17 results about "Optical processor" patented technology

A time-lapse image classification device and method is disclosed that uses a diffractive optical network to classify an optical input, significantly advancing classification accuracy and generalization performance on complex input objects by using the lateral movements of the input objects and / or the diffractive optical network relative to each other. The design space and performance limits of time-lapse diffractive optical networks were numerically tested, revealing a blind testing accuracy of 62.03% on the optical classification of objects from the CIFAR-10 dataset. This constitutes the highest inference accuracy achieved so far using a single diffractive optical network on the CIFAR-10 dataset. Time-lapse diffractive optical networks will be broadly useful for the spatio-temporal analysis of input signals using all-optical processors.

The invention discloses a rapid biological cell classification imaging method and system based on a quantum correlation diffraction optical neural network, and the method comprises the steps: regulating and controlling a signal photon to an orbital angular momentum state optimized by a neural network based on a time-energy correlation two-photon pair generated in a spontaneous parametric down-conversion process, and irradiating a biological cell sample; a diffractive optical neural network is utilized to construct a quantum state illumination diffractive optical processor, photons carrying cell complex amplitude information are mapped to different detection areas of a predefined image plane, and rapid and high-precision cell classification and recognition are realized through correlation imaging results of an enhanced charge coupled camera. The method has the signal-to-noise ratio and anti-interference capability exceeding the classic limit, can keep high-precision cell classification capability under high background noise, and is suitable for long-time monitoring of living cells under the condition of extremely low light intensity. The method has the characteristics of low energy consumption and high efficiency, and meets the requirements of green calculation and sustainable development. And the method can be used for rapidly classifying and identifying the living biological cells without marks and phototoxicity.

An optical processor and a method for optically processing data are described herein. The optical processor may comprise an optical pulse generator, an optical memory, and optical logic. The optical pulse generator may be configured to generate an optical interrogation pulse. The optical memory may comprise one or more memory cells. Each memory cell may comprise a phase-change material. The optical memory may be configured to direct the optical interrogation pulse at memory cells thereby generating optical readout pulses. Each optical readout pulse may correspond to a state of the phase-change material in the memory cells thereby encoding data stored in the memory cells. Each optical readout pulse may be directed to the optical logic. The optical logic may be configured to perform at least one logical operation on the data based on the readout pulses.

The present disclosure discloses an optical signal amplification apparatus, method, and optical communication system, the optical signal amplification apparatus including a first optical processor, a second optical processor, a third optical processor, a fourth optical processor, and a transmission optical fiber, wherein the fourth optical processor receives second pump light and third pump light and multiplexes the second pump light and the third pump light to form a first mixed pump light, the third optical processor receives the first pump light, the second optical processor receives the first pump light and the first mixed pump light and multiplexes the first pump light and the first mixed pump light to form a second mixed pump light, the first optical processor receives the second mixed pump light and fourth pump light and multiplexes the second mixed pump light and the fourth pump light to form a third mixed pump light, and the transmission optical fiber receives a full-band service optical signal and the third mixed pump light and amplifies an optical signal of at least one wavelength band of the service optical signal based on the third mixed pump light.

The present disclosure relates to central units and remote units. One example central unit includes at least one digital-to-analog converter (DAC), at least one first electro-optical converter configured to convert an analog electrical signal output by the DAC into an analog optical signal, at least one first optical processor configured to process the analog optical signal output by the first electro-optical converter, where the first optical processor includes at least one of at least one first optical filter, at least one first optical phase shifter, and at least one first optical power amplifier, a first multiplexer configured to combine analog optical signals output by the first optical processor into one analog optical signal, and a first demultiplexer configured to decompose the one analog optical signal into multiple analog optical signals at different wavelengths.

A photonic image rejection radio frequency (RF) mixer and a receiver implementing the same may suppress undesired mirror image signals having frequencies at a spectral location that is mirror-symmetric, with respect to a local oscillator (LO), to that of a signal of interest. An upconverted optical beam corresponding to a captured RF beam is extracted by an optical processor. The upconverted optical beam is mixed with the LO to obtain a desired composite optical signal and an undesired composite optical signal, each providing a corresponding beat frequency optical signal at the same frequency. The desired and undesired composite optical signals are captured by multiple optical pickups with relative phase shifts in their beat frequency optical signals which are converted into corresponding electrical signals and combined to suppress the undesired signal.

