In order to inhibit the effects of atmospheric turbulence by using the non diffracting, self recovery and self bending property of Airy beam and realize the remote wireless optical communication, the intensity evolution of partial

In order to analyze the influence of different mixing patterns of mixed particles on the quantum satellite communication, according to the spectral distribution function of hazeparticles and water-cloud particles and the extinctio

A method of measuring atmospheric transmittance from a single frame of multi-spectral image for non and weak absorption waveband was proposed, which can be applied to evaluate and correct atmospheric attenuation effect in optoelec

A mobile lidar system was developed which can be used to measure the lower layer atmospheric SO2. The lasers with wavelength of 300.05 nm and 301.50 nm are adopted in this system. The laser beams, produced by two narrow linewidth

In order to analyze the influence of atmospheric turbulence on the performance of free space Quantum Key Distribution (QKD), the turbulence is modeled as randomly distributed atmospheric bubbles so as to conceive the propagation p

By analyzing the electronic noise sources of shot noise photodetector based on the L-C coupled transimpedance amplifier circuit, the effect of the parasitic capacitance of the utilized inductance on the electronic noise was theore

Adopting modified Sagnac interference grating writing system, the fiber Bragg gratings were written in two kinds of As2S3 chalcogenide fibers with different cladding diameter by use of a near bandgap light at 532 nm and +1/-1 diff

A scheme of coaxial reflective laser communication antenna added an axicon pair was proposed. This antenna could rearrange the light intensity distribution of the incident beam, leading to a great reduction of the energy loss caus

Optical microsphere (OM) cavities supporting Whispering Gallery Modes (WGMs) have received much attention because of their high quality factor (Q). The study analyzes the Fabry-Perot (FP) cavity and OM cavity theories. An OM cavit

The dual Mach-Zehnder interferometer-type distributed optical fiber sensing system is susceptible to environmental noise and system noise due to its high sensitivity, which makes a large error in calculating the position of the di

In order to compensate the transmission limits of the high-speed signal caused by dispersion of the fiber, an all-solid dual-concentric-core photonic crystal fiber for dispersion compensation was proposed. Firstly, the mode coupli

A kind of cladding-carved Distributed Bragg Reflection (DBR) fiber laser was proposed for fiber laser refractive index detection. The core sensing unit is a single longitudinal mode dual polarization DBR fiber laser, the beat sign

By a full-vector finite-element method, the dual-core photonic crystal fiber for hydrostatic pressure sensing with two layers of air holes in the cross-section missed was designed and optimized, The mode field radius and numerical

In consideration of low nonlinearity and maintaining of loss and dispersion when few-mode fiber is operated in single mode, the coexistence scheme of quantum-classical signals based on few-mode fiber operated in single mode was pu

For the noise amplification problem during gradient transform based image enhancement, an improved algorithm combined with Gaussian curvature filter was proposed. First, the nonlinear gradient transformation is utilized for image

In order to filter out the noise points of the spine 3D model effectively,a denoising and spreading method for spine 3D model based on bilateral filter operator was proposed.The bilateral filter operator is used to extract the con

According to the low accuracy and low stability of the single feature-based method for tungsten ore primary selection, a multi-feature fusion based on fuzzy support vector machine and D-S evidence theory was proposed. Firstly, the

In order to realize the detection and recognition of underwater acoustic signals, the characteristic expression of coherent detection signal under spectral aliasing was given theoretically, and a kind of signal demodulation method

A self-calibration three-dimensional object surface measurement method with three image frames based on Gram-Schmidt orthonormalization method was proposed. The phase shift fringe map was obtained by translation grating, and the f

In order to detect and recognize rotors based on laser micro-doppler effect, the modulation of laser echo by rotating area rotor is studied. Micro-doppler echo model of rectangular area rotor is built using the physical optics met

In order to solve the problem that stereo matching of binocular underwater image could not meet conventional epipolar constraint in the air, a semi-global algorithm for dense stereo matching of underwater image based on depth cons

Based on the theory of the Fresnel polarization reflectance, the polarization factor was put forward by decomposing the incident light into electric vector, which could affect the intensity of glare and play a leading role during

A set of 6×, 10×, 16×, 25× and 40× magnifications of digital slit-lamp microscope optical system is designed with Zemax. The optical system structure of traditional stereo slit-lamp microscope is analyzed, on its basis, the digita

In order to satisfy the high precision calibration of the detection ability of star sensor in different spectrum distribution, a design method of star simulator light source system with spectrum adjustable based on digital micro-m

This paper presented a self-designed scanning laser optical tomography mesoscopic imaging system based on LabVIEW and explored its capabilities to image intact biological organs or tissues. The system is consisted of an aligned la

An ultra-short polarization splitter based on dual-core Photonic Crystal Fiber (PCF) with a gold wire filled into the air hole between the two cores has been proposed and analyzed with the finite element method. Surface Plasmon Po

A gain-flattened Raman fiber amplifier was proposed by using the method of cascading photonic crystal fiber, which improves the Raman gain coefficient and reduces the gain flatness of the traditional Raman fiber amplifier. Based o

In order to further investigate the lateral leakage loss behavior of shallowly-etched rib waveguides on silicon-on-insulator, a kind of shallowly-etched rib waveguide with non-rectangular crosssection was proposed and analyzed. A

The Casimir interaction of a sandwich structure was investigated, where the structure was formed by means of inserting a dispersive metamaterial slab between the metal slab and the dielectric substrate. Based on Casimir-Liftshitz

The monolayer grapheme film was employed in the metal structures when researching the spontaneous emission of atoms. The spontaneous emission of atoms was controlled by the special photoelectric properties of graphene. The local d