Optical Review最新文献_第9页

Computational imaging with randomness 随机性计算成像

IF 1.1 4区物理与天体物理

Optical Review Pub Date : 2024-04-30 DOI: 10.1007/s10043-024-00881-9

Ryoichi Horisaki

{"title":"Computational imaging with randomness","authors":"Ryoichi Horisaki","doi":"10.1007/s10043-024-00881-9","DOIUrl":"10.1007/s10043-024-00881-9","url":null,"abstract":"<div><p>Imaging is a longstanding research topic in optics and photonics and is an important tool for a wide range of scientific and engineering fields. Computational imaging is a powerful framework for designing innovative imaging systems by incorporating signal processing into optics. Conventional approaches involve individually designed optical and signal processing systems, which unnecessarily increased costs. Computational imaging, on the other hand, enhances the imaging performance of optical systems, visualizes invisible targets, and minimizes optical hardware. Digital holography and computer-generated holography are the roots of this field. Recent advances in information science, such as deep learning, and increasing computational power have rapidly driven computational imaging and have resulted in the reinvention these imaging technologies. In this paper, I survey recent research topics in computational imaging, where optical randomness is key. Imaging through scattering media, non-interferometric quantitative phase imaging, and real-time computer-generated holography are representative examples. These recent optical sensing and control technologies will serve as the foundations of next-generation imaging systems in various fields, such as biomedicine, security, and astronomy.</p></div>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"31 3","pages":"282 - 289"},"PeriodicalIF":1.1,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10043-024-00881-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140817674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dispersion-engineered metasurfaces for high-sensitivity color image sensors 用于高灵敏度彩色图像传感器的色散工程超表面

IF 1.1 4区物理与天体物理

Optical Review Pub Date : 2024-04-24 DOI: 10.1007/s10043-024-00882-8

Masashi Miyata

{"title":"Dispersion-engineered metasurfaces for high-sensitivity color image sensors","authors":"Masashi Miyata","doi":"10.1007/s10043-024-00882-8","DOIUrl":"10.1007/s10043-024-00882-8","url":null,"abstract":"<div><p>Increasing the sensitivity of image sensors is a major challenge for current imaging technology. Researchers are tackling it because highly sensitive sensors enable objects to be recognized even in dark environments, which is critical for today’s smartphones, wearable devices, and automobiles. Unfortunately, conventional image-sensor architectures use light-absorptive color filters on every pixel, which fundamentally limits the detected light power per pixel. Recent advances in optical metasurfaces have led to the creation of pixelated light-transmissive color splitters with the potential to enhance sensor sensitivity. These metasurfaces can be used instead of color filters to distinguish primary colors, and unlike color filters, they can direct almost all of the incident light to the photodetectors, thereby maximizing the detectable light power. This review focuses on such metasurface-based color splitters enabling high-sensitivity color-image sensors. Their underlying principles are introduced with a focus on dispersion engineering. Then, their capabilities as optical elements are assessed on the basis of our recent findings. Finally, it is discussed how they can be used to create high-sensitivity color-image sensors.</p></div>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"31 3","pages":"290 - 298"},"PeriodicalIF":1.1,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10043-024-00882-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140642124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reservoir computing for a MEMS mirror-based laser beam control on FPGA FPGA 上基于 MEMS 镜的激光束控制的存储计算

IF 1.2 4区物理与天体物理

Optical Review Pub Date : 2024-04-24 DOI: 10.1007/s10043-024-00871-x

Yuan Wang, Keisuke Uchida, Munenori Takumi, Katsuhiro Ishii, Ken-ichi Kitayama

{"title":"Reservoir computing for a MEMS mirror-based laser beam control on FPGA","authors":"Yuan Wang, Keisuke Uchida, Munenori Takumi, Katsuhiro Ishii, Ken-ichi Kitayama","doi":"10.1007/s10043-024-00871-x","DOIUrl":"https://doi.org/10.1007/s10043-024-00871-x","url":null,"abstract":"<p>In this paper, a small-world network-based reservoir computing (SWN-RC) is introduced to a micro-electromechanical system (MEMS) mirror-based laser scanner to achieve high-accuracy and low-delay laser trajectory control. The benefits of SWN-RC are confirmed through a comprehensive simulation, comparing it with reservoir computing (RC) based on regular and random networks. Subsequently, the RC control module is designed and implemented on a cost-optimized field-programmable gate array (FPGA). To balance the resource consumption and the processing delay, we use a half-parallel architecture for the large-scale matrix multiplications. In addition, the weight matrices of the RC are expressed by the 12-bit fixed-point data, which sufficiently suppresses the quantization noise. Furthermore, we simplify the activation function as a piecewise linear function and store the values in the read-only memory (ROM), resulting in a 76.6% reduction in ROM utilization. Finally, the SWN-RC, regular-RC, and random-RC control modules are implemented on the FPGA board and experimentally tested in the MEMS mirror-based laser scanner system. To the authors’ knowledge, it is the first reported RC-based MEMS mirror control system implemented on FPGA. In addition, the PID control is also tested as a baseline experiment. The results indicate that the RC control greatly outperforms the PID control with a 57.18% reduction in delay and over a 58.83% reduction in root mean square error (RMSE). Among the RC controls, the SWN-RC exhibits the best performance than the others. The SWN-RC achieves a further 14.03% and 12.42% reduction in RMSE compared to regular-RC and random-RC, respectively.</p>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"23 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140642116","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

