As there are many different kinds of medicine on the market, it’s significant to regulate medical market and ensure people’s medication safety by identification analysis of different brands of drug. Spectral library discriminant analysis was applied to establish the qualitative identification model for different brands of levocetirizine hydrochloride tablets based on near-infrared diffusion spectroscopy. The spectral pretreatment method used consisted of vector normalization method and derivative method. Then the validation set was used to test the model. The results showed that the model can’t correctly identify two samples of the same manufacturer, but samples from different manufacturers were classified correctly by the discriminant model, and the accuracy was 100%. This method can be used for rapid identification of similar medicines from different manufactures.

A design method using the DSP chip TMS320F28335 as controller and the linear motor motion platform to drive the moving mirror was put forward during the development of the high precision linear scanning Fourier transform infrared (FTIR) spectrometer system. The method can achieve the high quality and resolution of the spectrogram. The advantages and principle of FTIR and the features of TMS320F28335 were introduced. Meanwhile, the design scheme of the motor control system was expounded and the implementation method of the hardware interface circuit and software among DSP, motor, and motor driver was provided. The experiments show that the motor control system has fine stability and high precision of movement. The movement precision can be up to 0.1 μm, guaranteeing the stable and reliable linear motion of the moving mirror.

When compressed sensing imaging system is used to imaging, the related motion between the object and imaging system will lead degradation of resolution of the object image. In order to overcome the interference of motion, additional device is employed to acquire the motion parameter of the object, but in many cases the parameter cannot be obtained. Aiming at this problem, it was proposed to use the correlation of object and speckle motion, and apply speckle motion method to offset the object motion interference. Compressed sensing algorithm parameters used multiple groups of different speckle motion parameters to recover the corresponding object image, and at last the correlation criterion parameters was applied to get the object image without motion interference. The influence of the system point spread function was considered in the algorithm, and the deconvolution method was utilized to obtain the object image without the motion and system point spread function influence. Finally, the digital simulation results confirmed the effectiveness of the proposed algorithm.

Scene monitoring algorithm based on single-pixel imaging system was investigated. The algorithm based on compressed sensing that uses scene detection intensity difference as measured value can be used to obtain a scene change information. The results from the proposed method and traditional method were compared using computer simulation experiments. For a simple binary scene, the accurate change information can be obtained under the sample rate 0.01. For a gray scene, because information becomes large, the number of samples required increases, but at the same number of samples, the proposed method can be used to obtain more accurate results than that of traditional method. Simulation results show that the proposed method can be used to obtain accurate scene change information at low sample rate, and reduce the computational complexity. It will have a reference value in the scene monitoring based on single-pixel imaging system.

According to the second kind of elliptic equation, many new infinite sequence solutions of nonlinear LC circuit equation were constructed with the help of symbolic computation system Mathematica, which include new infinite sequence smooth solutions composed of Riemann theta function, Jacobi elliptic function, hyperbolic function and triangular function, new infinite sequence peak soliton solutions composed of exponential function and triangular function, new compact solutions composed of Jacobi elliptic function and triangular function.

Using the improved G′/G2 expansion method, eighteen groups of exact solutions for Zakharov equation were constructed. As the result, the hyperbolic function solutions, trigonometric function solutions, and rational solutions with arbitrary parameters were obtained. When the arbitrary parameters in hyperbolic function solutions were taken as some special values, the solitary wave solutions can be obtained. When the arbitrary parameters in trigonometric function solutions are taken as some special values, the trigonometric function solutions can be expressed as periodic wave solutions. It is proved that application of improved G′/G2 expansion method can give some new exact solutions of the Zakharov equation, and increase the scope of the solution. This method has a very wide range of application to fields such as nonlinear optics and quantum optics.

Using the modified Clarkson-Kruskal direct method, the symmetries reductions of the Zabolotskaya-Khokhlov equation with a dissipative term were obtained. By solving the reduction equations, a great many of solutions were derived, including the rational function solutions, the trigonometric function solutions, hyperbolic function solutions and so on. The conservation laws were given at last.

A single-longitudinal-mode dual-wavelength fiber laser used to generate millimeter waves was presented. Polarization-maintaining fiber Bragg grating (PM-FBG) was used as wavelength selected component in this laser. Two wavelengths of PM-FBG is orthogonal polarization states, enhance the polarization hole burning effect and effectively reduce the different wavelength competition and achieve stable dual-wavelength output. The Vernier effect of the compound cavity effectively suppresses multi-modes oscillations and realizes single-longitudinal-mode operation. The separation of two wavelength is 0.318 nm (39.8 GHz) and side-mode suppression ratio (SMSR) is more than 50 dB.

A novel construction method of cluster states quantum fuzzy hash utilizing classical-quantum ε-universal hashing family was proposed. Traditional hash and fuzzy hash algorithm are not effective against quantum attacks. Utilizing the method of diamond norm, an optimal subset of hash functions family was constructed and better security on the sense of information theory was guaranteed. Based on the unique physical one-way computation properties of quantum cluster states, the corresponding algorithm is more close to the physical realization. And then, a novel scheme of covert information search in the field of information security and biometrics was presented. The biometrics search algorithm is constructed from the cluster states quantum ε-universal fuzzy hashing. The algorithm can effectively resist the quantum algorithm attack, ensure data storage security and reduce the complexity. Compared to others similar schemes, the algorithm has a more simplified structure. Theoretical analysis shows that the algorithm has higher recognition efficiency and better data security.

