CN103941349B - A kind of N-port optical router based on Mach once moral photoswitch - Google Patents
A kind of N-port optical router based on Mach once moral photoswitch Download PDFInfo
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Abstract
The invention discloses a kind of clog-free optical router of N-port based on Mach once moral photoswitch.Port number, by adding two one optical waveguides and the individual Mach once moral photoswitch with identical structure and size of 2 (N 2) to N 2 port clog-free optical router structure, can be extended to N by it.The all of the port number of described N-port optical router is that the clog-free optical router of odd number all can be extended step by step by the three clog-free routers of port and obtains, and all of the port number is that the clog-free optical router of even number all can be extended step by step by the four clog-free routers of port and obtains.By modulating the phase place of Mach once moral photoswitch corresponding modulating arm, it is possible to achieve the switching at runtime of Mach once moral photoswitch two states, and then realize the clog-free communication of the N number of bidirectional port of described optical router.The structure of N-port clog-free optical router structure solves the problem that existing route device fabric port number cannot arbitrarily be expanded.
Description
Technical field
The present invention relates to optic communication on-chip optical interconnection technical field, particularly relate to a kind of based on Mach Zeng De
(Mach-Zehnder) the N-port optical router of photoswitch.
Background technology
Sandwich layer silicon and the covering silicon dioxide of silica-based waveguides have higher refractivity so that silica-based ripple
Lead and light field can be limited in sub-micrometer scale, relative to traditional Lithium metaniobate system, based on silica-based ripple
The device led has less size, and it is mutually compatible with traditional CMOS technology in addition, by silica-based light
Sub-device becomes for people in recent years with the function completing complexity on electronic device hybrid integrated to same chip
The focus studied.There is a lot of silicon based photon devices at present, such as manipulator, wave filter, can
Reconstruct difference multiplexer, logical device etc..
Richard A.Soraf et al. is found that the plasma dispersion effect of silicon.Within 2004, Intel exists
The Mach Zeng De reaching 1Gb/s based on the modulation rate of silicon materials SOI on insulating barrier is reported on Nature
(Mach-Zehnder) photoswitch.
Current processor just develops towards the direction of multi-core, but, along with processor core quantity
Be continuously increased, dominant frequency constantly raises, communicate between core with core need bandwidth be also continuously increased.Pass
The electricity interlinkage power consumption of system is high, and time delay is high, and distorted signals is big, and Bandwidth-Constrained does not the most adapt to this
Plant development trend, use the scheme of on-chip optical interconnection network to be expected to can be good at solving this problem.
Router is to build server device, and on current sheet, optical router has the ripple selected based on wavelength
Long route device, the router dynamically configured based on photoswitch, the former autgmentability is poor, number of wavelengths with
The nodes of communication is directly proportional, and the light source of needs is many, system complex, and the light ways for education based on photoswitch
Preferable autgmentability is had by utensil.
Summary of the invention
It is an object of the invention to propose a kind of clog-free light of N-port based on Mach once moral photoswitch
Learn router, by the method adding waveguide and device step by step so that the port number of optical router can
With from three ports upwards infinite expanding, thus complete N number of bidirectional end at on-chip optical interconnection nodes
The clog-free of mouth freely switches.Solve the problem that the port number of existing optical router structure cannot be expanded.
Simultaneously through rational topology design so that the optical router in the present invention and same type router phase
Ratio, has halved photoswitch and has used number, reduced average loss and the crosstalk of link so that this optics
Router has better performance.
