CN105899984A - Optical memory and control method therefor - Google Patents
Optical memory and control method therefor Download PDFInfo
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- CN105899984A CN105899984A CN201480040861.0A CN201480040861A CN105899984A CN 105899984 A CN105899984 A CN 105899984A CN 201480040861 A CN201480040861 A CN 201480040861A CN 105899984 A CN105899984 A CN 105899984A
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Abstract
Provided are an optical memory and a control method therefor. The optical memory comprises a multi-stage storage unit, the storage unit of each stage comprising a first phase modulation unit, a second phase modulation unit and an output port. The first phase modulation unit is used for changing a first phase difference between two optical signal data packets on a ring A according to a control signal; and the second phase modulation unit is used for changing a second phase difference between two optical signal data packets output from an optical coupler to a second end according to the control signal. According to the values of the first phase difference and the second phase difference, the optical signal data packets can be output from each stage of the output ports, thereby achieving the output of the present stage. In other words, the optical memory in the embodiments of the present invention can achieve multi-stage storage, and each stage can directly output an optical signal data packet.
Description
The present invention relates to optical information technology field, more particularly to a kind of optical memory and its control method.
Full optical buffer, by the storage and forwarding to light data bag, can solve the problems, such as data packet collisions as the core devices of all-optical switching technique in time domain.Compared to electricity caching, faster, control transparent to modulation format and data transfer rate is more flexible for Optical buffer access speed.
Existing full optical buffer is broadly divided into two major classes：Through-type and feedback cycle type.Through-type optical buffer increases the transmission time in medium by extending the fiber path that optical signal data bag is transmitted, and transmission rate of the reduction optical signal data bag in light-path, realizes the transmission delay of optical signal data bag.Feedback cycle type is then that optical signal data bag is stored in an annular chamber, avoids mixing with previous optical signal data bag by the control to optical signal data bag institute's residence time in annular chamber, causes both to conflict.
It refer to shown in Fig. 1, be a kind of structure chart of the optical memory of feedback cycle type.The optical memory includes multi-level memory cell, in Fig. 1 by taking tertiary storage unit as an example.Include per one-level memory cell：Circulator with three ports, the photo-coupler of 3 × 3 parallel arrangeds.Wherein, two, the outside of the left end of photo-coupler port 1,3 is interconnected to form ring 2 by fiber waveguide.Two, the outside port 4,6 of the right-hand member of photo-coupler is interconnected to form ring 1 by fiber waveguide.In the memory cell of the first order, the port a of circulator is used to receive the optical signal data bag for being input to optical memory.In the memory cell of the third level, the port c of circulator is used to optical signal data bag exporting optical memory.Except the circulator in third level memory cell, per the port a of the port c connection next stage circulators of one-level circulator.
The port a for the circulator that optical signal data bag passes through the first order, through circulator from the port b of circulator after enter the port 2 of photo-coupler, by the beam splitting of photo-coupler, optical signal data bag, which is divided into two-way and respectively enters port 4 and port 6, to go in the same direction.Now, the phase difference of two ways of optical signals packet is 0, so two ways of optical signals packet meets after ring 1 is run one week in opposite directions at the port 5 of photo-coupler, Ran Houtong
The port b that port 5 is returned to circulator through photo-coupler is crossed, the port a of the circulator of the second level is then entered from the port c of circulator.In the second level, repeat and first order identical process, optical signal data bag enters the port a of the circulator of the third level from the port c of the circulator of the second level again, repeated and first order identical process in the third level, optical signal data bag is exported from the port c of the circulator of the third level, represents that optical signal data bag is read from optical memory.Three loop cycles it can thus be seen that optical signal data bag has been delayed in full optical memory.When the series of cascade is more, the duration of delay is longer.
Optical signal data bag enters optical memory from the first order it can be seen from above description, then can only be exported from afterbody, is unable in this grade of output optical signal data bag.In other words, although the optical memory in Fig. 1 has multi-level memory cell, but can only realize that one-level is stored.
The content of the invention
The embodiment of the present invention provides a kind of optical memory and its control method, to solve multistage optical memory of the prior art can not every grade of output light signal optical signal data bag technical problem.
First aspect present invention provides a kind of optical memory, including：
M grades of memory cell；M is the integer more than 1；Every grade of memory cell includes：
Isolating device (10), with port (a), port (b) and port (c)；Wherein, the port (a) of the isolating device (10) of first order memory cell connects the input of the optical memory, for the external reception optical signal data bag from the optical memory；The port (c) of the isolating device (10) of m grades of memory cell connects the output end of the optical memory, for exporting the optical signal data bag to the outside of the optical memory；The port (c) of the isolating device (10) of n-th grade of memory cell is connected with the port (a) of (n+1)th grade of isolating device (10)；N value is 1 to the positive integer between m-1；
The photo-coupler (20) of 3 × 3 parallel arrangeds, the first end of the photo-coupler (20) includes first port (1), second port (2) and the 3rd port (3), and the first port (1) and the 3rd port (3) positioned at the both sides of the second port (2) and are interconnected to form ring (A) by fiber waveguide respectively；Second end of the photo-coupler (20) includes the 4th port (4), fifth port (5) and the 6th port (6), and the 4th port (4) and the 6th port (6) positioned at the both sides of the fifth port (5) and are interconnected to form ring (B) by fiber waveguide respectively；Wherein, the port (b)
It is connected with the second port (2) by fiber waveguide；
First phase modulating unit (30), is arranged on the ring (A)；The first phase that the first phase modulating unit (30) is used to according to control signal be changed between the optical signal data bag entered from the first port (1) and the optical signal data bag entered from the 3rd port (3) is poor；
Second phase modulating unit (40), is arranged on the ring (B)；The second phase modulating unit (40) is used for the phase for changing the optical signal data bag that is optical signal data bag and/or entering from the 6th port (6) entered from the 4th port (4) according to control signal, exports poor to the second phase between the two branched optical signal packets at second end to change from the photo-coupler (20)；
Output port (50), is connected with the fifth port (5)；The output port (50) is used for when the first phase difference is the first value and the second phase difference is second value, output optical signal data bag to the outside of the optical memory.
