93 results about "Wavelength channels" patented technology

The invention provides a dynamic wavelength allocation method based on DCI wavelength division II type equipment. The method comprises the following steps: acquiring an occupation state and a transmission quality index of each wavelength channel of a current network; establishing a wavelength channel quality evaluation model, and scoring each wavelength channel according to the transmission quality index of each wavelength channel of the network; according to the bandwidth requirement, the priority and the QoS requirement of the service request, generating a traffic characteristic matrix containing the delay sensitivity and the bandwidth requirement through a traffic prediction algorithm; based on a network state and the traffic characteristic matrix, through resource availability calculation and path quality evaluation, forming an allocable wavelength resource pool and a quality score thereof; for the allocatable wavelength resource pool, generating an optimal wavelength allocation scheme by adopting an improved heuristic algorithm and comprehensively considering the resource utilization rate, the signal quality and the service priority; and according to the performance feedback of the optimal wavelength allocation result and the network state change, continuous optimization of wavelength allocation is realized through a self-adaptive adjustment mechanism. The method can effectively deal with the dynamic flow change in the DCI network, improve the resource utilization rate, ensure the signal quality and meet the QoS requirement of the service, thereby providing an efficient and reliable wavelength allocation solution for the data center interconnection network.

The invention discloses an underwater navigation positioning method and system based on supercontinuum laser intensity correlation. The system comprises a master control system, a transmitting end underwater base station and a receiving end underwater carrier. The method comprises the following steps: firstly, a main control system generates a super-continuum laser signal with pseudo-random code information, the super-continuum laser signal is separated into optical signals of different wavelength channels through a light splitting module, and the optical signals are respectively sent to underwater base stations uniquely corresponding to the wavelength channels and are emitted; then the underwater carrier receives optical signals from a plurality of base stations, identifies a signal source base station according to wavelength identification, performs correlation operation with a locally copied pseudo-random code sequence, determines signal arrival time TOA and calculates a pseudo-range; and finally, resolving the three-dimensional coordinate and local clock error result of the underwater carrier by combining the pseudo-ranges, absolute positions and transmission delays of the underwater carrier and the at least four base stations. According to the invention, high-precision and high-robustness absolute positioning of the underwater environment is realized, and the reliability of long-time positioning and navigation of the underwater robot is enhanced.

The invention discloses a system and a method for realizing positive and negative weighting in an optical domain, and the system comprises a multi-wavelength light source array which provides multi-channel optical signals, and each wavelength corresponds to an input channel; the adjustable bias photoelectric modulator arrays are in one-to-one correspondence with the light sources, a quiescent working point is biased in a positive / negative slope linear region of a transmission curve through an independent bias circuit, positive and negative weight symbol control is realized, and an input electric signal is loaded; the multi-wavelength micro-ring weighting unit is used for weighting the modulated optical signal by regulating and controlling the transmissivity of the micro-ring; the photoelectric detection unit adopts a single-path detector to receive a composite optical signal and convert the composite optical signal into an electric signal; and the capacitor blocking and signal synthesis unit filters a direct current component, synthesizes an alternating current weighted signal and outputs a real number weighted sum. The system does not need to balance detectors and redundant devices, simplifies hardware architecture, reduces cost and size, reduces power consumption, improves weighting precision and reliability, supports flexible expansion of multi-wavelength channels, adapts to requirements of a large-scale optical neural network, and provides support for optical calculation integration and low-power-consumption landing.

The invention provides a network topology relation graph dynamic generation method, which belongs to the technical field of network topology, and comprises the following steps: starting an improved Tarjan strong connectivity component algorithm in each subnet partition to carry out loop detection, executing distributed loop verification on cross-subnet boundary nodes, collecting ARP table entries, routing table entries, OpenFlow flow tables and virtualization platform interface data, and sending the ARP table entries, the routing table entries, the OpenFlow flow tables and the virtualization platform interface data to each subnet partition; the method comprises the following steps: performing power spectrum analysis on an optical power monitoring point on optical network equipment to identify a wavelength channel occupancy state, reconstructing a wavelength routing path of a DWDM system, and performing two-stage submission on topological data acquired by distributed detection nodes by adopting a causal consistency protocol to synchronously generate a global unified network topological relation graph; the technical problems that the incremental updating efficiency is low and the cross-layer mapping relation is difficult to reconstruct in real time when the network topology dynamically changes are solved.