In order to achieve the above object, the technical solution used in the present invention is as follows:
A kind of N-port optical router based on Mach once moral photoswitch, it is characterised in that: its be by
Three multi-port optical routers or four multi-port optical routers extend step by step and obtain, and its structure includes: one
N-2 port clog-free optical router RN-2, N one optical waveguide W1, W2…WN-1, WN, 2N-4
Individual Mach once moral photoswitch M1, M2…M2N-4, first input end to N input I1, I2…IN, the
One outfan is to N outfan O1,O2…ON, wherein said N-2 multi-port optical router has first
Input is to N-2 input I1, I2…IN-2, the first outfan to N outfan O1', O2' ..., ON-2’；
Wherein, each Mach once moral photoswitch have first input port, the second input port, first
Output port and the second output port；
1 to N-2 switch Mach once moral photoswitch M in described N number of Mach once moral photoswitch1,
M2…MN-2First input port be respectively connecting to N-2 multi-port optical router RN-2First defeated
Go out to hold to N-2 outfan O1', O2' ..., ON-2’；
The N-2 Mach once moral photoswitch MN-2The first output port as N-port optics route
The N outfan O of deviceN；
1 to N-3 Mach once moral photoswitch M1, M2…MN-3The first output port connect respectively
It is connected to 2 to N-2 Mach once moral photoswitch M2, M3…MN-2The second input port；
Mach one once moral photoswitch M1The second input port as the of N-port optical router
N-1 input IN-1；
1 to N-2 Mach once moral photoswitch M1, M2…MN-2The second output port connect respectively
It is connected to N-1 to 2N-4 Mach once moral photoswitch MN-1, MN…M2N-4First input port；
N-1 to 2N-5 Mach once moral photoswitch MN-1, MN…MN-5The first output port divide
It is not connected to N to 2N Mach once moral photoswitch MN, MN+1…M2N-4The second input port；
The 2N-4 Mach once moral photoswitch M2N-4The first output port as the N-port light ways for education
By the N-1 outfan O of deviceN-1；
The N-1 Mach once moral photoswitch MN-1The second input port as N-port optics route
The N input I of deviceN；
N-1 to 2N-4 Mach once moral photoswitch MN-1, MN…M2N-4The second output port
Respectively as the first outfan of N-port optical router to N-2 outfan O1,O2…ON-2。
From technical scheme it can be seen that the method have the advantages that
1., by using the method extended step by step, the port number of router the most infinitely can increase from three ports
Add, solve the existing route the most extendible problem of device port number, and the N-port router built is
Clog-free router.
2., using Mach once moral photoswitch as elementary cell node, utilize Mach once moral photoswitch phase place to adjust
System changes optical transmission direction, it is possible to achieve uplink communication and downgoing communication simultaneously.
3. by optimizing optics route so that two-way input optical signal can be at a Mach once moral photoswitch
Carry out intersecting or leading directly to the most simultaneously.I.e. one photoswitch controls two optical links simultaneously, and this can subtract
The usage quantity of few Mach once moral photoswitch.The router built by the method, same with report
Scale router is compared, the use minimum number of this structure photoswitch.Additionally, by rational geometry
Arrangement, makes the number of lightguide cross in router topology be reduced to zero.More than optimize and can aid in
Reduce optical loss and the operating power consumption of N-port optical router.
Accompanying drawing explanation
Figure 1A and Figure 1B is the modulation arm phase place of Mach once moral photoswitch light when being respectively 0 and π
The schematic diagram of transmission signal；
Fig. 2 is the showing of the three clog-free optical routers of port based on Mach once moral photoswitch in the present invention
It is intended to；
Fig. 3 is the showing of the four clog-free optical routers of port based on Mach once moral photoswitch in the present invention
It is intended to；
Fig. 4 is that in the present invention, the clog-free optical router of N-2 port based on Mach once moral photoswitch expands
Open up the method schematic diagram to the clog-free optical router of N-port；
Fig. 5 is the showing of the six clog-free optical routers of port based on Mach once moral photoswitch in the present invention
It is intended to；
Fig. 6 is the showing of the seven clog-free optical routers of port based on Mach once moral photoswitch in the present invention
It is intended to；
Fig. 7 is the showing of the clog-free optical router of N-port based on Mach once moral photoswitch in the present invention
It is intended to；
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with concrete real
Execute example, and referring to the drawings, the present invention is described in further detail.
The present invention is the clog-free optics of N-port based on Mach Zeng De (Mach-Zehnder) photoswitch
Router, by the construction method extended step by step, the port number of router can be the most unlimited from three ports
Extend, and the N-port router built is clog-free router.And it route by optimizing this optics
Topological structure, thus reduce the number that Mach once moral photoswitch and waveguide intersect, and then decrease N
The clog-free optical router of port is lost.
