首页 > 最新文献

Optica Applicata最新文献

英文 中文
Optical trapping forces of focused circular partially coherent beams on Rayleigh particles 聚焦圆形部分相干光束对瑞利粒子的光俘获力
IF 0.6 4区 物理与天体物理 Q4 OPTICS Pub Date : 2022-01-01 DOI: 10.37190/oa220408
Chaoqun Yu, Fuchang Chen, Jun Zeng, Cheng Huang, Zhimin He, Huichuan Lin, Yongtao Zhang, Ziyang Chen, Jixiong Pu
The optical trapping forces of tightly-focused radially polarized circular partially coherent beams on Rayleigh particles are theoretically investigated. Numerical calculations are performed to study the optical trapping forces on Rayleigh particles for different initial coherent length of the incident circular partially coherent beams. The results show that the magnitude of the gradient force decreases with the reduction of the initial coherent length of the focused radially polarized circular partially coherent beams, while the balanced position (i.e., the position where the optical trapping forces becomes zero) stays constant. Moreover, the focused spot gradually elongates along the optical axis with the reduction of the initial coherent length, and the axial gradient force on Rayleigh particles also decreases gradually with the reduction of the intensity gradient in axial direction. As there exists an spherical aberrant in the focusing optical system, the focal spot in the direction of the optical axis becomes trumpet-shaped, and the optical trapping forces on Rayleigh particles change as well.
从理论上研究了紧聚焦径向偏振圆形部分相干光束对瑞利粒子的光俘获力。通过数值计算研究了不同初始相干长度入射圆形部分相干光束对瑞利粒子的光俘获力。结果表明,梯度力的大小随着聚焦径向偏振圆部分相干光束初始相干长度的减小而减小,而平衡位置(即光捕获力变为零的位置)保持不变。随着初始相干长度的减小,聚焦光斑沿光轴方向逐渐拉长,作用在瑞利粒子上的轴向梯度力也随着轴向强度梯度的减小而逐渐减小。由于聚焦光学系统中存在球差,使得光轴方向的焦斑呈喇叭状,瑞利粒子的光捕获力也发生了变化。
{"title":"Optical trapping forces of focused circular partially coherent beams on Rayleigh particles","authors":"Chaoqun Yu, Fuchang Chen, Jun Zeng, Cheng Huang, Zhimin He, Huichuan Lin, Yongtao Zhang, Ziyang Chen, Jixiong Pu","doi":"10.37190/oa220408","DOIUrl":"https://doi.org/10.37190/oa220408","url":null,"abstract":"The optical trapping forces of tightly-focused radially polarized circular partially coherent beams on Rayleigh particles are theoretically investigated. Numerical calculations are performed to study the optical trapping forces on Rayleigh particles for different initial coherent length of the incident circular partially coherent beams. The results show that the magnitude of the gradient force decreases with the reduction of the initial coherent length of the focused radially polarized circular partially coherent beams, while the balanced position (i.e., the position where the optical trapping forces becomes zero) stays constant. Moreover, the focused spot gradually elongates along the optical axis with the reduction of the initial coherent length, and the axial gradient force on Rayleigh particles also decreases gradually with the reduction of the intensity gradient in axial direction. As there exists an spherical aberrant in the focusing optical system, the focal spot in the direction of the optical axis becomes trumpet-shaped, and the optical trapping forces on Rayleigh particles change as well.","PeriodicalId":19589,"journal":{"name":"Optica Applicata","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70017354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Numerical analysis of slow and fast light effect in semiconductor optical amplifier with certain facet reflection 具有一定面反射的半导体光放大器中快慢光效应的数值分析
IF 0.6 4区 物理与天体物理 Q4 OPTICS Pub Date : 2022-01-01 DOI: 10.37190/oa220414
Cui Qin, Yu Jiang, Li Zhen
In this paper, the slow and fast light (SFL) effects of the semiconductor optical amplifier (SOA) having certain facet reflections are theoretically investigated. The theoretical model is used to account for the SFL phenomenon causing the coherent population oscillation. The influence of the current modulation frequency, the value of the current, the linewidth enhancement factor, facet reflectivity as well as the relative phase of the modulated current on the phase delay in the SOA are studied. It is demonstrated that the SFL effect could be controlled by the modulation frequency, the value and relative phase of the current. Finally, it is shown that the magnitude of the SFL delay could be tuned by a change in the linewidth enhancement factor as well as the facet reflectivity of the SOA.