With reference in a first aspect, in the first possible implementation of first aspect, every grade of memory cell in the 1 to m-1 grades also includes：
First beam splitter member (60), the input of first beam splitter member (60) is connected with the fifth port (5) by fiber waveguide；The output end of first beam splitter member (60) is connected with the output port (50)；Another output end of the first beam splitter member (60) of n-th grade of memory cell is connected to described (n+1)th grade of the first phase modulating unit (30)；
The first phase modulating unit (30) of described (n+1)th grade of memory cell is poor for the optical signal data bag change first phase exported according to first beam splitter member (60) of n-th grade of memory cell；
The optical memory also includes：
Between m-1 the second beam splitter members (70), the port (a) for being separately positioned on the isolating device (10) of the port (c) of the isolating device (10) of n-th grade of memory cell and (n+1)th grade of memory cell；Wherein, another output end of second beam splitter member (70) between n-th grade of memory cell and (n+1)th grade of memory cell is connected to the second phase modulating unit (40) of n-th grade of memory cell；
The second phase modulating unit (40) of n-th grade of memory cell is used for according to described n-th
The optical signal data bag of second beam splitter member (70) output between level memory cell and (n+1)th grade of memory cell changes the phase of the optical signal data bag that is optical signal data bag and/or entering from the 6th port (6) entered from the 4th port (4).
With reference to the first possible implementation of first aspect or first aspect, in second of possible implementation of first aspect, when two branched optical signal packets enter the ring (B) from the 4th port (4) and the 6th port (6) respectively, the second phase modulating unit (40) is specifically for changing the phase from the optical signal data bag that is optical signal data bag and/or entering from the 6th port (6) of the 4th port (4) entrance according to control signal, so that the second phase difference of the two branched optical signals packet is the second value.
With reference to the first possible implementation of first aspect or first aspect, in the third possible implementation of first aspect, second end also includes the 7th port (7) and the 8th port (8), and the 7th port (7) and the 8th port (8) are interconnected to form ring (C) by fiber waveguide；
When two branched optical signal packets respectively enter the ring (B) and the ring C, the second phase modulating unit (40) is used for the phase for changing the optical signal data bag for entering the ring (B) according to control signal so that the second phase difference of the two branched optical signals packet is the second value.
Second aspect of the present invention provides a kind of method for controlling optical memory as described in relation to the first aspect, and for every grade of memory cell, methods described includes：
Optical signal data bag is received by the port (a), and exported the optical signal data bag to the second port (2) of the photo-coupler (20) by the port (b)；
By the processing of the photo-coupler (20), the optical signal data bag is shunted to run at least one entrance ring (B) in two branched optical signal packets, the two branched optical signals packet；
Control the phase of an at least branched optical signal packet described in second phase modulating unit (40) change so that the second phase difference between the two branched optical signals packet is second value；
The second phase difference respectively enters the first port (1) for the two branched optical signals packet of second value and the 3rd port (3) is run in opposite directions in the ring (A)；
The first phase difference for controlling the first phase modulating unit to change the two branched optical signal packets run in opposite directions in the ring (A) is the first value；
After the first phase difference is run one week for the two branched optical signals packet of the first value in the ring (A), from the fifth port (5) output to the output port (50)；
By the output port (50), the optical signal data bag is exported to the outside of the optical memory.
With reference to second aspect, in the first possible implementation of second aspect, every grade of memory cell in the 1 to m-1 grades also includes：First beam splitter member (60), the input of first beam splitter member (60) is connected with the fifth port (5) by fiber waveguide；The output end of first beam splitter member (60) is connected with the output port (50)；Another output end of the first beam splitter member (60) of n-th grade of memory cell is connected to described (n+1)th grade of the first phase modulating unit (30)；
The optical memory also includes：Between m-1 the second beam splitter members (70), the port (a) for being separately positioned on the isolating device (10) of the port (c) of the isolating device (10) of n-th grade of memory cell and (n+1)th grade of memory cell；Wherein, another output end of second beam splitter member (70) between n-th grade of memory cell and (n+1)th grade of memory cell is connected to the second phase modulating unit (40) of n-th grade of memory cell；
Control the phase of an at least branched optical signal packet described in second phase modulating unit (40) change so that the second phase difference between the two branched optical signals packet is second value, including：
The optical signal data bag exported according to second beam splitter member (70) between n-th grade of memory cell and (n+1)th grade of memory cell controls the phase of an at least branched optical signal packet described in the second phase modulating unit (40) change of n-th grade of memory cell so that the second phase difference between the two branched optical signals packet is second value；
The first phase difference for controlling the first phase modulating unit (30) to change the two branched optical signal packets run in opposite directions in the ring (A) is the first value, including：
The first phase difference that the optical signal data bag exported according to first beam splitter member (60) of n-th grade of memory cell controls the first phase modulating unit (30) of (n+1)th grade of memory cell to change the two branched optical signal packets run in opposite directions in the ring (A) is the first value.
With reference to the first possible implementation of second aspect or second aspect, in second of possible implementation of second aspect, when two branched optical signal packets enter the ring (B) from the 4th port (4) and the 6th port (6) respectively, the second phase modulating unit (40) is controlled to change
The phase of an at least branched optical signal packet so that the second phase difference between the two branched optical signals packet is second value, including：
The second phase modulating unit (40) is controlled to change the phase of the optical signal data bag entered from the 4th port (4) and/or the optical signal data bag entered from the 6th port (6) so that the second phase difference of the two branched optical signals packet is second value.
