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Security-enhanced chaotic communication system based on nonlinear double-phase-perturbation encryption 基于非线性双相位摄动加密的安全增强混沌通信系统
Photonics and Optoelectronics Meetings Pub Date : 2022-01-21 DOI: 10.1117/12.2626464
Qihua Li, Ziyang Ma, Qiongqiong Wu, Zhensen Gao
{"title":"Security-enhanced chaotic communication system based on nonlinear double-phase-perturbation encryption","authors":"Qihua Li, Ziyang Ma, Qiongqiong Wu, Zhensen Gao","doi":"10.1117/12.2626464","DOIUrl":"https://doi.org/10.1117/12.2626464","url":null,"abstract":"Optical chaotic communication as one of the encryption communication technologies has been get a great development in recent. However, various of hacking attacks from eavesdropper are threatening security of chaotic communication system. Therefore, we propose an novel system which combined with chaotic encryption module and phase perturbation module targeting to achieve a security-enhance chaotic communication system. Simulation result demonstrate the system provide a high-security transmitting performance with on a bit rate over Gb/s and satisfactory BER is achieved.","PeriodicalId":422113,"journal":{"name":"Photonics and Optoelectronics Meetings","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130433684","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
System construction and imaging experiment of a focused 300G terahertz FMCW systems 聚焦300G太赫兹FMCW系统构建及成像实验
Photonics and Optoelectronics Meetings Pub Date : 2022-01-21 DOI: 10.1117/12.2623733
Shitao Chen, Chengwu You, Kejia Wang, Jinsong Liu, Zhengang Yang
{"title":"System construction and imaging experiment of a focused 300G terahertz FMCW systems","authors":"Shitao Chen, Chengwu You, Kejia Wang, Jinsong Liu, Zhengang Yang","doi":"10.1117/12.2623733","DOIUrl":"https://doi.org/10.1117/12.2623733","url":null,"abstract":"We built a 300G terahertz (THz) frequency modulated continuous wave(FMCW) imaging system. This paper describes the construction and imaging experiment of a FMCW system with a sweep bandwidth of 275~325GHz. Quasi-optical module of the system can focus the spot radius of the system from 16.35 mm to 7.61 mm. The signal-to-noise ratio and resolution of the system were greatly improved. At the same time, the cage structure design of industrial application-grade lens group is implemented, which greatly increases its applicability. We conducted both one-sided and three-dimensional imaging experiments on the built imaging experimental system. The results show that the resolution of the designed imaging system can reach 3 mm, which is of tremendous value for the application of THz nondestructive testing.","PeriodicalId":422113,"journal":{"name":"Photonics and Optoelectronics Meetings","volume":"161 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115295949","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
Design of double-layer silicon nitride-based optical phased array 双层氮化硅基光学相控阵的设计
Photonics and Optoelectronics Meetings Pub Date : 2022-01-21 DOI: 10.1117/12.2622441
Chenyang Mei, Qiang Liu, Qingzhong Huang
{"title":"Design of double-layer silicon nitride-based optical phased array","authors":"Chenyang Mei, Qiang Liu, Qingzhong Huang","doi":"10.1117/12.2622441","DOIUrl":"https://doi.org/10.1117/12.2622441","url":null,"abstract":"We present a high-performance optical phased array on a double-layer Si3N4 platform, which takes the advantages of low macroscopic stress and low loss. We have performed both analytical and numerical simulations. In our design, the full width at half-maximum (FWHM) of the main lobe in transversal direction is 0.08°, while the FWHM in longitudinal direction is 0.09° due to the shallow etched grating antennas. The upward power is more than 50% in a broad wavelength range by optimizing the cladding thickness. The grating lobe suppression is reduced to 8.8 dB by using wide waveguide grating antennas. This optical phased array with high resolution and high efficiency will have a wide application in the fields of LIDAR and unmanned vehicles.","PeriodicalId":422113,"journal":{"name":"Photonics and Optoelectronics Meetings","volume":"12154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129106822","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: 2
Human identification by means of optoelectronic reservoir computing 利用光电储层计算进行人体识别
Photonics and Optoelectronics Meetings Pub Date : 2022-01-21 DOI: 10.1117/12.2625789
Kangpeng Ye, Chaoteng Lou, Xingmeng Suo, Yu-Juan Song, Xingxing Feng, O. Ozolins, X. Pang, Lu Zhang, Xianbin Yu
