23 results about "Micro ring resonator" patented technology

This document describes an electro-optic photonic memory device comprising a micro-ring resonator, and at least one ferroelectric field effect transistor (FeFET) that is disposed along a partial circumference of a raised ring waveguide of the micro-ring resonator. The FeFET comprises a ferroelectric gate stack and a heterojunction channel layer.

The present application belongs to the technical field of photonic device design, and specifically relates to a micro-ring resonator reverse design optimization method based on deep learning. The present application comprises: obtaining different micro-ring resonator structure parameters and corresponding free spectral range and quality factor, and processing and dividing the data set; building a cascade neural network model, wherein the reverse network takes the target performance index as the input to predict the structure parameter, the forward network inputs the structure parameter and outputs the performance index, and is used to constrain and correct the reverse prediction result; after training, the test set is evaluated to measure the reverse effect by the average absolute percentage error index, the weight in the loss function is changed, and multiple rounds of training are performed to determine the optimal weight configuration and final model of the reverse design. The present application has the advantages of high calculation efficiency, excellent design precision and strong physical realizability, can reduce the dependence on large-scale simulation and multiple iteration optimization, effectively shorten the device design cycle, and has high application value.

This invention discloses an alcohol detection chip and detection method based on a cascaded dual-ring resonator with dual-gradient curvature, belonging to the field of optical micro-nano sensing and integrated optics technology. This invention aims to solve the technical problems of low sensitivity, poor resolution, complex spectral analysis, and weak environmental adaptability in traditional micro-ring sensing devices, as well as the low detection accuracy of existing miniaturized equipment. The chip uses a silicon-based substrate and includes input and output waveguides, cascaded dual micro-rings, a coupling region, and two sets of miniature heating electrodes. The micro-rings employ dual-gradient waveguides with circular and Euler-circular curved structures for the inner and outer curves, respectively. The cascaded dual rings create a vernier effect, broadening the free spectral range. By adjusting the resonant wavelength through the heating electrodes, scanning detection is completed in the characteristic alcohol band around 1400nm, and high-precision alcohol measurement is achieved by combining transmission spectroscopy. This invention has a compact structure and low cost, and is suitable for rapid quantitative detection of alcohol in industrial monitoring, vehicle safety, food safety, and other scenarios.

The application discloses a kind of based on thermo-optic effect's silicon optical chip and the active alignment packaging method and system of optical fiber array, it is related to optoelectronic chip packaging test technical field, method is by setting up the monitoring unit containing asymmetric double micro-ring resonator in silicon optical chip I / O channel side, it is equipped with the localized thermal elastic microcavity executor of banding suspension film structure;After machine vision rough alignment, using frequency division multiplexing monitoring signal, the global coupling region is determined by six-axis displacement platform scanning, and then driving thermal elastic microcavity executor realizes fine alignment, and after solidification, alignment state is maintained by in-situ monitoring and dynamic compensation, system contains silicon optical chip, optical fiber array, frequency division multiplexing light source, detection array, six-axis displacement platform and control unit, the application combines thermal elastic and thermo-optic effect, improves alignment precision and stability, and is suitable for high-precision coupling packaging scene.

The application claims a kind of optical convolution calculation structure and calculation method based on micro-ring resonator, belong to photonic computing and integrated optics technical field.For the high-dimensional calculation of optical convolution neural network (Optical Convolutional Neural Network, OCNN), the number of basic units, chip size is squared, the problems such as OCNN calculation potential is limited, chip manufacturing complexity is improved, an optical convolution calculation structure based on single micro-ring resonator is proposed.Combining the structure with optical or electronic fully connected layer can realize complete CNN system, so as to perform complex tasks.The optical convolution calculation structure is simple and easy to expand, when increasing the dimension of calculation matrix, the chip size growth and calculation dimension are linearly related, which significantly improves the computing capacity of integrated OCNN.

This invention provides a method, system, device, and medium for discrete modulation of microring resonant peaks, belonging to the field of photonic device modulation technology. The method includes: acquiring the output spectral data of a microring resonator and determining the center frequency and light intensity value of each resonant mode to construct a mode energy distribution vector and generate a mode competition matrix; calculating the effective gain value of each resonant mode and determining a target resonant mode based on a preset target frequency to generate corresponding modulation weight parameters; performing discrete modulation processing on the microring resonator to adjust the center frequency and light intensity value corresponding to the target resonant mode; acquiring the output spectral data after discrete modulation processing and updating the mode energy distribution vector and the mode competition matrix, performing iterative modulation until a preset termination condition is met. This invention achieves stable enhancement of the target resonant mode and effective suppression of the influence of multimode competition.

