CN103442311A - Optical network-on-chip system supporting multicast communication - Google Patents
Optical network-on-chip system supporting multicast communication Download PDFInfo
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- CN103442311A CN103442311A CN2013103911308A CN201310391130A CN103442311A CN 103442311 A CN103442311 A CN 103442311A CN 2013103911308 A CN2013103911308 A CN 2013103911308A CN 201310391130 A CN201310391130 A CN 201310391130A CN 103442311 A CN103442311 A CN 103442311A
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Abstract
The invention discloses an optical network-on-chip system supporting multicast communication. The optical network-on-chip system supporting multicast communication mainly solves the problems that an existing optical network-on-chip is low in multicast communication efficiency and complex in network structure, and blocking exists. The optical network-on-chip system structurally comprises a two-stage optical switching network, an IP core, an electric-to-optical conversion unit and an optical-to-electric conversion unit. The two-stage optical switching network is composed of a first stage optical switching network and a second stage optical switching network. Through reasonable arrangement of waveguides and multi-wavelength micro-ring resonators in the first stage optical switching network and waveguides and multi-wavelength micro-ring resonators in the second stage optical switching network, the situation that each communication node can transmit optical signals to all the other communication nodes simultaneously can be guaranteed, and therefore a multicast communication function is achieved. According to the optical network-on-chip system, due to the use of the multi-wavelength micro-ring resonators, the number of micro-ring resonators is reduced, and complexity of the networks is lowered. The optical network-on-chip system can effectively improve the multicast communication efficiency of the optical network-on-chip, simplifies the structure of the optical switching network, and is suitable for inter-core optical interconnection of the optical network-on-chip.
Description
Technical field
The invention belongs to communication technical field, further relate to the network on mating plate system of supporting multi-casting communication in network on mating plate (Optical Network-on-Chip) communication technical field.The network on mating plate system of support multi-casting communication of the present invention can be used for the interconnection of the light between IP kernel on chip, improves the efficiency of internuclear multi-casting communication, simplifies the optical switching network structure.
Background technology
Generally only consider unicast communication at present when the design network on mating plate, seldom consider multi-casting communication.Along with the development of application, the multi-casting communication that provides individual node to arrive a plurality of destination nodes in network on mating plate, become a kind of new communication requirement.In some application of network on mating plate, as Distributed sharing caching system, single program multiple data programming, parallel data procedural model etc., all need the support of multicast service, therefore design and support that the network on mating plate of multicast service is necessary.
The patented technology that Xian Electronics Science and Technology University has " reconfigurable network on mating plate and the collocation method " (applying date: on July 12nd, 2011, application number: CN201110193972.3, publication number: CN102202005A, grant number: disclose a kind of reconfigurable network on mating plate and collocation method thereof ZL201110193972.3), mainly solved the problem that prior art can not the flexible configuration network.The execution mode of this system is: introduce one group of micro-ring resonator optical switch in the connection of each IP kernel and adjacent light router, state for different application controls micro-ring resonator optical switches, select flexibly the optical router be connected with IP kernel, realize the reconstruct of network topology.The weak point that the disclosed system of this patented technology exists is: at first, for realizing each optical router and each IP kernel interconnection on every side, each optical router needs 8 ports, the optical router that builds 8 ports needs a large amount of waveguide and micro-ring resonator, bring very large light loss, the energy comparison that light signal consumes in the process of transmission is large simultaneously.Secondly, point-to-point unicast communication has only been considered in the design of this system, when multicast service produces, need to send successively light signal to different destination nodes, and communication delay is larger.
Patent application " network on mating plate system and communication means thereof based on the Wavelength Assignment " (applying date: on April 23rd, 2012 that Xian Electronics Science and Technology University proposes, application number: CN201210120024.1, publication number: disclose a kind of network on mating plate system and communication means thereof based on Wavelength Assignment CN102638311A).The execution mode of the method: at first, for different optical routers distributes the different wavelength that turns to, secondly, when communication request produces, first preengage link circuit resource, then carry out data communication.The weak point that the disclosed system of this patent application exists is: due to the communication mechanism that adopts the optical circuit exchange, the propagation delay time of light signal is larger.And point-to-point unicast communication has only been considered in the design of this system, each source node does not support to send to a plurality of destination nodes the parallel communications of light signal simultaneously.
