Optics express最新文献_第3页

Optical switching with high-Q Fano resonance of all-dielectric metasurface governed by bound states in the continuum. 受连续体中束缚态支配的全介质元表面高 Q 值法诺共振的光开关。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-07-29 DOI: 10.1364/OE.530788

Jingwei Lv, Yanru Ren, Debao Wang, Jianxin Wang, Xili Lu, Ying Yu, Wei Li, Qiang Liu, Xinchen Xu, Wei Liu, Paul K Chu, Chao Liu

{"title":"Optical switching with high-Q Fano resonance of all-dielectric metasurface governed by bound states in the continuum.","authors":"Jingwei Lv, Yanru Ren, Debao Wang, Jianxin Wang, Xili Lu, Ying Yu, Wei Li, Qiang Liu, Xinchen Xu, Wei Liu, Paul K Chu, Chao Liu","doi":"10.1364/OE.530788","DOIUrl":"https://doi.org/10.1364/OE.530788","url":null,"abstract":"The discovery of bound states in the continuum (BIC) of optical nanostructures has garnered significant research interest and found widespread application in the field of optics, leading to an attractive approach to achieve high-Q (Quality factor) Fano resonance. Herein, an all-dielectric metasurface consisting of four gallium phosphide (Gap) cylinders on the MgF2 substrate is designed and analyzed by the finite element method (FEM). By breaking the symmetry of the plane, specifically by moving the two cylinders to one side, it is possible to achieve a transition from the symmetry-protected BIC to quasi-BIC. This transition enables the excitation of sharp dual-band Fano resonance at wavelengths of 1,045.4 nm and 1,139.6 nm, with the maximum Q factors reaching 1.47 × 104 and 1.28 × 104, respectively. The multipole decomposition and near-field distributions show that these two QBICs are dominated by the electric quadrupole (EQ) and magnetic quadrupole (MQ). Furthermore, bidirectional optical switching can be accomplished by changing the polarization direction of the incident light. As a result, the maximum sensitivity and figure of merit (FOM) are 488.9 nm/RIU and 2.51 × 105 RIU-1, respectively. The results enrich our knowledge about BIC and reveal a platform for the development of high-performance photonics devices such as optical switches and sensors.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"32 16","pages":"28334-28347"},"PeriodicalIF":3.2,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142624985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Record bandwidth waveband-shift-free optical phase conjugation in nonlinear fiber optical loop mirror. 非线性光纤环镜中的记录带宽无波段偏移光学相位共轭。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-07-29 DOI: 10.1364/OE.527800

Vladimir Gordienko, Sonia Boscolo, Mariia Bastamova, Andrew D Ellis, Nick J Doran

{"title":"Record bandwidth waveband-shift-free optical phase conjugation in nonlinear fiber optical loop mirror.","authors":"Vladimir Gordienko, Sonia Boscolo, Mariia Bastamova, Andrew D Ellis, Nick J Doran","doi":"10.1364/OE.527800","DOIUrl":"https://doi.org/10.1364/OE.527800","url":null,"abstract":"We present a novel configuration for broadband, wavelength-shift-free optical phase conjugation (OPC) utilizing four-wave mixing in a nonlinear fiber optical loop mirror (NOLM). In the proposed configuration, the input signals and the pump wave return to the input port of the NOLM whereas the phase-conjugated signals generated in the NOLM loop are transmitted through the output port. This allows the phase-conjugated copies to occupy the same wavelength band as the input signals, in line with the requirements for practical deployment of OPC in communication links. The demultiplexing of the phase conjugates from the input signals sharing the same band is achieved by imparting an asymmetric phase shift on the pump via a fiber Bragg grating. We experimentally demonstrate waveband-shift-free OPC with an extinction ratio between signals and conjugated copies at the NOLM output of 17 dB to 25 dB across a band of 35 nm. Whilst a 7-nm wide performance gap exists in the middle of the band, this is the record bandwidth for waveband-shift-free OPC in an all-fiber setup. We compare the experimental results with numerical simulations of the OPC-NOLM, identify the reason for the observed performance gap, and justify the route for further performance improvement.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"32 16","pages":"27894-27905"},"PeriodicalIF":3.2,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142625219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

RMS error analysis of spatial uniformity and energy stability of the laser beam in second harmonic generation. 二次谐波发生中激光束空间均匀性和能量稳定性的均方根误差分析。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-07-29 DOI: 10.1364/OE.529902

Geonhui Lee, Hanjin Jo, Seungjin Hwang, Sungyoon Lee, Tae Jun Yu

引用次数: 0

Lidar cloud and aerosol layer detection method based on point cloud filtering 基于点云过滤的激光雷达云层和气溶胶层探测方法

IF 3.8 2区物理与天体物理

Optics express Pub Date : 2024-07-29 DOI: 10.1364/oe.536588

Xue Shen, Wei Kong, Rujia Ma, Tao Chen, Ye Liu, Genghua Huang, Rong Shu

引用次数: 0

Polarization splitter-rotator on thin film lithium niobate based on multimode interference. 基于多模干涉的铌酸锂薄膜偏振分光旋转器。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-07-29 DOI: 10.1364/OE.530883