The transmission of high-dimensional quantum information can be achieved by the eigenstates of the beam’s orbital angular momentum, which can be used for information encoding to increase the data storage density. The phase encoding method of the eight quadrant staircase structure which depends on the phase rotation angle of the incident light beam to control the phase delay is presented, thus realizing the code phase information. The distribution of the spiral spectrum that the incident beam passes through different quadrant staircase structures, and detects the spiral spectrum by the array power detector corresponding to the particular coding quadrant staircase structure, distinguishes different data states and finally achieves the decode of the phase information. Each memory cell can theoretically encode 24 bits data, which is three times the four quadrant staircase structure.

By employing a classical hash function and random numbers, an arbitrated quantum signature with single particle was put forward. One merit of the presented protocol is that the secret keys of signer and receiver can be reused. Since the receiver does not perform a further verification after the arbitrator verifies the validity of a signature, the scheme can stand against the disavowal attack. And it transmits less quantum bits. The security of the protocol was discussed briefly. It was shown that this protocol can effectively defense the assault of initiative or passiveness.

In order to improve the efficiency of deterministic key distribution, a quantum key distribution scheme based on GHZ states entanglement swapping was proposed. By sharing a pair of GHZ states between communicators, Bob can deduce deterministic key from classic information which was sent by Alice who took entanglement and measurement operation. Compared with other scheme based on GHZ entanglement state, two GHZ states produced by Bob in the proposed scheme and particles are distributed not by Alice, but Bob. Security analysis results show that any eavesdropper can be found in time. The proposed scheme has high distribution efficiency in that all the GHZ states can be used to transmit information except those chosen for checking eavesdroppers, it can reach the distribution efficiency at 60% and simple to operation.

Some laser experimental parameters in infrared nonlinear optical crystal GaSe were calculated, including the illustration of phase matching angle, the varying of effective nonlinear coefficient, allowing angle, walk-off angle and Sellmeier curve for type I and II phase-matching. All the results were calculated in the optical parametric oscillation (OPO) and second harmonic generation (SHG). Also, the results were analysed so that they can provide useful theoretical references for optical design of infrared tunable and new wavelength laser devices.

Using the linear approximation method, the intensity fluctuation of the optical bistable system driven by both the colored pump noise and colored quantum noise with cross-correlation was calculated, and the influence of intensity of noise and its cross-correlation form on intensity fluctuation was discussed. It’s found that there is a minimum of the intensity fluctuation when the intensity of the pump noise and the quantum noise change, and it is closely related to the cross-correlation of the noises, but the input signal has little effect on the intensity fluctuation.

High-resolution imaging avian is quite significant for aviation security. Aimed at improving the lower resolution of the existed radar, an idea about avian detected and imaged by using inverse synthetic aperture imaging lidar (ISAIL) was proposed. The principle sketch of the avian ISAIL system was given, and a new sparse synthesizing method based on compressed sensing (CS) was proposed. By using the proposed method, the exact high-resolution cross-range profile can be achieved with the incomplete effect data. This method is robust. The effectiveness of the proposed method can be validated by simulation results.

The thermal constants and thermal transport properties of the Ga doped wurtzite type ZnO were investigated by ab-initial calculations based on the density functional theory as well as the linear response density perturbation functional theory. The results show that the Ga doped wurtzite type ZnO has increased lattice. The lattice heat capacity increases with increasing temperature for both systems, and the heat capacities reach 16.5 Cal.mol-1K-1 and 31.3 Cal.mol-1K-1 for the pure ZnO and the Ga doped ZnO at 900 K, respectively. The Debye temperature increases with increasing temperature for both systems. There are new vibrational modes that is introduced by Ga doping.

A new class of codes was designed for the synchronous spectral-amplitude coding optical code division multiple access (SAC OCDMA) system which the bit error rate (BER) caused by multiple access interference equals 0 and the value of cross-correlation equals 1. When the code weight and number of users were given, the designed codes with shorter code length would be more convenient for the coder. Using OptiSys 7.0 to simulate, the wavelength division multiplexer (WDM) with the fiber Bragger grating (FBG) was analyzed and compared as the codecs in different systems. The signal to noise ratio and bit error rate would be analyzed according to the design of the codes in the consideration of the shot noise, phase induced intensity noise (PIIN) and thermal noise, and would be compared with the existing SAC codes. The result shows that the SAC OCDMA system based on the designed codes has a clearer eye diagram. The performance of bit error rate, codec implementation and system performance was greatly improved.

An improved signal demodulated method of phase-sensitive optical time domain reflectometer (OTDR) system was proposed. The principle of the method was illustrated theoretically. The effect of the values of key parameters (average time, moving window, substracting interval) on the result of signal processing of the phase-sensitive OTDR system was analyzed and selection of these key parameters was summarized. Compared with the conventional digital average method, the disturbance signal was effectively demodulated with the method, which illustrated the feasibility of the method further. The result shows that the method increases the correlation of each group data with dividing original data into groups as the fluctuation characteristics of signals, thus improving the SNR of system obviously. This method can extend the performance of long distance phase-sensitive OTDR to some extent.