22 results about "Light wave" patented technology

In relation to an optical modulator (e.g., an RZ optical modulator) formed from a plurality of Mach-Zehnder optical modulators, in an attempt to make the optical modulator compact and realize a low drive voltage, the optical modulator is formed by comprising a plurality of Mach-Zehnder optical modulators, each including a substrate exhibiting an electro-optical effect, an optical waveguide formed on the substrate, and electrodes formed in the vicinity of the optical waveguide. The plurality of Mach-Zehnder optical modulators are arranged on the substrate and connected into multistage.

The invention discloses a target device, a control device, and an identification method and system of the target device. The identification method of the target device comprises the following steps that firstly, the control device detects a flashing sequence generated by the target device, wherein the flashing sequence is obtained through the method that the target device conducts light modulation on light waves of a light source of the target device through identification information of the target device; secondly, the control device conducts demodulation on the detected flashing sequence so that the identification information of the target device can be obtained; thirdly, the control device judges whether the obtained identification information exists in an association table storing identification information of a plurality of known target devices and attribute information corresponding to the identification information in advance or not, if not, the fourth step is executed, and if yes, the fifth step is executed; fourthly, according to a user request, the identification information and the attribute information corresponding to the identification information of the target device are loaded through the control device in the association table; fifthly, the attribute information of the target device is displayed through the control device. By the adoption of the technical scheme, identification of the target device is easily achieved in a user-friendly mode.

The invention provides an all-optical threshold device based on two-dimension material saturated absorption effect. The device comprises an optical amplifier arranged in the light transmission direction, and a saturable absorber connected with the optical amplifier, wherein the saturable absorber comprises an optical waveguide and a two-dimensional material covering the surface of the optical waveguide. The device is quite simple in structure, non-linear optical fiber or non-linear PPLN semiconductor devices are not needed, and the defects of the prior art that loss is large, stability is poor and cost is high are overcome. By the adoption of the device, the signal to noise ratio of received signals is increased, signal quality is improved, and the reception judgment performance of an optical communication system can be improved. The invention further provides a method for preparing the all-optical threshold device. The method comprises the steps of coating the surface of the optical waveguide with the two-dimensional material to form the saturable absorber, and connecting the optical amplifier with the saturable absorber through optical fiber to form the all-optical threshold device based on two-dimension material saturated absorption effect. The all-optical threshold device can be used for all-optical signal processing.

The present invention provides an optical waveguide including: a cladding; at least one core embedded in the cladding; and a colored layer that is provided at a portion substantially overlapping with the core when viewed from a direction substantially perpendicular to the principal surfaces of the optical waveguide, and that is not in contact with the core.

The invention relates to the field of topological photonic crystals and integrated photonic chips, and discloses an optical communication waveband wavelength division multiplexing silicon-based energy valley photonic crystal structure which comprises a silicon substrate which is divided into four areas through three boundaries, wherein first circular air holes and second circular air holes in the four areas are arranged in a triangular lattice staggered mode and form four topological waveguide structures at the boundary, and a second topological waveguide and a fourth topological waveguide located on the two sides respectively adopt air holes with different radiuses. Light waves of the two wave bands enter from the first topological waveguide, one wave band exits from the second topological waveguide, the other wave band exits from the fourth topological waveguide, and the structure can be used for achieving communication optical band wavelength division multiplexing on a micro-nano structure.

The invention discloses a large-gradient free hook face measurement method. The method comprises the following steps that: applying a certain angle to a free hook face to be measured to finish the spatial frequency modulation of a free curve diffraction object light wave, and collecting by an image sensor; regulating a plurality of angles, recording multiple frames of holograms of which the free hook faces have different angles, then, through an image processing algorithm, finishing selecting the stripe sparse subarea of each frame of hologram, and recovering the subarea three-dimensional structure of the modulated free hook face to be measured through a digital reconstruction algorithm; and finally, according to a demodulation algorithm, recovering the subarea three-dimensional structureof the original free hook face to be measured, utilizing a proper stitching algorithm to realize the wavefront data fitting of multiple frames of subareas, and therefore, recovering the three-dimensional surface shape information of the free hook face. Through the introduction of an inclination angle, the collection process of free hook face high-frequency information is realized, and a new solution is provided for free hook face measurement.

A light wave type electric water heater, comprising a shell, a water tank and an electric heating body, is characterized in that: the water tank is in the shape of a groove with an opening down along the length direction and two ends are open; the bottom of one side wall of the water tank has a cold water inlet The bottom of the water pipe and the other side wall is provided with a hot water outlet pipe; the electric heating body is a light wave tube; the bracket is fixed on the openings at both ends of the water tank, and the light wave tube is fixed on the bracket. Due to the adoption of such a structure, the light wave tube is separated from the water, eliminating the hidden danger of electric leakage and having a long service life; at the same time, the light wave has a bactericidal effect on water.

An object of the present invention is to provide an optical waveguide element that effectively diffuses charges accumulated in a substrate, and suppress DC drift or temperature drift. The optical waveguide element includes a substrate having an electro-optical effect, optical waveguides formed in the substrate, a buffer layer (BF layer) formed on the substrate, and modulation electrodes (signal electrode and ground electrode) that are formed on the buffer layer and modulate optical waves propagating through the optical waveguides, a charge diffusion layer that diffuses charges generated in the substrate is formed between the substrate and the buffer layer, and the charge diffusion layer is electrically connected with a ground electrode constituting the modulation electrode.