本文从理论上研究了具有一定面反射的半导体光放大器(SOA)的慢光和快光效应。用理论模型解释了引起相干居群振荡的SFL现象。研究了电流调制频率、电流值、线宽增强系数、面反射率以及调制电流的相对相位对SOA中相位延迟的影响。结果表明,SFL效应可以通过调制频率、电流值和相对相位来控制。最后,研究表明,SFL延迟的大小可以通过改变线宽增强因子以及SOA的面反射率来调整。
{"title":"Numerical analysis of slow and fast light effect in semiconductor optical amplifier with certain facet reflection","authors":"Cui Qin, Yu Jiang, Li Zhen","doi":"10.37190/oa220414","DOIUrl":"https://doi.org/10.37190/oa220414","url":null,"abstract":"In this paper, the slow and fast light (SFL) effects of the semiconductor optical amplifier (SOA) having certain facet reflections are theoretically investigated. The theoretical model is used to account for the SFL phenomenon causing the coherent population oscillation. The influence of the current modulation frequency, the value of the current, the linewidth enhancement factor, facet reflectivity as well as the relative phase of the modulated current on the phase delay in the SOA are studied. It is demonstrated that the SFL effect could be controlled by the modulation frequency, the value and relative phase of the current. Finally, it is shown that the magnitude of the SFL delay could be tuned by a change in the linewidth enhancement factor as well as the facet reflectivity of the SOA.","PeriodicalId":19589,"journal":{"name":"Optica Applicata","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70017669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Abruptly autofocusing property of circular Pearcey vortex beams with different initial launch angles in harmonic potentials 不同初始发射角圆皮尔斯涡旋光束在谐波势下的突然自聚焦特性
IF 0.6 4区 物理与天体物理 Q4 OPTICS Pub Date : 2022-01-01 DOI: 10.37190/oa220308
Xianglian Liu, Di Zhang, Lijiao Zhao, Pu Li, Jianguo Zhang, Yi Liu
We have studied and explored the influence of different launch angles on the circular Pearcey beams (CPBs) without vortex or with vortex for the first time. Although launch angles can manipulate the focal length and the contrast of peak intensity of the CPBs, the shape and propagation trajectory of the CPBs maintain invariant. When the vortex is considered, the focal pattern and the contrast of peak intensity of the circular Pearcey vortex beams (CPVBs) can be changed by adjusting the magnitude of topological charges and the position of vortex. In addition, we have deliberated the propagation of the CPVBs under the action of double opposite optical vortices.
本文首次研究和探讨了不同发射角度对无旋涡和有旋涡圆形皮尔斯光束的影响。虽然发射角度可以影响CPBs的焦距和峰值强度对比,但CPBs的形状和传播轨迹保持不变。考虑涡旋作用时,可以通过调整拓扑电荷的大小和涡旋的位置来改变圆形皮尔斯涡旋光束的焦点模式和峰值强度的对比。此外,我们还研究了在双对角光涡旋作用下CPVBs的传播。
{"title":"Abruptly autofocusing property of circular Pearcey vortex beams with different initial launch angles in harmonic potentials","authors":"Xianglian Liu, Di Zhang, Lijiao Zhao, Pu Li, Jianguo Zhang, Yi Liu","doi":"10.37190/oa220308","DOIUrl":"https://doi.org/10.37190/oa220308","url":null,"abstract":"We have studied and explored the influence of different launch angles on the circular Pearcey beams (CPBs) without vortex or with vortex for the first time. Although launch angles can manipulate the focal length and the contrast of peak intensity of the CPBs, the shape and propagation trajectory of the CPBs maintain invariant. When the vortex is considered, the focal pattern and the contrast of peak intensity of the circular Pearcey vortex beams (CPVBs) can be changed by adjusting the magnitude of topological charges and the position of vortex. In addition, we have deliberated the propagation of the CPVBs under the action of double opposite optical vortices.","PeriodicalId":19589,"journal":{"name":"Optica Applicata","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70016643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimization of optical uniformity factors of backlight module using robust design method 基于稳健设计方法的背光模组光学均匀性因素优化
IF 0.6 4区 物理与天体物理 Q4 OPTICS Pub Date : 2022-01-01 DOI: 10.37190/oa220101
Ju-Chi Wang, Yu-Cheng Fan, Te-Hua Fang, Anh-Son Tran, Yu-Ting Cheng