With reference to the first possible implementation of second aspect or second aspect, in second of possible implementation of second aspect, second end also includes the 7th port (7) and the 8th port (8), and the 7th port (7) and the 8th port (8) are interconnected to form ring (C) by fiber waveguide；
When two branched optical signal packets respectively enter the ring (B) and the ring (C), control the phase of an at least branched optical signal packet described in second phase modulating unit (40) change, so that the second phase difference between the two branched optical signals packet is second value, including：
The second phase modulating unit (40) is controlled to change the phase for the optical signal data bag for entering the ring (B) so that the second phase difference of the two branched optical signals packet is second value.
The one or more technical schemes provided in the embodiment of the present invention, have at least the following technical effects or advantages：
In the embodiment of the present invention, optical memory includes multi-level memory cell, and every grade of memory cell includes first phase modulating unit, second phase modulating unit and output port.First phase modulating unit is arranged on ring A.Second phase modulating unit is arranged on ring B.The first phase that first phase modulating unit is used to according to control signal be changed between the optical signal data bag entered from first port and the optical signal data bag entered from the 3rd port is poor；Second phase modulating unit is used for the phase for changing the optical signal data bag that is optical signal data bag and/or entering from the 6th port entered from the 4th port according to control signal, exports poor to second phase between the two branched optical signal packets at the second end to change from photo-coupler.According to first phase difference and the value of second phase difference, optical signal data bag can be caused to be exported from every grade of output port, the output of this grade is realized.In other words, the optical memory in the embodiment of the present invention can realize multistage storage, and can directly export optical signal data bag per one-level.
Fig. 1 is the structural representation of optical memory of the prior art；
Fig. 2 be first embodiment of the invention in optical memory structural representation；
Fig. 3 is the method flow diagram for controlling optical memory in first embodiment of the invention；
Fig. 4 be second embodiment of the invention in optical memory structural representation；
Fig. 5 be third embodiment of the invention in optical memory structural representation.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained on the premise of creative work is not made should all belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of optical memory and its control method, and the technical problem of optical signal data bag can not be exported in this grade to solve multistage optical memory of the prior art.
Optical memory in the embodiment of the present invention can be used under the plurality of application scenes such as fiber optic communication, optical information processing, light packet switch, optical oomputing.Under different application scenarios, the operation logic all same of the optical memory in the embodiment of the present invention, different be probably the optical signal data bag that optical memory is received source it is different, and the destination address of the optical signal data bag of optical memory output is different.
It refer to shown in Fig. 2, be the structure chart of the optical memory in the embodiment of the present invention.The optical memory includes following part：M grades of memory cell, m is the integer more than 1.M specific value can be set according to the actual requirements.
Every grade of memory cell in m grades of memory cell includes：Isolating device 10, the photo-coupler 20 of 3 × 3 parallel arrangeds, first phase modulating unit 30, second phase modulating unit 40 and output port 50.
It should be noted that, isolating device 10 is, for example, specifically the circulator of three ports, it can also be the light isolation device of other three ports or more, for ease of description, in the examples below, isolating device is illustrated by taking three port circulators as an example, and the embodiment of other light isolation devices and three port circulators
Embodiment is identical.
Isolating device 10 has three ports, respectively port a, port b and port c.Wherein, the port a of the isolating device 10 of first order memory cell is used for the external reception optical signal data bag from optical memory.And the port c of the isolating device 10 of m grades of memory cell is used to export optical signal data bag to the outside of optical memory.The port c of the circulator of n-th grade of memory cell is connected with the port a of (n+1)th grade of circulator；N value is 1 to the positive integer between m-1.
Photo-coupler 20 has first end and the second end.First end includes first port 1, the port 3 of second port 2 and the 3rd.The port 3 of first port 1 and the 3rd positioned at the both sides of second port 2 and is interconnected to form ring A by fiber waveguide respectively；Second end of photo-coupler 20 includes the 4th port 4, the port 6 of fifth port 5 and the 6th, and the 4th port 4 and the 6th port 6 positioned at the both sides of fifth port 5 and are interconnected to form ring B by fiber waveguide respectively；Wherein, port b is connected with second port 2 by fiber waveguide.
First phase modulating unit 30, is arranged on ring A.The first phase that first phase modulating unit 30 is used to according to control signal be changed between the optical signal data bag entered from first port 1 and the optical signal data bag entered from the 3rd port 3 is poor.Second phase modulating unit 40, is arranged on ring B.Second phase modulating unit 40 is used for the phase for changing the optical signal data bag entered from the 4th port 4 and/or the optical signal data bag entered from the 6th port 6 according to control signal, exports poor to second phase between the two branched optical signal packets at the second end to change from photo-coupler 30.Output port 50 is connected with fifth port 5, for when first phase difference is second value and second phase difference is the first value, exporting optical signal data bag to the outside of optical memory.
Optionally, the fiber waveguide in the present embodiment can be optical fiber.Optical fiber can be common optical fiber or the optical fiber Jing Guo special processing.Fiber waveguide can also be the material of achievable slow light effect, such as crystal.Fiber waveguide can also be that organic waveguide, polymer waveguide etc. provide the material of light-path.
Referring next to the method flow diagram for the optical memory for shown in Fig. 3, being control figure 2 and embodiment description.For every one-level memory cell, this method includes herein below.
Step 101：Optical signal data bag is received by port a, and exported optical signal data bag to the second end of photo-coupler 20 by port b；
Step 102：By the processing of photo-coupler 20, the optical signal data bag is shunted to two light letters
At least one in number bag, two branched optical signal packets enters operation in ring B；
Step 103：Control second phase modulating unit 40 changes the phase of an at least branched optical signal packet so that the second phase difference between two branched optical signal packets is second value；
Step 104：Second phase difference respectively enters the port 3 of first port 1 and the 3rd for two branched optical signal packets of second value and run in opposite directions in ring A；
Step 105：The first phase difference for controlling first phase modulating unit 30 to change the two branched optical signal packets run in opposite directions in ring A is second value；
Step 106：First phase difference is run after one week for two branched optical signal packets of the first value in ring A, is exported from fifth port 5 to output port 50；
Step 107：By output port 50, optical signal data bag is exported to the outside of optical memory.