A reconfigurable optical add / drop multiplexer using a wavelength selective switch (WSS) component to multiplex wavelength channels into a wavelength division multiplexed (WDM) signal. When a given channel is dropped, an amplified spontaneous emission (ASE) injection signal is multiplexed as a ghost channel into the WDM signal. The ASE injection channel can mitigate polarization hole burning and can provide a fuller power spectrum density. However, the ASE injection channel also defines a monitoring window. As an optical channel monitor (OCM) monitors the WDM signal, the OCM can detect, within the monitoring window, any underlying characteristic of the given wavelength channel. In this instance in response to the detected characteristic, the WSS component switches from multiplexing the ghost channel into the WDM signal to multiplexing the given wavelength channel into the WDM signal.

This application discloses a method for simultaneous monitoring and intelligent calibration of multi-component gas NDIR, relating to the field of gas detection technology. It solves the technical problem of low accuracy in gas concentration detection results caused by overlapping absorption spectra between different gases in existing non-dispersive infrared gas detection technologies. The method includes: determining several first and second detection gases based on spectral absorption data; a first wavelength channel corresponding to the first detection gas; calculating the gas concentration of the first detection gas corresponding to the first spectral signal based on the first spectral signal and the incident spectral signal; selecting several interfering gases corresponding to each second detection gas based on the gas concentrations corresponding to the several first detection gases, and determining the second wavelength channel of the second detection gas; calculating the corresponding gas concentration of the second detection gas based on the second spectral signal, the incident spectral signal, and the gas concentrations corresponding to the interfering gases; thus improving the detection accuracy of gas concentration.

This invention discloses a wavelength-tunable dual-cavity ultrafast fiber laser based on rotating optical fibers and its control method, relating to the field of laser technology. The dual-cavity ultrafast fiber laser of this invention integrates a wavelength division multiplexer within a dual-ring resonant cavity, structurally integrating two wavelength channels, each containing an independent gain fiber, to achieve dual-color soliton output and reduce gain competition. By setting an adjustable rotating fiber filter, consisting of a polarization controller, rotating optical fibers, and a polarization-dependent isolator, in the multiplexing section, the center wavelength of both wavelengths is tunable. Simultaneously, the two sub-cavities share the same saturable absorber to achieve passive synchronous mode-locking, and a delay line is introduced into one of the channels to adjust the equivalent cavity length, achieving repetition frequency matching and timing alignment between the two sub-cavities, thereby obtaining stable, tunable, and synchronous dual-wavelength ultrashort pulse output.

A method for identifying an unknown target in a complex environment by using an all-optical diffraction neural network is characterized in that the adopted all-optical diffraction neural network is composed of multiple layers of phase-type diffraction optical elements, multiple wavefront regulation and control can be performed on a light field corresponding to an input image, and classification and identification of the image are completed in an optical domain after diffraction propagation of a certain distance; on the basis of a diffraction neural network, an anti-interference recognition mechanism is provided, concepts of a target object and an interferent which need to be specifically classified are provided in a diffraction neural network training stage, and a loss function and a constraint condition are set respectively; in combination with a wavelength multiplexing mechanism, different target object classification tasks are independently processed under different wavelength channels, so that classification results of all wavelength channels are integrated in a full-wave band range, the classification task of unknown targets in a complex environment is realized, and the advantages of high speed and low energy consumption of the all-optical diffraction neural network are exerted. The limitations of simple application scene, small target number and the like of the optical neural network are overcome.

The application provides an optical signal synchronous calibration device and method of an optical computing system, the device comprising: an optical probe array arranged on a chip, an AI coprocessor, an optical path tuning engine and a low-speed electrical feedback line arranged on a board card; the optical probe array detects optical signals of wavelength channels corresponding to a plurality of optical computing units and converts the optical signals into electrical signals; the AI coprocessor drives the corresponding optical computing unit to emit a detection pulse according to a pre-allocated time slot index variable, extracts a phase error from the electrical signal and calculates a final calibration quantity based on the phase error; the optical path tuning engine performs an optical path tuning operation based on the final calibration quantity to calibrate the error of the corresponding optical computing unit; and the low-speed electrical feedback line transmits the electrical signal to the AI coprocessor and transmits the detection pulse to the chip. The application realizes real-time calibration in a dynamic environment through spatial distributed detection and board-level centralized processing cooperation.