Development of SiO2 UV-curable materials and their fine-patterning using sol-gel method 利用溶胶-凝胶法研制二氧化硅紫外线固化材料及其精细图案化

IF 1.1 4区物理与天体物理

Optical Review Pub Date : 2024-04-11 DOI: 10.1007/s10043-024-00883-7

Zheng Li, Renjie Li, Zhuohong Feng, Zhezhe Wang

引用次数: 0

Investigation of impairments separability in direct detection optical performance monitoring based on UMAP technique 基于 UMAP 技术的直接探测光学性能监测中的损伤分离性研究

IF 1.1 4区物理与天体物理

Optical Review Pub Date : 2024-04-06 DOI: 10.1007/s10043-024-00878-4

Zhao Shen, Xiangye Zeng, Jingyi Wang, Jianfei Liu, Jia Lu, Jie Ma, Yilin Zhang, Baoshuo Fan

{"title":"Investigation of impairments separability in direct detection optical performance monitoring based on UMAP technique","authors":"Zhao Shen, Xiangye Zeng, Jingyi Wang, Jianfei Liu, Jia Lu, Jie Ma, Yilin Zhang, Baoshuo Fan","doi":"10.1007/s10043-024-00878-4","DOIUrl":"10.1007/s10043-024-00878-4","url":null,"abstract":"<div><p>This paper focuses on the channel impairments separability of two histogram-based features, asynchronous amplitude histograms (AAH) and asynchronous delay-tap plot (ADTP), commonly used in direct-detection optical performance monitoring (OPM) techniques. This paper presents an in-depth study of the conditions under which these two histogram features are applicable in OPM. These high-dimensional features, AAH and ADTP, are dimensionally reduced using a state-of-the-art data visualization algorithm called Uniform Manifold Approximation and Projection (UMAP) algorithm. After data visualization, it can be found these two histogram-based features have some limitations in distinguishing between different levels of impairments in some specific cases. These features cannot achieve high accuracy in monitoring optical performance in these given situations, no matter how complex the classifier is designed. Extensive simulation experiments were performed to study the classification performance of the two histogram features in the single and multiple impairments cases. The results show that both AAH and ADTP can be used to monitor cumulative dispersion (CD) and optical signal to noise ratio (OSNR) in the case of the single impairment. In addition, the monitoring performance of both features is better for dispersion in the case of multiple impairments coexistence, while both have limitations for OSNR monitoring. However, the anti-dispersion interference ability of ADTP is better than that of AAH. The plausibility of the study results is verified by estimating the channel impairments under different conditions using a deep neural network-based (DNN) identifier. The impairments separation visualization results of UMAP are highly consistent with the estimation results of the DNN-based classifier, achieving the interconnection of usefulness and practicality.</p></div>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"31 3","pages":"329 - 344"},"PeriodicalIF":1.1,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140533928","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

Improving multi-step prediction performance of multi-channel QoT over optical backbone networks: deep echo state attention network 提高光骨干网络多通道 QoT 的多步预测性能：深度回波状态关注网络

IF 1.2 4区物理与天体物理

Optical Review Pub Date : 2024-04-04 DOI: 10.1007/s10043-024-00873-9

Xiaochuan Sun, Difei Cao, Mingxiang Hao, Zhigang Li, Yingqi Li

{"title":"Improving multi-step prediction performance of multi-channel QoT over optical backbone networks: deep echo state attention network","authors":"Xiaochuan Sun, Difei Cao, Mingxiang Hao, Zhigang Li, Yingqi Li","doi":"10.1007/s10043-024-00873-9","DOIUrl":"https://doi.org/10.1007/s10043-024-00873-9","url":null,"abstract":"<p>Multi-channel transmission mode is the mainstream in real optical system scenarios, and its precise prediction of the optical channel quality of transmission (QoT) can provide guidance for the connections routing and margins allocation, avoiding network resources waste and unavailable connection establishment. However, current multi-channel QoT predictions devote to single-step modeling. It is difficult to grasp the state changes of the optical channel for a period of time in the future, thereby hardly enabling early warnings for abnormal channel conditions and timely maintenance deployment. To tackle this issue, we propose a novel multi-step multi-channel QoT prediction framework, i.e., the deep echo state attention network (DESAN). Structurally, it consists of stacked reservoirs that are successively connected, supporting multi-level feature extraction of optical QoT signal. Specially, the attention mechanism (AM) is introduced for enhancing each reservoir’s state, which captures long-term QoT data features more effectively, meanwhile reducing the negative impact of redundant neurons as much as possible. Finally, aggregating the AM outputs of all reservoirs’ states is for the DESAN training. On the real-world optical-layer characteristic data from Microsoft optical backbone network, the simulation results show that our proposal can make a good tradeoff between sequential multi-step QoT modeling performance and efficiency. The statistical verification is further adopted to demonstrate our findings.</p>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"124 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140349008","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