In order to meet the advent of the high-definition liquid crystal display (LCD) era, in addition to the high-quality panel manufacturing technology, how the backlight module can provide a uniform backlight with higher uniformity for a better experience in viewing, is a very important and urgent issue. In this study, the 15.6-inch side-in backlight module was used as the benchmark, and the Taguchi method was applied to find the high uniformity. The matching of the fishbone diagram affects the optical uniformity factor of the backlight module, such as the size of the light guide plate dot, the color of the plastic frame, the color of the fixed gel of the light guide plate, and the difference of the reflection surface. The optical analog software LightTools is used according to the orthogonal table. The signal-to-noise (S/N) ratio of the average uniformity characteristics is obtained, then it is converted into the best response factor of the factor response table and the factor reaction diagram. The homogeneity at 13 points is as high as 90.12%, which is 4.72% higher than the original design factor. The contribution of the four factors to the uniformity can be obtained by using the variance analysis. Finally, the influence of each factor level on the uniformity is discussed.
为了迎接高清液晶显示(LCD)时代的到来,除了高质量的面板制造技术外,背光模块如何能够提供更高均匀度的均匀背光,以获得更好的观看体验,是一个非常重要和迫切的问题。本研究以15.6英寸侧入式背光模组为基准,采用田口法寻找高均匀性。鱼骨图的匹配影响背光模块的光学均匀性系数,如导光板点的大小、塑料框架的颜色、导光板固定凝胶的颜色、反射面的差异等。根据正交表使用光学模拟软件LightTools。得到平均均匀性特性的信噪比(S/N),并将其转化为因子响应表和因子反应图的最佳响应因子。13点均匀性高达90.12%,比原设计系数提高4.72%。通过方差分析可以得到四个因素对均匀性的贡献。最后讨论了各因素水平对均匀性的影响。
{"title":"Optimization of optical uniformity factors of backlight module using robust design method","authors":"Ju-Chi Wang, Yu-Cheng Fan, Te-Hua Fang, Anh-Son Tran, Yu-Ting Cheng","doi":"10.37190/oa220101","DOIUrl":"https://doi.org/10.37190/oa220101","url":null,"abstract":"In order to meet the advent of the high-definition liquid crystal display (LCD) era, in addition to the high-quality panel manufacturing technology, how the backlight module can provide a uniform backlight with higher uniformity for a better experience in viewing, is a very important and urgent issue. In this study, the 15.6-inch side-in backlight module was used as the benchmark, and the Taguchi method was applied to find the high uniformity. The matching of the fishbone diagram affects the optical uniformity factor of the backlight module, such as the size of the light guide plate dot, the color of the plastic frame, the color of the fixed gel of the light guide plate, and the difference of the reflection surface. The optical analog software LightTools is used according to the orthogonal table. The signal-to-noise (S/N) ratio of the average uniformity characteristics is obtained, then it is converted into the best response factor of the factor response table and the factor reaction diagram. The homogeneity at 13 points is as high as 90.12%, which is 4.72% higher than the original design factor. The contribution of the four factors to the uniformity can be obtained by using the variance analysis. Finally, the influence of each factor level on the uniformity is discussed.","PeriodicalId":19589,"journal":{"name":"Optica Applicata","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70013979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Asymmetric double-image encryption using twin decomposition in fractional Hartley domain 基于分数阶Hartley域双分解的非对称双图像加密
IF 0.6 4区 物理与天体物理 Q4 OPTICS Pub Date : 2022-01-01 DOI: 10.37190/oa220102
J. Kumar, Phool Singh, Akash Yadav
Twin decomposition, consisting of equal and random modulus decompositions, not only makes a cryptosystem asymmetric but also resists special attack. A new double-image asymmetric cryptosystem using twin decomposition in fractional Hartley domain is proposed. An input grayscale image, bonded with another grayscale image as its phase mask, is transformed via fractional Hartley transform. Equal modulus decomposition is applied on the resulting image, giving us two intermediate images. One of them is subjected to another fractional Hartley transform followed by random modulus decomposition, whereas the other serves as the first private key. The application of random modulus decomposition also results in two images: encrypted image and the second private key. During the process of decryption, firstly the encrypted image is combined with second private key and thereafter it is subjected to inverse fractional Hartley transform. The resulting image is then combined with the first private key, and followed by another inverse fractional Hartley transform, thus recovering the two original images. The proposed cryptosystem is validated for pairs of grayscale images.