The invention discloses an ultra-parallel microwave photon Isin machine system based on wavelength division multiplexing and an optimization method, and belongs to the technical field of photon calculation and combination optimization. The Isin machine system comprises a multi-wavelength light source module, a microwave modulation and wavelength division multiplexing coding module, a nonlinear calculation and evolution module and a demultiplexing and dynamic feedback module, all the modules are optically and electrically connected to form a closed-loop system, and different optimization problems can be coded to independent wavelength channels to achieve parallel solving. The optimization method is applied to the Isin machine system, and closed-loop optimization is completed through the steps of coupling matrix mapping, microwave modulation loading, nonlinear evolution, dynamic feedback control and the like. The method supports synchronous processing of 1024 optimization problems, and energy consumption of a single problem is lt; the method is mainly applied to the fields of logistics scheduling, financial modeling, communication network optimization and the like, and an efficient physical calculation solution is provided for a large-scale combination optimization problem.

This invention discloses a quantitative analysis system and method for overlapping gas components, belonging to the field of gas analysis and vacuum diagnostics technology. The system comprises: a vacuum chamber to be tested, a first valve connection, and a differential device connected in sequence; the differential device is connected to a mass spectrometry detection unit, a spectral detection unit, and a vacuum pump unit; the mass spectrometry detection unit is used to acquire ion current signals of the analyte gas in multiple mass-to-charge ratio channels; the spectral detection unit is used to acquire characteristic spectral signals of the analyte gas in multiple wavelength channels; a data processing and calculation unit is communicatively connected to the mass spectrometry detection unit and the spectral detection unit, respectively, to obtain and output the partial pressure or concentration of each candidate gas component. Overlapping gas components are those gas components that are difficult to accurately distinguish in mass spectrometry detection due to overlapping mass-to-charge ratio channel responses or overlapping or intersecting characteristic spectral lines in spectral detection. This invention improves the identification capability and quantitative accuracy of overlapping components.

The invention discloses a wavelength division isolation anti-interference method and system for a radio frequency optical network front return signal, and the method comprises the steps: introducing an interference monitoring system which represents the quality of a radio frequency signal and the power optical noise at the same time, and constructing a wavelength interference matrix of the normalized interference intensity between any wavelength channel pairs according to the interference monitoring system; carrying out topology analysis based on the matrix, calculating the interference degree and automatically dividing interference clusters of high-interference channels to realize global perception and quantitative description of a common-fiber link interference relationship; target wavelength configuration parameters of the central wavelength, the wavelength interval, the guard band width and the optical filter bandwidth of each channel are adaptively determined by using the interference matrix and the interference cluster result, and differential widening and frequency shift are performed on the channels in the interference cluster; and finally, by controlling the adjustable light source and the adjustable optical filter, the wavelength division configuration is dynamically reconstructed along with the interference environment. Therefore, in an ARoF + PoF common-fiber transmission scene, both the anti-interference capability of the radio frequency signal and the frequency spectrum utilization rate of the optical fiber can be considered.

A multi-fiber multi-channel wavelength division multiplexing (WDM) device (100), and an optical communication system using the multi-fiber multi-channel WDM device (100). The multi-fiber multi-channel WDM device (100) comprises: a first microlens array (10), a filter unit (20), a transparent substrate (30), and a second microlens array (40). The first microlens array (10) comprises microlenses arranged in M rows and N columns, wherein M represents the number of wavelength channels, and N represents the number of optical fibers; the filter unit (20) comprises M filter bands each having a center wavelength; a first surface (31) of the transparent substrate (30) is partially coated with a total reflection coating; and the second microlens array (40) comprises microlenses arranged in one row and N columns, wherein N represents the number of optical fibers. The shaping of light beams is realized by means of the microlens arrays, and the multi-fiber multi-channel WDM device (100) is used to increase the bandwidth of a current network based on standard WDM technology by N times, thereby satisfying bandwidth requirements of big data processing for optical communication at the present stage.

Provided is an imaging system capable of easily and accurately classifying objects.　A local server calibrates a local inference model on the basis of the optical system of an imaging device. A processor inputs, to the calibrated local inference model, an encoded image in which a plurality of spectral images obtained by imaging an object on each of a plurality of wavelength channels are compressed, and acquires a classification result obtained by classifying the object.