{"title":"Human identification by means of optoelectronic reservoir computing","authors":"Kangpeng Ye, Chaoteng Lou, Xingmeng Suo, Yu-Juan Song, Xingxing Feng, O. Ozolins, X. Pang, Lu Zhang, Xianbin Yu","doi":"10.1117/12.2625789","DOIUrl":"https://doi.org/10.1117/12.2625789","url":null,"abstract":"As an improvement of the traditional recurrent neural networks (RNN), the reservoir computing (RC) only needs to train one output connection weight matrix linearly, which greatly reduces the number of machine learning network calculations. The optoelectronic RC can be realized with a delay feedback loop composed of optical and electrical devices. It has the advantages of lower power consumption and faster speed than the all-electric RC scheme. At the same time, it is easier to be controlled than the all-optical RC scheme. In this paper, we propose to employ the optoelectronic RC to process radar signals to distinguish different persons in the indoor environment. The radar signal required for the simulation is referred from the IDRad data set, which contains the echo signals of the frequency modulated continuous wave (FMCW) radar, and five persons of different ages are free to move around in the room, which is close to the real scene. First, the echo signal is processed and the micro-Doppler features are extracted, and each frame corresponds to a row vector. Then, this vector is used as the input signal of the optoelectronic RC. We numerically studied the impact of parameters such as the size of the RC and the regularization coefficient in the system. Finally, the classification accuracy of five targets reaches 87%.","PeriodicalId":422113,"journal":{"name":"Photonics and Optoelectronics Meetings","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127621347","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
Linearization in the digital domain for photonic sampling analog-to-digital conversion 光子采样模数转换的数字域线性化
Photonics and Optoelectronics Meetings Pub Date : 2022-01-21 DOI: 10.1117/12.2626208
Weiqiang Lyu, Zhengkai Li, Zhenwei Fu, Shang-jian Zhang, Zhiyao Zhang, Heping Li, Yong Liu
{"title":"Linearization in the digital domain for photonic sampling analog-to-digital conversion","authors":"Weiqiang Lyu, Zhengkai Li, Zhenwei Fu, Shang-jian Zhang, Zhiyao Zhang, Heping Li, Yong Liu","doi":"10.1117/12.2626208","DOIUrl":"https://doi.org/10.1117/12.2626208","url":null,"abstract":"A linearization scheme in the digital domain for photonic sampling analog-to-digital converter (PS-ADC) is proposed and experimentally demonstrated, where a single-output Mach-Zehnder modulator (MZM) is used for photonic sampling instead of a dual-output MZM (DOMZM) in the traditional schemes. After frequency response calibration of the sampled signal in the digital domain, the optimal direct current (DC) component and the coefficient of sine function are found, and arcsine algorithm is performed to implement the linearization of PS-ADC. The theoretical results indicate that, compared with the differential and arcsine operation method generally employed in PS-ADC, the proposed scheme is facile to implement and decreases the system overhead. The feasibility of the scheme is verified by simulation and experiment. In the proof-of-concept experiment, for a single-tone microwave signal at 100 MHz with a modulation index of 0.45π, the second-order harmonic is suppressed below the noise floor, the third-order harmonic suppression ratio is enhanced by 17.14 dB, and the significant improvement in SINAD is equal to 7.91 dB.","PeriodicalId":422113,"journal":{"name":"Photonics and Optoelectronics Meetings","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132859925","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
The excess noise characteristics of InGaAs/InP APD in consideration of nonlinearity effect 考虑非线性效应的InGaAs/InP APD的过量噪声特性
Photonics and Optoelectronics Meetings Pub Date : 2022-01-21 DOI: 10.1117/12.2626413
Yang Tian, Zebiao Lin, Yanli Zhao
{"title":"The excess noise characteristics of InGaAs/InP APD in consideration of nonlinearity effect","authors":"Yang Tian, Zebiao Lin, Yanli Zhao","doi":"10.1117/12.2626413","DOIUrl":"https://doi.org/10.1117/12.2626413","url":null,"abstract":"In general, the excess noise of avalanche photodiodes (APDs) will increase with incident mean optical power (Pin). However, it is found that the excess noise of InGaAs/InP APD decreases rather than increases with Pin in the case of high gain. The experimental and simulated results reveal that this phenomenon can be attributed to the nonlinearity effects, which results in the degradation of gain of APDs. And the nonlinearity effect is more significant with larger gain. Consequently, the excess noise will decrease due to the decreases of gain. For free space optical (FSO) communication systems which commonly operates the APDs at high gain, this discovery can be used to determine the optimum threshold of receivers to achieve the minimum bit error rate (BER).","PeriodicalId":422113,"journal":{"name":"Photonics and Optoelectronics Meetings","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121162500","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
Surface modification of single-crystal silicon by hybrid laser treatment 混合激光处理单晶硅的表面改性
Photonics and Optoelectronics Meetings Pub Date : 2022-01-21 DOI: 10.1117/12.2626902
Xinxin Li, Zhi-Yong Cui, Y. Guan