MengKe Wang, Hao Yao, JiaYao Deng, ZheFeng Hu, TingTing Tang, Kaixin Chen

引用次数: 0

Combined axicon design based on a structural parameter optimization algorithm. 基于结构参数优化算法的组合传感器设计。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-07-29 DOI: 10.1364/OE.527871

Zongyu Cui, Jiaojiao Ren, Jiyang Zhang, Dandan Zhang, Jian Gu, Junwen Xue, Lijuan Li

引用次数: 0

Three-photon and four-photon absorption in lithium niobate measured by the Z-scan technique: erratum. 用 Z 扫描技术测量铌酸锂中的三光子和四光子吸收：勘误。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-07-29 DOI: 10.1364/OE.532226

Imene Benabdelghani, György Tóth, Gergő Krizsán, Gábor Bazsó, Zsuzsanna Szaller, Nelson Mbithi, Péter Rácz, Péter Dombi, Gyula Polónyi, János Hebling

引用次数: 0

Incoherent phenomena in anisotropic periodic structures: from modeling to experimental demonstration. 各向异性周期结构中的不连贯现象：从建模到实验演示。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-07-29 DOI: 10.1364/OE.499025

K Postava, P Ciompa, T Kohut, M Drong, R Ješko, H Jaffrès, T Fördös, L Kotačka, H-J Drouhin

{"title":"Incoherent phenomena in anisotropic periodic structures: from modeling to experimental demonstration.","authors":"K Postava, P Ciompa, T Kohut, M Drong, R Ješko, H Jaffrès, T Fördös, L Kotačka, H-J Drouhin","doi":"10.1364/OE.499025","DOIUrl":"https://doi.org/10.1364/OE.499025","url":null,"abstract":"The periodic structures are widely studied in numerous optical applications and there is a number of good tools for numerical modeling of such a structures (for example rigorous coupled-wave analysis, finite-difference time-domain, finite element method etc.). However, when it comes to the modeling of incoherent effects in many cases of practical interest, the current methods are not rigorous enough or depend on computationally demanding averaging of coherent response. In this paper, we present a novel approach to modeling of incoherent effects in structures with lateral periodicity based on scattering matrix formalism, as a way to describe optical response of a structure, and on application of incoherent wave summation in the form of infinite geometric series and generalized Mueller matrix calculus. This method can be combined with any of the existing coherent methods of modeling periodic structures and it offers significantly faster computational performance than partially coherent/incoherent methods based on averaging. It is compared with other methods for modeling of incoherent effects and also with experimental spectroscopic data. This method is then used to explain phenomena emerging from the complex interaction between diffraction grating and thick substrate.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"32 16","pages":"27822-27834"},"PeriodicalIF":3.2,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142624690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Design of reconfigurable Huygens metasurfaces based on Drude-like scatterers operating in the epsilon-negative regime. 基于在ε-负状态下工作的德鲁德类散射体的可重构惠更斯元表面设计。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-07-29 DOI: 10.1364/OE.526048

Alessio Monti, Stefano Vellucci, Mirko Barbuto, Luca Stefanini, Davide Ramaccia, Alessandro Toscano, Filiberto Bilotti

{"title":"Design of reconfigurable Huygens metasurfaces based on Drude-like scatterers operating in the epsilon-negative regime.","authors":"Alessio Monti, Stefano Vellucci, Mirko Barbuto, Luca Stefanini, Davide Ramaccia, Alessandro Toscano, Filiberto Bilotti","doi":"10.1364/OE.526048","DOIUrl":"https://doi.org/10.1364/OE.526048","url":null,"abstract":"In this study, we investigate the feasibility of designing reconfigurable transmitting metasurfaces through the use of Drude-like scatterers with purely electric response. Theoretical and numerical analyses are provided to demonstrate that the response of spherical Drude-like scatterers can be tailored to achieve complete transmission, satisfying a generalized Kerker's condition at half of their plasma frequency. This phenomenon, which arises from the co-excitation of the electric dipole and the electric quadrupole within the scatterer, also exhibits moderate broadband performance. Subsequently, we present the application of these particles as meta-atoms in the design of reconfigurable multipolar Huygens metasurfaces, outlining the technical prerequisites for achieving effective beam-steering capabilities. Finally, we explore a plausible implementation of these low-loss Drude-like scatterers at microwave frequencies using plasma discharges. Our findings propose an alternative avenue for Huygens metasurface designs, distinct from established approaches relying on dipolar meta-atoms or on core-shell geometries. Unlike these conventional methods, our approach fosters seamless integration of reconfigurability strategies in beam-steering devices.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"32 16","pages":"28429-28440"},"PeriodicalIF":3.2,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142623538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

O-band QKD link over a multiple ONT loaded carrier-grade GPON for FTTH applications. 通过多 ONT 加载运营商级 GPON 的 O 波段 QKD 链路，用于 FTTH 应用。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-07-29 DOI: 10.1364/OE.518564

N Makris, A Ntanos, A Papageorgopoulos, T Stathopoulos, P Konteli, A Stathis, G Giannoulis, I Tsoni, F Setaki, D Zavitsanos, G Lyberopoulos, H Avramopoulos, D Syvridis, G T Kanellos

引用次数: 0