CN107132620B - Network structure based on rotary array waveguide grating device - Google Patents
Network structure based on rotary array waveguide grating device Download PDFInfo
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- CN107132620B CN107132620B CN201710323308.3A CN201710323308A CN107132620B CN 107132620 B CN107132620 B CN 107132620B CN 201710323308 A CN201710323308 A CN 201710323308A CN 107132620 B CN107132620 B CN 107132620B
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- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
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- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29304—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating
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Abstract
The embodiment of the application discloses a network structure based on a rotary arrayed waveguide grating device, which is used for solving the problem that the capacity expansion groups of a full-connection network structure have more jumpers and greatly reducing the quantity of the interclass interconnection optical fibers. The network structure based on the rotating array waveguide grating device of the embodiment of the application comprises: at least two rotating arrayed waveguide grating devices and a plurality of switches; each rotary arrayed waveguide grating device is connected with at least one other rotary arrayed waveguide grating device through an interconnection port; the other ports of the at least two rotary arrayed waveguide grating devices except the interconnection port are respectively connected with any one of the plurality of switches, the input port is used for acquiring optical signals from the connected switches, and the output port is used for sending the optical signals to the connected switches.
Description
Technical Field
The application relates to the field of computer communication, in particular to a network structure based on a rotary arrayed waveguide grating device.
Background
When a signal sent by a source server is received by a first switch with a wavelength division multiplexing function, the signal is modulated into an optical signal with a corresponding wavelength by adopting a wavelength division multiplexing technology; transmitting the successfully modulated optical signal to an Arrayed Waveguide Grating (AWG); the array waveguide grating can carry out multiplexing and demultiplexing treatment on all wavelength optical signals, and sends the optical signals with the wavelength synthesized by the target server to a second switch connected with the target server; and the second exchanger converts the received optical signals into electric signals and then sends the electric signals to the destination server. As shown in fig. 1a, the all-optical Scale Out DCN structure is a physically star-connected network structure, the optical link is a fully-interconnected network structure, a plurality of small switches are star-connected to the AWG device through single-mode fibers, and the network structure with fully-interconnected optical paths is implemented by using the wavelength division multiplexing technology and the wavelength rotation function of the AWG device, as shown in fig. 1 b. The Array Waveguide Grating (AWGR) device is a minimum network module constructed according to an all-optical Scale Out DCN structure, and is formed by star-connecting an AWGR device and a plurality of switches by single-mode optical fibers.
The dual-homing access scheme of different switches in the AWGR module is as follows: in order to realize high availability of communication between servers, two service ports of a server are respectively accessed to the downlink ports of two different rack switches (TOR) in an AWGR module; as shown in fig. 2a, the Server1 communicates with the Server2, the Server1 is connected to two different switches TOR1 and TOR2 in the AWGR module, the Server2 is connected to two different switches TOR3 and TOR4, and when any one of the switches TOR1/TOR2 or TOR3/TOR4 fails, the Server1 and the Server2 can still communicate normally without interruption. The dual-homing access of different switches in the AWGR module has a single-point fault risk point, and when the AWGR device is the single-point fault risk point and the whole system is unavailable after a fault, the connection between the Server1 and the Server2 is interrupted.
In the existing scheme, multiple AWGR devices are provided through network capacity expansion, the problem of a single-point fault risk point is avoided, and more than two AWGR modules are interconnected through inter-switch jumpers, as shown in fig. 2 b. In the scheme, a switch accesses one AWGR device through a combined wave of optical signals with multiple wavelengths to form a point of deployment (POD), network expansion is realized by increasing the number of PODs, and interconnection between PODs is realized by directly connecting multimode fiber jumpers to TOR ports. Because there are a large number of fiber jumpers between POD groups, the number of interconnecting fibers between POD groups increases dramatically as the number of modules increases.
Disclosure of Invention
The embodiment of the application provides a network structure based on a rotary arrayed waveguide grating device, which is used for solving the problem that the capacity expansion groups of a full-connection network structure have more jumpers, greatly reducing the quantity of the inter-group interconnection optical fibers and realizing the high-availability networking of the network.
