Results in Optics最新文献_第7页

Bayer-filtered image compression based on CCSDS-123 standard: A tailored approach for CubeSats 基于 CCSDS-123 标准的贝叶滤波图像压缩：为立方体卫星量身定制的方法

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100729

El habib BENSIKADDOUR, Youcef BENTOUTOU

引用次数: 0

Azimuthal Fourier decomposition for loss analysis of hollow-core tube lattice fibers, Part II: Tube thickness variation effects 用于空芯管状晶格光纤损耗分析的方位傅立叶分解法第二部分：管厚度变化效应

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100726

Federico Melli , Fabio Giovanardi , Kostiantyn Vasko , Lorenzo Rosa , Fetah Benabid , Luca Vincetti

{"title":"Azimuthal Fourier decomposition for loss analysis of hollow-core tube lattice fibers, Part II: Tube thickness variation effects","authors":"Federico Melli , Fabio Giovanardi , Kostiantyn Vasko , Lorenzo Rosa , Fetah Benabid , Luca Vincetti","doi":"10.1016/j.rio.2024.100726","DOIUrl":"10.1016/j.rio.2024.100726","url":null,"abstract":"<div><p>The effect on confinement loss of thickness variations along the perimeter of the tubes composing the cladding of inhibited-coupling guiding Tube Lattice hollow-core fibers is investigated by using the Azimuthal Fourier Decomposition technique (developed in Part I) for the description of the cladding modal dynamics and their interaction with the fundamental core mode. The results show that the thickness inhomogeneity affects the confinement loss spectrum through confinement loss increase and frequency red- and blue-shift of the high-loss spectral regions. The magnitudes of the confinement loss increase and the high-loss region frequency shift strongly depend on the spatial distribution of the thickness inhomogeneity. The study provides insight into the loss mechanism of non-ideal tube lattice fibers, it allows to quantify the impact of such kind of structural deformations, identifying the route to make fibers more resilient to such fabrication imperfections, and highlighting once again the importance played in inhibited-coupling fibers by the interaction between core modes and the intricate set of cladding modes.</p></div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"16 ","pages":"Article 100726"},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124001238/pdfft?md5=72d2211cf7186bdc249f762f67096d84&pid=1-s2.0-S2666950124001238-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141849611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Monocrystalline photovoltaic material based symmetrical and unsymmetrical Triple-Series Parallel-Ladder configuration for harvesting maximum power under partial shading conditions 基于单晶光伏材料的对称和非对称三串并联阶梯配置，可在部分遮光条件下获取最大功率

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100682

{"title":"Monocrystalline photovoltaic material based symmetrical and unsymmetrical Triple-Series Parallel-Ladder configuration for harvesting maximum power under partial shading conditions","authors":"","doi":"10.1016/j.rio.2024.100682","DOIUrl":"10.1016/j.rio.2024.100682","url":null,"abstract":"<div><p>In recent years, renewable energy has made significant strides in energy markets, with solar energy emerging as a key player, as evidenced by the proliferation of photovoltaic (PV) array installations. However, challenges arise when these arrays operate under partial shading conditions (PSC), leading to disparities in array irradiance and decreased power output. Addressing this issue requires careful selection of PV materials and configurations. This study introduces a new Triple-Series Parallel-Ladder Configuration (T-SP-L) utilizing monocrystalline material PV to optimize output power under PSC. To assess its efficacy, symmetrical and unsymmetrical PV arrays is analyzed and compared with alternative configurations such as Total-Cross-Tied (T-C-T), Bridge-Link (B-L), Honey-Comb (H-C), and Series-Parallel (S-P), across various shading scenarios including Long-Narrow (L-N), Long-Wide (L-W), Short-Narrow (S-N), Short-Wide (S-W), and Middle (M).</p></div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"16 ","pages":"Article 100682"},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124000798/pdfft?md5=732776142b04002f102194b58d0075d9&pid=1-s2.0-S2666950124000798-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140760886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Near-infrared spectroscopy for glucose detection in aqueous solution 用于检测水溶液中葡萄糖的近红外光谱技术

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100738

Hussein Attia , Yaqub Mahnashi , Ammar Qaid , Nadir E. Mohamed , Khurram K. Qureshi