Patent application " the clog-free optical router of the five-port based on the micro-ring resonator " (applying date: on May 9th, 2012 that Institute of Semiconductors,Academia Sinica proposes, application number: CN201210142673.1, publication number: disclose the clog-free optical router of a kind of five-port based on micro-ring resonator CN102645706A).The execution mode of this optical router is: utilize micro-ring resonator and waveguide to build the non-blocking optical router of 5 * 5.The weak point that this optical router exists is: only support the communication of single wavelength, compare with the optical router of supporting multi-wavelength, its communication efficiency is lower.
Summary of the invention
The object of the invention is to overcome the deficiency of above-mentioned prior art, a kind of network on mating plate system of supporting multi-casting communication is proposed, to solve the problem of the low and complicated network structure of multi-casting communication efficiency in network on mating plate, realize the efficient multi-casting communication of network on mating plate, reduce communication delay, simplify the structure of optical switching network.
Concrete thought of the present invention is: utilize waveguide and multi-wavelength micro-ring resonator to build choke free two-stage optical switching network, utilize photoelectric conversion unit to produce the multicast light signal, recycling two-stage optical switching network carries out choke free wavelength route to light signal, thereby realizes the multi-casting communication function.
For achieving the above object, the present invention includes two-stage optical switching network, a n IP kernel, a n electrooptic switching element, a n photoelectric conversion unit.Wherein:
The two-stage optical switching network is for the wavelength route of light signal; The two-stage optical switching network comprises first order optical switching network and second level optical switching network, first order optical switching network and second level optical switching network all have n input port and n output port, and the n of a first order optical switching network output port is connected with n input port of second level optical switching network by n root horizontal waveguide.
N IP kernel is divided into two groups, lays respectively at the above and below of two-stage optical switching network, and n IP kernel in the vertical direction form a line, IP kernel for generation of and deal with data.
N electrooptic switching element is successively between n input port of first order optical switching network and n IP kernel, for converting electrical signals to light signal.
N photoelectric conversion unit is successively between n output port of second level optical switching network and n IP kernel, for light signal is converted to the signal of telecommunication.
The present invention compares and has the following advantages with existing system:
First, because the present invention has adopted the two-stage optical switching network with wavelength and the electrooptic switching element with multicast selection function, guaranteed that each communication node can send light signal to other all communication nodes simultaneously, overcome network on mating plate in the prior art and can not support well the problem of multi-casting communication, made the present invention to have advantages of that multi-casting communication efficiency is high.
Second, because the present invention has adopted the micro-ring resonator with a plurality of resonance wavelengths, having overcome network on mating plate in prior art uses micro-ring resonator many, waveguide intersects many, complex structure, light signal loss and the excessive problem of crosstalking, make the present invention have and use micro-ring resonator few, waveguide intersects few, and optical switching network is simple in structure, light signal loss and the low advantage of crosstalking.
The 3rd, the two-stage optical switching network adopted due to the present invention has carried out rational layout to waveguide and multi-wavelength micro-ring resonator, the communication between different input ports of can guaranteeing does not interfere with each other, overcome network on mating plate in the prior art and the problem of blocking easily occurred, made the present invention there is choke free advantage.
The accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is first order optical switching network schematic diagram of the present invention;
Fig. 3 is the second level of the present invention optical switching network schematic diagram;
Fig. 4 is electrooptic switching element structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
With reference to accompanying drawing 1, the present invention supports the network on mating plate system of multi-casting communication, comprises two-stage optical switching network, a n IP kernel, a n electrooptic switching element, a n photoelectric conversion unit, wherein, n gets even number in [4,64] span, and n gets 8 in an embodiment of the present invention.
The two-stage optical switching network is for the wavelength route of light signal; This two-stage optical switching network comprises first order optical switching network and second level optical switching network, first order optical switching network and second level optical switching network all have 8 input ports and 8 output ports, and 8 lines that connect 8 output ports of first order optical switching network and 8 input ports of second level optical switching network in accompanying drawing 1 represent 8 waveguides.
