110 results about "Electro-optic effect" patented technology

The present invention addresses the problem of providing: a composition and a polymer compound which are each capable of suppressing aggregation of a dye that has a nonlinear optical effect in a nonlinear optical material, and exhibiting a higher electro-optic effect with respect to the absorbance after poling; a nonlinear optical element which is obtained using the composition; and an optical modulator which comprises the nonlinear optical element and operates on the basis of an electro-optic effect. The present invention pertains to a composition which contains a compound represented by formula (1) and a compound represented by formula (3), wherein the content of the compound represented by formula (3) is 0.0001 mol% to 25 mol% inclusive relative to the total content of the compound represented by formula (1) and the compound represented by formula (3).　(Definitions of groups are as set forth in the description.)

An optical device is described. The optical device includes a waveguide, a first engineered electrode, and a second engineered electrode. The waveguide includes at optical material(s) having an electro-optic effect. The optical material(s) include lithium. A portion of the waveguide has a waveguide width. The first engineered electrode includes a first channel region and first extensions protruding from the first channel region. The first extensions are closer to the portion of the waveguide than the first channel region is. The second engineered electrode includes a second channel region and second extensions protruding from the second channel region. The second extensions are closer to the portion of the waveguide than the second channel region is. A first extension of the first extensions is a distance from a second extension of the second \extensions. The distance is less than the waveguide width.

Provided is an optical control element capable of arranging an input portion and an output portion of an optical waveguide on the same side of a substrate in which the optical waveguide is formed, and capable of reducing differences in the configuration of each branch waveguide while minimizing optical path differences between branch waveguides. The optical control element has a substrate (1) having an electro-optic effect, an optical waveguide (2) formed in the substrate, and a control electrode that controls an optical wave propagating in the optical waveguide, characterized in that an input portion (incident light (L1)) and an output portion (emitted light (L2)) of the optical waveguide are formed on the same side of the substrate, the optical waveguide has at least one Mach-Zehnder type optical waveguide portion (MZ) having two branch waveguides (21, 22) branched from one optical waveguide and recombining the two branch waveguides to form one optical waveguide, and the branch waveguides have an even number of return portions (A1, A2).

The invention relates to the technical field of optical sensing, in particular to a metasurface waveguide array based on a silicon carbide substrate and a spectrum sensing system. The system comprises a coupling modulation module, a waveguide transmission module and a spectral analysis module, the coupling modulation module realizes multi-physical field coupling modulation through a nonlinear coupling superposition principle of a thermo-optical effect and an electro-optical effect; the waveguide transmission module selectively activates waveguide channel combination based on a neural network prediction model and dynamically optimizes transmission parameters through an online reinforcement learning algorithm; the spectral analysis module performs environment compensation correction on the spectral characteristic parameters and outputs a corrected recognition result; according to the invention, multi-physics field coupling modulation, intelligent waveguide channel selection and environment adaptive compensation technologies are innovatively combined, the problems of insufficient precision and poor adaptability of a traditional spectrum sensing system in a complex environment are solved, and high-precision and adaptive spectrum sensing is realized.

An electro-optic device is described. The electro-optic device includes at least one optical material having an electro-optic effect. Further, the optical material(s) include lithium. The optical material(s) have a slab and a ridge waveguide. The slab has a top surface. The slab includes free surfaces. Each of the free surfaces is at a nonzero angle from the top surface of the slab and mitigates stress in the slab.

An electro-optic device is described. The electro-optic device includes at least one optical material having an electro-optic effect. Further, the optical material(s) include lithium. The optical material(s) have a slab and a ridge waveguide. The slab has a top surface. The slab includes free surfaces. Each of the free surfaces is at a nonzero angle from the top surface of the slab and mitigates stress in the slab.

An optical waveguide component, a preparation method therefor, and an electro-optic modulator are disclosed. The optical waveguide component includes an insulating substrate, a waveguide core, at least two electrodes, and a cladding layer. The at least two electrodes and the waveguide core are all disposed on the insulating substrate, the at least two electrodes are distributed on two sides of the waveguide core, and the cladding layer covers at least a part of an outer wall of the waveguide core. The waveguide core includes an electro-optic material having an electro-optic effect. A refractive index of the insulating substrate is less than a refractive index of the waveguide core. A refractive index of the cladding layer is greater than the refractive index of the waveguide core.

