Optical Review最新文献_第10页

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

Methods for reducing failure of spaceborne quasi-absolute optical encoder caused by oil contamination 减少机载准绝对式光栅因油污染而失效的方法

IF 1.2 4区物理与天体物理

Optical Review Pub Date : 2024-03-22 DOI: 10.1007/s10043-024-00876-6

{"title":"Methods for reducing failure of spaceborne quasi-absolute optical encoder caused by oil contamination","authors":"","doi":"10.1007/s10043-024-00876-6","DOIUrl":"https://doi.org/10.1007/s10043-024-00876-6","url":null,"abstract":"<h3>Abstract</h3> <p>Oil contamination has a detrimental influence on the spaceborne quasi-absolute optical encoder because it introduces errors in angular displacement measurement. To reduce these errors and prevent the failure of the spaceborne quasi-absolute optical encoder caused by oil contamination, this paper proposes a multi-reference identification algorithm for the absolute angular displacement and a multi-reading-head data fusion algorithm. First, the composition of the spaceborne quasi-absolute optical encoder and the design of the processing circuit are introduced. Second, a multi-reference identification algorithm of the absolute angular displacement is proposed to prevent the misidentification of absolute angular displacement due to oil contamination. Moreover, a multi-reading-head data fusion method was employed to determine and eliminate the erroneous reading head measurement data. The effectiveness of this method was verified by experimentally comparing the angular displacement curves and angular velocity curves obtained from a quasi-absolute angular displacement measuring device, with and without the application of the proposed method. The effects of oil contamination on the accuracy of measurement were also compared. The results indicated that after application of the method, the error in the angular displacement measured by the code disk due to oil contamination was significantly reduced, ensuring the correctness and reliability of the angle-displacement measurement, although the accuracy of measurement was still slightly influenced. Thus, the proposed method is considered to have practical value for making the spaceborne quasi-absolute optical encoder better against the influence of oil contamination.</p>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"3 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140196080","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

Linear image sensor with triangular pixel geometry specialized for the light section method 具有三角形像素几何形状的线性图像传感器，专用于光截面法

IF 1.2 4区物理与天体物理

Optical Review Pub Date : 2024-03-22 DOI: 10.1007/s10043-024-00872-w

引用次数: 0

High Q-factor multiple Fano resonances in all-dielectric metasurface based on quasi-bound states in the continuum 基于连续体中准束缚态的全介质元表面中的高 Q 因子多重法诺共振

IF 1.2 4区物理与天体物理

Optical Review Pub Date : 2024-03-11 DOI: 10.1007/s10043-024-00874-8

{"title":"High Q-factor multiple Fano resonances in all-dielectric metasurface based on quasi-bound states in the continuum","authors":"","doi":"10.1007/s10043-024-00874-8","DOIUrl":"https://doi.org/10.1007/s10043-024-00874-8","url":null,"abstract":"<h3>Abstract</h3> <p>Bound states in the continuum (BICs) spectrum are localized states in the continuum domain with an infinite lifetime, zero radiation, and an infinite quality factor (Q-factor). The structural symmetry is typically broken to transform BICs into quasi-BICs with ultrahigh Q-factors, which are used in fields such as optical switches, nonlinear optics, and sensing. Herein, we present an all-dielectric metasurface fabricated by depositing Si on the SiO<sub>2</sub> substrate and etching an “8”-shape hole in the middle of each unit. By breaking the symmetry of the structure, the BIC is transformed into a quasi-BIC mode, which can realize triple Fano resonances with a high Q-factor. The effects of different structural parameters on the Fano resonances are investigated by varying the structural parameters. The physical mechanisms of the three Fano resonances are elucidated by combining the electromagnetic field and multipole decomposition of scattered power. Calculation results show that the maximum Q-factor reaches 4.7 × 10<sup>4</sup>, the maximum figure-of-merit (FOM) value reaches 675, and the modulation depths of the three resonances are approximately 100%. The metasurface exhibits a high Q-factor, FOM value, and modulation depth, thus rendering it suitable for application to high-performance biosensors, nonlinear optics, and optical switches.</p>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"5 2 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140097075","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

Effect of MoS2 and (phosphorene, germanene, borophene) hybrid structure on the performance of an SPR biosensor for detection of bacteria MoS2 和（磷烯、锗烯、硼烯）杂交结构对用于检测细菌的 SPR 生物传感器性能的影响

IF 1.1 4区物理与天体物理

Optical Review Pub Date : 2024-03-11 DOI: 10.1007/s10043-024-00875-7

Mohammad Hadi Shahrokh Abadi, Amir Davami

{"title":"Effect of MoS2 and (phosphorene, germanene, borophene) hybrid structure on the performance of an SPR biosensor for detection of bacteria","authors":"Mohammad Hadi Shahrokh Abadi, Amir Davami","doi":"10.1007/s10043-024-00875-7","DOIUrl":"10.1007/s10043-024-00875-7","url":null,"abstract":"<div><p>In this paper, the effect of different structures and flakes of phosphorene (Ph), germanene (Ge), and borophene (B) sandwiched between MoS<sub>2</sub> layers on the surface plasmon resonance (SPR) biosensor structure is simulated and investigated in the Lumerical software environment. The main structure is based on the Kretschmann structure, utilizing the BK<sub>7</sub> prism, a 30 nm gold (Au) layer, and an MoS<sub>2</sub> and (Ph, Ge, B) hybrid structure as the top layer. The reflectance curves of the proposed SPR biosensors were obtained, analyzed, and compared for different refractive index modes, specifically <i>n</i> = 1.33 for a neutral aqueous medium and <i>n</i> = 1.339 for a bacterial medium. The results demonstrate that the minimum reflectance occurs for a 30 nm Au layer at an SPR resonance angle of θ = 71.95°. However, when different configurations of (Ph, Ge, B) with varying thicknesses are sandwiched between MoS<sub>2</sub> layers on the Au layer, the resonance angle increases. The minimum reflectance values for a monolayer of phosphorene, a triple layer of germanene, and a triple layer of borophene sandwiched between MoS<sub>2</sub> double layers on the Au layer are 0.027, 0.002, and 0.004, respectively. The triple layer of germanene exhibits the highest sensitivity of 152°/RIU for Δn = 0.009 with a detection accuracy of 0.090. The simulation results of the proposed structures present new opportunities for enhancing the sensitivity and performance of SPR biosensors.</p></div>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"31 Japan","pages":"615 - 624"},"PeriodicalIF":1.1,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140097022","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