The embodiment of the invention provides a vehicle-mounted communication method, device and system and a storage medium, and relates to the technical field of communication. The method comprises the following steps: allocating a wavelength channel for each sensor through a dynamic wavelength allocation controller according to the type and communication load of the sensor; according to the wavelength channel allocated to each sensor, generating an optical signal of a corresponding wavelength through a temperature control distributed feedback laser, and modulating data of each sensor to the optical signal of the corresponding wavelength; the modulated optical signals with different wavelengths are input into an array waveguide grating multiplexer to be multiplexed into single-path optical signals, and demultiplexing is carried out through an array waveguide grating demultiplexer to generate data of each sensor; the communication load of each sensor is fed back to the dynamic wavelength allocation controller. According to the method, based on the types of the sensors and the communication loads, wavelength channels are dynamically allocated to different sensors, the time delay of multiplexing and demultiplexing is reduced, and therefore the real-time performance and reliability of vehicle-mounted communication are improved.

The application belongs to the technical field of optical fiber communication, and discloses an optical fiber transmission link quality monitoring and dispersion compensation optimization method and system, which comprises the following steps: extracting an error vector amplitude, an optical signal-to-noise ratio and constellation distortion features from a coherent receiver and fusing them into a comprehensive quality evaluation index; jointly estimating residual dispersion by using a clock recovery phase and equalizer coefficient distribution; adopting a variable step gradient descent to adaptively optimize dispersion compensation filter parameters; performing performance degradation trend analysis and early warning; and jointly monitoring and cooperatively optimizing multiple wavelength channels.

The present disclosure is directed toward architectures that combine DWDM and CWDM concepts in a single PIC. Transmitter stages in accordance with the present disclosure include a plurality of multiwavelength lasers having regions of separately grown epitaxial material whose gain peaks are centered at different wavelengths. Each laser launches a wavelength comb comprising a plurality of wavelength signals into a PLC, where the wavelengths within each wavelength comb are separated by a wavelength spacing that is smaller than that between adjacent wavelength combs. In some embodiments, the PLC includes modulator banks for encoding data on the wavelength signals and combining them to produce a composite DWDM output signal. In some embodiments, a receiver stage is included for demultiplexing a composite DWDM input signal and detecting each wavelength channel within it. In some embodiments, the receiver stage employs polarization-diversity techniques to enable it to operate on unpolarized / randomly polarized input signals.

The invention relates to the field of flow transmission, and provides a multi-wavelength channel flow transmission method, device and system, equipment and a medium. The method comprises the following steps: dividing to-be-transmitted data into at least four to-be-transmitted flow groups, wherein each to-be-transmitted flow group is transmitted through a corresponding wavelength channel group; for each to-be-transmitted flow group, transmitting the to-be-transmitted flow group based on the optical link corresponding to the to-be-transmitted flow group under the condition that the optical link corresponding to the to-be-transmitted flow group does not fail; and under the condition that the optical link corresponding to the to-be-transmitted flow group fails, selecting one optical link from the optical links corresponding to the rest of to-be-transmitted flow groups to transmit the to-be-transmitted flow group. According to the invention, the data to be transmitted are transmitted through different wavelength channel groups, even if a certain optical link breaks down, the flow can be transmitted through other optical links, the flow lost in the switching process is at least reduced by 25%, and the integrity and reliability of flow transmission are improved.

The invention relates to the technical field of concentration estimation, and discloses a residual nuclide concentration rapid estimation method and system for radioactive waste liquid, and the method comprises the steps: obtaining the absorbance values of the radioactive waste liquid under a plurality of wavelength channels in an ultraviolet-visible continuous wavelength range, and calculating the plurality of absorbance values, obtaining a hyperspectral absorbance vector representing the absorption characteristic of the radioactive waste liquid in a full spectrum range; by generating a hyperspectral absorbance vector and combining the steps of spectral decomposition, correction and the like, a matrix interference spectrum with iron and chromium ion interference spectrum characteristics and a residual characteristic spectrum with residual nuclide absorption spectrum characteristics can be accurately separated, and dynamically changing matrix color interference is effectively stripped; meanwhile, through multi-parameter correction such as a spectrum fidelity coefficient and a concentration mapping confidence coefficient, the problem that the absorbance is virtually high due to iron ion concentration fluctuation caused by batch change of waste liquid is avoided, and the accuracy and stability of residual nuclide concentration estimation are improved.