The invention discloses a photonic crystal surface emitting laser based on electro-optical effect modulation and an emission angle and wavelength regulation and control method thereof, and belongs to the field of laser devices. The photonic crystal surface emitting laser comprises a substrate layer, an isolation layer and an active LiNbO3 layer; the isolation layer is a SiO2 isolation layer or an air isolation layer, and the air isolation layer is formed by etching the SiO2 isolation layer through a SiO2 etching agent; the active LiNbO3 layer is made of erbium-doped LiNbO3 or ytterbium-doped LiNbO3, and periodic holes are etched in the surface of the active LiNbO3 layer to form the photonic crystal layer. The photonic crystal surface emitting laser is prepared by using the active electro-optical effect material, the electro-optical effect material is combined with the photonic crystal surface emitting laser, and the emission angle and the emission wavelength are regulated and controlled through the electro-optical effect of LiNbO3 and the diffraction effect of the photonic crystal.

Disclosed is a system and method for solid-state 2D optical phased arrays (OPAs), which are fabricated from InGaN / AlGaN multiple quantum wells (MQWs) and AlyGa1-yN / AlxGa1-xN (y<x) MQWs. The InGaN / AlGaN MQWs and AlyGa1-yN / AlxGa1-xN (y<x) MQWs include alternating p-type and n-type layers to form p-n-p-n MQW structures to allow the OPA to operate in the reversed biased configuration to further minimize the operating current and heat generation. The phase in each pixel within the OPA will be controlled independently via electro-optic effect in III-nitride MQWs by varying the voltage in each pixel by a Si CMOS array to achieve the manipulation of the distribution of optical power in the far field and steering of the main laser beam. The present disclosure is applicable to a wide range of applications, including the operation of LIDAR systems, laser weapons, laser illuminators, and laser imaging systems.

The invention discloses a magneto-optical effect-based dynamic zooming method and an optical system, and the method comprises the steps: arranging at least one magneto-optical crystal between a pre-amplifier and a main amplifier, so as to achieve the dynamic zooming through the magneto-optical effect; wherein the magneto-optical crystal is obtained by combining anisotropic materials with matched refractive indexes, and the anisotropic materials are processed into complementary parabola shapes. According to the invention, the magneto-optic effect is utilized to realize dynamic zooming, and the mode of complementary combination of the crystals with matched refractive indexes is utilized to solve the problem that the additional wavefront shape does not conform to the demand. Compared with an electro-optical effect scheme, an applied magnetic field is a uniform magnetic field along a transmission direction, so that a depolarization problem caused by a transverse component is avoided; compared with the scheme of aperture division, grating division and the like, the dynamic zooming can be realized on the premise of not influencing the output capability of the laser.

The invention provides a method for manufacturing an optical waveguide element. A method for manufacturing an optical waveguide element includes: preparing a structure including a substrate and a ridge-shaped optical waveguide layer that is provided on the substrate and is composed of a crystal material having an electro-optical effect; forming a cladding entirety covering the optical waveguide layer by using a formed film; and performing a heat treatment on the structure after the formation of the cladding layer.

A substrate configured for an electro-optic device and an electro-optic device formed using the substrate are described. The substrate includes a semiconductor substrate, an insulating layer, and at least one thin film optical material. The semiconductor substrate includes a trap-rich layer and an underlying substrate layer. The insulating layer is on the semiconductor substrate, The trap-rich layer is between the underlying substrate layer and the insulating layer. The thin film optical material(s) have an electro-optic effect and are on the insulating layer.

The invention belongs to the technical field of laser devices, and relates to a bicrystal transverse electro-optical Q-switch which comprises two electro-optical crystals, electrodes, wires and a shell wrapping the electro-optical crystals. The electro-optical crystal is a potassium boron niobate crystal, the chemical formula of the electro-optical crystal is K3Nb3B2O12, the electro-optical crystal comprises a first electro-optical crystal and a second electro-optical crystal, the electro-optical crystal adopts a transverse electro-optical effect, and the first electro-optical crystal and the second electro-optical crystal have the same geometrical shape; the main axes of the first electro-optical crystal and the second electro-optical crystal mutually rotate by 90 degrees around the light passing direction. The electro-optical Q-switch is low in driving voltage, the driving voltage is reduced by 28%-95.6% compared with an existing commercialized electro-optical Q-switch under the condition that the crystal size is kept the same, and the important requirement of low-voltage driving electro-optical devices is met. The electro-optical Q-switch is simple in design, does not use a quarter-wave plate, is beneficial to miniaturized production, and has the advantages of being easy to industrialize and the like.