The application discloses an optical mode selection switch, comprising a platform, the platform surface is fixedly connected with a spatial light modulator, an optical processing device and a phase modulation module, the spatial light modulator, the optical processing device and the phase modulation module are parallel to each other, the optical processing device is located between the spatial light modulator and the phase modulation module, a plurality of phase units are uniformly fixed on the phase modulation module, the phase modulation module is a mode demultiplexing element array module, and the phase unit is a mode demultiplexing device unit of the same coordinate transformation or multi-plane light field conversion. The application can carry out N mode inputs, N mode outputs, and can freely select, separate and group propagation modes, improve the freedom degree of mode selection, and is not limited to optical fiber input or spatial light input, optical fiber or spatial light output, so that the mode division multiplexing is not limited to being carried out in an optical waveguide.

The invention relates to an optical processor (2), in particular to an optical interferometer, comprising: a plurality of processor input ports (5.1 to 5.4) for receiving input optical signals (4.1 to 4.4), a plurality of processor output ports (6.1 to 6.4) for emitting output optical signals (7.1 to 7.4), and an optical network (9) that connects the processor input ports (5.1 to 5.4) to the processor output ports (6.1 to 6.4) and comprises at least one layer (11) with a plurality of optical devices (10a-c) configured to process the input optical signals (4.1 to 4.4) from the processor input ports (5.1 to 5.4). The at least one layer (11) has a plurality of input ports (14.1 to 14.4) and a plurality of output ports (15.1 to 15.4) that are connected to the plurality of input ports (14.1 to 14.4) via optical delay lines (16.1 to 16.4). The invention also relates to an apparatus (1), comprising: an optical processor (2) as indicated above, a plurality of light sources (3.1 to 3.4) for generating the plurality of input optical signals (4.1 to 4.4) for the optical processor (2), and a plurality of optical detectors (8.1 to 8.4) for detecting the output optical signals (7.1 to 7.4) from the optical processor (2).

Amplitude-only Fourier optical processors is capable of processing large-scale matrices in a single time-step and microsecond-short latency. The processors may have a 4f optical system architecture and may employ reprogrammable high-resolution amplitude-only spatial modulators, such as Digital Micromirror Devices (DMD). In addition, methods are provided for obtaining amplitude-only electro-optical convolutions between large matrices displayed by the DMDs. The large matrices on which convolution is performed may be feature maps corresponding to images and kernel matrices used in neural networks classification systems. Analog optical convolutional neural networks are also provided that perform accurate classification tasks on large matrices. In addition, methods are provided for off-chip training the analog optical convolutional neural networks. The training includes building an accurate physical model for the analog optical processor and performing computer simulations of the optical processor according to the physical model. The methods do not need to employ any interferometric scheme.

This invention discloses a method and system for measuring single-photon orbital angular momentum Bell states based on a diffractive optical neural network. Based on time-energy correlated photon pairs generated by a spontaneous parametric downconversion process, an interference light field is generated by passing a signal photon modulated into a single-photon orbital angular momentum Bell state through a Bell state evolution system. A diffractive optical processor is constructed using a diffractive optical neural network to map the interference light fields of different Bell states into Gaussian spots in different detection regions within the output plane. Fast and high-precision identification of single-photon orbital angular momentum Bell states is achieved by correlating the imaging results with an enhanced charge-coupled device (CCD) camera. The proposed Bell state measurement method possesses a signal-to-noise ratio and anti-interference capability exceeding the classical limit, maintaining high-precision Bell state identification capability even under high background noise. It exhibits low energy consumption and high efficiency, meeting the needs of green computing and sustainable development. It can be applied to quantum state measurement in the field of quantum information processing.