An optical assembly for demultiplexing wavelength channels includes a retro-reflecting Z-block of optically transmissive material having a port facing face and a back face. An optical port assembly including an array of channel ports and a common port is proximate to the port facing face. An array of optical filters is located along the port facing face in an optical alignment with respective optical ports. The filters are configured to selectively transmit light of corresponding wavelength channels. The back face of the retro-reflecting Z-block includes a main reflective surface between first and second angled reflective surfaces. The first and second angled reflective surfaces together form a retroreflector for light entering the retro-reflective Z-block via the common optical port.

The invention provides a light dose control method and device and a physical therapy lamp, and relates to the technical field of physical therapy lamps, the physical therapy lamp comprises at least one light emitting array, light emitting monomers with different wavelengths and different numbers are configured in the array, and a touch screen is used for generating a control signal of a target light dose. After the system receives the control signal, a light dose calculation process is started, distribution information, wavelength types and irradiation distances of the light-emitting monomers and preset irradiance data corresponding to different wavelengths and distances are obtained, and the output percentage, the pulse mode, the power mode and the irradiation time of each wavelength channel are obtained. The system calculates the current light dose based on the irradiance data, the output percentage, the pulse coefficient, the irradiation time and the power coefficient, and adjusts the irradiation parameters of the light-emitting array according to the difference value between the calculation result and the target light dose, including the adjustment power, the pulse mode, the irradiation time or the number of switches of the light-emitting monomers, so that the output light dose meets the target requirement.

This invention provides a method and system for measuring thin film thickness based on multispectral interference light intensity, belonging to the field of optical measurement technology. The method includes: acquiring multispectral interference light intensity data of the thin film under test in multiple wavelength channels; the multispectral interference light intensity data is generated by the interference of reflected light after a broadband beam is incident on the thin film under test; adaptively selecting a prediction mode or a matching mode based on the distribution of first training data of a thickness prediction model and second training data of multiple sub-intensity prediction models; in the prediction mode, inputting the multispectral interference light intensity data into the thickness prediction model to obtain the thickness of the thin film under test; or, in the matching mode, matching the multispectral interference light intensity data with a data spectrum to determine the thickness of the thin film under test; the data spectrum is generated based on multiple sub-intensity prediction models. This invention, by adaptively selecting the prediction mode or the matching mode, can improve the efficiency and accuracy of thickness measurement and has strong adaptability.

A kind of spaceborne laser radar multi-functional narrow-band filtering optical system and method, comprising: 1064nm channel and 532nm channel, with the function of the narrow-band filtering of 1064nm and 532nm dual-wavelength channel laser scattering echo, meet the needs of different wavelength laser common receiving optical system and APD detector, compact structure, high integration;With the function of testing the parallelism and transmittance of the whole machine transceiver of different wavelength channels without disassembling any assembled and adjusted component, the testing method is simple, suitable for whole machine testing;With the ability to cancel any wavelength channel arbitrarily, while keeping the auxiliary testing function of another channel unchanged, strong engineering applicability.

A reconfigurable optical add and drop multiplexer (ROADM) system is provided. The ROADM system may include a switching system which includes at least one first WSS optically coupled to a tapping coupler and configured to receive an input optical signal from a first circulator, transmit a drop optical signal to a demultiplexer to drop one or more first wavelength channels, and output a through optical signal. The switching system may also include at least one second WSS optically coupled to the at least one first WSS and a multiplexer and configured to receive an add optical signal to add one or more second wavelength channels, receive the through optical signal, and output an output optical signal to a second circulator, and at least one OCM configured to monitor the input optical signal and the output optical signal.

The invention discloses a weak fiber bragg grating array ultrafast demodulation system and method based on a laser array, and relates to the technical field of sensing, the system comprises a multi-wavelength laser array module, an optical beam splitter, an optical circulator, a weak fiber bragg grating array, a first photoelectric conversion module, a second photoelectric conversion module and a signal processing module; the output end of the multi-wavelength laser array module is connected with the input end of the light beam splitter, and the multi-wavelength laser array module integrates N wavelength channels; a first output end of the optical beam splitter is connected with the first photoelectric conversion module, and a second output end is connected with a first port of the optical circulator; a second port of the optical circulator is connected with the weak fiber grating array, and a third port is connected with the second photoelectric conversion module; the weak fiber bragg grating array comprises M weak fiber bragg gratings which are connected in series; and the output ends of the first photoelectric conversion module and the second photoelectric conversion module are connected to the signal processing module. According to the invention, ultra-high-speed demodulation can be carried out on M weak fiber gratings at the same time, and wavelength demodulation is realized.