The application discloses a thin-film lithium niobate-based electro-optic polarization modulator, characterized by comprising a first single-mode optical fiber, an input optical coupler, an electro-optic modulation phase shift region, an output double-waveguide vertical direct receiving coupler and a second single-mode optical fiber connected in sequence, wherein the modulated light enters from the first single-mode optical fiber, is coupled into the electro-optic modulation phase shift region through the input optical coupler, is coupled into the second single-mode optical fiber through the output double-waveguide vertical direct receiving coupler after being modulated in the electro-optic modulation phase shift region, and exits from the second single-mode optical fiber. The application is based on X-cut or Y-cut thin-film lithium niobate, the electric field of the electro-optic modulation region is along the Z-axis direction, the excellent electro-optic effect of lithium niobate material is effectively utilized, the electro-optic polarization modulator has the advantages of fast response speed, low driving voltage and low power consumption. Compared with the polarization multiplexing device with a length of hundreds of microns, the compactness of the structure is greatly improved, and the miniaturization of the device is facilitated.

An optical modulator (10) is provided with an optical waveguide (1) containing a material having an electro-optical effect, a first electrode (2), and a second electrode (3). The first electrode (2) contains a semiconductor material. The second electrode (3) contains a metal material and is disposed so as to form a potential difference with the first electrode (2) and apply an electric field to the optical waveguide (1).

There is provided a composite substrate in which peeling is significantly suppressed, light propagation loss is small when used as an electro-optical element, and high-speed and low-voltage drive is possible, and which can achieve an extremely thin electro-optical element capable of maintaining excellent reliability even under a severe high-temperature environment. A composite substrate for an electro-optical element according to an embodiment of the present invention includes: an electro-optical crystal substrate having an electro-optical effect; a first high dielectric layer; a second high dielectric layer; and a support substrate in the stated order. The first high dielectric layer and the second high dielectric layer are directly joined to each other, and an amorphous layer is formed at a joining interface between the first high dielectric layer and the second high dielectric layer.

The present application discloses a photonic integrated circuit, control method, device and medium, which are related to the field of optics. By controlling the electro-optic effect of the lithium niobate layer and the oscillation signal of the microwave oscillator through an external electrical signal, any effective refractive index distribution can be achieved in theory, realizing the programmable control of the metastructure waveguide, and promoting the reusability and sustainable use of the device; it has the ability to reset functions, and can switch in real time according to the written external voltage program, realizing true artificial intelligence; multiple functions can be achieved through a single structure, reducing production costs and technical barriers, and providing a way of scalability, with strong application potential; compared with thermo-optical and acousto-optic modulation technologies, the electro-optical control and microwave control provided by the present application have fast modulation speed, low cost and high repeatability; compared with two-dimensional materials and nonlinear modulation technologies, the electro-optical control and microwave control provided by the present application have stable working conditions and are easy to process.

The application provides a thin-film lithium niobate-based optical frequency comb generation device and method, and belongs to the technical field of optical frequency combs, and comprises a pumping unit for providing single / multi-frequency laser; a microwave modulation unit for performing electro-optic modulation on a normal dispersion double-micro-ring resonant cavity unit to generate modulation sidebands; and the normal dispersion double-micro-ring resonant cavity unit generates an optical frequency comb through normal dispersion, electro-optic effect and third-order nonlinear effect. The single / multi-frequency laser is coupled to the normal dispersion double-micro-ring resonant cavity unit based on thin-film lithium niobate, and the normal dispersion, electro-optic effect and third-order nonlinear effect are combined to realize optical frequency comb spectrum widening and spectrum envelope flattening.

The invention provides an electro-optical effect voltage sensor temperature compensation method and device, and belongs to the field of electro-optical effect voltage sensors. The method comprises the following steps: acquiring a working environment and operation time of a target electro-optical effect voltage sensor; according to the operation time and a preset temperature prediction model, obtaining an initial prediction temperature of the target electro-optical effect voltage sensor in the prediction time period; the initial prediction temperature is corrected according to the working environment, and the prediction temperature of the target electro-optical effect voltage sensor in the prediction time period is obtained; and performing temperature compensation on the measurement voltage of the target electro-optical effect voltage sensor according to the predicted temperature and a preset temperature compensation model to obtain the temperature compensation voltage of the target electro-optical effect voltage sensor. According to the invention, temperature compensation can be carried out on the electro-optical effect voltage sensor without a temperature sensor, so that the target electro-optical effect voltage sensor can be better suitable for a high-voltage measurement scene.

