CN116320845B - Flattened data exchange method and system based on optical switch - Google Patents
Flattened data exchange method and system based on optical switch Download PDFInfo
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Abstract
The application discloses a flattened data exchange method and a flattened data exchange system based on an optical switch. The application loads data signals on optical carriers with different wavelengths based on the wavelength division multiplexing technology, and forms a novel topological structure and a data exchange network through the combination interconnection of the optical switch unit and a plurality of wavelength division multiplexers. The application provides a high-bandwidth low-energy-consumption expandable data exchange method and system based on an all-optical exchange network, which remarkably improve the transmission capacity of the optical network.
Description
Technical Field
The application relates to the technical field of network interconnection and optical switching, in particular to a flattened data switching method and system based on an optical switch.
Background
With the popularization of cloud computing, media video, unmanned and other applications, the network scale of the data center is continuously expanding, the data flow of a warehouse-level large-scale data center comprising tens of thousands or even hundreds of thousands of servers is rapidly increased, and the development of a new generation of large data center is urgently needed to provide a powerful support for the development of digital economy. The application scene requires the chip to process massive data in real time and rapidly switch, namely, flexible route exchange is realized on the basis of ultra-large data capacity. With the increase of data exchange volume among nodes in a large-scale data center in an exponential form, the traditional optical-electrical-optical information exchange form has an electronic bottleneck in terms of data transmission speed and power consumption, and the scalability of the optical exchange node in the large-scale data center is severely restricted by the exchange form. In order to meet the increasing demand, the data transmission in the data center increasingly tends to adopt an all-optical switching mode, and the node power consumption and the transmission delay are reduced by adopting an optical switching integrated chip technology.
Aiming at the electronic bottleneck problems of the optical-electrical-optical information exchange form in the related technology in terms of data transmission speed and power consumption, no effective solution is proposed at present.
Disclosure of Invention
The application aims to provide a flattened data exchange method and system based on an optical switch, which are used for overcoming the defects in the prior art. In order to achieve the above purpose, the technical scheme provided by the application is as follows:
in a first aspect, in this embodiment, there is provided an optical switch-based flattened data switching system, where the optical switch-based flattened data switching system includes m×n data nodes, a multi-wavelength light source module, a clock control module, and N optical switch modules;
the data nodes comprise data transmitting nodes and data receiving nodes;
the multi-wavelength light source module comprises a multi-wavelength light source unit, a 1 xMN power divider unit, an optical amplifying unit and M x N optical signal delay compensation units; the multi-wavelength light source module is connected with the M multiplied by N data transmitting nodes and is used for providing an optical frequency comb light source at least comprising N paths of wavelengths for each data transmitting node;
the clock control module comprises a clock unit and a control unit; the clock unit is respectively connected with the M multiplied by N data nodes and the control unit and is used for providing synchronous clock signals; the control unit is provided with N electric signal output ports, is connected with N optical switch modules and is used for controlling the working states of the N optical switch modules;
the optical switch module comprises an optical switch unit and M optical wavelength division multiplexers; the optical switch unit is provided with M data signal optical input ports, is connected with the output ports of the M data transmitting nodes and is used for receiving optical signals transmitted by the M data transmitting nodes; the optical switch unit is provided with M data signal optical output ports, and the data signal optical output ports are connected with the M optical wavelength division multiplexers one by one; and the routing signal electric input port is arranged and connected with the control unit.
In some embodiments, the data transmitting node comprises a data storage unit, two optical wavelength division multiplexers and N modulators;
one of the optical wavelength division multiplexers is respectively connected with the multi-wavelength light source module and the N modulators, and is used for performing wavelength demultiplexing on the optical frequency comb light sources transmitted to the data transmitting node by the multi-wavelength light source module and transmitting N paths of demultiplexed single-wavelength light to the N modulators one by one;
the data storage unit is connected with the N modulators and is used for respectively providing data signals for the N modulators;
the other optical wavelength division multiplexer is respectively connected with N modulators and one data signal optical input port of the optical switch unit and is used for transmitting N paths of signal lights coded by the N modulators to the optical switch module.
In some embodiments, the data transmitting node may implement transmission of N optical signals with different wavelengths, specifically: wavelength demultiplexing is carried out on the optical frequency comb light source transmitted by the multi-wavelength light source module through the optical wavelength division multiplexer; n modulators encode light of each wavelength after obtaining loading data through the data storage unit; and the N paths of signal light are output through the optical wavelength division multiplexer.