Figure 1A and Figure 1B is the modulation arm phase place of Mach once moral photoswitch light when being respectively 0 and π
The schematic diagram of transmission signal；The light of Mach once moral photoswitch is described below in conjunction with Figure 1A and Figure 1B
Information transmission principle.The state of Mach once moral photoswitch is by the phase decision of modulation arm, if modulation arm phase
When potential difference is 0, then pass through photoswitch from Output2 port from the input signal of input port Input1
Output, from the input signal of input port Input2 by Mach once moral photoswitch from Output1 port
Output, thus realize intersection cross of input signal, as shown in Figure 1A.If phase modulation difference is π
Time, then pass through Mach once moral photoswitch from Output1 port from the input signal of input port Input1
Output, from the input signal of input port Input2 by Mach once moral photoswitch from Output2 port
Output, thus realize the straight-through bar of input signal, as shown in Figure 1B.Visible, by modulation correspondence
The phase place of modulation arm, it is possible to achieve the switching at runtime of Mach once moral photoswitch two states.But, by
In the characteristic of Mach once moral photoswitch, input signal only leads directly to or intersection two states.
Fig. 2 is a kind of based on Mach once moral photoswitch the three clog-free smooth ways for education of port that the present invention proposes
By device, including two Mach once moral photoswitch (M with identical structure and size1、M2), straight-through
Waveguide 3.Specifically:
The first input port of described first Mach of once moral photoswitch is as described three port router
Described second input, its second input port is as described 3rd input of described three port router
End, its first output port is connected to the second output port of described second Mach of once moral photoswitch, its
Second output port is as described first outfan of described three port router；
The first input port of described second Mach of once moral photoswitch is as described three port router
Described first input end, its second input port be connected to described first Mach once moral photoswitch first
Output port, its first output port is as the 3rd outfan of described three port router, and it is second years old
Output port is as the second outfan of described three port router.
By regulating two Mach once moral photoswitch (M in three multi-port optical routers1、M2) phase
Position, can realize two different form of route, as shown in table 1.In Table 1, for convenience of representing,
First input port is designated as I1, the first output port is designated as O1, the second input port is designated as I2, the
Two output ports are designated as O2, the 3rd input port is designated as I3, the 3rd output port is designated as O3.Need
It is emphasized that each following port is all relative to three multi-port optical routers rather than relatively
In Mach once moral photoswitch.
Table 1 three port clog-free optical router routing table
| State | Route | M1 | M2 |
| 1 | I1→O2, I2→O3, I3→O1 | Straight-through | Intersect |
| 2 | I1→O3, I2→O1, I3→O2 | Intersect | Straight-through |
Fig. 3 is a kind of based on Mach once moral photoswitch the four clog-free smooth ways for education of port that the present invention proposes
By device structural representation, as it is shown on figure 3, it includes that four had the Mach of identical structure and size once
Moral photoswitch (M1、M2、M3、M4), straight-through waveguide 4.Wherein: wherein, described first horse
The first input port of conspicuous once moral photoswitch as described second input of described four port router,
Its second input port is as described 3rd input of described four port router, its first outfan
Mouth is connected to the second output port of described second Mach of once moral photoswitch, and its second output port connects
First input port to the most described 3rd Mach of once moral photoswitch；
The first input port of described second Mach of once moral photoswitch is as described four port router
Described first input end, its second input port be connected to described first Mach once moral photoswitch first
Output port, its first output port is as the 4th outfan of described three port router, and it is second years old
Output port is connected to the first input port of described 4th Mach of once moral photoswitch；
Second input port of described 3rd Mach of once moral photoswitch is as described four port router
Four-input terminal, its first output port is connected to the second input port of the 4th Mach of once moral photoswitch,
Its second output port is as the first outfan of described four port router；
Described 4th Mach once the first output port of moral photoswitch and the second output port respectively as
3rd outfan of described four port router and the second outfan.
By regulating four Mach once moral photoswitch (M in four multi-port optical routers1、M2、M3、
M4) phase place, the route of nine kinds of multi-forms can be realized, as shown in table 2.In Table 1, for
Convenient expression, is designated as I by first input port1, the first output port is designated as O1, the second input port
It is designated as I2, the second output port is designated as O2, the 3rd input port is designated as I3, the 3rd output port is designated as
O3, four-input terminal mouth is designated as I4, the 4th output port is designated as O4.It is emphasized that following
Each port is all relative to four multi-port optical routers rather than relative to Mach once moral photoswitch
's.