8 IP kernels are divided into two groups, 4 tops that are positioned at the two-stage optical switching network wherein, other 4 belows that are positioned at the two-stage optical switching network, and 8 IP kernel in the vertical directions form a line, IP kernel for generation of and deal with data.
8 electrooptic switching elements are successively between 8 input ports of first order optical switching network and 8 IP kernels, for converting electrical signals to light signal; Line in accompanying drawing 1 between electrooptic switching element and IP kernel represents metal interconnecting wires, and the direction of arrow is the transmission direction of signal, and the line between electrooptic switching element and first order optical switching network represents waveguide.
8 photoelectric conversion units are successively between 8 output ports of second level optical switching network and 8 IP kernels, for light signal is converted to the signal of telecommunication; Line in accompanying drawing 1 between photoelectric conversion unit and IP kernel represents metal interconnecting wires, and the direction of arrow is the transmission direction of signal, and the line between photoelectric conversion unit and second level optical switching network represents waveguide.
With reference to accompanying drawing 2, first order optical switching network of the present invention comprises 8 waveguides and 8 micro-ring resonators, and every line in accompanying drawing 2 represents 1 waveguide, and each circle represents 1 micro-ring resonator.8 micro-ring resonators have identical size and resonance wavelength, and each micro-ring resonator has 4 resonance wavelengths, and 4 resonance wavelengths are followed successively by λ
1to λ
4, λ
1to λ
4in C-band.
8 waveguides are divided into two groups, and 4 waveguides of every group are parallel to each other.4 waveguide levels of first group enter first order optical switching network, form 4 input ports, are labeled as respectively
extremely
, after entering first order optical switching network, every waveguide deflects down 45 °, and before leaving first order optical switching network, every waveguide upward deflects 45 °, and 4 waveguide levels of first group are left first order optical switching network, form 4 output ports, are labeled as respectively
extremely
.4 waveguide levels of second group enter first order optical switching network, form 4 input ports, are labeled as respectively
extremely
, after entering first order optical switching network, every waveguide upward deflects 45 °, and before leaving first order optical switching network, every waveguide deflects down 45 °, and 4 waveguide levels of second group are left first order optical switching network, form 4 output ports, are labeled as respectively
extremely
.First group of 4 waveguide and second group of 4 waveguide are in the inner right-angled intersection of first order optical switching network, form altogether 16 waveguide crosspoints, 16 waveguide crosspoints form a square, diagonal of this square is horizontal, another is in vertical position, choose all waveguides crosspoint on horizontal diagonal, 4 altogether, in the above and below in these 4 waveguide crosspoints, place respectively a micro-ring resonator.
With reference to accompanying drawing 3, the second level of the present invention optical switching network comprises 8 waveguides and 16 micro-ring resonators, and in accompanying drawing 3, every line represents 1 waveguide, and each circle represents 1 micro-ring resonator.8 waveguides are divided into two groups, and 4 waveguides in every group are parallel to each other.4 waveguide levels of first group enter second level optical switching network, form 4 input ports, are labeled as respectively
extremely
, after entering second level optical switching network, every waveguide deflects down 45 °, and before leaving second level optical switching network, every waveguide upward deflects 45 °, and 4 waveguide levels of first group are left second level optical switching network, form 4 output ports, are labeled as respectively
extremely
.4 waveguide levels of second group enter second level optical switching network, form 4 input ports, are labeled as respectively
extremely
, after entering second level optical switching network, every waveguide upward deflects 45 °, and before leaving second level optical switching network, every waveguide deflects down 45 °, and 4 waveguide levels of second group are left second level optical switching network, form 4 output ports, are labeled as respectively
extremely
.Two groups of waveguide right-angled intersections, form 16 waveguide crosspoints altogether, and 16 micro-ring resonators lay respectively at the below in 16 waveguide crosspoints.
16 micro-ring resonators one have 4 kinds, are labeled as respectively T
1to T
4, every kind of micro-ring resonator has 4, and every kind of micro-ring resonator has two resonance wavelengths, wherein is labeled as T
kthe resonance wavelength of micro-ring resonator be λ
kand λ
k+4, wherein k gets an integer, λ in [Isosorbide-5-Nitrae] span
k+4in L-band.16 micro-ring resonators form 4 * 4 squares, and 4 micro-ring resonators on the every row of this square belong to respectively 4 kinds of different micro-ring resonators, and 4 micro-ring resonators that often list also belong to respectively 4 kinds of different micro-ring resonators.