In some of these embodiments, the optical switch unit includes a cross-over operating state and a pass-through operating state.
In some embodiments, the data receiving node comprises a data receiving unit and an N-way photodetector; the data receiving unit is connected with the N photoelectric detectors and is used for receiving signals of the N photoelectric detectors;
the N photoelectric detectors are respectively connected with one optical output end of one optical wavelength division multiplexer of the N optical switch modules and are used for receiving single-wavelength transmission data output by the N optical switch modules.
In some embodiments, an optical signal delay compensation unit is disposed in an optical fiber link between the data node and the optical switch module, so as to control a time deviation of the data exchanged by each node to reach the optical switch.
In some of these embodiments, the multi-wavelength light source unit comprises a multi-wavelength laser, a mode-locked laser, a femtosecond laser, an optical frequency comb generator, or an optical soliton optical frequency comb generator.
In some embodiments, the optical switch unit comprises a silicon-based optical switch chip, a MEMS optical switch chip, and a MEMS optical switch;
in some of these embodiments, the optical switch unit comprises a large optical switch unit or a small optical switch unit; the optical switch unit also comprises a high-speed optical switch unit or a low-speed optical switch unit, and is used for adapting to different application scenes;
in some of these embodiments, the optical wavelength division multiplexer includes an arrayed waveguide grating, an etched diffraction grating, and a lattice filter;
in a second aspect, in this embodiment, there is provided a flattened data exchange method based on an optical switch, including the steps of:
the multi-wavelength light source unit generates optical frequency comb signals at least comprising N paths of wavelengths, and the optical frequency comb signals are transmitted to M multiplied by N data transmitting nodes after passing through the optical amplifying unit, the power divider unit and the M multiplied by N optical signal delay compensation units;
the nth data transmitting node loads transmission data to the N paths of wavelength channels of the nth optical frequency comb signals and transmits the transmission data to the optical switch module;
the clock unit sends out synchronous clock signals to all data nodes and the control unit;
the control unit sends out N paths of control signals to control the working states of the N optical switch units;
the optical signal output by the mth data output port of the nth optical switch unit is demultiplexed by the optical wavelength division multiplexer to output data of an N Lu Bo long channel;
the N optical switch modules respectively transmit one path of optical signal to the nth data receiving node.
In some embodiments, the N-th data transmitting node loads transmission data to the N-th wavelength channels of the N-th optical frequency comb signal and transmits the data to the optical switch module, and the method includes:
the optical frequency comb signal is decomposed into N Lu Bo long channels through a wavelength division multiplexer;
the nth modulator encodes the light with the nth wavelength after obtaining the loading data through the data storage unit;
the N-path wavelength signals are output to one optical input port of the optical switch unit after being combined by the wavelength division multiplexer.
In some embodiments, the N optical switch modules respectively transmit one optical signal to an nth data receiving node, including:
the nth optical switch module transmits a path of single-wavelength optical signal to the nth photoelectric detector;
the N paths of photoelectric detectors acquire data and then transmit the data to the data receiving unit.
Compared with the prior art, the flattened data exchange method and system based on the optical switch provided in the embodiment generate optical frequency comb signals at least comprising N paths of wavelengths through the multi-wavelength light source unit, and transmit the optical frequency comb signals to M multiplied by N data transmitting nodes after passing through the optical amplifying unit, the power divider unit and the M multiplied by N optical signal delay compensation units; the nth data transmitting node loads transmission data to the N paths of wavelength channels of the nth optical frequency comb signals and transmits the transmission data to the optical switch module; the clock unit sends out synchronous clock signals to all data nodes and the control unit; the control unit sends out N paths of control signals to control the working states of the N optical switch units; the optical signal output by the mth data output port of the nth optical switch unit is demultiplexed by the optical wavelength division multiplexer to output data of an N Lu Bo long channel; the N optical switch modules respectively transmit one path of optical signal to the nth data receiving node, so that the problem that electronic bottlenecks exist in the aspects of data transmission speed and power consumption in the optical-electrical-optical information exchange form in the related technology is solved, and the capacity of data exchange is greatly improved while the power consumption and transmission delay of the nodes of the data exchange are reduced.
The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the other features, objects, and advantages of the application.