Table 2 four port clog-free optical router routing table
| State | Route | M1 | M2 | M3 | M4 |
| 1 | I1→O2, I2→O3, I3→O4, I4→O1 | Intersect | Intersect | Straight-through | Intersect |
| 2 | I1→O3, I2→O4, I3→O1, I4→O2 | Straight-through | Intersect | Intersect | Straight-through |
| 3 | I1→O4, I2→O1, I3→O2I4→O3 | Intersect | Straight-through | Intersect | Intersect |
| 4 | I1→O2, I2→O1, I3→O4, I4→O3 | Intersect | Intersect | Intersect | Intersect |
| 5 | I1→O2, I2→O4, I3→O1, I4→O2 | Straight-through | Intersect | Intersect | Intersect |
| 6 | I1→O3, I2→O4, I3→O2, I4→O1 | Straight-through | Intersect | Straight-through | Straight-through |
| 7 | I1→O3, I2→O1, I3→O4, I4→O2 | Intersect | Intersect | Intersect | Straight-through |
| 8 | I1→O4, I2→O3, I3→O2, I4→O1 | Straight-through | Straight-through | Straight-through | Straight-through |
| 9 | I1→O4, I2→O3, I3→O1, I4→O2 | Straight-through | Straight-through | Intersect | Straight-through |
When the router port number of required structure is N, if N is odd number, then with three ends
Mouth router is starting point, and every time by the extended method step by step of following accompanying drawing 4, often extension one-level adds two
Individual port, the port number of router is changed to 3 → 5 →... ... → (N-2) → N, until port number
Meet needs.If N is even number, then with four port router as starting point, every time by following accompanying drawing 4
Extended method step by step, often extension one-level add two ports, the port number of router is changed to 4
→ 6 →... ... → (N-2) → N, until port meets needs.
Fig. 4 is that in the present invention, the clog-free optical router of N-2 port based on Mach once moral photoswitch expands
Open up the expansion structure schematic diagram to the clog-free optical router of N-port.As shown in Figure 4, described N
Multi-port optical router is to be expanded by the clog-free optical router of N-2 port.Its structure includes one
Individual N-2 port clog-free optical router RN-2, fiber waveguide N root (W1, W2…WN-1, WN),
Once moral photoswitch 2N-4 (M of Mach1, M2…M2N-4)。
The first input end of N-port router to N input is I1, I2…IN, the first outfan to
N outfan is O1,O2…ON, the first input end of N-2 port router to N-2 input is
I1, I2…IN-2, the first outfan to N outfan is O1', O2' ..., ON-2’.Wherein:
Mach once moral photoswitch M1, M2…MN-2First input end be respectively connecting to N-2 port road
By device RN-2The first outfan to N-2 outfan be O1', O2' ..., ON-2’；
Mach once moral photoswitch MN-2The first outfan as the N outfan of N-port router
ON；
Mach once moral photoswitch M1, M2…MN-3The first outfan be respectively connecting to a Mach Zeng Deguang
Switch M2, M3…MN-2The second input；
Mach once moral photoswitch M1The second input as the N-1 input of N-port router
IN-1；
Mach once moral photoswitch M1, M2…MN-2The second outfan be respectively connecting to a Mach Zeng Deguang
Switch MN-1, MN…M2(N-2)First input end；
Mach once moral photoswitch MN-1, MN…M2(N-2)-1The first outfan be respectively connecting to Mach once
Moral photoswitch MN, MN+1…M2(N-2)The second input；
Mach once moral photoswitch M2(N-2)The first outfan as N-port router N-1 export
End ON-1；
Mach once moral photoswitch MN-1The second input as the N input of N-port router
IN；
Mach once moral photoswitch MN-1, MN…M2(N-2)The second outfan respectively as N-port road
By the first outfan of device to N-2 outfan O1,O2…ON-2。
When N is odd number, final N-port router is by (N-1)2/ 2 Mach once moral photoswitch structures
Become；When N is even number, final N-port router is opened by N × (N-2)/2 Mach Zeng Deguang
Close and constitute.
Fig. 5 show that the aforesaid way utilizing the present invention to propose is extended to based on Mach once moral photoswitch
The schematic diagram of the six clog-free optical routers of port；Fig. 6 shows utilize the present invention to propose above-mentioned
The schematic diagram of the seven clog-free optical routers of port based on Mach once moral photoswitch that mode is extended to；
Fig. 7 shows the N based on Mach once moral photoswitch that the aforesaid way utilizing the present invention to propose is extended to
The schematic diagram of the clog-free optical router of port.
Each optical signal inputted from any one input port of described N-port optical router
Arbitrarily other N-1 output port can be directed to, and the light exported from each output port is believed
Number do not block mutually.