引用次数: 0

Diabetic retinopathy detection through generative AI techniques: A review 通过生成式人工智能技术检测糖尿病视网膜病变：综述

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100700

Vipin Bansal , Amit Jain , Navpreet Kaur Walia

{"title":"Diabetic retinopathy detection through generative AI techniques: A review","authors":"Vipin Bansal , Amit Jain , Navpreet Kaur Walia","doi":"10.1016/j.rio.2024.100700","DOIUrl":"10.1016/j.rio.2024.100700","url":null,"abstract":"<div><p>Diabetes, a burgeoning health issue, especially among the youth, stems from poor dietary habits and unhealthy lifestyles. India stands as the second most afflicted country, witnessing a rapid diabetes epidemic. Diabetic Retinopathy (DR), a significant complication, threatens vision loss and blindness. Early detection, alongside lifestyle adjustments, can manage DR effectively. Traditional methods for DR detection are time consuming, costly and require specialized skills. Computer assisted screening systems, leveraging technologies like Fundus images and Optical Coherence Tomography (OCT), streamline DR detection, with Artificial Intelligence (AI) playing a pivotal role. Technological advancements and abundant data fuel significant progress in AI-based DR screening, promising enhanced accuracy and efficiency, even in remote regions. In healthcare, “normal” and “abnormal” statuses characterize patient health. AI applications in healthcare often focus on anomaly detection, leveraging distinct data distributions. Generative architectures, originally designed for content generation, find application across various domains, including healthcare. By adjusting architecture and data pipelines, controlled and specific samples can be generated, offering solutions for anomaly detection.</p><p>This paper reviews fundamental aspects of diabetes and DR, exploring the utilization of generative AI in analyzing retinal data for DR detection. It also discusses recent advancements in Generative AI and their potential to enhance AI solutions in healthcare.</p></div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"16 ","pages":"Article 100700"},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266695012400097X/pdfft?md5=e29a14978ae4a4f94ae979f6740de3a5&pid=1-s2.0-S266695012400097X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141390835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of annealing and roughness on the magnetic-optical, adhesive, nano-mechanical, and electrical properties of Co60Fe20Dy20 films 退火和粗糙度对 Co60Fe20Dy20 薄膜的磁光、粘合、纳米机械和电气性能的影响

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100636

{"title":"Effect of annealing and roughness on the magnetic-optical, adhesive, nano-mechanical, and electrical properties of Co60Fe20Dy20 films","authors":"","doi":"10.1016/j.rio.2024.100636","DOIUrl":"10.1016/j.rio.2024.100636","url":null,"abstract":"<div><p>The structural, magnetic, optical, and adhesion properties of Cobalt-Iron-Dysprosium (CoFeDy) films were investigated in this study. Glass substrates were coated with a Co<sub>60</sub>Fe<sub>20</sub>Dy<sub>20</sub> alloy via sputtering, with a thickness ranging from 10 nm to 50 nm. Subsequently, the films underwent annealing at temperatures of 100 °C, 200 °C, and 300 °C for one hour. X-ray diffraction (XRD) analysis confirmed the amorphous nature of the deposited CoFeDy films under four distinct conditions. Notably, a thickness-dependent increase in low-frequency alternate-current magnetic susceptibility (χ<sub>ac</sub>) was observed. After annealing at 300 °C, CoFeDy films exhibited the highest χ<sub>ac</sub> compared to other temperatures. Surface roughness exhibited a decreasing trend with rising annealing temperature, as observed through atomic force microscopy (AFM) experiments. The maximum surface energy of CoFeDy films was achieved at a thickness of 50 nm following annealing at 300 °C. Higher surface energy was indicative of stronger adhesion efficiency. Furthermore, lower resistance and sheet resistance values were obtained through annealing at higher temperatures, suggesting that increasing thickness and reducing electron transport barriers enhanced electron conductivity. As film thickness increased, transmittance decreased due to the thickness effect, suppressing the photon signal. Consequently, rougher surfaces were associated with improved performance in magnetism, electrical adhesion, and optics, attributed to reduced domain pinning, enhanced carrier conductivity, and minimized light scattering.</p></div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"16 ","pages":"Article 100636"},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124000336/pdfft?md5=225a024663efb8220da2f3469975d496&pid=1-s2.0-S2666950124000336-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139875179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The impact of lithium concentration on the optical properties of colloidal ZnO nanocrystals 锂浓度对胶体氧化锌纳米晶体光学特性的影响