This application provides a gradient-doped ferroelectric thin film device and its fabrication method, relating to the field of optoelectronic device technology. The gradient-doped ferroelectric thin film device comprises, from bottom to top, a substrate, a buried oxide layer, a buffer layer, and a ferroelectric thin film material layer; the ferroelectric thin film material layer is doped with impurity ions, with the doping concentration of the impurity ions increasing sequentially from bottom to top. This application, by employing a bottom-up incremental gradient doping design, optimizes the interface defects and internal stress of the ferroelectric thin film, overcomes the problem of lattice mismatch between ordinary ferroelectric thin films and the substrate layer, achieves improved crystal quality and enhanced electro-optic coefficient, and effectively improves the electro-optic effect.

The invention provides a gradient doped ferroelectric film device and a preparation method thereof, and relates to the technical field of optoelectronic devices. The gradient doped ferroelectric thin film device comprises a substrate, a buried oxide layer, a buffer layer and a ferroelectric thin film material layer which are sequentially stacked from bottom to top, impurity ions are doped in the ferroelectric film material layer, and the doping concentration of the impurity ions is sequentially increased from bottom to top. By adopting the gradient doping design increasing from bottom to top, the interface defect and the internal stress of the ferroelectric film are optimized, the problem of lattice mismatch between a common ferroelectric film and the substrate layer is solved, the crystal quality is improved, the electro-optical coefficient is enhanced, and the electro-optical effect is effectively improved.

The present application provides a kind of light modulator, light source module and light modulation method capable of high speed and stable control of the output light of light modulator, and excellent response and stability.Light modulator (101) is characterized in that, with: light modulation element (11), multiple optical waveguides are formed in thin film by material with electro-optic effect;Electrode is arranged on the thin film, and multiple optical waveguides are applied with electric field;Driving part (driving circuit (120)), which applies modulation voltage to electrode;Bias application part (bias application circuit (130)), which applies bias voltage to electrode;And feedforward control part (feedforward control circuit (150)), which compensates the DC drift generated in multiple optical waveguides, wherein the feedforward control part makes the bias voltage output by bias application part change with time based on the transfer function set in advance according to the characteristics of DC drift.

The invention discloses a multifunctional sensor based on an electro-optical effect photon spin Hall effect, and relates to the technical field of optical sensing, in particular to the multifunctional sensor based on the electro-optical effect photon spin Hall effect, which comprises a sensor consisting of an LN prism layer, an Ag film layer, a sensing medium layer and an external electric field, the LN prism layer, the Ag thin film layer and the sensing medium layer are sequentially arranged in the incident direction of incident ray polarized light, the LN prism layer is in direct contact with the Ag thin film layer, and the Ag thin film layer is in direct contact with the sensing medium layer. According to the multifunctional sensor based on the electro-optical effect and the photon spin Hall effect, the LN prism layer, the Ag thin film layer and the sensing medium layer are combined, different external electric field configurations are applied, namely, the electric field configurations are set to be LN + Ag or LNE + Ag, the concentration of SO2 in air and plane tiny angle changes can be measured, one device has multiple purposes, and the sensor is simple in structure, convenient to use and high in practicability. And the dual requirements of environment monitoring and precise measurement are met.

This application discloses an optical sensing structure and an optical detector, belonging to the field of integrated optical sensing technology. It aims to achieve on-chip integrated construction and efficient electro-optical control of high-order singular surfaces to improve the signal response intensity and weak signal detection limit of optical sensing. The optical sensing structure includes an optical waveguide, multiple micro-ring resonators, a circular aperture array, and multiple sets of metal electrodes. The optical waveguide and multiple micro-ring resonators are formed by etching optically functional thin films with electro-optic effects. The multiple micro-ring resonators are arranged sequentially along the extension direction of the optical waveguide and are evanescently coupled to it. The circular aperture array is disposed at the end of the optical waveguide to reflect the transmitted optical signal, forming a closed optical loop. Multiple sets of metal electrodes are respectively arranged in pairs on both sides of the optical waveguide and segmented along the waveguide, corresponding to the optical waveguide regions between two adjacent micro-ring resonators and between the micro-ring resonators and the circular aperture array away from the input end of the optical waveguide.