A first aspect of an embodiment of the present application provides a network structure based on a rotating arrayed waveguide grating device, including: a plurality of switches and at least two rotating arrayed waveguide grating devices; each rotating arrayed waveguide grating device is connected with at least one other rotating arrayed waveguide grating device through an interconnection port, every two rotating arrayed waveguide grating devices are connected with each other, the number of input ports and the number of output ports of each rotating arrayed waveguide grating device are the same, and the interconnection port is an input port or an output port for connecting the other rotating arrayed waveguide grating devices; the other ports of the at least two rotary arrayed waveguide grating devices except the interconnection port are respectively connected with any one of the plurality of switches, the number of the other ports except the interconnection port is the same as that of the plurality of switches, the input port is used for obtaining optical signals from the connected switches, and the output port is used for sending the optical signals to the connected switches. The embodiment of the application provides a network structure based on a rotary arrayed waveguide grating device, which is used for solving the problem that the capacity expansion groups of a full-connection network structure have more jumpers, greatly reducing the quantity of the inter-group interconnection optical fibers and realizing the high-availability networking of the network.
In a possible design, in a first implementation manner of the first aspect of the embodiment of the present application, each of the rotating arrayed waveguide grating devices is connected to at least one other rotating arrayed waveguide grating device through a single-mode optical fiber. The embodiment of the application limits the connection mode between each rotating arrayed waveguide grating device, and increases the realizability and integrity of the embodiment of the application.
In a possible design, in a second implementation manner of the first aspect of the embodiment of the present application, each of the rotating arrayed waveguide grating devices is connected to at least one other rotating arrayed waveguide grating device through a single-mode optical fiber, and the single-mode optical fiber may be connected to an optical power amplifier in series. The embodiment of the application limits the connection mode between each rotating arrayed waveguide grating device, provides an optical power amplifier, and increases the realizability and integrity of the embodiment of the application.
In a possible design, in a third implementation manner of the first aspect of the embodiment of the present application, the at least two rotating arrayed waveguide grating devices at least include a first rotating arrayed waveguide grating device and a second rotating arrayed waveguide grating device, the first rotating arrayed waveguide grating device and the second rotating arrayed waveguide grating device are connected by an interconnection port, an output port of the first rotating arrayed waveguide grating device is connected to an input port of the second rotating arrayed waveguide grating device, an input port of the first rotating arrayed waveguide grating device is connected to an output port of the second rotating arrayed waveguide grating device, and the interconnection port is an input port or an output port for connecting the other rotating arrayed waveguide grating devices; the other ports of the at least two rotary arrayed waveguide grating devices except the interconnection port are respectively connected with any one of the plurality of switches, the input port is used for acquiring optical signals from the connected switches, and the output port is used for sending the optical signals to the connected switches. The embodiment of the present application describes in detail a connection relationship between the first rotating arrayed waveguide grating device and the second rotating arrayed waveguide grating device, and increases the operability of the embodiment of the present application.
In a possible design, in a fourth implementation manner of the first aspect of the embodiment of the present application, the input ports and the output ports of each of the rotating arrayed waveguide grating devices are arranged in the same order, and the serial numbers of the interconnection ports of each of the rotating arrayed waveguide grating devices are the same. The embodiment of the application limits the input port and the output port of each rotating arrayed waveguide grating device, and increases the implementation modes of the embodiment of the application.