A method for measuring anisotropic film based on zero reflection difference differential signal relates to the field of film thickness detection, and comprises the following steps: measuring wide-band reflection difference spectrum of a sample by using a reflection difference spectrometer and a photoelastic modulation reflection difference spectrometer; determining an incident wavelength corresponding to a zero reflection difference signal: traversing all wavelength channels in the wide-band reflection difference spectrum, and determining a wavelength corresponding to a zero-crossing of the reflection difference signal; determining the thickness of the anisotropic film: determining the thickness of the anisotropic film according to a mapping relationship between the wavelength corresponding to the zero reflection difference signal and the film thickness. The application proposes using the position of the zero-crossing point of the reflection difference signal ΔR / R=0 to determine the thickness of the anisotropic film, so that the error introduced by the difference between the polarization angle of incident light and the crystal axis angle of the anisotropic film can be removed, and further, the time for determining the crystal axis can be saved.

The invention relates to the technical field of optical power parallel testing, and discloses a full-automatic multi-wavelength optical power parallel testing device and a switching-free measuring method, and the method comprises the steps: obtaining a multi-wavelength optical signal outputted by an optical switch through a parallel testing device, calculating a target calibration parameter of each wavelength channel in the optical switch based on the multi-wavelength optical signal; detecting the multi-wavelength optical signal through an optical splitter to obtain three paths of parallel electric signals; calculating a calibration power value of each wavelength channel according to the target calibration parameter and the three paths of parallel electric signals; according to the method, the range switching time and the switching error in the prior art are eliminated, and by analyzing the interaction of the grating dispersion angle, the LCoS pixel modulation response, the temperature-dependent insertion loss and the crosstalk coefficient between the ports, the measurement accuracy of the measurement range is improved, and the measurement accuracy of the measurement range is improved. Synchronous power measurement of a plurality of wavelength channels is realized, and the test accuracy is further improved.

This invention relates to the field of optical communication testing technology and discloses an optical interconnect link testing system and method for computing power clusters. The optical interconnect link testing method for computing power clusters acquires wavelength configuration data, broadband spectral data, and bidirectional polarization state evolution trajectory data of a DWDM system. It then uses a narrowband filter window sequence to separate the independent spectral curves of each wavelength channel, extracts single-wavelength spectral fingerprint vectors and calculates the coupling relationship matrix between channels, calculates bidirectional polarization dynamic characteristics and generates polarization symmetry difference vectors, calculates the cross-correlation coefficients of spectral and polarization characteristics to generate a channel-level coupling degree matrix, analyzes the temporal causal relationship of coupling faults, matches a composite fault mode library to generate fault classification results, and finally outputs a spectral-polarization joint diagnostic report. This achieves accurate identification and root cause diagnosis of spectral degradation and polarization degradation coupling faults in DWDM coherent optical systems.

The invention discloses a giant clam shell waste image data acquisition processing method and system, and relates to the technical field of giant clam shell waste image processing, and the method comprises the steps: obtaining a black level map, a response uniformity correction map and two working wavelength channel gains based on a black field map and a white board map; the method comprises the following steps: collecting four images under parallel polarization and orthogonal polarization, correcting, uniformizing, calculating a common mode item and a difference item, and normalizing to obtain a dual-polarization dual-wavelength interference difference index graph; and generating a confidence map in combination with the saturated pixel mask and local noise estimation, and performing robustness to obtain an effective pixel mask and a statistic set, and finally forming a sample data packet. According to the invention, anti-interference, stable, comparable and traceable detection of the tridacna waste image data can be realized.

The application provides a wavelength granularity task segmentation scheduling method and system for large-scale graph computation, comprising: obtaining a user-submitted graph computation task and network topology information, establishing a system architecture, and completing system initialization; performing feature analysis on the graph computation task; applying a multi-level graph segmentation algorithm to divide the graph data into multiple subgraph units; analyzing the available wavelength resource state in the optical network, establishing a mapping relationship between the subgraph communication demand and the wavelength resource; configuring an optical cross-connect device to establish a dedicated wavelength channel, and distributing the subgraph task to the corresponding computing node; and performing data exchange between the subgraphs through the dedicated wavelength channel, while performing parallel computation within the subgraphs. The application combines graph segmentation and wavelength resource allocation, realizes the collaborative optimization of the computation task and the communication resource, solves the performance bottleneck problem caused by the separation of computation and communication in the traditional distributed graph computation, and significantly improves the efficiency and scalability of large-scale graph computation.