It please also refer to shown in Fig. 2 and Fig. 3, for first order memory cell, optical memory is from the optical information of external reception, into the port a of isolating device 10.Then by isolating device 10, the optical signal data bag is exported to the second port 2 of photo-coupler 20 from the port b of isolating device 10.The optical signal data bag enters photo-coupler 20 from second port 2.According to the operation principle of photo-coupler 20, the optical signal data bag is beamed into two branched optical signal packets, respectively enters the 4th port 4 and the 6th port 6 is run in opposite directions in ring B.Next it is different with the modulation result of second phase modulating unit 40 according to first phase modulating unit 30, three kinds of situations can be divided into：The first, the output of this level；Second, exported to subordinate；The third, the storage of this level.
When needing to carry out this grade of output, step 103 is carried out, that is, controls second phase modulating unit 40 to change the phase of an at least branched optical signal packet so that the second phase difference between two branched optical signal packets is second value.Second value is, for example, specifically π.Wherein, the value of second value is related to the operation principle of photo-coupler 30.Specifically, when that branched optical signal packet entered from the 4th port 4 passes through the modulation of second phase modulating unit 40, phase there occurs π phase shifts.Then that branched optical signal packet for occurring π phase shifts continues to run along ring B.And phase shift does not occur for the phase of that branched optical signal packet entered from the 6th port 6, simply run along ring B.In this way, the second phase difference between this two branched optical signals packet is just π.So after this two branched optical signals packet is meeting for one week around ring B operations, the luminous power for being output to fifth port 5 is essentially 0, and by uniform beam splitting to the port 3 of first port 1 and the 3rd, edge
Ring A is run in opposite directions.
Next step 105 is performed, that is, the first phase difference for controlling first phase modulating unit 30 to change the two branched optical signal packets run in opposite directions in ring A is the first value.Second value and the first value specifically can be with identical, can also be different.In the case of difference, the first value and second value for example can be specifically the relations of multiple.
Specifically, that branched optical signal packet entered from first port 1 passes through the modulation of first phase modulating unit 30, and phase there occurs phase shift π.Then that branched optical signal packet for occurring π phase shifts continues to run along ring A.And phase shift does not occur for the phase of that branched optical signal packet entered from the 3rd port 3, simply run along ring A.In this way, the second phase difference between this two branched optical signals packet is just π.So after this two branched optical signals packet is meeting for one week around ring B operations, photo-coupler 30 is again introduced into.According to the operation principle of photo-coupler 30, optical signal data bag is exported to output port 50 from fifth port 5.Again through output port 50, optical signal data bag is exported to the outside of optical memory.It can thus be seen that middle optical signal data bag enters from the first order compared with prior art, from the optical memory of afterbody output, the optical memory in the embodiment of the present invention can be realized in this grade of output, it is possible to realize multistage storage.
In the present embodiment, when realizing this grade of output, the first value and second value are π.
When needing to carry out this grade of storage, this two branched optical signals packet after meeting for one week around ring B operations, the luminous power for being output to fifth port 5 is essentially 0, again by uniform beam splitting to the port 3 of first port 1 and the 3rd, when being run in opposite directions along ring A, now control first phase modulating unit 30 is not as to the progress phase shift of two branched optical signal packets.Therefore, the first phase difference of two branched optical signal packets is 0.So after two branched optical signal packets detour one week along ring A, two branched optical signal packets meet and by photo-coupler 30 and are here divided evenly over the 4th port 4 and the 6th port 6 is run in opposite directions along ring B.40 pairs of a second phase modulating unit wherein branched optical signal packet is controlled to carry out phase shift again so that the second phase difference of two branched optical signal packets is π.So two branched optical signal packets are assigned to the port 3 of first port 1 and the 3rd further through photo-coupler 30 and run in opposite directions along ring A.Control first phase modulating unit 30 continues not as then two branched optical signal packets turn again to ring B and run.And so on, the track of detouring of horizontal " 8 " is formed.Optical signal data bag will be exchanged in two rings, and longer-term storage is in first order memory cell, until foregoing occur in this grade of output and situation about being stored to subordinate described below.
In the present embodiment, when realizing this grade of storage, the first value and second value are respectively 0 and π.
When needing store to subordinate, when two branched optical signal packets enter ring B from the 4th port 4 and the 6th port 6 respectively and are gone in the same direction along ring B, second phase modulating unit 40 is now controlled not as not to the progress phase shift of two branched optical signal packets.Therefore, the second phase difference of two branched optical signal packets is 0.After two branched optical signal packets detour one week along ring B, by the effect of photo-coupler 30, exported from second port 2 to the port b of isolating device 10.Then the effect through isolating device 10, optical signal data bag is exported to the port a of the isolating device 10 of second level memory cell from the port c of isolating device 10.For the memory cell of the second level, the control process identical control process with above-mentioned first order memory cell is carried out.
In the structure of Fig. 2 optical memory, second phase difference refers to export to the phase difference between the 4th port 4 at the second end and two branched optical signal packets of the 6th port 6 from photo-coupler 30.
Optionally, first phase modulating unit 30 is specifically included：Laser and wavelength division multiplexer (English：Wavelength Division Multiplexing, referred to as：WDM).Laser is used to produce control light.WDM is used for optical signal data bag and controls photosynthetic road, and according to the difference of the phase of control light, after by optical signal data bag with photosynthetic road is controlled, different phase shifts will occur for optical signal data bag.Therefore, the phase of optical signal data bag can be changed by this method.
Optionally, first phase modulating unit 30 also includes image intensifer, and the power for amplifying optical signal data bag plays a part of loop power compensation.Cache-time of the optical signal in optical buffer can so be increased.