With reference to accompanying drawing 4, electrooptic switching element of the present invention comprises 1 multiwavelength laser source, 8 micro-ring modulators, 1 multicast control unit and 1 waveguide.In accompanying drawing 4, the horizontal line section of lowermost end represents waveguide, and each circle represents 1 micro-ring modulator.Waveguide one end connects the multiwavelength laser source, places abreast 8 micro-ring modulators above waveguide, and the multicast control unit is positioned at the top of 8 micro-ring modulators, and the line that connects 8 micro-ring modulators and multicast control unit in accompanying drawing 4 is signal of telecommunication control line.It is λ that the multiwavelength laser source can produce wavelength
1to λ
8, totally 8 optical carriers.The modulation wavelength of 8 micro-ring modulators is respectively λ
1to λ
8.The multicast control unit, for controlling the on off state of different micro-ring modulators, according to the multicast service demand, optionally will be modulated into from the signal of telecommunication of IP kernel the light signal of different wave length simultaneously.
Claims (5)
1. a network on mating plate system of supporting multi-casting communication, comprise two-stage optical switching network, a n IP kernel, a n electrooptic switching element, a n photoelectric conversion unit;
Described two-stage optical switching network, for the wavelength route of light signal; Described two-stage optical switching network comprises first order optical switching network and second level optical switching network, first order optical switching network and second level optical switching network all have n input port and n output port, and the n of a first order optical switching network output port is connected with n input port of second level optical switching network by n root horizontal waveguide;
A described n IP kernel is divided into two groups, lays respectively at the above and below of two-stage optical switching network, and n IP kernel in the vertical direction form a line, IP kernel for generation of and deal with data;
A described n electrooptic switching element, successively between n input port of first order optical switching network and n IP kernel, for converting electrical signals to light signal;
A described n photoelectric conversion unit, successively between n output port of second level optical switching network and n IP kernel, for light signal is converted to the signal of telecommunication.
2. the network on mating plate system of support multi-casting communication according to claim 1, is characterized in that, described n gets even number in [4,64] span.
3. the network on mating plate system of support multi-casting communication according to claim 1, is characterized in that, described first order optical switching network comprises the waveguide of n root and n micro-ring resonator; A described n micro-ring resonator has identical size and resonance wavelength, and each micro-ring resonator has n/2 resonance wavelength, and n/2 resonance wavelength is followed successively by λ
1to λ
n/2, λ
1to λ
n/2in C-band;
The waveguide of described n root is divided into two groups, and the n/2 root waveguide of every group is parallel to each other; First group of waveguide level enters first order optical switching network, forms n/2 input port, is labeled as respectively
extremely
, after entering first order optical switching network, every waveguide deflects down 45 °, and before leaving first order optical switching network, every waveguide upward deflects 45 °, and first group of waveguide level left first order optical switching network, forms n/2 output port, is labeled as respectively
extremely
; Second group of waveguide level enters first order optical switching network, forms n/2 input port, is labeled as respectively
extremely
, after entering first order optical switching network, every waveguide upward deflects 45 °, and before leaving first order optical switching network, every waveguide deflects down 45 °, and second group of waveguide level left first order optical switching network, forms n/2 output port, is labeled as respectively
extremely
; First group of waveguide and second group of waveguide, in the inner right-angled intersection of first order optical switching network, form n altogether
2/ 4 waveguide crosspoints, n
2/ 4 waveguide crosspoints form a square, diagonal of this square is horizontal, another chooses all waveguides crosspoint on horizontal diagonal in vertical position, in the above and below in each waveguide crosspoint, places respectively a micro-ring resonator.