IN a possible design, IN a fifth implementation manner of the first aspect of the embodiments of the present application, the at least two rotating arrayed waveguide grating devices at least include a first rotating arrayed waveguide grating device and a second rotating arrayed waveguide grating device, the first rotating arrayed waveguide grating device and the second rotating arrayed waveguide grating device are connected by an interconnection port, each of the first rotating arrayed waveguide grating device and the second rotating arrayed waveguide grating device has N input ports and N output ports, N is a positive integer greater than or equal to 2, an output port OUT1(i) of the first rotating arrayed waveguide grating device is connected with an input port IN2(i) of the second rotating arrayed waveguide grating device, an output port IN1(i) of the first rotating arrayed waveguide grating device is connected with an input port OUT2(i) of the second rotating arrayed waveguide grating device, i is greater than or equal to 1 and less than or equal to N; the rest (N-1) ports of the first rotating arrayed waveguide grating device are respectively connected with any one of the switches, and the rest (N-1) ports of the second rotating arrayed waveguide grating device are respectively connected with any one of the switches. The embodiment of the present application provides a specific connection manner of the interconnection ports of the first rotary arrayed waveguide grating device and the second rotary arrayed waveguide grating device, and increases the realizability of the embodiment of the present application.
In a possible design, in a sixth implementation manner of the first aspect of the embodiment of the present application, the plurality of switches include a first group of switches connected to an input port of the first rotating arrayed waveguide grating device and a second group of switches connected to an output port of the second rotating arrayed waveguide grating device, where the first group of switches are configured to send optical signals to the first rotating arrayed waveguide grating device, and the second group of switches are configured to receive the optical signals from the second rotating arrayed waveguide grating device. The embodiment of the application provides the specific connection condition of the plurality of switches with the first rotating arrayed waveguide grating device and the second rotating arrayed waveguide grating device respectively, so that the application has more logicality.
In a possible design, in a seventh implementation manner of the first aspect of the embodiment of the present application, the first rotating arrayed waveguide grating device is configured to obtain an input signal from the first group of switches and convert the input signal into a transition signal, the second rotating arrayed waveguide grating device is configured to receive the transition signal, and the second rotating arrayed waveguide grating device is configured to convert the transition signal into an output signal and send the output signal to the second group of switches. The embodiment of the application provides a transmission mode of optical signals between the plurality of switches through the first rotating arrayed waveguide grating device and the second rotating arrayed waveguide grating device, so that the application is more complete in steps.
In a possible design, in an eighth implementation manner of the first aspect of the embodiment of the present application, the network structure may be network-expanded, the at least three rotating arrayed waveguide grating devices at least include a first rotating arrayed waveguide grating device, a second rotating arrayed waveguide grating device, and a third rotating arrayed waveguide grating device, the first rotating arrayed waveguide grating device, the second rotating arrayed waveguide grating device, and the third rotating arrayed waveguide grating device are connected by an interconnection port, an output port of the first rotating arrayed waveguide grating device is connected to an input port of the second rotating arrayed waveguide grating device, an output port of the second rotating arrayed waveguide grating device is connected to an input port of the third rotating arrayed waveguide grating device, an output port of the third rotating arrayed waveguide grating device is connected to an input port of the first rotating arrayed waveguide grating device, the interconnection port is an input port or an output port for connecting other rotary arrayed waveguide grating devices; the other ports of the at least three rotating arrayed waveguide grating devices except the interconnection port are respectively connected with any one of the plurality of switches, the input port is used for acquiring optical signals from the connected switches, and the output port is used for sending the optical signals to the connected switches. The embodiment of the application describes in detail the connection relationship among the first rotating arrayed waveguide grating device, the second rotating arrayed waveguide grating device and the third rotating arrayed waveguide grating device, and increases the operability of the embodiment of the application.
In a possible design, in a ninth implementation manner of the first aspect of the embodiment of the present application, the input ports and the output ports of each of the rotating arrayed waveguide grating devices are arranged in the same order, and the serial numbers of the interconnection ports of each of the rotating arrayed waveguide grating devices are the same. The embodiment of the application limits the input port and the output port of each rotating arrayed waveguide grating device, and increases the implementation modes of the embodiment of the application.
