127 results about "Wavelength channels" patented technology

The invention provides a wavelength division multiplexing-fused multi-core optical fiber temperature detection method and system. Wherein the broadband light source is divided into multiple wavelength channels through wavelength division multiplexing, and a wavelength-fiber core mapping relation is established, so that each fiber core of the multi-core optical fiber transmits a single-wavelength optical signal. An optical fiber is integrated to the surface of an object according to a three-dimensional path, each fiber core covers a plurality of sensing sub-areas, the wavelength drift amount caused by temperature is extracted by detecting the attenuation characteristic of an optical signal at a bending position, the wavelength drift amount is converted into a temperature value in combination with a calibration curve, and a temperature gradient model bound with the fiber core position is constructed. And further performing spatial solution by using fiber core spacing, wavelength mapping and transmission time delay parameters, establishing a corresponding relationship between the coordinates of the sensing sub-regions and the temperature, and finally reconstructing three-dimensional temperature field distribution. According to the technical scheme provided by the invention, high-resolution dynamic reconstruction and gradient analysis of a three-dimensional temperature field on a complex surface are realized through wavelength-space two-dimensional decoupling.

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 relates to the technical field of power production communication, and discloses an optical fiber transmission and multi-channel communication scheduling fusion method, system and device based on emergency communication switchover, and a medium, and the method comprises the steps: carrying out the unified protocol packaging of data of a production scheduling service, and obtaining a production scheduling service data independent transmission protocol stream; the method comprises the following steps: receiving a production scheduling service data independent transmission protocol stream to be transmitted, and pre-distributing a wavelength channel in an optical fiber transmission channel for the independent transmission protocol stream according to the priority and data traffic of a production scheduling service; carrying out independent transmission protocol stream transmission in the optical fiber transmission channel, adjusting the transmission adaptability of a target channel in multiple channels according to an emergency communication switching requirement, and switching the optical fiber transmission channel to the target channel; the target channel comprises a 5G private network channel and a satellite channel. According to the method, flexible adaptation and data consistency of production scheduling service transmission can be ensured, and the emergency scheduling communication capability and efficiency are improved.

The invention discloses an optical computing array based on micro-ring resonators without a free spectral range, which comprises an on-chip wavelength division multiplexing beam splitting array, an on-chip intensity modulation array, two groups of on-chip wavelength division multiplexing beam combining arrays and an on-chip balance detector, the on-chip wavelength division multiplexing beam splitting array and the on-chip wavelength division multiplexing beam combining array are respectively composed of a group of multiple FSR-free MRRs which share the same bus optical waveguide, each resonator corresponds to an independent wavelength channel, and the on-chip intensity modulator array is composed of a plurality of groups of on-chip MZI modulator arrays. According to the optical calculation array implementation method, independent control and coding calculation of different wavelength channels in a broadband wavelength range are realized by utilizing the single harmonic peak characteristic of the FSR-free MRR array and the wide-spectrum intensity modulation function of the MZI unit, the limitation of a free spectrum range on the optical calculation wavelength channel is eliminated, the higher wavelength parallelism is achieved, and the optical calculation array implementation method has the advantages of being simple in structure and convenient to implement. And therefore, the calculation scale is remarkably improved.

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

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.

An optical transmitter that multiplexes wavelength channels includes: a first light source; one or more second light source each having a different wavelength; collimator lenses coupled to respective outputs of the first and second light sources; an optical multiplexer that causes an output light beam from the first light source to be transmitted from a first end surface to a second end surface, causes the output light beam from the first light source to be reflected by a reflecting mirror, causes an output light beam from the second light source to pass through a wavelength filter, causes the output light beam from the second light source to be reflected by the reflecting mirror, and causes output light beams of the respective wavelength channels, to sequentially multiplex the output light beams of the respective wavelength channels; and beam splitters respectively inserted between the collimator lenses and the first end surface.

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.

A multi-channel photonic demultiplexer includes: an input region receiving a multi-channel optical signal including four different wavelength channels; four output regions, each adapted to receive a corresponding one of the four different wavelength channels demultiplexed from the multi-channel optical signal; and a dispersion region optically disposed between the input region and the four output regions. The dispersion region includes a first material and a second material that are non-uniformly dispersed to form a plurality of interfaces, wherein each of the plurality of interfaces corresponds to a change in the refractive index of the dispersion region, and the dispersion region is collectively configured to optically separate each of the four different wavelength channels from the multi-channel optical signal and guide each of the four different wavelength channels to a corresponding one of the four output regions.

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 invention relates to the technical field of communication, and particularly discloses a multi-core optical fiber wavelength division multiplexer, which comprises a double-fiber collimation head, a first wavelength division multiplexer, a second wavelength division multiplexer and a third wavelength division multiplexer, the single-fiber collimating head comprises a single-fiber tail fiber, a second collimating lens and a second sleeve; the filter assembly comprises a filter plate and a protective sleeve; the large sleeve is used for packaging and fixing the double-fiber collimation head, the filter assembly and the single-fiber collimation head; wherein the double-fiber tail fiber and the single-fiber tail fiber are both multi-core optical fibers; a traditional single-core tail fiber is replaced by the multi-core fiber, so that a single device can synchronously process a multi-space channel and a multi-wavelength channel, the fiber core symmetrical arrangement angle of the double-fiber tail fiber is set, the rotation dislocation loss of a reflection light path is reduced, and self-alignment reflection coupling of multi-core signals is achieved without active calibration.

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 invention provides a reconfigurable photonic crystal device for optical reasoning classification and an implementation method of the reconfigurable photonic crystal device. The reconfigurable photonic crystal device comprises a silicon-on-insulator substrate and photonic crystal units, wherein the photonic crystal units are constructed on the silicon-on-insulator substrate and are formed by first silicon columns which are periodically arranged in two-dimensional square lattices; the photonic crystal unit further comprises a defect structure formed by removing a whole row of first silicon columns in the center of the photonic crystal unit and a tunable defect silicon column which is located in the defect center of the defect structure and is integrated with a micro heater, and at least one second silicon column is distributed on the two sides of the tunable defect silicon column in the lattice direction. According to the reconfigurable photonic crystal device for optical reasoning and classification and the implementation method thereof, the refractive index of the tunable defective silicon column can be dynamically adjusted through the thermo-optic effect, independent regulation and control of optical signals with different wavelengths can be achieved, accurate control of transmitted spectrum and phase response can be achieved, multiple sets of programmable wavelength channels are formed, and the reconfigurable photonic crystal device is suitable for optical reasoning and classification. And on-chip integration of multi-wavelength parallel convolution, all-optical nonlinear activation and diffraction light field modulation can be synchronously realized.

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.