Investigation of interference structure with different field intensication in linearly polarized laser field 线性偏振激光场中不同场强的干涉结构研究

IF 1.1 4区物理与天体物理

Optical Review Pub Date : 2024-04-04 DOI: 10.1007/s10043-024-00880-w

Bing Liu, Wei-Wei Yu

{"title":"Investigation of interference structure with different field intensication in linearly polarized laser field","authors":"Bing Liu, Wei-Wei Yu","doi":"10.1007/s10043-024-00880-w","DOIUrl":"10.1007/s10043-024-00880-w","url":null,"abstract":"<div><p>In this paper, we employ the quantum trajectory Monte Carlo model to simulate the momentum distribution of Argon atoms during tunneling ionization. Our analysis illustrates the use of semi-classical models to study the changes in electron trajectories under different laser field intensities. And by studying the different subcycles, the changes of the interference pattern are observed. Our approach successfully observes the interference patterns resembling fishbone and spider stripes. We delve into the subperiodic interference structures present in the photoelectron momentum distributions. Specifically, we investigate the correlation effects of ionization trajectories on the interference fringes within the same period and in adjacent periods. Our analysis demonstrates that the holographic interference fringe results from the superposition of direct ionization trajectories and scattering trajectories. We elucidate the mechanisms underlying the formation of above-threshold ionization (ATI) ring structures and temporal double-slit interference patterns. Additionally, we investigate how wave packets perceive the Coulomb potential and its impact on interference phenomena under varying field intensities. Notably, without the Coulomb potential, the original spider-like holographic interference pattern disappears, replaced by temporal double-slit interference fringes similar to those observed within a comparable time frame.</p></div>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"31 3","pages":"321 - 328"},"PeriodicalIF":1.1,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140349022","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

Filter-free microwave photonic single-sideband mixer with mixing spurs suppressed based on dual-polarization dual-drive Mach–Zehnder modulator 基于双偏振双驱动马赫-泽恩德（Mach-Zehnder）调制器的无滤波器微波光子单边带混频器，可抑制混频尖刺

IF 1.1 4区物理与天体物理

Optical Review Pub Date : 2024-04-03 DOI: 10.1007/s10043-024-00884-6

Zhenyu Li, Tao Wu, Zhenyang Shi, Enming Xu, Zuxing Zhang

引用次数: 0

Simulation study on penetration depth of light in the source–detector distance using a nine-layered skin tissue model in the visible wavelength range 利用可见光波长范围内的九层皮肤组织模型，对光源-探测器距离内的光穿透深度进行模拟研究

IF 1.2 4区物理与天体物理

Optical Review Pub Date : 2024-03-30 DOI: 10.1007/s10043-024-00877-5

Tomonori Yuasa, Iori Kojima, Naomichi Yokoi, Kumiko Kikuchi, Yukio Yamada, Yoshihisa Aizu

引用次数: 0

Terahertz beam reconfigurable phase gradient metasurface of VO2 based on different metal–insulator transition temperatures 基于不同金属-绝缘体转变温度的 VO2 太赫兹光束可重构相位梯度元表面

IF 1.1 4区物理与天体物理

Optical Review Pub Date : 2024-03-27 DOI: 10.1007/s10043-024-00879-3

Qi Chen, Jinqi Dong, Yanqing Cheng, Shuyun Lin, Yao Zhou

{"title":"Terahertz beam reconfigurable phase gradient metasurface of VO2 based on different metal–insulator transition temperatures","authors":"Qi Chen, Jinqi Dong, Yanqing Cheng, Shuyun Lin, Yao Zhou","doi":"10.1007/s10043-024-00879-3","DOIUrl":"10.1007/s10043-024-00879-3","url":null,"abstract":"<div><p>In this letter, by using vanadium dioxide (VO<sub>2</sub>) with metal–insulator transition (MIT) temperatures of 60 ℃ and 72 ℃, respectively, and analyzing the effects of the two states of VO<sub>2</sub> before (insulator state) and after (metal state) MIT on the amplitude and phase of the double MIT VO<sub>2</sub> (DMITV) unit structure, constituting the terahertz beam reconfigurable phase gradient metasurface of VO<sub>2</sub> based on different MIT temperatures, which achieves flexible regulation of terahertz beam. The structure is composed of two different MIT temperature VO<sub>2</sub>, polytetrafluoroethylene (PTFE) and metal. By changing the external temperature, the structure has different beam deflection angles at different temperatures. At 1.4 THz, when the temperature is below 60 ℃, the beam deflection angle is 0°, when the temperature is between 60 ℃ and 72 ℃, the beam deflection angle is 36° and when the temperature is above 72 ℃, the beam deflection angle is 17°. This terahertz phase gradient metasurface based on VO<sub>2</sub> with different MIT temperatures provides a new way to flexibly control terahertz beams, and will have great application prospects in terahertz transmission, imaging, wireless communication, or other fields.</p></div>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"31 3","pages":"309 - 314"},"PeriodicalIF":1.1,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140310666","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