IN a possible design, IN a tenth implementation manner of the first aspect of the embodiment of the present application, the at least three rotating arrayed waveguide grating devices at least include a first rotating arrayed waveguide grating device, a second rotating arrayed waveguide grating device, and a third rotating arrayed waveguide grating device, the first rotating arrayed waveguide grating device, the second rotating arrayed waveguide grating device, and the third rotating arrayed waveguide grating device are connected by an interconnection port, each of the first rotating arrayed waveguide grating device, the second rotating arrayed waveguide grating device, and the third rotating arrayed waveguide grating device has N input ports and N output ports, where N is a positive integer greater than or equal to 3, an output port OUT1(i) of the first rotating arrayed waveguide grating device is connected with an input port IN2(i) of the second rotating arrayed waveguide grating device, an output port OUT2(i) of the second rotary arrayed waveguide grating device is connected with an input port IN3(i) of the third rotary arrayed waveguide grating device, an input port OUT3(i) of the third rotary arrayed waveguide grating device is connected with an output port IN1(i) of the first rotary arrayed waveguide grating device, and i is greater than or equal to 1 and less than or equal to N; the remaining (N-2) ports of the first rotating arrayed waveguide grating device are respectively connected with any one of the switches, the remaining (N-2) ports of the second rotating arrayed waveguide grating device are respectively connected with any one of the switches, and the remaining (N-2) ports of the third rotating arrayed waveguide grating device are respectively connected with any one of the switches. The embodiment of the present application provides a specific connection mode for the interconnection ports of the first rotating arrayed waveguide grating device, the second rotating arrayed waveguide grating device, and increases the realizability of the embodiment of the present application.
In one possible design, in an eleventh implementation manner of the first aspect of the embodiment of the present application, the method includes: including a plurality of switch group in the a plurality of switch, a plurality of switch group is including mated first switch and second switch, first switch with the rotatory array waveguide grating device that the second switch is connected is different, first switch with the port classification that the second switch is connected is different, the port classification includes input port and output port. The plurality of switches are limited in the embodiment of the application, and the logicality of the embodiment of the application is increased.
In the technical solution provided in the embodiment of the present application, a network structure based on a rotating arrayed waveguide grating device includes: at least two rotating arrayed waveguide grating devices and a plurality of switches; each rotary arrayed waveguide grating device is connected with at least one other rotary arrayed waveguide grating device through an interconnection port, the number of input ports and the number of output ports of each rotary arrayed waveguide grating device are the same, and the interconnection port is used for connecting the input ports or the output ports of the other rotary arrayed waveguide grating devices; the other ports of the at least two rotary arrayed waveguide grating devices except the interconnection port are respectively connected with any one of the plurality of switches, the input port is used for acquiring optical signals from the connected switches, and the output port is used for sending the optical signals to the connected switches. The embodiment of the application provides a network structure based on a rotary arrayed waveguide grating device, which is used for solving the problem that the capacity expansion groups of a full-connection network structure have more jumpers, greatly reducing the quantity of the inter-group interconnection optical fibers and realizing the high-availability networking of the network.
Drawings
FIG. 1a is a schematic diagram of a star connection for a fully interconnected network architecture;
FIG. 1b is an equivalent schematic diagram of a fully interconnected network structure;
FIG. 2a is a schematic diagram of dual access of different switches in a rotating arrayed waveguide grating device;
FIG. 2b is a schematic diagram of a jumper connection between conventional rotating arrayed waveguide grating devices;
FIG. 3 is a schematic diagram of a network structure based on a rotating arrayed waveguide grating device according to the present application;
FIG. 4 is another schematic diagram of a network structure based on a rotating arrayed waveguide grating device of the present application;
FIG. 5 is another schematic diagram of a network structure based on a rotating arrayed waveguide grating device according to the present application;
FIG. 6 is a diagram illustrating a specific connection relationship between two rotating arrayed waveguide grating devices according to the present application;
FIG. 7 is a schematic diagram of the connection of two rotating arrayed waveguide grating devices to a switch in the present application;
FIG. 8 is a schematic diagram of the operation of a first rotating arrayed waveguide grating device of the present application;
fig. 9 is another schematic diagram of a network structure based on a rotating arrayed waveguide grating device according to the present application.
Detailed Description
The embodiment of the application provides a network structure based on a rotary arrayed waveguide grating device, which is used for solving the problem that the capacity expansion groups of a full-connection network structure have more jumpers, greatly reducing the quantity of the inter-group interconnection optical fibers and realizing the high-availability networking of the network.
