International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference最新文献_第7页

Reconstructing targets based on the enhancement of speckle patterns with the hybrid input-output algorithm 基于散斑模式增强的混合输入输出算法重建目标

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586639

Qianqian Cheng, Enlai Guo, Qianying Cui, Jing Han, Lianfa Bai

引用次数: 0

Estimating the blood glucose of serum optical spectrum using support vector regression 用支持向量回归估计血清光谱中的血糖

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586384

Dongming Li

引用次数: 0

Optical system design of polarization imaging spectrometer based on aperture division 基于孔径划分的偏振成像光谱仪光学系统设计

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586810

Ling-ying Chang, Q. Pan, Yuehong Qiu, Baochang Zhao

引用次数: 0

Refractometric optical sensors with optoelectronic interrogation 带有光电询问的折射光学传感器

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586637

M. Elshorbagy, A. Cuadrado, J. Alda

引用次数: 1

Research on process of optical elements coating planar layer 光学元件平面镀膜工艺研究

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2581905

N. Pei, Dasen Wang, F. Nie, Xiaojing Li, H. Guo, Xu Zhang, Chaoxiang Xia

引用次数: 0

An optimized depth-resolved dispersion compensation method in optical coherent tomography signal processing 光学相干层析成像信号处理中一种优化的深度分辨色散补偿方法

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586792

Xi Zhang, Zhongliang Li, Nan Nan, Xiang-zhao Wang

{"title":"An optimized depth-resolved dispersion compensation method in optical coherent tomography signal processing","authors":"Xi Zhang, Zhongliang Li, Nan Nan, Xiang-zhao Wang","doi":"10.1117/12.2586792","DOIUrl":"https://doi.org/10.1117/12.2586792","url":null,"abstract":"An optimized depth-resolved dispersion compensation method for achieving better dispersion compensation effect is presented in optical coherence tomography signal processing. When performing depth-resolved dispersion compensation, it is necessary to use a rectangular window function to intercept the interference signals at different depths of the sample from the A-line signal before FFT. Windowed FFT will cause errors in phase extraction, which will lead to inaccurate dispersion coefficient. Herein, the rectangular window function needs to be optimized. The phase is extracted after FFT of the interference signal obtained by the primary rectangular window. According to the functional relationship between the phase and the wave number in the presence of dispersion, the obtained phase is fitted to the quadratic polynomial by the least square method, and the standard error of the fitted quadratic polynomial is used as the criterion. Constantly changed the width and center position of the rectangular window to obtain the smallest standard error. The smallest standard error corresponds to the optimized rectangular window, which is used to intercept the signal and perform FFT to obtain a phase close to the true value. Therefore, the dispersion compensation coefficients of the OCT system at different depths are accurately extracted. It is verified by simulation and experiment that this method can achieve better dispersion compensation effect.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124629199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pixel super resolution imaging method based on coded aperture modulation 基于编码孔径调制的像素超分辨率成像方法

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586429

Bowen Wang, Yan Zou, C. Zuo, Jiasong Sun, Yan Hu

{"title":"Pixel super resolution imaging method based on coded aperture modulation","authors":"Bowen Wang, Yan Zou, C. Zuo, Jiasong Sun, Yan Hu","doi":"10.1117/12.2586429","DOIUrl":"https://doi.org/10.1117/12.2586429","url":null,"abstract":"In recent years, the development of computational imaging technology provides a new method for the realization of non-scanning super-resolution imaging. In this paper, a pixel super-resolution algorithm based on Fourier ptychographic technology is proposed, and the corresponding integrated and systematic programmable aperture coded super-resolution imaging system is constructed. By modulating the intensity with the coded aperture mask, utilizing different system point spread functions to obtain multiple samples of the original scene, and finally adopting sparse optimization iterative algorithm to reconstruct the original image, the result of super- resolution imaging is more than 3.5 times of Nyquist sampling frequency. In this tutorial, the proposed new super-resolution photoelectric imaging technology innovatively adopts the approach of coded aperture to realize image super-resolution imaging and effectively solve image pixelation. High-resolution images beyond the spatial resolution of the detector are obtained without any physical moving device or scanning mechanism. Compared with the traditional micro-scanning technology, it not only improves the reliability and stability of the system but also greatly reduces the cost and volume weight of the system.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123405887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Numerical simulation of stimulated radiation on reacting flowfield in DF supersonic chemical laser 受激辐射对DF超音速化学激光器反应流场的数值模拟