4. the network on mating plate system of support multi-casting communication according to claim 1, is characterized in that, described second level optical switching network comprises the waveguide of n root and n
2/ 4 micro-ring resonators; The waveguide of described n root is divided into two groups, and the n/2 root waveguide in every group is parallel to each other; First group of waveguide level enters second level optical switching network, forms n/2 input port, is labeled as respectively
extremely
, after entering second level optical switching network, every waveguide deflects down 45 °, and before leaving second level optical switching network, every waveguide upward deflects 45 °, and first group of waveguide level left second level optical switching network, forms n/2 output port, is labeled as respectively
extremely
; Second group of waveguide level enters second level optical switching network, forms n/2 input port, is labeled as respectively
extremely
, after entering second level optical switching network, every waveguide upward deflects 45 °, and before leaving second level optical switching network, every waveguide deflects down 45 °, and second group of waveguide level left second level optical switching network, forms n/2 output port, is labeled as respectively
extremely
; Two groups of waveguide right-angled intersections, form n altogether
2/ 4 waveguide crosspoints, n
2/ 4 micro-ring resonators lay respectively at n
2the below in/4 waveguide crosspoints;
Described n
2/ 4 total n/2 kinds of micro-ring resonator one, be labeled as respectively T
1to T
n/2, every kind of total n/2 of micro-ring resonator is individual, and every kind of micro-ring resonator has two resonance wavelengths, wherein is labeled as T
kthe resonance wavelength of micro-ring resonator be λ
kand λ
k+n/2, wherein k gets an integer, λ in [1, n/2] span
k+n/2in L-band; n
2/ 4 micro-ring resonators form a n/2 * n/2 square, and on this foursquare every row, the total different micro-ring resonator of n/2 kind, often list the micro-ring resonator that also has the n/2 kind different.
5. the network on mating plate system of support multi-casting communication according to claim 1, it is characterized in that, each electrooptic switching element in a described n electrooptic switching element comprises 1 multiwavelength laser source, n micro-ring modulator, 1 multicast control unit and 1 waveguide; Described waveguide one end connects the multiwavelength laser source, places abreast n micro-ring modulator above waveguide, and the multicast control unit is positioned at the top of n micro-ring modulator; It is λ that described multiwavelength laser source can produce wavelength
1to λ
n, be total to n optical carrier; The modulation wavelength of described n micro-ring modulator is respectively λ
1to λ
n; Described multicast control unit, for controlling the on off state of different micro-ring modulators, according to the multicast service demand, optionally will be modulated into from the signal of telecommunication of IP kernel the light signal of different wave length simultaneously.
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| CN104243326A (en) * | 2014-09-11 | 2014-12-24 | 西安电子科技大学 | On-chip network multicast grouping breakpoint detour transmission continuing mechanism |
| CN105652370A (en) * | 2016-01-26 | 2016-06-08 | 西安电子科技大学 | Router structure based on microring resonators and arrayed waveguide grating |
| CN106407154A (en) * | 2015-08-03 | 2017-02-15 | 华为技术有限公司 | On-chip optical network topology and data transmission method |
| CN106533993A (en) * | 2016-12-12 | 2017-03-22 | 西安电子科技大学 | Optical network on chip based on five-port optical router |
| CN109151622A (en) * | 2018-10-19 | 2019-01-04 | 西安电子科技大学 | Expansible multistage optical switching network |
| CN109246493A (en) * | 2018-08-14 | 2019-01-18 | 西安电子科技大学 | A kind of the network on mating plate framework and communication means of multicast and broadcast communication perception |
| CN109257662A (en) * | 2018-08-14 | 2019-01-22 | 西安电子科技大学 | Structure and communication means on broadcast mating plate based on micro-loop power divider and groupization |