In order to make the technical field better understand the scheme of the present application, the following description will be made on the embodiments of the present application with reference to the attached drawings.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," or "having," and any variations thereof, are intended to cover non-exclusive inclusions, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The network structure based on the rotating arrayed waveguide grating device provided by the embodiment of the application is described below with reference to fig. 3.
As shown in fig. 3, a network structure based on a rotating arrayed waveguide grating device comprises:
at least two rotating arrayed waveguide grating devices 301 and a number of switches 302;
each of the rotating arrayed waveguide grating devices 301 is connected to at least one other rotating arrayed waveguide grating device 301 through an interconnection port 303, the number of input ports and the number of output ports of each of the rotating arrayed waveguide grating devices 301 are the same, and the interconnection port 303 is used for connecting the input ports or the output ports of the other rotating arrayed waveguide grating devices 301;
the ports of the at least two rotary arrayed waveguide grating devices 301 other than the interconnection port 303 are respectively connected to any one of the switches 302, the input port is used for acquiring an optical signal from the connected switch 302, and the output port is used for transmitting the optical signal to the connected switch 302.
As shown in fig. 4, each of the rotating arrayed waveguide grating devices 301 is connected to at least one other rotating arrayed waveguide grating device 301 through a single mode optical fiber 304.
Optionally, each of the rotating arrayed waveguide grating devices 301 is connected to at least one other rotating arrayed waveguide grating device 301 through a single mode fiber 304, and the single mode fiber 304 may be connected with an optical power amplifier 305 in series.
It is understood that if the optical power is not sufficient, the optical power amplifier 305 may be connected in series to the single-mode fiber 304, and the optical power amplifier 305 only amplifies the optical signal transmitted on the single-mode fiber 304, and does not participate in the conversion of the signal, and the port connection and the signal direction do not change.
Referring to fig. 5, the network structure is described in detail when the network structure has two rotating arrayed waveguide grating devices 301, that is, a first rotating arrayed waveguide grating device 3011 and a second rotating arrayed waveguide grating device 3012.
The at least two rotating arrayed waveguide grating devices 301 at least include a first rotating arrayed waveguide grating device 3011 and a second rotating arrayed waveguide grating device 3012, an output port of the first rotating arrayed waveguide grating device 3011 is connected to an input port of the second rotating arrayed waveguide grating device 3012, an input port of the first rotating arrayed waveguide grating device 3011 is connected to an output port of the second rotating arrayed waveguide grating device 3012, and the interconnection port 303 is an input port or an output port for connecting the other rotating arrayed waveguide grating devices;
the ports of the at least two rotary arrayed waveguide grating devices 301 other than the interconnection port 303 are respectively connected to any one of the switches 302, the input port is used for acquiring an optical signal from a connected switch 3021, and the output port is used for transmitting the optical signal to a connected switch 3022.
Referring to fig. 6, a specific connection relationship between the first rotary arrayed waveguide grating device 3011 and the second rotary arrayed waveguide grating device 3012 is shown in fig. 6, in this embodiment, ports with serial number 1 of the first rotary arrayed waveguide grating device 3011 and the second rotary arrayed waveguide grating device 3012 are used as interconnection ports.
The at least two rotating arrayed waveguide grating devices include at least a first rotating arrayed waveguide grating device 3011 and a second rotating arrayed waveguide grating device 3012, the first rotary arrayed waveguide grating device 3011 and the second rotary arrayed waveguide grating device 3012 are connected by an interconnection port 303, the first rotary arrayed waveguide grating device 3011 and the second rotary arrayed waveguide grating device 3012 each have N input ports and N output ports, n is a positive integer greater than or equal to 2, the output port OUT1(1) of the first rotary arrayed waveguide grating device 3011 is connected to the input port IN2(1) of the second rotary arrayed waveguide grating device, an output port IN1(1) of the first rotary arrayed waveguide grating device 3011 is connected to an input port OUT2(1) of the second rotary arrayed waveguide grating device 3012;
the rest (N-1) ports of the first rotating arrayed waveguide grating device are respectively connected with any one of the switches, and the rest (N-1) ports of the second rotating arrayed waveguide grating device are respectively connected with any one of the switches.