{"title":"Surface modification of single-crystal silicon by hybrid laser treatment","authors":"Xinxin Li, Zhi-Yong Cui, Y. Guan","doi":"10.1117/12.2626902","DOIUrl":"https://doi.org/10.1117/12.2626902","url":null,"abstract":"In this paper, recent work on picosecond and nanosecond hybrid laser treatment of mechanically sawed single-crystal silicon wafer is presented. Surface morphology, surface roughness and phase development has been analyzed by 3D laser scanning confocal microscope (LSCM), X-ray diffraction (XRD), and scanning electron microscope (SEM). Results show that as-received surface defects including SiO2 layer and saw-mark defects have been significantly reduced, while average surface roughness has been decreased. No obvious damages such as micro-cracks and micropores have been observed at the laser-treated surface. Moreover, residual stress and electrical resistivity of laser-treated surface has been measured, respectively. The insights obtained in this work provide a facile method to improve surface quality of mechanically machined silicon wafer.","PeriodicalId":422113,"journal":{"name":"Photonics and Optoelectronics Meetings","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123881354","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
Aluminum scandium nitride waveguide in the near-infrared 氮化铝钪波导的近红外特性
Photonics and Optoelectronics Meetings Pub Date : 2022-01-21 DOI: 10.1117/12.2626712
Xiangchao Zhang, Shaonan Zheng, Qize Zhong, L. Jia, Zhengji Xu, Yuan Dong, Ting Hu, Y. Gu
{"title":"Aluminum scandium nitride waveguide in the near-infrared","authors":"Xiangchao Zhang, Shaonan Zheng, Qize Zhong, L. Jia, Zhengji Xu, Yuan Dong, Ting Hu, Y. Gu","doi":"10.1117/12.2626712","DOIUrl":"https://doi.org/10.1117/12.2626712","url":null,"abstract":"Aluminum scandium nitride (Al1-xScxN) optical waveguides with various geometric parameters and scandium (Sc) concentrations (x = 0, 0.09, 0.17, 0.32, 0.41) are investigated by numerical simulation. The waveguides are designed to operate at three near-infrared wavelengths of 940, 1550, and 2000 nm. The effective refractive indices and electric-field intensity of various optical modes for channel and rib waveguides are obtained. In addition, the impact of waveguide width as well as the slab thickness on the single-mode condition of the (Al1-xScxN) waveguides are presented.","PeriodicalId":422113,"journal":{"name":"Photonics and Optoelectronics Meetings","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129684913","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: 3
High-speed secure key distribution based on chaos synchronization and optical frequency comb technology 基于混沌同步和光频梳技术的高速安全密钥分发
Photonics and Optoelectronics Meetings Pub Date : 2022-01-21 DOI: 10.1117/12.2626402
Ziyang Ma, Qihua Li, Qiongqiong Wu, Zhensen Gao
{"title":"High-speed secure key distribution based on chaos synchronization and optical frequency comb technology","authors":"Ziyang Ma, Qihua Li, Qiongqiong Wu, Zhensen Gao","doi":"10.1117/12.2626402","DOIUrl":"https://doi.org/10.1117/12.2626402","url":null,"abstract":"Secure key distribution is one of the most crucial issues for the security of communication systems. However, it is extremely challenging to realize the gigabit key distribution required for high-speed secure communication. Targeting high-speed secure key distribution, we propose a novel scheme based on chaos synchronization and optical frequency comb technology. By the multi-channel multiplexing, final security key rate is greatly extended to gigabit. The feasibility and performance of the proposed high-speed secure key distribution scheme are verified by numerical simulations.","PeriodicalId":422113,"journal":{"name":"Photonics and Optoelectronics Meetings","volume":"40 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114018364","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
Terahertz spectral study of L- and DL-fudosteine L-和dl -福多斯坦的太赫兹光谱研究
Photonics and Optoelectronics Meetings Pub Date : 2012-03-14 DOI: 10.1117/12.918852
Jinglong He, Rongjiao Zhao, Jing Li, Yong Du, Zhi Hong
{"title":"Terahertz spectral study of L- and DL-fudosteine","authors":"Jinglong He, Rongjiao Zhao, Jing Li, Yong Du, Zhi Hong","doi":"10.1117/12.918852","DOIUrl":"https://doi.org/10.1117/12.918852","url":null,"abstract":"We have studied the absorption spectral of L-and DL-fudosteine using terahertz time-domain spectroscopy (THz-TDS) at room temperature. The results show that both of them have unique absorption fingerprint peaks in terahertz range and can be identified by these peaks. The absorption spectrum of the fudosteine capsule has also been studied. Its absorption spectrum is similar to that of L-fudosteine. Thus, it proves that the main component of fudosteine capsule is L-fudosteine. The study indicates that THz-TDS technology is a new method to identify and analyze main components of material.","PeriodicalId":422113,"journal":{"name":"Photonics and Optoelectronics Meetings","volume":"643 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121331701","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
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