In order to solve the problems of wideband signal processing complexity, transient signal difficult to capture and low precision of time-frequency overlapping signal sorting in electronic reconnaissance, a wideband high-resolution time-frequency analysis and signal sorting method based on photonic processor is provided. The method uses optical pulse and cascade modulator to reduce the speed of time sequence decomposition, and completes the delay extraction operation on the optical processor. By matching the bandwidth of the photoelectric detector and the subchannel bandwidth, the filtering operation is realized on the optical processor. In the digital domain, only fractional delay and inverse discrete Fourier transform need to be completed to realize time-frequency decomposition and obtain multiple narrowband reduced speed signals. Parallel short-time Fourier transform is performed on each signal, and due to the reduction of single signal bandwidth, higher time-frequency resolution is obtained under the same processing point number, and finer time-frequency features help to improve the signal sorting and parameter identification precision. The application has low computational complexity and high analysis precision, and is suitable for dense transient signal processing in complex electromagnetic environment.

A semiconductor photonic integrated circuits (PICs) may perform RF signal processing, including beamspace processing or spatial Fourier Transforms in a semiconductor PIC. An RF imaging system including the semiconductor processing PIC may include an antenna array that upconverts RF signals to optical signals using electro-optic modulators, such as lithium niobate modulators. Simultaneous processing (beamforming) of multiple RF signals utilizing the semiconductor processing PIC may be performed.

The application belongs to the technical field of new energy, and relates to an amorphous phase change peak regulation system and method based on photon-phonon cooperative excitation. The system comprises an optical processor, a phase change calculation unit and a near-field radiation heat transfer module. The phase change calculation unit comprises a copper substrate, an elastic interface modification layer arranged on the copper substrate, an amorphous phase change material layer arranged on the elastic interface modification layer, and a dielectric film layer covering the outer surface of the amorphous phase change material layer. The optical processor is connected with the dielectric film layer. The amorphous phase change material layer is connected with the near-field radiation heat transfer module. The application solves the problems of slow response speed, poor regulation and control capacity, and long energy conversion path in the prior art, and realizes direct, rapid and efficient regulation and control of power fluctuation of a power grid.

A parallel optical computing system is described, the system comprising: at least one first module (10) comprising at least one polarizing filter (12) and at least one liquid crystal cell (13), the first module (10) configured as an optical modulator (100) for receiving light from a light source (70) and encoding the light output from the liquid crystal cell (13) as optical data to be processed; at least one second module (20) comprising at least one polarizing filter (22) and at least one liquid crystal cell (23), the second module (20) configurable as an optical processor (200) for receiving the optical data to be processed and outputting processed optical results; at least one optical detector (40) designed to receive the processed optical results and convert the optical results into corresponding electrical results.

In-network Optical Inference (IOI) provides low-latency machine learning inference by leveraging programmable switches and optical matrix multiplication. IOI uses a transceiver module, called a Neuro Transceiver, with an optical processor to perform linear operations, such as matrix multiplication, in the optical domain. IOI's transceiver modules can be plugged into programmable packet switches, which are programmed to perform non-linear activations in the electronic domain and to respond to inference queries. Processing inference queries at the programmable packet switches inside the network, without sending them to cloud or edge inference servers, significantly reduces end-to-end inference latency experienced by users.

A parallel optical computing system is described, said system comprising:at least one first module (10) comprising at least one polarization filter (12) and at least one liquid crystal cell (13), the first module (10) being configured as an optical modulator (100) for receiving light from a light source (70) and for encoding the light output from the liquid crystal cell (13) into optical data to be processed;at least one second module (20) comprising at least one polarization filter (22) and at least one liquid crystal cell (23), the second module (20) being able to be configured as an optical processor (200) for receiving the optical data to be processed and for outputting an optical result of the processing;at least one optical detector (40), designed to receive the optical result of the processing and convert the optical result into a corresponding electrical result.

Example optical signal processing apparatuses and methods are provided. One example apparatus includes: N light sources, a wavelength multiplexer, an optical processor, a dither application circuit, a first detection circuit, a second detection circuit, and a feedback control circuit. The light source generates a single-wavelength signal. The dither application circuit applies a dither signal to the light source. The wavelength multiplexer generates a multi-wavelength signal based on the single-wavelength signal. The first detection circuit is configured to obtain a first power signal of a signal input to the optical processor. The second detection circuit is configured to obtain a second power signal of a signal output from the optical processor. The feedback control circuit adjusts a working parameter of the optical processor based on the dither signal corresponding to the single-wavelength signal, the first power signal, and the second power signal.