Optionally, first phase modulating unit 30 also includes Polarization Controller, the polarization state for changing light.
In Fig. 2 structure, second phase modulating unit 40 can be with identical with first phase modulating unit 30.In the present embodiment, step 103 includes：When two branched optical signal packets enter ring B from the 4th port 4 and the 6th port 6 respectively, control second phase modulating unit 40 changes the phase of the optical signal data bag entered from the 4th port 4 and/or the optical signal data bag entered from the 6th port 6 so that the second phase difference of the two branched optical signals packet is second value.
In another embodiment, it refer to shown in Fig. 4, the second end of photo-coupler 30 also includes the 7th port 7 and the 8th port 8.7th port 7 and the 8th port 8 are interconnected to form ring C (as shown in phantom in Figure 4) by fiber waveguide.
In the present embodiment, when two branched optical signal packets respectively enter ring B and ring C, second phase modulating unit 40 is used for the phase for the optical signal data bag for changing according to control signal from the 4th port 4 or entering from the 6th port 6 so that the second phase difference of the two branched optical signals packet is identical or differs.In that case, step 103 includes：Control second phase modulating unit 40 changes the phase of the optical signal data bag from the 4th port 4 or from the entrance of the 6th port 6 so that the second phase difference of the two branched optical signals packet is second value.Certainly, in other cases, for example in the case where being stored to subordinate, it is other values, such as 0 that second phase modulating unit 40, which also changes second phase difference,.
For example, optical signal data bag enters photo-coupler 30 by second port 2, and optical signal data bag beam splitting is respectively enterd ring B and ring C by photo-coupler 30.Optical signal data bag into ring B can enter from the 4th port 4, can also enter from the 6th port 6.Optical signal data bag into ring C can enter from the 7th port 7, can also enter from the 8th port 8.After optical signal data bag respectively enters ring B and ring C, because being provided with second phase modulating unit 40 on ring B, control second phase modulating unit 40 carries out phase-shift operations to the optical signal data bag in ring B.Second phase modulating unit 40 is, for example, specifically the element of the refractive index of regulation fiber waveguide, by the refractive index for adjusting fiber waveguide, change the light path of the optical signal data bag in ring B, and then changing the phase of the optical signal data bag in ring B so that the second phase difference between the optical signal data bag in ring B and ring C is second value.Certainly, in other cases, for example in the case where being stored to subordinate, it is other values, such as 0 that second phase modulating unit 40, which also changes second phase difference,.
When second phase difference is zero, the optical signal data bag in ring C and ring B is returned to after photo-coupler 30, is exported from second port 2.When second phase difference is second value, for example, π, the optical signal data bag in ring B and ring C is returned to after photo-coupler 30, respectively enters the port 3 of first port 1 and the 3rd.Other are similar with the structure in Fig. 2, will not be repeated here.
In the embodiment above, first phase modulating unit 30 and second phase modulating unit 40 can be specifically the modulation for entering line phase according to the control signal of system.Optionally, the control signal can be electric signal.
Optionally, except the first phase modulating unit 30 and m grades of second phase modulating unit 40 of first order memory cell, other first phase modulating units 30 and second phase modulating unit 40 can be with
It is controlled by optical signal data bag, substantially carries out full photocontrol.In other words, control signal is optical signal, and is optical signal data bag in itself as control signal.A kind of possible implementation refer to shown in Fig. 5.
As shown in figure 5, every grade of memory cell in the 1 to m-1 grades also includes：First beam splitter member 60.The input of first beam splitter member 60 is connected with fifth port 5 by fiber waveguide.The output end of first beam splitter member 60 is connected with output port 50.Another output end of first beam splitter member 60 of n-th grade of memory cell is connected to (n+1)th grade of first phase modulating unit 30.The first phase that the first phase modulating unit 30 of (n+1)th grade of memory cell is used to according to the optical signal data bag that the first beam splitter member 60 of n-th grade of memory cell is exported be changed between the optical signal data bag entered from first port 1 and the optical signal data bag entered from the 3rd port 3 is poor.
Optical memory also includes：Between m-1 the second beam splitter members 70, the port a for being separately positioned on the port c of the circulator of n-th grade of memory cell and the circulator of (n+1)th grade of memory cell.Wherein, another output end of the second beam splitter member 70 between n-th grade of memory cell and (n+1)th grade of memory cell is connected to the second phase modulating unit 40 of n-th grade of memory cell.The second phase modulating unit 40 of n-th grade of memory cell is used for the phase of the optical signal data bag that the change of optical signal data bag enters from the 4th port 4 exported according to the second beam splitter member 70 between n-th grade of memory cell and (n+1)th grade of memory cell and/or the optical signal data bag entered from the 6th port 6, exports poor to the second phase between the two branched optical signal packets at the second end to change from photo-coupler 30.
Wherein, the first beam splitter member 60 and the second beam splitter member 70 specific e.g. beam splitter, optical branching filter, demultiplexer, grating etc..Certainly, in practice, the first beam splitter member 60 and the second beam splitter member 70 can also be that other can realize the optical device of light beam splitting function, and all embodiments of the invention are not construed as limiting.For ease of description, in the examples below, the first beam splitter member 60 and the second beam splitter member 70 are illustrated by taking beam splitter as an example, and the embodiment of other beam splitter members and the embodiment of beam splitter are identical.
In the present embodiment, step 103 includes：The optical signal data bag exported according to the second beam splitter member 70 between n-th grade of memory cell and (n+1)th grade of memory cell controls the second phase modulating unit 40 of n-th grade of memory cell to change the phase of an at least branched optical signal packet so that two branched optical signal packets
Between second phase difference be second value.
Step 105 includes：The first phase difference that the optical signal data bag exported according to the first beam splitter member 60 of n-th grade of memory cell controls the first phase modulating unit 30 of (n+1)th grade of memory cell to change the two branched optical signal packets run in opposite directions in ring A is the first value.