Drawings
FIG. 1 is a schematic diagram of a flattened optical switch-based data switching system in accordance with the present application;
FIG. 2 is a schematic diagram of a multi-wavelength light source module of the flattened data switching system based on an optical switch in the present application;
FIG. 3 is a schematic diagram of the clock control module of the optical switch-based flattened data switching system of the present application;
FIG. 4 is a schematic diagram of an optical switch module of the flattened optical switch-based data switching system of the present application;
FIG. 5 is a schematic diagram of a data transmitting node of an optical switch-based flattened data switching system in accordance with the present application;
fig. 6 is a schematic diagram of a data receiving node of the flattened data switching system based on an optical switch in the present application.
Reference numerals: 11. a data node; 12. a multi-wavelength light source module; 13. a clock control module; 14. an optical switch module; 21. a multi-wavelength light source unit; 22. an optical amplifying unit; 23. a power divider unit; 24. an optical signal delay compensation unit; 311. a clock unit; 312. a control unit; 41. an optical switching unit; 42. an optical wavelength division multiplexer; 51. a first array of waveguide gratings; 52. a second arrayed waveguide grating; 53. a Mach-Zehnder modulator; 54. a data storage unit; 61. a photodetector; 62. and a data receiving unit.
Detailed Description
The present application will be further described in detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent.
Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms "a," "an," "the," "these" and similar terms in this application are not intended to be limiting in number, but may be singular or plural. The terms "comprising," "including," "having," and any variations thereof, as used herein, are intended to encompass non-exclusive inclusion; for example, a process, method, and system, article, or apparatus that comprises a list of steps or modules (units) is not limited to the list of steps or modules (units), but may include other steps or modules (units) not listed or inherent to such process, method, article, or apparatus. The terms "connected," "coupled," and the like in this disclosure are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as used herein means two or more. "and/or" describes an association relationship of an association object, meaning that there may be three relationships, e.g., "a and/or B" may mean: a exists alone, A and B exist together, and B exists alone. Typically, the character "/" indicates that the associated object is an "or" relationship. The terms "first," "second," "third," and the like, as referred to in this disclosure, merely distinguish similar objects and do not represent a particular ordering for objects.
Referring to fig. 1, in the optical switch-based flattened data switching system of the present application, the optical switch-based flattened data switching system includes m×n data nodes 11, a multi-wavelength light source module 12, a clock control module 13, and N optical switch modules 14. Referring to fig. 2 in detail, the multi-wavelength light source module includes a multi-wavelength light source unit 21, an optical amplifying unit 22, a power divider unit 23, and m×n optical signal delay compensating units 24.
The multi-wavelength light source unit 21 may be a multi-wavelength laser, a mode-locked laser, a femtosecond laser, an optical frequency comb generator, an optical soliton optical frequency comb generator, or the like. In this embodiment, a mode-locked laser, an optical fiber amplifier, a 1×mn optical fiber power divider and an optical signal delay compensation unit are selected to form a multi-wavelength light source module, which is connected to m×n data transmitting nodes, and is configured to provide an optical frequency comb light source at least including N wavelengths for each data transmitting node.
The clock control module 13, see fig. 3, includes a clock unit 311 and a control unit 312. The clock unit is connected with the MxN data nodes and a control unit and is used for providing synchronous clock signals which are respectively sent to the data transmitting nodes and the data receiving nodes of the data nodes and the control unit under the clock control module and used for guaranteeing the synchronism of data exchange; the control unit is provided with N electric signal output ports which are connected with N optical switch modules and used for controlling the working states of the N optical switch modules.
The clock control module sends the synchronous clock signal to the data nodes, so that the synchronism of data exchange among the modules is improved, and the data exchange efficiency of the system is further improved.
The optical switch module 14, see fig. 4 in detail, includes an optical switch unit 41 and M optical wavelength division multiplexers 42. Wherein, the optical switch unit can be silicon-based optical switch chip, MEMS optical switch, etc.; the optical wavelength division multiplexer may be an Arrayed Waveguide Grating (AWG), an Etched Diffraction Grating (EDG), a lattice filter (lattice filter), or the like. The optical switch module in this embodiment is composed of a silicon-based optical switch chip and an arrayed waveguide grating. The silicon-based optical switch chip is provided with M data signal optical input ports, is connected with output ports of M data transmitting nodes and is used for receiving optical signals transmitted by M data transmitting nodes; the optical fiber array waveguide grating is provided with M data signal optical output ports which are connected with M array waveguide gratings one by one; and the routing signal electric input port is arranged and connected with the control unit.