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100733

M.A. Aberoumand , M. Sasani Ghamsari , M.H. Majles Ara

引用次数: 0

Structural, morphological, electrochemical and optical properties ZnS quantum dots: Influence of La3+ ions ZnS 量子点的结构、形态、电化学和光学特性：La3+ 离子的影响

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100727

A. Sudha , I. Manimehan , P. Sakthivel

引用次数: 0

Detecting white interference fringes in noisy conditions via supervised learning neural networks 通过监督学习神经网络检测噪声条件下的白色干涉条纹

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100725

Naru Hasegawa, Taketo Miura, Dong Wei

{"title":"Detecting white interference fringes in noisy conditions via supervised learning neural networks","authors":"Naru Hasegawa, Taketo Miura, Dong Wei","doi":"10.1016/j.rio.2024.100725","DOIUrl":"10.1016/j.rio.2024.100725","url":null,"abstract":"<div><p>White interferograms are signals recorded using the interference of light with positional information obtained using a white interferometer, which is a laser technology that uses light interference for the non-contact measurement of the surface topography of a sample. In long-range measurements, the reflected light weakens with increasing distance. When the peak-to-peak value of interference fringe signals is less than the noise level interference fringes cannot be visually confirmed. We propose a neural network-based supervised learning method to detect white interference fringes in noisy conditions. The interference fringes obtained were transformed into time series signals and stored as images. Some of the data was used to train the neural network. Some data was used to validate the trained neural network. The trained model could distinguish between the presence and absence of white interference fringes in noise-contaminated conditions with a certain probability. Numerical calculations and optical experiments validated the proposed method. This technique can be applied to detect weak reflections and extend the interferometry measurement range.</p></div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"16 ","pages":"Article 100725"},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124001226/pdfft?md5=33e4d06ab31d8122529dfe0c1b0d930a&pid=1-s2.0-S2666950124001226-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141844002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Revisiting optical absorption power density of inhomogeneous plane waves 重温非均质平面波的光吸收功率密度

Results in Optics Pub Date : 2024-07-01 DOI: 10.1016/j.rio.2024.100728

Aurelien Bruyant , Kuan-Ting Wu , Sylvain Blaize

{"title":"Revisiting optical absorption power density of inhomogeneous plane waves","authors":"Aurelien Bruyant , Kuan-Ting Wu , Sylvain Blaize","doi":"10.1016/j.rio.2024.100728","DOIUrl":"10.1016/j.rio.2024.100728","url":null,"abstract":"<div><p>We review the analytical expressions for the complex Poynting’s vector in the case of arbitrary plane-waves in a lossy isotropic medium. We demonstrate how these expressions can be used to recover the optical absorption power density <span><math><mi>Q</mi></math></span>, considering the divergence of the time-averaged Poynting vector. This quantity, proportional to the imaginary part of the dielectric function and the field intensity, i.e. <span><math><mrow><mi>Q</mi><mo>∝</mo><msup><mrow><mrow><mo>|</mo><mi>E</mi><mo>|</mo></mrow></mrow><mrow><mn>2</mn></mrow></msup><mi>ɛ</mi></mrow></math></span>”, is usually established for harmonic fields, using the Poynting’s identity. The derivation from the complex Poynting vector expression is more direct for TE-polarized homogeneous waves, but the derivation encompasses the other cases like inhomogeneous TM plane waves. As an application, the optical absorption profile <span><math><mrow><mi>Q</mi><mrow><mo>(</mo><mi>x</mi><mo>)</mo></mrow></mrow></math></span> within 1D multilayers is detailed using matrix transfer method for both TE and TM plane waves, including the evanescent case.</p></div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"16 ","pages":"Article 100728"},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124001251/pdfft?md5=e01ff260595dacac0fa279a806ecdc8f&pid=1-s2.0-S2666950124001251-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141954167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0