Illustrate the implementation process being controlled using optical signal data bag for a specific example below.
For ease of description, it is defined as follows：Represent that the first phase between the two branched optical signal packets that are run in opposite directions in the ring A of n-th grade of memory cell is poor with e, e has two values, 0 and π.Represent that the second phase between the two branched optical signal packets that are run in opposite directions in the ring B of n-th grade of memory cell is poor with f, or the second phase between the two branched optical signal packets run in ring B and in ring C is poor, f also has two values, 0 and π.{ e, f } value represents to carry out this grade of storage, referred to as recovery of stomge state when being { 0, π }.{ e, f } value represents to store to subordinate when being { 0,0 }, referred to as storage configuration state.{ e, f } value represents to carry out this grade of output, referred to as real-time operation state when being { π, π }.Whether (n+1)th grade of port a is represented with g input optical signal packet.When the port a that g values are (n+1)th grade of 1 interval scale has input optical signal packet.When the port a that g values are (n+1)th grade of 0 interval scale does not have input optical signal packet.Whether n-th grade of output port 50 is represented with h output optical signal data bag.Optical signal data bag is exported when h values have for the output port 50 of n-th grade of 1 interval scale.When the output port 50 that h values are n-th grade of 0 interval scale does not export optical signal data bag.G and h combination is used【G, h】Represent.
{ 0,0 } state of n-th grade of memory cell induces n-th grade to (n+1)th grade【1,0】, i.e., n-th grade exports optical signal data bag to (n+1)th grade of memory cell, so g value is 1.N-th grade of locking is { 0, π } state while being stored to (n+1)th grade for n-th grade, it is ensured that the optical signal data bag for entering n-th grade constantly detours in n-th grade.Similarly, (n+1)th grade of memory cell also performs aforesaid operations.
When the output port 50 of n-th grade of memory cell has output, that is when d is 1, (n+1)th grade can be locked and redirected by { 0, π } state as { π, π } state, you can realize the output of the optical signal data bag of (n+1)th grade of memory cell after the optical signal data bag output of n-th grade of memory cell.
After the optical signal data bag of n-th grade of memory cell is exported, n-th grade of memory cell jumps to { 0,0 } state by { π, π } state, to store the optical signal data bag newly entered.
Specifically, when all output nodes of transmission network are stored all in busy condition, it is necessary to enter
State is configured, so all storage levels all put { 0,0 } state.Optical signal data bag enters after the port a of first order memory cell, is constantly stored to subordinate.The second beam splitter member 70 on n-th grade to (n+1)th grade path excites the second phase modulating unit 40 of n-th grade of memory cell to carry out phase-modulation simultaneously so that second phase difference is π.Therefore, now the state of n-th grade of memory cell is changed into { 0, π } state, i.e. recovery of stomge state.It can so ensure that the optical signal data bag newly into n-th grade of memory cell can carry out detouring for horizontal " 8 " in n-th grade of memory cell, life of not contracted for fixed output quotas with existing optical signal data conflicts.After stored configuration state, outside m grades of memory cell holding { 0,0 } states, remaining storage level is all in { 0, π } state.
When there is idle output node, then optical signal data bag is needed to be read, the first phase modulating unit 30 for now controlling first order memory cell by system carries out phase-modulation so that first phase difference is π.The state of so first order memory cell is just changed into { π, π } state, i.e. real-time operation state.The output port 50 of first order memory cell just has the output of optical signal data bag, first beam splitter member 60 of so first order memory cell detects optical signal data bag, the first phase modulating unit 30 that the optical signal data bag beam splitting is sent to second level memory cell will be subjected to phase-modulation so that first phase difference is π.The state of so second level memory cell is just changed into { π, π } state, i.e. real-time operation state.The output port 50 of second level memory cell just has the output of optical signal data bag.The rest may be inferred, realizes sequential reading out for caching optical signal data bag, i.e., all storage levels have storage configuration state to jump to real-time operation state.After real-time operation state, the state of all storage levels is in { π, π } state.
After optical signal data, which is coated with, to be read, all storage levels can realize the saltus step that { 0,0 } state is arrived by { π, π } under the control of system, ensure that new optical signal data bag can be stored when there is new optical signal data bag to enter fashionable with this.
Optical memory in the present embodiment it can be seen from above description can use optical signal data bag to be controlled as control signal to phase modulation unit, realize that the automatic of the state between storage level redirects.Avoid the control structure and algorithm of complexity.
Further, compared to the optical memory described in Fig. 1, the optical memory in the present embodiment can realize the reading and writing data that last in, first out.
In practice, the optical memory in Fig. 4 and Fig. 5 can be combined with each other, i.e., increase the ring C in Fig. 4 in the structure of Fig. 5 optical memory.Optionally, second phase modulating unit 40 can be with
It is adjusted correspondingly.The control process of optical memory with reference to after refer to the associated description of the foregoing structure in Fig. 4 and Fig. 5, will not be repeated here.
The one or more technical schemes provided in application embodiment, have at least the following technical effects or advantages：
In the embodiment of the present invention, multi-level memory cell, and also every grade of memory cell includes first phase modulating unit, second phase modulating unit and output port.First phase modulating unit is arranged on ring A.Second phase modulating unit is arranged on ring B.The first phase that first phase modulating unit is used to according to control signal be changed between the optical signal data bag entered from first port and the optical signal data bag entered from the 3rd port is poor；Second phase modulating unit is used for the phase for changing the optical signal data bag that is optical signal data bag and/or entering from the 6th port entered from the 4th port according to control signal, exports poor to the second phase between the two branched optical signal packets at the second end to change from photo-coupler.According to first phase difference and the value of second phase difference, optical signal data bag can be caused to be exported from every grade of output port, the output of this grade is realized.In other words, the optical memory in the embodiment of the present invention can realize multistage storage, and can directly export optical signal data bag per one-level.