Optionally, the input ports and the output ports of each of the rotating arrayed waveguide grating devices 301 are arranged in the same order, and the serial numbers of the interconnection ports 303 of each of the rotating arrayed waveguide grating devices 301 are the same.
Optionally, the switches 302 include a first group of switches connected to the input port of the first rotating arrayed waveguide grating device 3011 and a second group of switches connected to the output port of the second rotating arrayed waveguide grating device 3012, where the first group of switches is configured to send an optical signal to the first rotating arrayed waveguide grating device 3011, and the second group of switches is configured to receive the optical signal from the second rotating arrayed waveguide grating device 3012.
For example, as shown IN fig. 6, the switches connected to the IN1 port are a first group of switches, and the switches connected to the OUT2 port are a second group of switches.
Optionally, the first rotating arrayed waveguide grating device 3011 is configured to obtain an input signal from the first group of switches and convert the input signal into a transition signal, the second rotating arrayed waveguide grating device 3012 is configured to receive the transition signal, and the second rotating arrayed waveguide grating device 3012 is configured to convert the transition signal into an output signal and send the output signal to the second group of switches.
For example, as shown IN fig. 7, through the above connection relationship, the upstream multipath signals of the first group of switches S2-Sn are converted into single-mode optical signals by the wavelength division multiplexing device, and the multipath signals are multiplexed onto 1 pair of optical fibers and uploaded to the first rotating arrayed waveguide grating device 3011 through the input ports IN1(2) -IN 1(n) of the first rotating arrayed waveguide grating device;
the first rotary arrayed waveguide grating device 3011 performs signal recombination on the combined optical signals according to wavelength, combines the optical signals to be interconnected together, and forwards the combined optical signals to an inter-group interconnection port, which is a port OUT1 in fig. 7, during which the conversion process of optical-to-electrical conversion and electrical-to-optical conversion is not performed, and optical signal amplification can be performed directly through an optical fiber amplifier if necessary.
Principle of specific optical signal combination: the first rotating arrayed waveguide grating device functions as a transpose matrix, and as shown IN fig. 8, optical signals of the switch are converted into optical signals λ 1- λ n with different wavelengths through wavelength division multiplexing, and then the optical signals are converged onto an optical fiber to be accessed to a port IN1 of the rotating arrayed waveguide grating device, and are output at a port OUT1 after being converted by the first rotating arrayed waveguide grating device. The transpose matrix satisfies that the input matrix is IN, the output matrix is OUT, OUT ═ f (IN) and IN', as follows:
referring to fig. 9, the network structure is described in detail when the network structure has three rotating arrayed waveguide grating devices 301, including a first rotating arrayed waveguide grating device 3011, a second rotating arrayed waveguide grating device 3012 and a third rotating arrayed waveguide grating device 3013.
The at least three rotating arrayed waveguide grating devices 301 comprise at least a first rotating arrayed waveguide grating device 3011, a second rotating arrayed waveguide grating device 3012 and a third rotating arrayed waveguide grating device 3013, the first rotary arrayed waveguide grating device 3011, the second rotary arrayed waveguide grating device 3012 and the third rotary arrayed waveguide grating device 3013 are connected via an interconnection port 303, the output port of the first rotary arrayed waveguide grating device 3011 is connected to the input port of the second rotary arrayed waveguide grating device 3012, the output port of the second rotary arrayed waveguide grating device 3012 is connected to the input port of the third rotary arrayed waveguide grating device 3013, an output port of the third rotary arrayed waveguide grating device 3013 is connected to an input port of the first rotary arrayed waveguide grating device 3011, the interconnection port 303 is an input port or an output port for connecting other rotary arrayed waveguide grating devices;
the ports of the at least three rotating arrayed waveguide grating devices 301 other than the interconnection port 303 are respectively connected to any one of the switches 302, the input port is used for acquiring an optical signal from the connected switch 302, and the output port is used for transmitting the optical signal to the connected switch 302.