The invention discloses a method for conjugation of Idesia polycarpa oil and purification of conjugated linoleic acid, and relates to the technical field of purification of the conjugated linoleic acid. The Idesia polycarpa oil is prepared through the following steps: subjecting prepared crude Idesia polycarpa oil to ultrasonic-assisted phospholipase C degumming treatment, and after degumming is completed, carrying out centrifugal separation so as to obtain degummed Idesia polycarpa oil; placing the degummed Idesia polycarpa oil, propylene glycol and an inorganic strong basic catalyst into a container, and introducing nitrogen gas into the container; subjecting the degummed Idesia polycarpa oil, propylene glycol and the inorganic strong basic catalyst to a reaction under heating under the action of light wave, wherein the light-wave power is 300 to 500 W, and duration time is 1 to 1.5 hours; subjecting a reaction material to cooling to room temperature, then carrying out stirring under the protection of nitrogen gas, and adding a strong acid so as to reduce the pH value of the reaction material to 4 to 5; transferring the reaction material into a liquid distribution vessel, carrying out standing for half an hour, and discharging waste liquid at the bottom layer; and carrying out repeated washing with distilled water until the pH value of the washing water is 6 to 7, and removing impurities so as to obtain the conjugated linoleic acid. The method provided by the invention has the following advantage: the time of purification is greatly shortened.

An optical sensing system for sensing a target object is provided. The optical sensing system includes a light source, an optical wave plate, a polarizing beam-splitting element, a reflecting element, and a sensing element. The light source provides a first linearly polarized light beam. The optical wave plate is adapted to convert the first linearly polarized light beam into a circularly polarized light beam and convert the circularly polarized light beam into a second linearly polarized light beam. The polarizing beam-splitting element is adapted to allow the first linearly polarized light beam to pass and reflect the second linearly polarized light beam. The reflecting element is adapted to reflect the circularly polarized light beam to the target object and to reflect the circularly polarized light beam from the target object. The sensing element is disposed on a transmission path of the second linearly polarized light beam.

The invention discloses a light-wave stove with low energy consumption and safe use. The stove comprises a stainless steel stove body, wherein a hearth shell made of a refractory and heat insulating material is arranged inside the stainless steel stove body; and an infrared light-wave pipe is arranged inside the hearth shell, and is connected with a controller through lead wires. The light-wave stove has the advantages that: the light-wave stove with the structure converts infrared light energy into heat energy, has less consumed energy, no pollution, no naked flame in a using process, safe use and no light-wave radiation generation.

The invention discloses an ultraviolet-visible two-color detector. The detector comprises a detector body, wherein the detector body comprises a p-type GaN material layer, a BN two-dimensional material layer and a p-type topological insulator thin film material layer which are sequentially stacked from bottom to top. Specifically, the p-type GaN material layer, the BN two-dimensional material layer and the p-type topological insulator thin film material layer which are sequentially stacked from bottom to top are used for forming the detector body, the p-type topological insulator thin film material layer is provided with an upper metal electrode, the p-type GaN material layer is provided with a lower metal electrode, by adjusting bias voltages applied to the upper metal electrode and the lower metal electrode respectively, the p-type GaN material layer can detect an ultraviolet wave band, the p-type topological insulator thin film material layer can detect a visible light wave band, detection of the ultraviolet wave band and the visible light wave band is achieved, and the responsivity of the device is effectively improved.

According to a peep-proof display method based on wavefront distortion compensation, a tunable phase plate array covers the front portion of a displayer, screen light can penetrate through the phase plate array and generate wavefront distortion, and normal information displayed on a screen cannot be read no matter screen data is specially provided for a user or a scout person; and screen data is specially used for a user to wear wavefront distortion compensation glasses, screen light wavefront distortion generated by the phase plate is compensated, and the user can see the screen clearly. The phase distribution of the tunable phase plate array and the phase distribution of the wavefront distortion compensation glasses are always kept complementary, and the two parties are synchronous and consistent through a shared key for wireless communication interaction; and the scout person cannot know the content of the secret key, and screen information cannot be read in real time even if the scout person has the wavefront distortion compensation capability. According to the invention, technologies of wireless communication, key distribution, adaptive optics and the like are effectively combined, non-cooperative personnel are effectively prevented from peeping into security switching information displayed on a screen, and a brand new solution is provided for prevention of visual hackers in a mobile office environment.

The invention discloses a multi-path switching value parallel transmission system and method based on optical fibers. The transmission system comprises a sending unit, a distribution unit and M receiving units. The transmitting unit comprises n optical transmitters, each optical transmitter corresponds to one signal source, and the n optical transmitters transmit laser signals with different frequencies, which are transmitted by each signal source, into one optical fiber coupler through optical fibers connected with the n optical transmitters for coupling; wherein the optical fiber coupler inthe sending unit is in communication connection with the optical fiber coupler in the distribution unit through an optical fiber, the distribution unit distributes laser signals to different receivingunits through the optical fiber coupler, and each receiving unit comprises the laser signals sent by each signal source; the receiving unit comprises an optical wavelength division multiplexer, and the optical wavelength division multiplexer is in communication connection with the n photoelectric switches through n optical fibers. According to the transmission system, the problems of relay fault,signal transmission interference and incapability of self-checking caused by controlling the switching value through a relay in the prior art are solved.

An object of the present invention is to provide an optical wave guide element for making the miniaturization of the entire device including the optical wave guide element possible, by connecting optical fiber for incoming and outgoing radiation to the optical wave guide element, so that the optical wave guide element and the optical fiber are positioned at an angle of 90°, as well as to provide a manufacturing method for the same.

An LED-type sleep regularity corrector for correcting the abnormal sleep regularity is composed of a base matched with human neck, at least one LED module, a controller, a switch, and a battery unit.