Those of ordinary skill in the art can be appreciated that, the unit and algorithm steps of each example described with reference to the embodiments described herein, it can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate the interchangeability of hardware and software, the composition and step of each example are generally described according to function in the above description.These functions are performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.Professional and technical personnel can realize described function to each specific application using distinct methods, but this realization is it is not considered that beyond the scope of this invention.
It is apparent to those skilled in the art that, for convenience of description and succinctly, the idiographic flow of the method for foregoing description may be referred to the corresponding description in aforementioned means embodiment, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can realize by another way.For example, device embodiment described above is only schematical, for example, the division of the unit, only a kind of division of logic function can when actually realizing
To there is other dividing mode, such as multiple units or component can combine or be desirably integrated into another system, or some features can be ignored, or not perform.In addition, shown or discussed coupling or direct-coupling or communication connection each other can be by the INDIRECT COUPLING of some interfaces, device or unit or communication connection or electricity, mechanical or other forms are connected.
The unit illustrated as separating component can be or may not be physically separate, and the part shown as unit can be or may not be physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Some or all of unit therein can be selected to realize the purpose of scheme of the embodiment of the present invention according to the actual needs.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit or unit is individually physically present or two or more units are integrated in a unit.Above-mentioned integrated unit can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or in use, can be stored in a computer read/write memory medium.Understood based on such, the part that technical scheme substantially contributes to prior art in other words, or all or part of the technical scheme can be embodied in the form of software product, the computer software product is stored in a storage medium, including some instructions to cause a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of each embodiment methods described of the invention.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
It is described above; only embodiment of the invention; but protection scope of the present invention is not limited thereto; any one skilled in the art the invention discloses technical scope in; various equivalent modifications or substitutions can be readily occurred in, these modifications or substitutions should be all included within the scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (8)
- A kind of optical memory, it is characterised in that including：M grades of memory cell；M is the integer more than 1；Every grade of memory cell includes：Isolating device (10), with port (a), port (b) and port (c)；Wherein, the port (a) of the isolating device (10) of first order memory cell connects the input of the optical memory, for the external reception optical signal data bag from the optical memory；The port (c) of the isolating device (10) of m grades of memory cell connects the output end of the optical memory, for exporting the optical signal data bag to the outside of the optical memory；The port (c) of the isolating device (10) of n-th grade of memory cell is connected with the port (a) of (n+1)th grade of isolating device (10)；N value is 1 to the positive integer between m-1；The photo-coupler (20) of 3 × 3 parallel arrangeds, the first end of the photo-coupler (20) includes first port (1), second port (2) and the 3rd port (3), and the first port (1) and the 3rd port (3) positioned at the both sides of the second port (2) and are interconnected to form ring (A) by fiber waveguide respectively；Second end of the photo-coupler (20) includes the 4th port (4), fifth port (5) and the 6th port (6), and the 4th port (4) and the 6th port (6) positioned at the both sides of the fifth port (5) and are interconnected to form ring (B) by fiber waveguide respectively；Wherein, the port (b) is connected with the second port (2) by fiber waveguide；First phase modulating unit (30), is arranged on the ring (A)；The first phase that the first phase modulating unit (30) is used to according to control signal be changed between the optical signal data bag entered from the first port (1) and the optical signal data bag entered from the 3rd port (3) is poor；Second phase modulating unit (40), is arranged on the ring (B)；The second phase modulating unit (40) is used for the phase for changing the optical signal data bag that is optical signal data bag and/or entering from the 6th port (6) entered from the 4th port (4) according to control signal, exports poor to the second phase between the two branched optical signal packets at second end to change from the photo-coupler (20)；Output port (50), is connected with the fifth port (5)；The output port (50) is used for when the first phase difference is the first value and the second phase difference is second value, output optical signal data bag to the outside of the optical memory.
- Optical memory as claimed in claim 1, it is characterised in that every grade of memory cell in the 1 to m-1 grades also includes：First beam splitter member (60), the input of first beam splitter member (60) is connected with the fifth port (5) by fiber waveguide；The output end of first beam splitter member (60) is connected with the output port (50)；Another output end of the first beam splitter member (60) of n-th grade of memory cell is connected to described (n+1)th grade of the first phase modulating unit (30)；The first phase modulating unit (30) of described (n+1)th grade of memory cell is poor for the optical signal data bag change first phase exported according to first beam splitter member (60) of n-th grade of memory cell；The optical memory also includes：Between m-1 the second beam splitter members (70), the port (a) for being separately positioned on the isolating device (10) of the port (c) of the isolating device (10) of n-th grade of memory cell and (n+1)th grade of memory cell；Wherein, another output end of second beam splitter member (70) between n-th grade of memory cell and (n+1)th grade of memory cell is connected to the second phase modulating unit (40) of n-th grade of memory cell；The second phase modulating unit (40) of n-th grade of memory cell is used for the phase of the optical signal data bag that is optical signal data bag and/or entering from the 6th port (6) that the change of optical signal data bag enters from the 4th port (4) exported according to second beam splitter member (70) between n-th grade of memory cell and (n+1)th grade of memory cell.
- Optical memory as claimed in claim 1 or 2, it is characterized in that, when two branched optical signal packets enter the ring (B) from the 4th port (4) and the 6th port (6) respectively, the second phase modulating unit (40) is specifically for changing the phase from the optical signal data bag that is optical signal data bag and/or entering from the 6th port (6) of the 4th port (4) entrance according to control signal so that the second phase difference of the two branched optical signals packet is the second value.
- Optical memory as claimed in claim 1 or 2, it is characterized in that, second end also includes the 7th port (7) and the 8th port (8), and the 7th port (7) and the 8th port (8) are interconnected to form ring (C) by fiber waveguide；When two branched optical signal packets respectively enter the ring (B) and the ring C, the second phase modulating unit (40) is used for the phase for changing the optical signal data bag for entering the ring (B) according to control signal so that the second phase difference of the two branched optical signals packet is the second value.