Described all Mach once moral photoswitch has identical structure and size；Each input and outfan
Between connected by fiber waveguide.
Described Mach once moral photoswitch tool leads directly to and intersection two states.By controlling Mach Zeng Deguang
The phase place of switch modulation arm switches between the two state.By 2i Mach once moral photoswitch of regulation
M1, M2……MjThe phase place of (1≤j≤2i) modulation arm, can control photoswitch at two states
Between switching, thus realize the signal that newly adds between two-port and original i port and upload or download.
As shown in table 3.
Table 3 newly adds port and uploads with original signals between ports or download routing table
By this kind of extended method, all of the port number is that the clog-free optical router of odd number all can pass through
The three clog-free routers of port extend step by step and obtain, and all of the port number is the clog-free optics route of even number
Device all can be extended step by step by the four clog-free routers of port and obtain.Fig. 5, Fig. 6 and Fig. 7 are respectively
Six port router, seven port router and the N-port router built by this kind of method.
Above-mentioned N-port optical router based on Mach once moral photoswitch disclosed by the invention, can use
Optoelectronic Integration, is integrated on semiconductor chip, it is achieved choke free optical routing function.
Particular embodiments described above, is carried out the purpose of the present invention, technical scheme and beneficial effect
Further describe it should be understood that the foregoing is only the specific embodiment of the present invention,
Be not limited to the present invention, all within the spirit and principles in the present invention, any amendment of being made,
Equivalent, improvement etc., should be included within the scope of the present invention.
Claims (9)
1. a N-port optical router based on Mach once moral photoswitch, it is characterised in that:
It is to be extended step by step by three multi-port optical routers or four multi-port optical routers and obtained, its structure
Including: a N-2 port clog-free optical router RN-2, N one optical waveguide W1,
W2...WN-1, WN, 2N-4 Mach once moral photoswitch M1, M2...M2N-4, the first input
Hold to N input I1, I2...IN, the first outfan to N outfan O1, O2...ON,
The wherein said clog-free optical router of N-2 port has first input end to N-2 input
I1, I2...IN-2, the first outfan to N outfan O1', O2' ..., ON-2’；
Wherein, each Mach once moral photoswitch have first input port, the second input port,
First output port and the second output port；
1 to N-2 switch Mach once moral photoswitch M in N number of Mach once moral photoswitch1,
M2...MN-2First input port be respectively connecting to the clog-free optical router of N-2 port
RN-2The first outfan to N-2 outfan O1', O2' ..., ON-2’；
The N-2 Mach once moral photoswitch MN-2The first output port as N-port optics
The N outfan O of routerN；
1 to N-3 Mach once moral photoswitch M1, M2…MN-3The first output port divide
It is not connected to 2 to N-2 Mach once moral photoswitch M2, M3…MN-2The second input
Mouthful；
Mach one once moral photoswitch M1The second input port as N-port optical router
N-1 input IN-1；
1 to N-2 Mach once moral photoswitch M1, M2...MN-2The second output port divide
It is not connected to N-1 to 2N-4 Mach once moral photoswitch MN-1, MN...M2N-4First
Input port；
N-1 to 2N-5 Mach once moral photoswitch MN-1, MN...M2N-5First output
Port is respectively connecting to N to 2N Mach once moral photoswitch MN, MN+1...M2NSecond
Input port；
The 2N-4 Mach once moral photoswitch M2N-4The first output port as N-port light
Learn the N-1 outfan O of routerN-1；
The N-1 Mach once moral photoswitch MN-1The second input port as N-port optics
The N input I of routerN；
N-1 to 2N-4 Mach once moral photoswitch MN-1, MN...M2N-4Second output
Port respectively as the first outfan of N-port optical router to N-2 outfan
O1, O2...ON-2。
N-port optical router the most according to claim 1, wherein,
When N is odd number, it is extended step by step by three multi-port optical routers and forms, final N
Multi-port optical router is by (N-1)2/ 2 Mach once moral photoswitches are constituted；When N is even number,
It is extended step by step by four multi-port optical routers, final N-port optical router by
N × (N-2)/2 Mach once moral photoswitch is constituted.