| CN109525909A (en) * | 2018-12-05 | 2019-03-26 | 西安邮电大学 | A kind of passive light interconnection network architecture |
| CN109862446A (en) * | 2019-01-28 | 2019-06-07 | 西安电子科技大学 | A kind of multi-mode light Switching Module |
| CN110213680A (en) * | 2019-05-30 | 2019-09-06 | 西安电子科技大学 | A kind of light crosspoint design method of multi-wavelength |
| CN111245730A (en) * | 2020-01-15 | 2020-06-05 | 中山大学 | Routing system and communication method of network on chip |
| CN111786911A (en) * | 2020-05-26 | 2020-10-16 | 重庆邮电大学 | Hybrid wireless optical network-on-chip architecture and multicast routing algorithm thereof |
| WO2022228115A1 (en) * | 2021-04-29 | 2022-11-03 | 华为技术有限公司 | Electrical switching cluster system |
| US11817903B2 (en) | 2020-08-06 | 2023-11-14 | Celestial Ai Inc. | Coherent photonic computing architectures |
| US11835777B2 (en) | 2022-03-18 | 2023-12-05 | Celestial Ai Inc. | Optical multi-die interconnect bridge (OMIB) |
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| CN104243326A (en) * | 2014-09-11 | 2014-12-24 | 西安电子科技大学 | On-chip network multicast grouping breakpoint detour transmission continuing mechanism |
| CN106407154A (en) * | 2015-08-03 | 2017-02-15 | 华为技术有限公司 | On-chip optical network topology and data transmission method |
| CN105652370A (en) * | 2016-01-26 | 2016-06-08 | 西安电子科技大学 | Router structure based on microring resonators and arrayed waveguide grating |
| CN105652370B (en) * | 2016-01-26 | 2019-10-29 | 西安电子科技大学 | A kind of router topology based on micro-ring resonator and array waveguide grating |
| CN106533993A (en) * | 2016-12-12 | 2017-03-22 | 西安电子科技大学 | Optical network on chip based on five-port optical router |
| CN106533993B (en) * | 2016-12-12 | 2019-04-23 | 西安电子科技大学 | Network on mating plate based on five port optical routers |
| CN109257662B (en) * | 2018-08-14 | 2021-06-08 | 西安电子科技大学 | Broadcast optical chip structure and communication method based on micro-ring power divider and grouping |
| CN109246493A (en) * | 2018-08-14 | 2019-01-18 | 西安电子科技大学 | A kind of the network on mating plate framework and communication means of multicast and broadcast communication perception |
| CN109257662A (en) * | 2018-08-14 | 2019-01-22 | 西安电子科技大学 | Structure and communication means on broadcast mating plate based on micro-loop power divider and groupization |
| CN109246493B (en) * | 2018-08-14 | 2021-06-08 | 西安电子科技大学 | Optical network-on-chip architecture for multicast broadcast communication perception and communication method |
| CN109151622A (en) * | 2018-10-19 | 2019-01-04 | 西安电子科技大学 | Expansible multistage optical switching network |
| CN109151622B (en) * | 2018-10-19 | 2021-07-06 | 西安电子科技大学 | Scalable multi-stage optical switching network |
| CN109525909B (en) * | 2018-12-05 | 2021-09-14 | 西安邮电大学 | Passive optical interconnection network structure |
| CN109525909A (en) * | 2018-12-05 | 2019-03-26 | 西安邮电大学 | A kind of passive light interconnection network architecture |
| CN109862446A (en) * | 2019-01-28 | 2019-06-07 | 西安电子科技大学 | A kind of multi-mode light Switching Module |
| CN110213680B (en) * | 2019-05-30 | 2021-05-18 | 西安电子科技大学 | Multi-wavelength optical switching unit design method |
| CN110213680A (en) * | 2019-05-30 | 2019-09-06 | 西安电子科技大学 | A kind of light crosspoint design method of multi-wavelength |
| CN111245730A (en) * | 2020-01-15 | 2020-06-05 | 中山大学 | Routing system and communication method of network on chip |
| CN111245730B (en) * | 2020-01-15 | 2021-10-08 | 中山大学 | Routing system and communication method of network on chip |
| CN111786911A (en) * | 2020-05-26 | 2020-10-16 | 重庆邮电大学 | Hybrid wireless optical network-on-chip architecture and multicast routing algorithm thereof |
| CN111786911B (en) * | 2020-05-26 | 2022-02-08 | 重庆邮电大学 | Hybrid wireless optical network-on-chip system and multicast routing method thereof |
| US11817903B2 (en) | 2020-08-06 | 2023-11-14 | Celestial Ai Inc. | Coherent photonic computing architectures |
| WO2022228115A1 (en) * | 2021-04-29 | 2022-11-03 | 华为技术有限公司 | Electrical switching cluster system |
| US11835777B2 (en) | 2022-03-18 | 2023-12-05 | Celestial Ai Inc. | Optical multi-die interconnect bridge (OMIB) |
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