A semiconductor device includes a micro-ring resonator including a semiconductor ring having a heater portion and a modulator portion integrally formed therein, wherein the semiconductor ring includes a central portion and extended portions radially inside and radially outside the central portion, the extended portions being thinner than the central portion. Contacts connect to the extended portions of the heater portion and the modulator portion on a top and a bottom of the extended portions.

The application belongs to the technical field of semiconductor optoelectronic devices, and particularly relates to a kind of integrated SOA compensation displacement grating DBR wide tuning laser system, comprising: gain chip area, for providing laser gain;Displacement grating DBR reflection area, optically coupled with gain chip area, constitutes DBR main laser cavity;Double micro-ring resonator module, comprising first micro-ring resonator and second micro-ring resonator;The radius of first micro-ring resonator and second micro-ring resonator is different, and wavelength selection is carried out on the output light of main cavity through vernier effect;Sagnac ring feedback structure, optically coupled with double micro-ring resonator module, for feeding back selected wavelength optical signal to gain chip area;Semiconductor optical amplifier, set outside main cavity, for power compensation of external cavity optical signal and optical signal fed back to laser main cavity.The scheme can realize wide tuning, high stability, low insertion loss single-mode laser output through precise regulation and control of displacement grating, combined with double micro-ring vernier mode selection, Sagnac locking and SOA compensation.

This invention belongs to the field of integrated optical device technology, specifically relating to a microring resonator and its fabrication method. The device comprises: a substrate; a ring waveguide disposed at the center of the substrate; a U-shaped waveguide disposed on the substrate, wherein the U-shaped waveguide is formed by two straight waveguide segments and a semi-circular arc waveguide connected end-to-end, with the ring waveguide positioned between the two straight waveguide segments to form coupling; and an etched aperture located at the center of the semi-circular arc waveguide; an input waveguide disposed on the substrate and connected to one straight waveguide segment; and an output waveguide disposed on the substrate and connected to another straight waveguide segment. This invention provides controllable loss by introducing an etched aperture in the U-shaped waveguide, achieving coupling interference between discrete and continuous modes to generate asymmetric Fano resonance. By adjusting the waveguide length and the aperture size, high extinction ratio, large slope, or uniform resonance can be achieved at the target wavelength. This device has a simple structure, is easy to manufacture, is compatible with silicon photonics processes, and is suitable for high-performance photonic integrated systems.

The application provides a wide tuning narrow line width semiconductor laser, characterized by comprising: an optical gain module for providing a tunable light wave; an optical coupling module for coupling the light wave; and an external cavity resonance module for adjusting the coupled light wave to obtain a narrow line width output light. The application provides a wide tuning narrow line width semiconductor laser which utilizes Fano resonance between a micro-ring resonator and a U-shaped waveguide and vernier scale effect between micro-ring resonators to realize a tuning function, and utilizes a Mach-Zehnder interferometer to suppress side modes in a transmission spectrum of the micro-ring resonator, thereby improving wavelength selectivity. The application realizes narrow line width, frequency stability and wide spectrum range of the output laser.

This invention discloses an optical neuron structure based on an on-chip microring resonator, comprising, from front to back, a weighting unit, a summing unit, and a nonlinear unit. The weighting unit employs a wavelength division multiplexing (WDM) series microring resonator structure to apply weights to multiple input optical signals. The summing unit includes a photodetector and a preamplifier, used to sum the multiple weighted optical signals and drive the microring resonator of the nonlinear unit. The nonlinear unit employs a microring resonator structure to perform nonlinear output processing on the summed optical signals, primarily utilizing the nonlinear transmission characteristics of the microring resonator. This invention features high integration, and the proposed optical neuron exhibits strong scalability. Furthermore, the on-chip integration process is compatible with CMOS, enabling large-scale fabrication and facilitating the miniaturization, high integration, and high scalability of the optical neuron.

