exchanges to a described N input optical signal on N the output terminal;
To be coupled on N the output optical fibre through N the output light signal that obtains after the described nonblocking switch fabric exchange from a described N output terminal.
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| CN107346051A (en) * | 2017-07-19 | 2017-11-14 | 武汉长盈通光电技术有限公司 | Optic fibre light path couples micro mechanical system |
| WO2018040554A1 (en) * | 2016-08-30 | 2018-03-08 | 华为技术有限公司 | Method and device for controlling optical switch matrix |
| CN112083530A (en) * | 2020-09-27 | 2020-12-15 | 北京泛在云科技有限公司 | NxM blocked low-cost optical cross matrix |
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| CN107801108A (en) * | 2016-08-30 | 2018-03-13 | 华为技术有限公司 | The method and apparatus for controlling optical switch matrix |
| US10397673B2 (en) | 2016-08-30 | 2019-08-27 | Huawei Technologies Co., Ltd. | Method and apparatus for controlling optical switch matrix |
| CN107801108B (en) * | 2016-08-30 | 2020-04-03 | 华为技术有限公司 | Method and apparatus for controlling an optical switch matrix |
| CN107346051A (en) * | 2017-07-19 | 2017-11-14 | 武汉长盈通光电技术有限公司 | Optic fibre light path couples micro mechanical system |
| CN112083530A (en) * | 2020-09-27 | 2020-12-15 | 北京泛在云科技有限公司 | NxM blocked low-cost optical cross matrix |
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