The optical switch module adopts the mode of optical switch unit combination interconnection to realize data exchange among multiple nodes of the data center, the device link is simple and flexible, the expandability is strong, and the data exchange capacity is greatly improved.
Aiming at the problem that the port of an optical switch in a large-scale flattened data exchange network is limited in the related art, the application provides a flattened data exchange system based on the optical switch, which can better meet the application requirements of a data center and the optical network. The flattened data exchange system based on the optical switch is based on the wavelength division multiplexing technology, combines the optical switching device and the interconnection of the plurality of wavelength division multiplexers, provides an effective solution for the electronic bottleneck problem in the aspects of data transmission speed and power consumption of the optical-electric-optical information exchange form in the prior art, and simultaneously greatly improves the data exchange capacity.
The data nodes include data transmitting nodes and data receiving nodes. The data transmitting node, see fig. 5, includes a first arrayed waveguide grating 51, a second arrayed waveguide grating 52, N mach-zehnder modulators 53, and a data storage unit 54; the first array waveguide grating 51 is respectively connected with the multi-wavelength light source module and the N mach-zehnder modulators, and is used for performing wavelength demultiplexing on the optical frequency comb light source transmitted to the data transmitting node by the multi-wavelength light source module, and transmitting the demultiplexed N paths of single-wavelength light to the N mach-zehnder modulators one by one; the data storage unit is connected with the N Mach-Zehnder modulators and is used for respectively providing data signals for the N modulators; the second arrayed waveguide grating 52 is connected to one data signal optical input port of the N mach-zehnder modulators and the silicon-based optical switching unit, and is configured to transmit N signal lights encoded by the N modulators to the optical switching module. In conclusion, the data transmitting node can realize the transmission of N paths of optical signals with different wavelengths. Specifically, an optical frequency comb light source enters a data transmitting node and is demultiplexed into N paths of wavelength channels after passing through an array waveguide grating. The N Mach-Zehnder modulators respectively encode N wavelengths of light after obtaining the loading data through the data storage unit. And finally, the N paths of signal light are connected into the arrayed waveguide grating to be output in a combined mode. Finally, at the data transmitting node, the data signals are loaded one by the light with the length of N Lu Bo and output in a combined mode.
The data receiving node, see fig. 6 in detail, comprises N-way photodetectors 61 and a data receiving unit 62; the data receiving unit is connected with the N photoelectric detectors and is used for receiving signals of the N photoelectric detectors; the N photoelectric detectors are respectively connected with one optical output end of one optical wavelength division multiplexer of the N optical switch modules and are used for receiving single-wavelength transmission data output by the N optical switch modules. As shown in the 1 st data receiving node in fig. 6, the N photodetectors are connected to the 1 st arm of the 1 st arrayed waveguide grating connected from the 1 st optical switch chip to the N optical switch chip through optical fibers, respectively. Regarding the Mth data receiving node, N photoelectric detectors are respectively connected with a No. 1 arm of an Mth arrayed waveguide grating connected with the 1 st optical switch chip to the Nth optical switch chip through optical fibers; regarding the Mth data receiving node, N photodetectors are respectively connected with N arms of the Mth arrayed waveguide grating connected with the 1 st optical switch chip to the Nth optical switch chip through optical fibers. In summary, each data receiving node may exchange data with mxn data transmitting nodes. Specifically, the M data signal light output ports of each silicon-based optical switch chip are respectively connected with an arrayed waveguide grating. Through each array waveguide grating, N paths of data optical signals transmitted by one data transmitting node can be correspondingly received. The data receiving node can be used for receiving single-wavelength transmission data which is output by the N optical switch chips and demultiplexed by the array waveguide grating.
The silicon-based optical switch chip is provided with a routing signal electric input port and is connected with the control chip. The silicon-based optical switch chip of the MxM port has M-! The working state of each silicon-based optical switch chip is independently controlled by an electric signal sent by the control chip. The M×N data transmitting nodes are connected to the signal light input ports of the silicon-based optical switch chips with N M×M ports one by one. With the above structure, the optical signals of the M data transmitting nodes connected to the same silicon-based optical switch chip can be output from any data output port of the optical switch chip.