双分解由等模分解和随机模分解组成,不仅使密码系统具有非对称性,而且可以抵抗特殊攻击。利用分数阶Hartley域的孪生分解,提出了一种新的双象非对称密码系统。输入的灰度图像与另一灰度图像结合作为相位掩模,通过分数阶哈特利变换进行变换。对得到的图像进行等模分解,得到两个中间图像。其中一个进行分数阶Hartley变换,然后进行随机模分解,另一个作为第一私钥。随机模分解的应用也产生了两个图像:加密图像和第二个私钥。在解密过程中,首先将加密图像与第二私钥组合,然后对其进行分数阶逆哈特利变换。然后将得到的图像与第一个私钥组合,然后进行另一个逆分数哈特利变换,从而恢复两个原始图像。对灰度图像对所提出的密码系统进行了验证。
{"title":"Asymmetric double-image encryption using twin decomposition in fractional Hartley domain","authors":"J. Kumar, Phool Singh, Akash Yadav","doi":"10.37190/oa220102","DOIUrl":"https://doi.org/10.37190/oa220102","url":null,"abstract":"Twin decomposition, consisting of equal and random modulus decompositions, not only makes a cryptosystem asymmetric but also resists special attack. A new double-image asymmetric cryptosystem using twin decomposition in fractional Hartley domain is proposed. An input grayscale image, bonded with another grayscale image as its phase mask, is transformed via fractional Hartley transform. Equal modulus decomposition is applied on the resulting image, giving us two intermediate images. One of them is subjected to another fractional Hartley transform followed by random modulus decomposition, whereas the other serves as the first private key. The application of random modulus decomposition also results in two images: encrypted image and the second private key. During the process of decryption, firstly the encrypted image is combined with second private key and thereafter it is subjected to inverse fractional Hartley transform. The resulting image is then combined with the first private key, and followed by another inverse fractional Hartley transform, thus recovering the two original images. The proposed cryptosystem is validated for pairs of grayscale images.","PeriodicalId":19589,"journal":{"name":"Optica Applicata","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70013988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Dynamical system of optical soliton parameters for anti-cubic and generalized anti-cubic nonlinearities with super-Gaussian and super-sech pulses 具有超高斯脉冲和超sech脉冲的反三次和广义反三次非线性光孤子参数的动力系统
IF 0.6 4区 物理与天体物理 Q4 OPTICS Pub Date : 2022-01-01 DOI: 10.37190/oa220109
A. Ayela, Gaston Edah, A. Biswas, Qin Zhou, Y. Yıldırım, Salam Khan, A. K. Alzahrani, M. Belić
The parameter dynamics of solitons, propagating through optical fibers, is emerged from the usage of variational principle. The anti-cubic nonlinearity and its generalized version are studied. This study reveals that the center position does not affect the dynamics of different parameters and only soliton power and linear momentum are conserved quantities.