Variations in a thermal structure for an open cavity photonic integrated circuit (OCPIC) having an MRR. The structure includes an air trench in fluid communication with an air cavity that is located under the MRR. The air trench is a gap / opening in the oxide that encircles at least a portion of the MRR and extends outward radially therefrom, with a consistent width, to a diameter D1. An oxide cladding is not removed in areas that are used for metal traces and routing. The structure is characterized by straight walls along the air trench. The structure has a lower diameter D2, measured at a bottom / floor of the air cavity. In various embodiments, D2 is substantially equal to D1.

This invention provides a wavelength locking method, apparatus, electronic device, and storage medium for microring resonators (MRRs). It can be used for joint scanning and locking control of high-Q second-order CROW filters. The locking time is less than 2 milliseconds, and the wavelength locker can operate across the entire C-band. An FPGA is used as the controller. In scanning mode, the wavelength of the CROW filter is scanned, causing the output power of the lower port of the CROW filter to quickly reach near its maximum value. In locking mode, a PID control algorithm adjusts the power applied to the microheater to maximize the output power of the lower port of the CROW filter. This method has excellent scalability and can be easily applied to higher-order MRRs. When the wavelength control loop is enabled, the resonant stability and laser wavelength drift tolerance of the CROW filter can be significantly enhanced.

A micro-ring resonator and a method of manufacturing the same are provided. The micro-ring resonator includes a substrate, an insulating layer provided on the substrate, a linear waveguide provided on the insulating layer, a first electrode provided on the linear waveguide, a ring waveguide provided on the insulating layer and coupled with the linear waveguide, and a second electrode provided on the ring waveguide. The insulating layer includes a cavity formed below a portion of the linear waveguide, the portion being adjacent to the ring waveguide.

The present application relates to the field of tactile sensing and integrated photonics technology, and particularly relates to a FBG tactile sensing real-time processing system based on a single micro-ring resonator, comprising a single-wavelength laser, a circulator, a FBG tactile sensor, a micro-ring resonator, an MPD with avalanche gain, a TIA, an ADC and a PC terminal, the wavelength of the laser falls within the 3dB bandwidth of the FBG sensor, and the micro-ring resonator is provided with an electric tuning structure to regulate the transmitted light intensity; when the electric tuning is fixed, signal demodulation is realized, and when the electric tuning is adjustable, convolution weighting is completed; after photoelectric conversion, amplification and analog-digital conversion, the signal is sent to the PC terminal for processing, and the system has compact structure and high real-time performance. In the present application, through the single micro-ring resonator with an electric tuning structure, integrated processing of tactile signal demodulation and convolution weighting is realized, and demodulation and feature extraction are completed in a single device, thereby shortening the processing link, reducing the cumulative delay and improving the real-time response speed of the system.

This disclosure belongs to the field of on-chip integrated sensing technology, and provides a chip sensing component and a trace gas detection device. The chip sensing component includes: a first mode field coupler, a power beam splitter, a non-uniform free spectral range microring resonator array, a power combiner, and a second mode field coupler connected in series. The non-uniform free spectral range microring resonator array is composed of N microring resonators with different resonant ring lengths connected in parallel, and the evanescent field of the ring waveguide of each microring resonator is exposed to the chip surface environment. It is used to capture the absorption information of gas molecules using multiple evanescent fields, and outputs N probe beams carrying the absorption information of gas molecules to the power combiner. By using multiple microring resonators with different ring lengths, the spectral sampling interval is effectively greatly compressed, breaking through the limitation of the free spectral range of a single microring, enabling the on-chip system to detect the narrow linewidth absorption characteristics of gas molecules.

An example optical system having an optical supply sub-system for supplying light to a photonic integrated circuit is presented. The optical supply sub-system includes a primary light source, an auxiliary light source, a first optical coupler, and a second optical coupler. The first optical coupler includes a first metal-oxide-semiconductor capacitor microring resonator (MOSCAP MRR) and the first optical coupler includes a second MOSCAP MRR. The first optical coupler is coupled to the primary light source and the photonic integrated circuit to control the propagation of the primary light to the photonic integrated circuit. The auxiliary light source may be configured to generate an auxiliary light when the primary light source malfunctions and the first MOSCAP MRR and the second MOSCAP MRR are controlled to control propagation of the auxiliary light from the auxiliary light source to the photonic integrated circuit.