The application realizes large-scale and flattened data exchange based on the wavelength division multiplexing technology by the combined interconnection structure of the data nodes and the optical switches, and improves the data transmission efficiency.
The embodiment also provides a flattened data exchange method based on an optical switch, which is used for realizing the embodiment and the preferred implementation, and is not described in detail.
A flattened data exchange method based on an optical switch specifically comprises the following steps:
step S1: the mode-locked laser generates optical frequency comb signals at least comprising N paths of wavelengths, and the optical frequency comb signals are transmitted to M x N data transmitting nodes through an optical fiber amplifier, a 1 x MN optical fiber power divider and M x N optical signal delay compensation units;
step S2: the nth data transmitting node (mn takes 1,2 … … MXN) loads transmission data to the N-path wavelength channels of the nth optical frequency comb signals and transmits the transmission data to the silicon-based optical switch chip;
step S3: the clock unit sends out synchronous clock signals to all data nodes and the control unit;
step S4: the control unit chip sends out N paths of control signals to control the working states of the N silicon-based optical switch chips;
step S5: the optical signal output by the mth (M is 1,2 … … M) data output port of the nth (N is 1,2 and … … N) silicon-based optical switch chip is demultiplexed by the arrayed waveguide grating to output data of N Lu Bo long channels;
step S6: the N optical switch modules respectively transmit one path of optical signal to the nth (mn takes 1,2 … … MXN) data receiving nodes;
the step S2 specifically includes the following sub-steps:
step S21: the optical frequency comb signal is decomposed into N paths of wavelength channels through the array waveguide grating;
step S22: the nth path (N is 1,2 … … N) Mach-Zehnder modulator encodes the light with the nth path wavelength after obtaining the loading data through the data storage unit;
step S23: the N-path wavelength signals are output to an optical input port of the silicon-based optical switch chip after being combined by the array waveguide grating;
the step S6 specifically comprises the following sub-steps:
step S61: an nth (N is 1,2 … … N) optical switch chip transmits a path of single-wavelength optical signal to an nth (N is 1,2 … … N) photoelectric detector through the array waveguide grating;
step S62: the N paths of photoelectric detectors acquire data and then transmit the data to the data receiving unit.
Compared with the related art, the flattened data exchange method and system based on the optical switch provided in the embodiment are based on the wavelength division multiplexing technology, and are combined with the interconnection of the optical switch unit and the plurality of wavelength division multiplexing units, so that an effective solution is provided for the electronic bottleneck problem in the aspects of data transmission speed and power consumption of the optical-electrical-optical information exchange form in the prior art; the data exchange among the multiple nodes of the data center is realized by adopting a mode of combining and interconnecting the optical switch units, the device has simple and flexible links and strong expandability, and the exchange capacity of the data is greatly improved.
It should be understood that the above-described embodiments are merely illustrative of the optical switch-based flattened data interchange method and system of the present application and are not intended to be limiting thereof. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure in accordance with the embodiments provided herein.
The term "embodiment" in this disclosure means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive. It will be clear or implicitly understood by those of ordinary skill in the art that the embodiments described in the present application can be combined with other embodiments without conflict.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the patent claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.
Claims (10)
1. The flattened data exchange system based on the optical switch is characterized by comprising M multiplied by N data nodes, a multi-wavelength light source module, a clock control module and N optical switch modules, wherein M and N are positive integers larger than 1;
the data nodes comprise data transmitting nodes and data receiving nodes;
the data transmitting node comprises a data storage unit, two optical wavelength division multiplexers and N modulators; one of the optical wavelength division multiplexers is respectively connected with the multi-wavelength light source module and the N modulators and is used for performing wavelength demultiplexing on the optical frequency comb light source transmitted to the data transmitting node by the multi-wavelength light source module and transmitting N paths of demultiplexed single-wavelength light to the N modulators one by one; the data storage unit is connected with the N modulators and is used for respectively providing data signals for the N modulators; the other optical wavelength division multiplexer is respectively connected with N modulators and one data signal optical input port of the optical switch unit and is used for transmitting N paths of signal lights coded by the N modulators into the optical switch module;
the data receiving node comprises a data receiving unit and N paths of photoelectric detectors; the data receiving unit is connected with the N photoelectric detectors and is used for receiving signals of the N photoelectric detectors; the N photoelectric detectors are respectively connected with one optical output end of one optical wavelength division multiplexer of the N optical switch modules and are used for receiving single-wavelength transmission data output by the N optical switch modules;
the multi-wavelength light source module comprises a multi-wavelength light source unit, a 1 xMN power divider unit, an optical amplifying unit and M x N optical signal delay compensation units; the multi-wavelength light source module is connected with the M multiplied by N data transmitting nodes and is used for providing an optical frequency comb light source at least comprising N paths of wavelengths for each data transmitting node;
the clock control module comprises a clock unit and a control unit; the clock unit is respectively connected with the M multiplied by N data nodes and the control unit and is used for providing synchronous clock signals; the control unit is provided with N electric signal output ports, is connected with N optical switch modules and is used for controlling the working states of the N optical switch modules;
the optical switch module comprises an optical switch unit and M optical wavelength division multiplexers; the optical switch unit comprises M data signal optical input ports, is connected with the output ports of M data transmitting nodes and is used for receiving optical signals transmitted by the M data transmitting nodes; the optical switch unit comprises M data signal optical output ports, and the data signal optical output ports are connected with the M optical wavelength division multiplexers one by one; and the routing signal electric input port is arranged and connected with the control unit.