For example, the at least three rotating arrayed waveguide grating devices 301 at least include a first rotating arrayed waveguide grating device 3011, a second rotating arrayed waveguide grating device 3012, and a third rotating arrayed waveguide grating device 3013, the first rotating arrayed waveguide grating device 3011, the second rotating arrayed waveguide grating device 3012, and the third rotating arrayed waveguide grating device 3013 are connected through an interconnection port 303, each of the first rotating arrayed waveguide grating device 3011, the second rotating arrayed waveguide grating device 3012, and the third rotating arrayed waveguide grating device 3013 has N input ports and N output ports, where N is a positive integer greater than or equal to 3, an output port OUT1(1) of the first rotating arrayed waveguide grating device 3011 is connected with an input port IN2(1) of the second rotating arrayed waveguide grating device 3012, an output port OUT2(1) of the second rotary arrayed waveguide grating device 3012 is connected to an input port IN3(1) of the third rotary arrayed waveguide grating device 3013, and an input port OUT3(1) of the third rotary arrayed waveguide grating device 3013 is connected to an output port IN1(1) of the first rotary arrayed waveguide grating device 3011;
the remaining (N-2) ports of the first rotating arrayed waveguide grating device 3011 are respectively connected to any one of the switches 302, the remaining (N-2) ports of the second rotating arrayed waveguide grating device 3012 are respectively connected to any one of the switches 302, and the remaining (N-2) ports of the third rotating arrayed waveguide grating device 3013 are respectively connected to any one of the switches 302.
Optionally, include a plurality of switch group in the a plurality of switch, a plurality of switch group includes first switch and the second switch in pairs, first switch with rotatory arrayed waveguide grating device 301 that the second switch is connected is different, first switch with the port classification that the second switch is connected is different, the port classification includes input port and output port.
For example, the AWGR module has n nodes, for example, when n is 16, that is, when the AWGR module having 16 nodes is expanded by using the existing scheme, the number of inter-group interconnection fibers needs to be increased by 11520 pairs, while only 21 pairs are increased in the scheme of the present application, which can be referred to in detail in table 1.
TABLE 1
| 16 node AWGR module | The existing scheme expands the capacity and increases the logarithm of the optical fiber | The application expands the capacity and increases the logarithm of the optical |
| Capacity expansion | ||
| 2 groups: 2x16 | 16 pairs of |
1 pair of |
| 5 groups of expansion: 5x16 | 4x3x2x1x 16-384 pairs | 4+3+2+1 is 10 pairs |
| Capacity expansion 7 groups: 7x16 | 11520 pairs of 6x5x4x3x2x1x16 | 6+5+4+3+2+1 ═ 21 pairs |
| Capacity expansion n groups: nx16 (n)<16) | (n-1)! x16 pairs | n (n-1)/2 pairs |
The embodiment of the application mainly solves the capacity expansion problem of the fully interconnected network, directly connects the optical fibers among the AWGR modules, realizes the multiplied increase of the network scale of the AWGR modules on the premise of ensuring that the total bandwidth of interconnection among the switches in the network is kept unchanged, and greatly reduces the quantity of the optical fibers connected among the groups.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (6)
1. A network structure based on a rotating arrayed waveguide grating device, comprising:
at least two rotating arrayed waveguide grating devices and a plurality of switches;
each rotary arrayed waveguide grating device is connected with at least one other rotary arrayed waveguide grating device through an interconnection port, the number of input ports and the number of output ports of each rotary arrayed waveguide grating device are the same, and the interconnection port is used for connecting the input ports or the output ports of the other rotary arrayed waveguide grating devices;
the other ports of the at least two rotary arrayed waveguide grating devices except the interconnection port are respectively connected with any one of the plurality of switches, the input port is used for acquiring optical signals from the connected switches, and the output port is used for sending the optical signals to the connected switches;
the network structure can be expanded in a network, the network structure comprises at least three rotating arrayed waveguide grating devices, the rotating arrayed waveguide grating devices at least comprise a first rotating arrayed waveguide grating device, a second rotating arrayed waveguide grating device and a third rotating arrayed waveguide grating device, the first rotating arrayed waveguide grating device, the second rotating arrayed waveguide grating device and the third rotating arrayed waveguide grating device are connected through interconnection ports, an output port of the first rotating arrayed waveguide grating device is connected with an input port of the second rotating arrayed waveguide grating device, an output port of the second rotating arrayed waveguide grating device is connected with an input port of the third rotating arrayed waveguide grating device, an output port of the third rotating arrayed waveguide grating device is connected with an input port of the first rotating arrayed waveguide grating device, the interconnection port is an input port or an output port for connecting other rotary arrayed waveguide grating devices;
the other ports of the at least three rotating arrayed waveguide grating devices except the interconnection port are respectively connected with any one of the plurality of switches, the input port is used for acquiring optical signals from the connected switches, and the output port is used for sending the optical signals to the connected switches.