This invention discloses a high-brightness quantum light source for dense wavelength division multiplexing (DWDM) multichannel broadcasting, relating to the field of quantum information science and technology. It includes a silicon substrate layer 1; a silicon dioxide layer 2 disposed on the silicon substrate layer 1; and a thin-film lithium niobate device layer 3 disposed on the silicon dioxide layer 2. The thin-film lithium niobate device layer 3 contains a microring resonator 4 and a ridge waveguide 5 for coupling light into the microring resonator 4. The coupling structure between the ridge waveguide 5 and the microring resonator 4 is a sliding rail coupling structure, enabling both near-infrared and visible light to couple with the microring resonator 4 through this coupling structure. The microring resonator 4 has a periodic polarization structure, represented by dark and light stripes in the microring resonator 4. This invention provides a quantum light source that simultaneously satisfies wide bandwidth, ultra-narrow bandwidth, and high brightness, and can generate entangled photon pairs covering multiple DWDM standard channel wavelengths.

The application relates to an on-chip spectrometer and a spectrum measurement system. The on-chip spectrometer comprises a tunable filter part, a reflective arrayed waveguide grating part and an integrated photodetector part, wherein a reflector is connected to the end of the equal-difference arrayed waveguide of the reflective arrayed waveguide grating, and only a single star coupler is contained, the layout mode of the equal-difference arrayed waveguide is no longer limited, the length difference between adjacent waveguides is no longer limited, the free spectral range of the reflective arrayed waveguide grating can be very large, and the measurement bandwidth of the on-chip spectrometer will be larger. Meanwhile, a micro-ring resonator with a free spectral range slightly larger than the reflective arrayed waveguide grating and a resonant wavelength that can be adjusted is used to perform high-resolution filtering on the light signal to be measured. Therefore, the application can realize high-resolution and large-bandwidth light signal detection and analysis.

This invention proposes a self-reference balanced detection optical communication method and system based on the correlation of symmetrical comb teeth pumped by a chaotic microcomb. The method utilizes an on-chip microring resonator to generate a chaotic optical frequency comb. At the transmitting end, one comb tooth is selected as the communication carrier, while the reference comb teeth, which are symmetrical about the pump frequency, are bypassed and retained. The modulated communication carrier and the bypass light containing the reference comb teeth are re-beamed and transmitted. At the receiving end, the modulated carrier and the symmetrical reference comb teeth are filtered out by a wavelength selection device and input into a balanced photodetector for differential detection in the optical domain. The highly correlated intensity fluctuations between the two comb teeth are used to suppress the chaotic background, thereby recovering the signal. This invention eliminates the need for an independent chaotic synchronization source, significantly reducing system complexity, and possesses multi-channel expansion potential, making it suitable for highly integrated secure optical communication scenarios.

A hybrid microring resonator (MRR) device is provided. The device has an MRR waveguide composed of a first arc portion made of a first waveguide material and a second arc portion made of a second waveguide material. The first waveguide material has at least one optical property providing a tunability of the resonant wavelength of the MRR waveguide. A pair of optical vias optically connect the first arc portion and the second arc portion. A tuning mechanism is coupled to at least the first arc portion for tuning the resonant wavelength of the MRR waveguide. Systems such as optical modulators, external cavity lasers and optical filters incorporating hybrid MRR devices are also presented.

This invention discloses a compact 2-bit directional logic multiplier based on microring resonators, comprising 11 strip waveguides and 6 microring resonators. A novel tunable microring resonator is formed by wrapping the microring resonators with an HfO2 insulating layer and an ITO activating material. AU electrodes are led out from the activating material layer and the outer silicon-based waveguide, respectively. Applying voltages of 2.35V and 0V between the two AU electrodes controls the ITO activating material layer, achieving the purpose of controlling the microring resonator to achieve the on / off state. Through a combination of series and parallel connections, the 6 microring resonators are combined to achieve fast 2-bit multiplication. The multiplier's computational unit size is only 43μm × 25μm, with a compact structure, enabling fast 2-bit multiplication. The multiplier's insertion loss is 0.34dB, significantly reducing the insertion loss. This demonstrates that the multiplier achieves both smaller size and lower insertion loss, exhibiting high efficiency and feasibility.