利用变分原理,得到了在光纤中传播的孤子的参数动力学。研究了反三次非线性及其广义形式。研究表明,中心位置不影响不同参数的动力学,只有孤子功率和线性动量是守恒量。
{"title":"Dynamical system of optical soliton parameters for anti-cubic and generalized anti-cubic nonlinearities with super-Gaussian and super-sech pulses","authors":"A. Ayela, Gaston Edah, A. Biswas, Qin Zhou, Y. Yıldırım, Salam Khan, A. K. Alzahrani, M. Belić","doi":"10.37190/oa220109","DOIUrl":"https://doi.org/10.37190/oa220109","url":null,"abstract":"The parameter dynamics of solitons, propagating through optical fibers, is emerged from the usage of variational principle. The anti-cubic nonlinearity and its generalized version are studied. This study reveals that the center position does not affect the dynamics of different parameters and only soliton power and linear momentum are conserved quantities.","PeriodicalId":19589,"journal":{"name":"Optica Applicata","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70014429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
An exact approach for radius of curvature measurement in a calibration test sphere 一种测量标定试验球曲率半径的精确方法
IF 0.6 4区 物理与天体物理 Q4 OPTICS Pub Date : 2022-01-01 DOI: 10.37190/oa220206
J. M. Jalife-Chavira, G. Trujillo-Schiaffino, P. G. Mendoza-Villegas, D. P. Salas-Peimbert, M. Anguiano-Morales, L. F. Corral-Martinez, Edgar Zendejas-Hernández
In this paper we present a technique to measure the radius of curvature of a test sphere based on the relation between acquired images of a circular cosine fringe pattern and size of virtual image formed on the calibration test surface. Radius of curvature is calculated with the exact equation proposed, using the parameters of the optical setup. Fringe pattern evaluation was performed by locating extrema indices. The mathematical formulation as well as the experimental setup and results are presented. After applying a linear fit algorithm to the data as a method of compensation, obtained results show an error within the tolerance established by the ISO 10343 specifications.
本文提出了一种基于获取的圆余弦条纹图像与标定测试表面上形成的虚像大小之间的关系来测量测试球体曲率半径的方法。利用光学装置的参数,用所提出的精确方程计算了曲率半径。通过定位极值指数对条纹模式进行评价。给出了数学公式、实验装置和实验结果。在对数据应用线性拟合算法作为补偿方法后,得到的结果显示误差在ISO 10343规范规定的公差范围内。
{"title":"An exact approach for radius of curvature measurement in a calibration test sphere","authors":"J. M. Jalife-Chavira, G. Trujillo-Schiaffino, P. G. Mendoza-Villegas, D. P. Salas-Peimbert, M. Anguiano-Morales, L. F. Corral-Martinez, Edgar Zendejas-Hernández","doi":"10.37190/oa220206","DOIUrl":"https://doi.org/10.37190/oa220206","url":null,"abstract":"In this paper we present a technique to measure the radius of curvature of a test sphere based on the relation between acquired images of a circular cosine fringe pattern and size of virtual image formed on the calibration test surface. Radius of curvature is calculated with the exact equation proposed, using the parameters of the optical setup. Fringe pattern evaluation was performed by locating extrema indices. The mathematical formulation as well as the experimental setup and results are presented. After applying a linear fit algorithm to the data as a method of compensation, obtained results show an error within the tolerance established by the ISO 10343 specifications.","PeriodicalId":19589,"journal":{"name":"Optica Applicata","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70014587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Compressed optical image encryption in the diffractive-imaging-based scheme by input plane and output plane random sampling 基于衍射成像的压缩光学图像加密方案采用输入平面和输出平面随机采样
IF 0.6 4区 物理与天体物理 Q4 OPTICS Pub Date : 2022-01-01 DOI: 10.37190/oa220104
Shujia Wan, Qiong Gong, Hongjuan Wang, Shibang Ma, Yi Qin
The successful recovery of the plaintext in the simplified diffractive-imaging-based encryption (S-DIBE) scheme needs to record one intact axial intensity map as the ciphertext. By aid of compressive sensing, we propose here a new image encryption approach, referred to as compressed DIBE (C-DIBE), which allows further compression of the intensity map. The plaintext is sampled before being sent to DIBE. Afterwards, the intensity map recorded by the CCD camera is also processed by such sampling operation to generate the ciphertext. For decryption, we first obtain the sparse plaintext using the proposed phase retrieval algorithm, and then reobtain the primary plaintext from it via compressive sensing. Numerical results show that a proper proportion of the intensity map (e.g. 50%) is enough to totally recover a grayscale image. We achieve multiple-image encryption by space multiplexing without enlarging the size of the ciphertext. The robustness of C-DIBE against brute-force attack evidently outperforms S-DIBE due to the extended key space. Numerical simulation has been presented to confirm the proposal.