2. The network structure of claim 1, wherein each of the plurality of rotating arrayed waveguide grating devices is connected to at least one other rotating arrayed waveguide grating device by a single mode optical fiber.
3. The network structure of claim 1, wherein each of the rotating arrayed waveguide grating devices is connected to at least one other rotating arrayed waveguide grating device by a single mode fiber, which may be concatenated with an optical power amplifier.
4. The network structure of claim 1, wherein the input ports and the output ports of each of the rotating arrayed waveguide grating devices are arranged in the same order, and the interconnection ports of each of the rotating arrayed waveguide grating devices are arranged in the same order.
5. The network architecture according to claim 4,
the at least three rotating arrayed waveguide grating devices at least comprise a first rotating arrayed waveguide grating device, a second rotating arrayed waveguide grating device and a third rotating arrayed waveguide grating device, the first rotating arrayed waveguide grating device, the second rotating arrayed waveguide grating device and the third rotating arrayed waveguide grating device are connected through interconnection ports, the first rotating arrayed waveguide grating device, the second rotating arrayed waveguide grating device and the third rotating arrayed waveguide grating device are respectively provided with N input ports and N output ports, N is a positive integer greater than or equal to 3, an output port OUT1i of the first rotating arrayed waveguide grating device is connected with an input port IN2i of the second rotating arrayed waveguide grating device, an output port OUT2i of the second rotating arrayed waveguide grating device is connected with an input port IN3i of the third rotating arrayed waveguide grating device, the input port OUT3i of the third rotary arrayed waveguide grating device is connected with the output port IN1i of the first rotary arrayed waveguide grating device, and i is greater than or equal to 1 and less than or equal to N;
the rest N-2 ports of the first rotary arrayed waveguide grating device are respectively connected with any one of the plurality of switches, the rest N-2 ports of the second rotary arrayed waveguide grating device are respectively connected with any one of the plurality of switches, and the rest N-2 ports of the third rotary arrayed waveguide grating device are respectively connected with any one of the plurality of switches.
6. Network architecture according to any of claims 1 to 4, characterized in that it comprises:
including a plurality of switch group in the a plurality of switch, a plurality of switch group is including mated first switch and second switch, first switch with the rotatory array waveguide grating device that the second switch is connected is different, first switch with the port classification that the second switch is connected is different, the port classification includes input port and output port.
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| CN1745529A (en) * | 2003-02-13 | 2006-03-08 | 日本电信电话株式会社 | Optical communication network system |
| CN106817288A (en) * | 2015-11-30 | 2017-06-09 | 华为技术有限公司 | A kind of data centre network system and signal transmission system |
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| CN1745529A (en) * | 2003-02-13 | 2006-03-08 | 日本电信电话株式会社 | Optical communication network system |
| CN106817288A (en) * | 2015-11-30 | 2017-06-09 | 华为技术有限公司 | A kind of data centre network system and signal transmission system |
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