3. according to the N-port optical router described in any one of claim 1-2, wherein, institute
State three multi-port optical routers to include:
First, second Mach of once moral photoswitch；
First to the 3rd fiber waveguide；
First to the 3rd input；
First to the 3rd outfan；
Wherein, the first input port of described first Mach of once moral photoswitch is as described three ports
Described second input of optical router, its second input port is as described three multi-port optical
Described 3rd input of router, its first output port is connected to described second Mach of Zeng De
Second output port of photoswitch, its second output port is as described three multi-port optical routers
Described first outfan；
The first input port of described second Mach of once moral photoswitch is as described three multi-port optical
The described first input end of router, its second input port is connected to described first Mach of Zeng De
First output port of photoswitch, its first output port is as described three multi-port optical routers
The 3rd outfan, its second output port is second defeated as described three multi-port optical routers
Go out end.
4. according to the N-port optical router described in any one of claim 1-2, wherein, institute
State four multi-port optical routers to include:
First to fourth Mach of once moral photoswitch；
First to fourth fiber waveguide；
First to fourth input；
First to fourth outfan；
Wherein, the first input port of described first Mach of once moral photoswitch is as described four ports
Described second input of optical router, its second input port is as described four multi-port optical
Described 3rd input of router, its first output port is connected to described second Mach of Zeng De
Second output port of photoswitch, its second output port is connected to described 3rd Mach of Zeng Deguang
The first input port of switch；
The first input port of described second Mach of once moral photoswitch is as described four multi-port optical
The described first input end of router, its second input port is connected to described first Mach of Zeng De
First output port of photoswitch, its first output port is as described three multi-port optical routers
The 4th outfan, its second output port be connected to described 4th Mach once moral photoswitch
One input port；
Second input port of described 3rd Mach of once moral photoswitch is as described four multi-port optical
The four-input terminal of router, its first output port is connected to the 4th Mach of once moral photoswitch
Second input port, its second output port is first defeated as described four multi-port optical routers
Go out end；
Described 4th Mach once the first output port of moral photoswitch and the second output port be respectively
The 3rd outfan and the second outfan as described four multi-port optical routers.
N-port optical router the most according to claim 1, it is characterised in that:
All Mach once moral photoswitch has identical structure and size；
Fiber waveguide is passed through between each input port and the output port of all Mach once moral photoswitch
Connect.
N-port optical router the most according to claim 1, it is characterised in that described
Mach once moral photoswitch tool leads directly to and intersection two states.
N-port optical router the most according to claim 6, it is characterised in that pass through
The phase place controlling Mach once moral photoswitch modulation arm switches between the two state.
N-port optical router the most according to claim 1, it is characterised in that each
The individual optical signal inputted from any one input of described N-port optical router is directed to
To arbitrarily other N-1 outfan, and the optical signal exported from each outfan does not hinders
Plug.
N-port optical router the most according to claim 1, it is characterised in that use
Optoelectronic Integration, is integrated on semiconductor chip, it is achieved choke free optical routing merit
Energy.
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| CN105353471B (en) * | 2015-10-15 | 2019-03-08 | 华中科技大学 | A kind of optical switch matrix and its route control method |
| CN108886403B (en) | 2016-04-01 | 2022-03-18 | 香港科技大学 | Integrated high radix non-blocking optical switch fabric |
| CN110456455B (en) * | 2018-07-20 | 2020-08-04 | 西安电子科技大学 | On-chip optical switching structure based on plasma-optical switching module |
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| JP4727279B2 (en) * | 2005-04-07 | 2011-07-20 | 日本電信電話株式会社 | Matrix optical switch |
| CN103345023A (en) * | 2013-07-17 | 2013-10-09 | 中国科学院半导体研究所 | Four-port optical route based on Mach-Zehnder optical switches |
| CN103370650A (en) * | 2011-02-15 | 2013-10-23 | 日本电信电话株式会社 | Waveguide-type optical switch |
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| JP4524482B2 (en) * | 2004-03-24 | 2010-08-18 | 独立行政法人情報通信研究機構 | Optical SSB modulator |
| JP4771067B2 (en) * | 2005-12-01 | 2011-09-14 | 独立行政法人情報通信研究機構 | Optical switch system by optical interference |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4727279B2 (en) * | 2005-04-07 | 2011-07-20 | 日本電信電話株式会社 | Matrix optical switch |
| CN103370650A (en) * | 2011-02-15 | 2013-10-23 | 日本电信电话株式会社 | Waveguide-type optical switch |
| CN103345023A (en) * | 2013-07-17 | 2013-10-09 | 中国科学院半导体研究所 | Four-port optical route based on Mach-Zehnder optical switches |
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