在基于衍射成像的简化加密(S-DIBE)方案中,成功恢复明文需要记录一个完整的轴向强度图作为密文。在压缩感知的帮助下,我们提出了一种新的图像加密方法,称为压缩DIBE (C-DIBE),它允许进一步压缩强度图。明文在发送到DIBE之前被采样。然后,CCD摄像机记录的强度图也经过这样的采样操作,生成密文。对于解密,我们首先使用所提出的相位检索算法获得稀疏明文,然后通过压缩感知从中重新获得主明文。数值结果表明,适当的灰度图比例(如50%)足以完全恢复灰度图像。在不增大密文长度的情况下,通过空间复用实现了多图像加密。由于扩展了密钥空间,C-DIBE对暴力破解的鲁棒性明显优于S-DIBE。通过数值模拟验证了该方案。
{"title":"Compressed optical image encryption in the diffractive-imaging-based scheme by input plane and output plane random sampling","authors":"Shujia Wan, Qiong Gong, Hongjuan Wang, Shibang Ma, Yi Qin","doi":"10.37190/oa220104","DOIUrl":"https://doi.org/10.37190/oa220104","url":null,"abstract":"The successful recovery of the plaintext in the simplified diffractive-imaging-based encryption (S-DIBE) scheme needs to record one intact axial intensity map as the ciphertext. By aid of compressive sensing, we propose here a new image encryption approach, referred to as compressed DIBE (C-DIBE), which allows further compression of the intensity map. The plaintext is sampled before being sent to DIBE. Afterwards, the intensity map recorded by the CCD camera is also processed by such sampling operation to generate the ciphertext. For decryption, we first obtain the sparse plaintext using the proposed phase retrieval algorithm, and then reobtain the primary plaintext from it via compressive sensing. Numerical results show that a proper proportion of the intensity map (e.g. 50%) is enough to totally recover a grayscale image. We achieve multiple-image encryption by space multiplexing without enlarging the size of the ciphertext. The robustness of C-DIBE against brute-force attack evidently outperforms S-DIBE due to the extended key space. Numerical simulation has been presented to confirm the proposal.","PeriodicalId":19589,"journal":{"name":"Optica Applicata","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70014703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Visualization of pathologic changes in liver tissue via polarized light 肝组织病理变化的偏振光可视化
IF 0.6 4区 物理与天体物理 Q4 OPTICS Pub Date : 2022-01-01 DOI: 10.37190/oa220306
A. Stoilova, B. Blagoeva, D. Nazarova, E. Stoykova, N. Berberova-Buhova, L. Nedelchev, A. Machikhin
In this work, we applied two polarized light based approaches to visualize histological patterns of liver pathologies. The first one involves acquisition of two images through a polarizing microscope, one image (Ppar) acquired with the analyzer oriented parallel to the polarization of illumination and the other (Pper) acquired with the analyzer oriented perpendicular to the illumination. The final image is based on the polarization ratio, Preconstructed = (Ppar – Pper)/(Ppar + Pper). Using the second technique, the histological specimens were illuminated with a polarized laser beam with wavelength of 635 nm. Polarimetric parameters as azimuth, angle of ellipticity, degree of polarization and reflected power have been measured to quantify the change in the polarization state of the incident light after interaction with the sample of the healthy tissue and of the tissue with abnormal morphological changes.