2. The flattened optical switch-based data switching system of claim 1 wherein the data transmitting node is configured to transmit N optical signals of different wavelengths, specifically: wavelength demultiplexing is carried out on the optical frequency comb light source transmitted by the multi-wavelength light source module through the optical wavelength division multiplexer; after N modulators obtain loading data through the data storage unit, respectively encoding light of each wavelength; and the N paths of signal light are output through the optical wavelength division multiplexer.
3. The optical switch-based flattened data switching system of claim 1 wherein the optical switch unit includes a cross-over operating state and a pass-through operating state.
4. The optical switch-based flattened data switching system of claim 1 wherein an optical signal delay compensation unit is disposed in an optical fiber link between the data node and the optical switch module; the optical signal delay compensation unit is used for controlling the time deviation of the data exchange of each node to the optical switch.
5. The optical switch-based flattened data switching system of claim 1 wherein the multi-wavelength light source unit comprises a multi-wavelength laser, a mode-locked laser, a femtosecond laser, an optical frequency comb generator, or an optical soliton optical frequency comb generator.
6. The optical switch-based flattened data switching system of claim 1 wherein the optical switch unit comprises a silicon-based optical switch chip, a MEMS optical switch chip, and a MEMS optical switch.
7. The optical switch-based flattened data switching system of claim 1 wherein the optical wavelength division multiplexer comprises an arrayed waveguide grating, an etched diffraction grating, and a lattice filter.
8. A flattened data switching method based on an optical switch, applied to the flattened data switching system based on an optical switch as recited in claim 1, comprising:
the multi-wavelength light source unit generates optical frequency comb signals at least comprising N paths of wavelengths, and the optical frequency comb signals are transmitted to M multiplied by N data transmitting nodes after passing through the optical amplifying unit, the power divider unit and the M multiplied by N optical signal delay compensation units;
the nth data transmitting node loads transmission data to the N paths of wavelength channels of the nth optical frequency comb signals and transmits the transmission data to the optical switch module;
the clock unit sends out synchronous clock signals to all data nodes and the control unit;
the control unit sends out N paths of control signals to control the working states of the N optical switch units;
the optical signal output by the mth data output port of the nth optical switch unit is demultiplexed by the optical wavelength division multiplexer to output data of an N Lu Bo long channel;
the N optical switch modules respectively transmit one path of optical signal to the nth data receiving node.
9. The method for optical switch-based flattened data switching as recited in claim 8 wherein the nth data transmitting node loads transmission data for the N wavelength channels of the nth optical frequency comb signal and transmits the transmission data to the optical switch module, comprising:
the optical frequency comb signal is decomposed into N Lu Bo long channels through a wavelength division multiplexer;
the nth modulator encodes the light with the nth wavelength after obtaining the loading data through the data storage unit;
the N-path wavelength signals are output to one optical input port of the optical switch unit after being combined by the wavelength division multiplexer.
10. The optical switch-based flattened data switching method of claim 9 wherein the N optical switch modules each transmit an optical signal to an nth data receiving node, comprising:
the nth optical switch module transmits a path of single-wavelength optical signal to the nth photoelectric detector;
the N paths of photoelectric detectors acquire data and then transmit the data to the data receiving unit.
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