- A kind of method for controlling optical memory as claimed in claim 1, it is characterised in that for every grade of memory cell, methods described includes：Optical signal data bag is received by the port (a), and exported the optical signal data bag to the second port (2) of the photo-coupler (20) by the port (b)；By the processing of the photo-coupler (20), the optical signal data bag is shunted to run at least one entrance ring (B) in two branched optical signal packets, the two branched optical signals packet；Control the phase of an at least branched optical signal packet described in second phase modulating unit (40) change so that the second phase difference between the two branched optical signals packet is second value；The second phase difference respectively enters the first port (1) for the two branched optical signals packet of second value and the 3rd port (3) is run in opposite directions in the ring (A)；The first phase difference for controlling the first phase modulating unit to change the two branched optical signal packets run in opposite directions in the ring (A) is the first value；After the first phase difference is run one week for the two branched optical signals packet of the first value in the ring (A), from the fifth port (5) output to the output port (50)；By the output port (50), the optical signal data bag is exported to the outside of the optical memory.
- Method as claimed in claim 5, it is characterised in that every grade of memory cell in the 1 to m-1 grades also includes：First beam splitter member (60), the input of first beam splitter member (60) is connected with the fifth port (5) by fiber waveguide；The output end of first beam splitter member (60) is connected with the output port (50)；Another output end of the first beam splitter member (60) of n-th grade of memory cell is connected to described (n+1)th grade of the first phase modulating unit (30)；The optical memory also includes：Between m-1 the second beam splitter members (70), the port (a) for being separately positioned on the isolating device (10) of the port (c) of the isolating device (10) of n-th grade of memory cell and (n+1)th grade of memory cell；Wherein, another output end of second beam splitter member (70) between n-th grade of memory cell and (n+1)th grade of memory cell is connected to described n-th grade and deposited The second phase modulating unit (40) of storage unit；Control the phase of an at least branched optical signal packet described in second phase modulating unit (40) change so that the second phase difference between the two branched optical signals packet is second value, including：The optical signal data bag exported according to second beam splitter member (70) between n-th grade of memory cell and (n+1)th grade of memory cell controls the phase of an at least branched optical signal packet described in the second phase modulating unit (40) change of n-th grade of memory cell so that the second phase difference between the two branched optical signals packet is second value；The first phase difference for controlling the first phase modulating unit (30) to change the two branched optical signal packets run in opposite directions in the ring (A) is the first value, including：The first phase difference that the optical signal data bag exported according to first beam splitter member (60) of n-th grade of memory cell controls the first phase modulating unit (30) of (n+1)th grade of memory cell to change the two branched optical signal packets run in opposite directions in the ring (A) is the first value.
- Method as described in claim 5 or 6, it is characterized in that, when two branched optical signal packets enter the ring (B) from the 4th port (4) and the 6th port (6) respectively, control the phase of an at least branched optical signal packet described in second phase modulating unit (40) change, so that the second phase difference between the two branched optical signals packet is second value, including：The second phase modulating unit (40) is controlled to change the phase of the optical signal data bag entered from the 4th port (4) and/or the optical signal data bag entered from the 6th port (6) so that the second phase difference of the two branched optical signals packet is second value.
- Method as described in claim 5 or 6, it is characterized in that, second end also includes the 7th port (7) and the 8th port (8), and the 7th port (7) and the 8th port (8) are interconnected to form ring (C) by fiber waveguide；When two branched optical signal packets respectively enter the ring (B) and the ring (C), control the phase of an at least branched optical signal packet described in second phase modulating unit (40) change, so that the second phase difference between the two branched optical signals packet is second value, including：The second phase modulating unit (40) is controlled to change the phase for the optical signal data bag for entering the ring (B) so that the second phase difference of the two branched optical signals packet is second value.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1417604A (en) * | 2002-11-27 | 2003-05-14 | 北方交通大学 | Double-ring coupled all optical buffer storage |
| CN101344614A (en) * | 2008-09-04 | 2009-01-14 | 上海交通大学 | Fast dynamic configurable optical grouping caching device in full optical network |
| CN101350672A (en) * | 2008-09-05 | 2009-01-21 | 清华大学 | Stack type whole optical caching device |
| CN101448183A (en) * | 2008-12-25 | 2009-06-03 | 北京邮电大学 | Self-adaptive elastic ring optical buffer for variable length optical packet |
| CN102411985A (en) * | 2011-09-13 | 2012-04-11 | 北京交通大学 | Storing device and method of optical fibre double-ring capable of erasing optical information |
-
2014
- 2014-12-18 CN CN201480040861.0A patent/CN105899984B/en active Active
- 2014-12-18 WO PCT/CN2014/094232 patent/WO2016095164A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1417604A (en) * | 2002-11-27 | 2003-05-14 | 北方交通大学 | Double-ring coupled all optical buffer storage |
| CN101344614A (en) * | 2008-09-04 | 2009-01-14 | 上海交通大学 | Fast dynamic configurable optical grouping caching device in full optical network |
| CN101350672A (en) * | 2008-09-05 | 2009-01-21 | 清华大学 | Stack type whole optical caching device |
| CN101448183A (en) * | 2008-12-25 | 2009-06-03 | 北京邮电大学 | Self-adaptive elastic ring optical buffer for variable length optical packet |
| CN102411985A (en) * | 2011-09-13 | 2012-04-11 | 北京交通大学 | Storing device and method of optical fibre double-ring capable of erasing optical information |
Non-Patent Citations (2)
| Title |
|---|
| 李亚捷: "双环耦合全光缓存器中若干关键问题的研究", 《中国博士学位论文全文数据库-信息科技辑》 * |
| 王拥军: "双环结构级联型全光缓存器", 《中国激光》 * |
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