在这项工作中,我们应用了两种基于偏振光的方法来可视化肝脏病理的组织学模式。第一种方法是通过偏光显微镜获取两幅图像,其中一幅图像(Ppar)是由平行于照明偏振方向的分析仪获得的,另一幅图像(Pper)是由垂直于照明方向的分析仪获得的。最终的图像是基于极化比,preconstruct = (Ppar - Pper)/(Ppar + Pper)。第二种方法是用波长为635 nm的偏振激光束照射组织学标本。测量了方位角、椭圆角、偏振度和反射功率等偏振参数,量化了入射光与健康组织和形态异常组织样品相互作用后偏振状态的变化。
{"title":"Visualization of pathologic changes in liver tissue via polarized light","authors":"A. Stoilova, B. Blagoeva, D. Nazarova, E. Stoykova, N. Berberova-Buhova, L. Nedelchev, A. Machikhin","doi":"10.37190/oa220306","DOIUrl":"https://doi.org/10.37190/oa220306","url":null,"abstract":"In this work, we applied two polarized light based approaches to visualize histological patterns of liver pathologies. The first one involves acquisition of two images through a polarizing microscope, one image (Ppar) acquired with the analyzer oriented parallel to the polarization of illumination and the other (Pper) acquired with the analyzer oriented perpendicular to the illumination. The final image is based on the polarization ratio, Preconstructed = (Ppar – Pper)/(Ppar + Pper). Using the second technique, the histological specimens were illuminated with a polarized laser beam with wavelength of 635 nm. Polarimetric parameters as azimuth, angle of ellipticity, degree of polarization and reflected power have been measured to quantify the change in the polarization state of the incident light after interaction with the sample of the healthy tissue and of the tissue with abnormal morphological changes.","PeriodicalId":19589,"journal":{"name":"Optica Applicata","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70015993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Utilization of telecommunication optical routes to power fiber-optic polarization sensors 通信光路在电力光纤偏振传感器中的应用
IF 0.6 4区 物理与天体物理 Q4 OPTICS Pub Date : 2022-01-01 DOI: 10.37190/oa220407
Zdeněk Vyležich, M. Kyselak
A single-mode telecommunication optical route can be used for reliable power supplies of a remote non-electric temperature fiber-optic polarization sensor, but the optical route, due to many physical factors, affects an immediate state of polarization during the transmission. This negative phenomenon changes the sensitivity of the sensor itself. The thesis proposes two main approaches to solving that problem. The first approach is based on the suitable connection of a depolarizer and linear polarizers. The second approach is based on signal interference, which takes place in a polarization-maintaining fiber coupler. This article also evaluates the advantages and disadvantages of the two approaches and graphically demonstrates the functionality of the fiber-optic sensor, which was tested by applying a container with water of different temperatures. A big advantage of this type of sensor is that it is not necessary to have components, that are dependent on electricity, near the monitored place, where there may be no access to electricity, or the place may be sensitive to an electric charge. Paper demonstrates the possibility of successfully powering the non-electric sensor via a classical optical route.
单模通信光路可以作为远程非电温度光纤偏振传感器的可靠电源,但由于许多物理因素,光路在传输过程中会影响直接的偏振状态。这种负现象改变了传感器本身的灵敏度。本文提出了解决这一问题的两种主要方法。第一种方法是基于去偏振器和线性偏振器的适当连接。第二种方法是基于信号干扰,它发生在保持偏振的光纤耦合器中。本文还评估了两种方法的优缺点,并以图形方式演示了光纤传感器的功能,并通过应用不同温度的水的容器进行了测试。这种类型的传感器的一个很大的优点是,它不需要有组件,依赖于电力,在被监测的地方附近,那里可能没有电力,或者这个地方可能对电荷敏感。本文论证了通过经典光路成功为非电传感器供电的可能性。
{"title":"Utilization of telecommunication optical routes to power fiber-optic polarization sensors","authors":"Zdeněk Vyležich, M. Kyselak","doi":"10.37190/oa220407","DOIUrl":"https://doi.org/10.37190/oa220407","url":null,"abstract":"A single-mode telecommunication optical route can be used for reliable power supplies of a remote non-electric temperature fiber-optic polarization sensor, but the optical route, due to many physical factors, affects an immediate state of polarization during the transmission. This negative phenomenon changes the sensitivity of the sensor itself. The thesis proposes two main approaches to solving that problem. The first approach is based on the suitable connection of a depolarizer and linear polarizers. The second approach is based on signal interference, which takes place in a polarization-maintaining fiber coupler. This article also evaluates the advantages and disadvantages of the two approaches and graphically demonstrates the functionality of the fiber-optic sensor, which was tested by applying a container with water of different temperatures. A big advantage of this type of sensor is that it is not necessary to have components, that are dependent on electricity, near the monitored place, where there may be no access to electricity, or the place may be sensitive to an electric charge. Paper demonstrates the possibility of successfully powering the non-electric sensor via a classical optical route.","PeriodicalId":19589,"journal":{"name":"Optica Applicata","volume":"57 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70017317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
期刊
Optica Applicata
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1