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2585350

Y. Shao

{"title":"Numerical simulation of stimulated radiation on reacting flowfield in DF supersonic chemical laser","authors":"Y. Shao","doi":"10.1117/12.2585350","DOIUrl":"https://doi.org/10.1117/12.2585350","url":null,"abstract":"A DF chemical laser can transfer chemical energy into high-power laser beam in the megawatt range, which may be used for industrial manufacturing or military purposes. Reacting flowfield and optical field always interact in the process of optical energy extraction from the chemical laser cavity. On the one hand, nonuniform distribution of gain medium may affect the transmission of light beams, may lead to light deflection and phase deviation furtherly. On the other, power extraction may cause the variation of species and energy distribution in the flowfield. Therefore a numerical simulation is presented for investigating the interaction of chemical reaction flowfield and optical field. An 11-species (including DF molecules in various excited states of energies), 23-step chemistry model is adopted for the chemical reaction of the DF chemical laser system. Meanwhile, laser oscillating in the optical cavity is solved by geometric optical models. Variations of flow and optical fields from the establishment to the stabilization status in the optical cavity are simulated. Major results reveal that stimulated radiation has dominant effects only on the concentrations of the lasing species (DF excited molecules), and it has relatively minor influence on the basic fluid dynamic variables. For the case without lasing, the complete population inversion phenomena could be found in wider range, which does not occur for lasing. The lasing output is based on the partial population inversion of the vibration-rotation transition in DF molecules.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127586038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural impact localization method based on sensor array scanning 基于传感器阵列扫描的结构冲击定位方法

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586825

Qi Chang, Yao Meng, Lele Chen, Jun Liu

引用次数: 0

Design of polarization beam splitter with broadband and wide angle in near infrared 近红外波段宽带广角偏振分束器的设计

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2584850

Jie He, Junbo Yang, Dingbo Chen, W. Xie, Xinpeng Jiang

{"title":"Design of polarization beam splitter with broadband and wide angle in near infrared","authors":"Jie He, Junbo Yang, Dingbo Chen, W. Xie, Xinpeng Jiang","doi":"10.1117/12.2584850","DOIUrl":"https://doi.org/10.1117/12.2584850","url":null,"abstract":"Polarizing beam splitter is designed with a broadband and wide range of incident angle. Polarizing beam splitter designed here is a kind of double periodic subwavelength medium-metal grating, which consisted of silicon dioxide as the substrate, magnesium fluoride (MgF2) as medium material and silver for the grid lines. It has the polarization splitting function of TE reflection and TM transmission. Based on the rigorous coupled-wave analysis(RCWA) and the continuous optimization of the structure parameters, the polarization beam splitter has high polarization conversion efficiency, high extinction ratio and a wide tolerance of incident angle in the near infrared band (1μm − 3μm) .The simulation results show that the reflection efficiency of TE polarized light and the transmission efficiency of TM polarized light are both higher than 96%, and the reflection extinction ratio and transmission extinction ratio are greater than 17dB and 28dB respectively. When the incident angle of incident light is from -80° to 80°, the reflection efficiency of TE polarized light is over 96%; when the incident angle is from -40°to 40°, the transmission efficiency of TM polarized light is over 90%. The reflection extinction ratio exceeds 17dB, and the transmission extinction ratio exceeds 35dB in the incident wavelength of 1550nm.The designed polarizing beam splitter is expected to be used in optical communication, optical storage, optical sensing and other fields for light modulation and control.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125638008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0