An optical apparatus and device for integrated opto-electronic platforms to manipulate and control guided modes using electro-optic effects in an electromagnetic waveguide. The electromagnetic waveguide comprises a first semiconductor layer, an electro-optical material layer, a metal layer adjacent to the electro-optical material layer, and a second semiconductor layer. The optical apparatus is configured to transfer light in the electro-optical material layer, the electromagnetic waveguide is configured to create coupled plasmonic modes in the electro-optical material layer, and the electro-optical material layer is configured to modulate the light based on a voltage applied across a thickness of the electro-optical material layer.

This invention relates to the field of optical sensing technology, and more particularly to a metasurface waveguide array and spectral sensing system based on a silicon carbide substrate. The system includes a coupling modulation module, a waveguide transmission module, and a spectral analysis module. The coupling modulation module achieves multi-physics coupling modulation through the nonlinear coupling superposition principle of thermo-optic and electro-optic effects. The waveguide transmission module selectively activates waveguide channel combinations based on a neural network prediction model and dynamically optimizes transmission parameters through an online reinforcement learning algorithm. The spectral analysis module performs environmental compensation correction on spectral feature parameters and outputs the corrected recognition results. This invention innovatively combines multi-physics coupling modulation, intelligent waveguide channel selection, and environmental adaptive compensation technology, solving the problems of insufficient accuracy and poor adaptability of traditional spectral sensing systems in complex environments, and achieving high-precision, adaptive spectral sensing.

An optical device including a waveguide and an electrode is described. The waveguide includes at least one optical material having an electro-optic effect. The electrode includes a channel region and extensions protruding from the channel region. The extensions are closer to a portion of the waveguide than the channel region is.

The invention discloses an optical matrix multiplier, which comprises a laser light source, a grating coupler, a BTO electro-optical modulation array, an MZI waveguide array, a photoelectric detector array and a control unit, and is characterized in that the laser light source generates coherent light with stable wavelength, and the coherent light enters a BTO waveguide after being coupled by the grating coupler and then enters the MZI waveguide array through multi-stage beam splitting; the excellent electro-optical effect of a BTO material is utilized, phase modulation is achieved under electrode driving so as to load matrix element information, and then linear operation of matrix multiplication is completed through interference superposition of an MZI waveguide array. And the output optical signal is converted into an electric signal by the photoelectric detector array and is processed by the control unit to obtain an operation result. The system is compact in structure, high in modulation linearity, high in response speed, low in power consumption and capable of achieving multi-channel parallel optical calculation. Compared with a traditional silicon-based or lithium niobate modulator, higher integration density and stability are achieved, and the calculation efficiency of matrix multiplication in the fields of artificial intelligence, scientific calculation, signal processing and the like is remarkably improved.

An optical device includes a substrate, an optical waveguide, and a first chip and a second chip each of which is mounted on the substrate, includes a material having an electro-optical effect that is higher than that of the substrate, and includes a crystal axis in which the strongest electro-optical effect is exerted. The first chip includes a first electrode that is arranged in the vicinity of an input side first waveguide, and that applies an electric field flowing in the same direction as an orientation of the crystal axis of the first chip to the input side first waveguide. The second chip includes a second electrode that is arranged in the vicinity of an output side first waveguide, and that applies an electric field flowing in the same direction as an orientation of the crystal axis of the second chip to the output side first waveguide.

The present application provides an optical waveguide element, an optical modulation device using the optical waveguide element, and an optical transmission apparatus. The optical waveguide element can make the length of a substrate having an electro-optic effect short and can sufficiently ensure a space required for arrangement of an optical receiving element. An optical waveguide element has a substrate (1) having an electro-optic effect, an optical waveguide (2) formed on the substrate, and an optical receiving element (PD) arranged on the substrate and monitoring an optical wave propagating in the optical waveguide or an optical wave radiated from the optical waveguide, characterized by having a monitoring optical waveguide (22) extending from the optical waveguide to the optical receiving element, the monitoring optical waveguide having a turn-back portion (23) with respect to an outgoing direction of the optical waveguide, and the optical receiving element being arranged at a portion (24) after the turn-back portion of the monitoring optical waveguide.